CN112029538A

Movatterモバイル変換

Info

Publication number: CN112029538A
Application number: CN202010826951.XA
Authority: CN
Inventors: 祖静茹; 刘雷; 李克忠; 刘元杰
Original assignee: ENN Science and Technology Development Co Ltd
Current assignee: ENN Science and Technology Development Co Ltd
Priority date: 2020-08-17
Filing date: 2020-08-17
Publication date: 2020-12-04
Anticipated expiration: 2040-08-17
Also published as: CN112029538B

Abstract

Translated fromChinese

本公开涉及一种粉煤与块煤的耦合气化系统及方法，该系统包括块煤气化炉和粉煤气化炉；粉煤气化炉具有粉煤气化反应腔、粉煤入口以及气化剂入口；块煤气化炉具有块煤气化反应腔、块煤入口、气体入口、排渣口和粗煤气气体出口；气体入口与粉煤气化反应腔连通，以使粉煤气化反应腔内反应产生的气体由气体入口进入至块煤气化反应腔内，与块煤发生气化反应；排渣口与粉煤气化反应腔连通，以使块煤气化反应腔内反应产生的固体颗粒由排渣口进入至粉煤气化反应腔内发生燃烧与气化反应，从而实现了粉煤与块煤一同气化，以平衡粉煤与块煤供求不均的局面，提高煤炭利用率和转化率。

The present disclosure relates to a coupled gasification system and method for pulverized coal and lump coal. The system includes a lump coal gasifier and a pulverized coal gasifier; the pulverized coal gasifier has a pulverized coal gasification reaction chamber, a pulverized coal inlet, and a gasification agent inlet. The block coal gasifier has a block coal gasification reaction chamber, a lump coal inlet, a gas inlet, a slag discharge port and a crude gas gas outlet; the gas inlet is communicated with the pulverized coal gasification reaction chamber, so that the gas produced by the reaction in the pulverized coal gasification reaction chamber The gas enters into the lump coal gasification reaction chamber from the gas inlet, and gasification reaction occurs with the lump coal; Combustion and gasification reactions take place in the pulverized coal gasification reaction chamber, thereby realizing the co-gasification of pulverized coal and lump coal, to balance the uneven supply and demand of pulverized coal and lump coal, and to improve the utilization rate and conversion rate of coal.

Description

Translated fromChinese

粉煤与块煤的耦合气化系统及方法Coupling gasification system and method of pulverized coal and lump coal

技术领域technical field

本公开涉及煤气化技术领域，尤其涉及一种粉煤与块煤的耦合气化系统及方法。The present disclosure relates to the technical field of coal gasification, in particular to a coupled gasification system and method of pulverized coal and lump coal.

背景技术Background technique

煤气化技术是煤洁净高效利用的一种重要方式。Coal gasification technology is an important way for the clean and efficient utilization of coal.

随着煤炭开采的机械化强度越来越高，煤炭粉化率逐渐增强，即粉煤采出率提高。而目前应用最广的煤气化技术大多数均采用为块煤，这就导致很多煤矿出现粉煤无法有效处理，堆积严重，而气化工厂则存在块煤供应无法满足的情况。As the mechanization intensity of coal mining becomes higher and higher, the coal pulverization rate gradually increases, that is, the pulverized coal recovery rate increases. Most of the most widely used coal gasification technologies at present are lump coal, which leads to the inability of pulverized coal to be effectively processed in many coal mines, and the accumulation is serious, while the supply of lump coal cannot be satisfied in gasification plants.

因此，如何使粉煤与块煤一同气化，以平衡这种粉煤与块煤供求不均的局面，提高煤炭利用和转化效率成为亟待解决的问题。Therefore, how to gasify pulverized coal and lump coal together to balance the uneven supply and demand of pulverized coal and lump coal, and improve coal utilization and conversion efficiency has become an urgent problem to be solved.

发明内容SUMMARY OF THE INVENTION

为了解决上述技术问题或者至少部分地解决上述技术问题，本公开提供了一种粉煤与块煤的耦合气化系统及方法。In order to solve the above technical problems or at least partially solve the above technical problems, the present disclosure provides a coupled gasification system and method for pulverized coal and lump coal.

第一方面，本公开提供了一种粉煤与块煤的耦合气化系统，包括块煤气化炉和粉煤气化炉；In a first aspect, the present disclosure provides a coupled gasification system for pulverized coal and lump coal, including a lump coal gasifier and a pulverized coal gasifier;

所述粉煤气化炉具有粉煤气化反应腔、可供粉煤进入至所述粉煤气化反应腔内的粉煤入口以及可供气化剂进入至所述粉煤气化反应腔内的气化剂入口；The pulverized coal gasifier has a pulverized coal gasification reaction chamber, a pulverized coal inlet for the pulverized coal to enter the pulverized coal gasification reaction chamber, and a gasification for the gasification agent to enter the pulverized coal gasification reaction chamber agent entrance;

所述块煤气化炉具有块煤气化反应腔、可至少供块煤进入至所述块煤气化反应腔内的块煤入口以及分别与所述块煤气化反应腔连通的气体入口、排渣口和粗煤气气体出口；The lump coal gasification furnace has a lump coal gasification reaction chamber, a lump coal inlet that can at least enter the lump coal into the lump coal gasification reaction chamber, and a gas inlet and a slag discharge port respectively communicated with the lump coal gasification reaction chamber and crude gas gas outlet;

所述气体入口与所述粉煤气化反应腔连通，以使所述粉煤气化反应腔内反应产生的气体由所述气体入口进入至所述块煤气化反应腔内，与所述块煤发生气化反应；所述排渣口与所述粉煤气化反应腔连通，以使所述块煤气化反应腔内反应产生的固体颗粒由所述排渣口进入至所述粉煤气化反应腔内发生燃烧与气化反应。The gas inlet is communicated with the pulverized coal gasification reaction chamber, so that the gas generated by the reaction in the pulverized coal gasification reaction chamber enters into the lump coal gasification reaction chamber through the gas inlet, and generates with the lump coal. Gasification reaction; the slag discharge port is communicated with the pulverized coal gasification reaction chamber, so that the solid particles produced by the reaction in the lump coal gasification reaction chamber enter into the pulverized coal gasification reaction chamber through the slag discharge port Combustion and gasification reactions occur.

可选的，所述块煤气化反应腔的内径大于所述粉煤气化反应腔的内径。Optionally, the inner diameter of the lump coal gasification reaction chamber is larger than the inner diameter of the pulverized coal gasification reaction chamber.

可选的，所述块煤入口设置在所述块煤气化炉的顶部，所述气体入口设置在所述块煤气化炉的底部。Optionally, the lump coal inlet is arranged at the top of the lump coal gasifier, and the gas inlet is arranged at the bottom of the lump coal gasifier.

可选的，所述块煤气化炉设置在所述粉煤气化炉的上方。Optionally, the lump coal gasifier is arranged above the pulverized coal gasifier.

可选的，所述气体入口处设置有第一分布板；Optionally, a first distribution plate is provided at the gas inlet;

所述第一分布板分别与所述粉煤气化反应腔和所述块煤气化反应腔连通，以使所述粉煤气化反应腔内反应产生的气体经过所述第一分布板进入至所述块煤气化反应腔。The first distribution plate is respectively communicated with the pulverized coal gasification reaction chamber and the block coal gasification reaction chamber, so that the gas generated by the reaction in the pulverized coal gasification reaction chamber enters the Block coal gasification reaction chamber.

可选的，所述第一分布板的上方还设置有第二分布板，且所述第二分布板与所述第一分布板间隔设置；Optionally, a second distribution plate is further provided above the first distribution plate, and the second distribution plate is spaced from the first distribution plate;

所述第二分布板分别与所述第一分布板和所述块煤气化反应腔连通，以使所述粉煤气化反应腔内反应产生的气体依次经过所述第一分布板和所述第二分布板进入至所述块煤气化反应腔。The second distribution plate is respectively communicated with the first distribution plate and the block coal gasification reaction chamber, so that the gas produced by the reaction in the pulverized coal gasification reaction chamber passes through the first distribution plate and the second distribution plate in sequence. The two distribution plates enter into the block coal gasification reaction chamber.

可选的，所述第二分布板为上端大、下端小的锥形分布板；Optionally, the second distribution plate is a conical distribution plate with a large upper end and a small lower end;

所述第一分布板为上端小、下端大的锥形分布板。The first distribution plate is a conical distribution plate with a small upper end and a large lower end.

可选的，所述块煤气化炉内还设置有排渣管，所述排渣口位于所述排渣管的出口端，以使所述块煤气化反应腔内反应产生的固体颗粒由所述排渣管排出至所述粉煤气化反应腔；Optionally, the block coal gasification furnace is further provided with a slag discharge pipe, and the slag discharge port is located at the outlet end of the slag discharge pipe, so that the solid particles produced by the reaction in the block coal gasification reaction chamber can be removed from the gasification chamber. the slag discharge pipe is discharged to the pulverized coal gasification reaction chamber;

所述排渣管位于所述第一分布板和所述第二分布板之间，所述排渣管的入口端与所述第二分布板连接，所述排渣管的出口端与所述第一分布板连接。The slag discharge pipe is located between the first distribution plate and the second distribution plate, the inlet end of the slag discharge pipe is connected to the second distribution plate, and the outlet end of the slag discharge pipe is connected to the second distribution plate. The first distribution board is connected.

可选的，所述块煤气化炉还具有与所述块煤气化反应腔连通的气体补充口，以通过所述气体补充口向所述块煤气化反应腔内补充蒸汽或者补充一氧化碳和氢气。Optionally, the bulk coal gasification furnace further has a gas supplement port communicating with the bulk coal gasification reaction chamber, so as to supplement steam or supplement carbon monoxide and hydrogen into the bulk coal gasification reaction chamber through the gas supplement port.

可选的，所述块煤气化炉还具有与所述块煤气化反应腔连通的氧气补充口，以通过所述氧气补充口向所述块煤气化反应腔内补充氧气。Optionally, the bulk coal gasification furnace further has an oxygen supplement port communicated with the bulk coal gasification reaction chamber, so that oxygen is supplemented into the bulk coal gasification reaction chamber through the oxygen supplement port.

可选的，所述块煤气化炉为移动床气化炉；Optionally, the block coal gasifier is a moving bed gasifier;

所述粉煤气化炉为流化床气化炉。The pulverized coal gasifier is a fluidized bed gasifier.

第二方面，本公开提供了一种利用如上所述的粉煤与块煤的耦合气化系统进行粉煤与块煤耦合气化的方法，所述方法包括：In a second aspect, the present disclosure provides a method for coupled gasification of pulverized coal and lump coal using the above-mentioned coupled gasification system of pulverized coal and lump coal, the method comprising:

向粉煤气化炉的粉煤气化反应腔内至少通入粉煤和气化剂，以至少使所述粉煤和所述气化剂在所述粉煤气化反应腔内发生燃烧与气化反应；Passing at least pulverized coal and gasification agent into the pulverized coal gasification reaction chamber of the pulverized coal gasifier, so that at least the pulverized coal and the gasification agent undergo combustion and gasification reaction in the pulverized coal gasification reaction chamber;

向块煤气化炉的块煤气化反应腔内至少通入块煤，将所述粉煤气化反应腔内反应产生的气体通入所述块煤气化反应腔，以至少使所述块煤和所述气体在所述块煤气化反应腔内发生气化反应；At least the lump coal is passed into the lump coal gasification reaction chamber of the lump coal gasifier, and the gas produced by the reaction in the pulverized coal gasification reaction chamber is passed into the lump coal gasification reaction chamber, so that at least the lump coal and all the The gas undergoes a gasification reaction in the block coal gasification reaction chamber;

将所述块煤气化反应腔内反应产生的固体颗粒通入所述粉煤气化反应腔内，以至少使所述固体颗粒与所述粉煤、所述气化剂在所述粉煤气化反应腔内发生燃烧与气化反应。The solid particles produced by the reaction in the lump coal gasification reaction chamber are passed into the pulverized coal gasification reaction chamber, so as to at least make the solid particles react with the pulverized coal and the gasification agent in the pulverized coal gasification reaction Combustion and gasification reactions take place in the cavity.

可选的，所述向块煤气化炉的块煤气化反应腔内至少通入块煤包括：Optionally, at least passing the lump coal into the lump coal gasification reaction chamber of the lump coal gasifier includes:

在所述块煤的表面负载催化剂；A catalyst is supported on the surface of the lump coal;

将负载有所述催化剂的块煤通入所述块煤气化反应腔内。The lump coal loaded with the catalyst is passed into the lump coal gasification reaction chamber.

可选的，所述将负载有所述催化剂的块煤通入所述块煤气化反应腔内之后，所述方法还包括：Optionally, after passing the lump coal loaded with the catalyst into the lump coal gasification reaction chamber, the method further includes:

向所述块煤气化反应腔内补充一氧化碳和氢气。Carbon monoxide and hydrogen are supplemented into the bulk coal gasification reaction chamber.

可选的，当通入至所述块煤气化反应腔内的所述气体中的蒸汽含量低于预设蒸汽含量阈值时，所述方法还包括：Optionally, when the steam content of the gas introduced into the bulk coal gasification reaction chamber is lower than a preset steam content threshold, the method further includes:

向所述块煤气化反应腔内通入蒸汽。Steam is introduced into the bulk coal gasification reaction chamber.

可选的，当向所述块煤气化反应腔内通入的所述蒸汽的温度低于预设温度阈值时，所述方法还包括：Optionally, when the temperature of the steam introduced into the bulk coal gasification reaction chamber is lower than a preset temperature threshold, the method further includes:

向所述块煤气化反应腔内通入氧气。Oxygen is introduced into the bulk coal gasification reaction chamber.

本公开实施例提供的技术方案与现有技术相比具有如下优点：Compared with the prior art, the technical solutions provided by the embodiments of the present disclosure have the following advantages:

本公开实施例提供的粉煤与块煤的耦合气化系统及方法，通过向粉煤气化炉的粉煤气化反应腔内通入粉煤和气化剂，使粉煤和气化剂在粉煤气化反应腔内发生燃烧与气化反应，实现粉煤的气化；且向块煤气化炉的块煤气化反应腔内通入块煤，并将粉煤气化反应腔内反应产生的气体通入块煤气化反应腔内，以与块煤发生气化反应，即为块煤气化炉提供气化反应所需的气化剂，在实现块煤气化的同时，使得粉煤气化炉产生的气体得以有效利用，无需为块煤气化炉额外设置气化剂供给源，在一定程度上节省了成本，同时使得粉煤气化炉产生的气体得以进一步反应，提高了反应的充分性，从而提高了最终从粗煤气气体出口排出的粗煤气中有效气的含量，且减少了粗煤气中的含尘量，进而减少了后续对粗煤气进行净化的投资；此外，通过将块煤气化反应腔内反应产生的固体颗粒通入粉煤气化反应腔内，使固体颗粒在粉煤气化反应腔内进一步发生气化反应，即发生二次反应，从而提高了整体的气化效率。也就是说，本公开实施例提供的粉煤与块煤的耦合气化系统及方法实现了粉煤与块煤一同气化，使块煤与粉煤均可作为煤气化的原料，一同气化实现煤气转化，避免了粉煤的堆积，平衡了粉煤与块煤供求不均的局面，提高了煤炭利用和转化效率。The coupled gasification system and method for pulverized coal and lump coal provided by the embodiments of the present disclosure, by feeding pulverized coal and gasification agent into the pulverized coal gasification reaction chamber of the pulverized coal gasifier, the pulverized coal and gasification agent are gasified in the pulverized coal gasification furnace. Combustion and gasification reactions occur in the reaction chamber to realize the gasification of pulverized coal; and the lump coal is fed into the lump coal gasification reaction chamber of the lump coal gasifier, and the gas produced by the reaction in the pulverized coal gasification reaction chamber is delivered into the lump coal. In the coal gasification reaction chamber, the gasification reaction with the lump coal is carried out, that is, the gasification agent required for the gasification reaction is provided for the lump coal gasifier, and the gas produced by the pulverized coal gasifier can be effectively used while the lump coal gasification is realized. Utilization, there is no need to provide an additional gasification agent supply source for the lump coal gasifier, which saves costs to a certain extent, and at the same time enables the gas generated by the pulverized coal gasifier to be further reacted, which improves the sufficiency of the reaction, thereby improving the final recovery from crude oil. The content of effective gas in the crude gas discharged from the gas outlet reduces the dust content in the crude gas, thereby reducing the investment in subsequent purification of the crude gas; The particles are passed into the pulverized coal gasification reaction chamber, so that the solid particles further undergo gasification reaction in the pulverized coal gasification reaction chamber, that is, a secondary reaction occurs, thereby improving the overall gasification efficiency. That is to say, the coupled gasification system and method for pulverized coal and lump coal provided by the embodiments of the present disclosure realize the co-gasification of pulverized coal and lump coal, so that both lump coal and pulverized coal can be used as raw materials for coal gasification and gasify together. Realizing gas conversion, avoiding the accumulation of pulverized coal, balancing the uneven supply and demand of pulverized coal and lump coal, and improving the efficiency of coal utilization and conversion.

附图说明Description of drawings

此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本公开的实施例，并与说明书一起用于解释本公开的原理。The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description serve to explain the principles of the disclosure.

为了更清楚地说明本公开实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，对于本领域普通技术人员而言，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the accompanying drawings that are required to be used in the description of the embodiments or the prior art will be briefly introduced below. In other words, on the premise of no creative labor, other drawings can also be obtained from these drawings.

图1为本公开实施例所述的粉煤与块煤的耦合气化系统的结构示意图；1 is a schematic structural diagram of a coupled gasification system for pulverized coal and lump coal according to an embodiment of the present disclosure;

图2为本公开实施例所述的粉煤与块煤的耦合气化系统中设置有气体补充口时的结构示意图；FIG. 2 is a schematic structural diagram of the coupled gasification system for pulverized coal and lump coal according to an embodiment of the present disclosure when a gas supply port is provided;

图3为本公开实施例所述的粉煤与块煤的耦合气化方法的流程示意图。FIG. 3 is a schematic flowchart of the coupled gasification method of pulverized coal and lump coal according to an embodiment of the present disclosure.

其中，1、块煤气化炉；10、气室；11、块煤气化反应腔；12、块煤入口；13、气体入口；14、排渣管；141、排渣口；15、粗煤气气体出口；16、第一分布板；17、第二分布板；18、气体补充口；19、块煤进料系统；2、粉煤气化炉；20、气室；21、粉煤气化反应腔；22、粉煤入口；23、气化剂入口；24、第三分布板；25、残渣排出口；26、粉煤进料系统。Among them, 1. lump coal gasifier; 10, gas chamber; 11, lump coal gasification reaction chamber; 12, lump coal inlet; 13, gas inlet; 14, slag discharge pipe; 141, slag discharge port; 15, crude gas gas outlet; 16, the first distribution plate; 17, the second distribution plate; 18, the gas supplementary port; 19, the lump coal feeding system; 2, the pulverized coal gasifier; 20, the gas chamber; 21, the pulverized coal gasification reaction chamber; 22, pulverized coal inlet; 23, gasification agent inlet; 24, third distribution plate; 25, residue discharge outlet; 26, pulverized coal feeding system.

具体实施方式Detailed ways

为了能够更清楚地理解本公开的上述目的、特征和优点，下面将对本公开的方案进行进一步描述。需要说明的是，在不冲突的情况下，本公开的实施例及实施例中的特征可以相互组合。In order to more clearly understand the above objects, features and advantages of the present disclosure, the solutions of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments may be combined with each other under the condition of no conflict.

在下面的描述中阐述了很多具体细节以便于充分理解本公开，但本公开还可以采用其他不同于在此描述的方式来实施；显然，说明书中的实施例只是本公开的一部分实施例，而不是全部的实施例。Many specific details are set forth in the following description to facilitate a full understanding of the present disclosure, but the present disclosure can also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only a part of the embodiments of the present disclosure, and Not all examples.

图1为本公开实施例所述的粉煤与块煤的耦合气化系统的结构示意图。参照图1所示，本实施例提供一种粉煤与块煤的耦合气化系统，粉煤和块煤可以在该系统中实现共气化，即，使得粉煤和块煤均可作为煤气化的原料，并在该系统中一同被气化，以平衡粉煤和块煤供求不均的局面，提高煤炭利用、转换效率。FIG. 1 is a schematic structural diagram of a coupled gasification system for pulverized coal and lump coal according to an embodiment of the present disclosure. Referring to FIG. 1 , this embodiment provides a coupled gasification system for pulverized coal and lump coal, in which pulverized coal and lump coal can be co-gasified, that is, both pulverized coal and lump coal can be used as coal gas The raw materials are gasified and gasified together in the system to balance the uneven supply and demand of pulverized coal and lump coal, and improve the utilization and conversion efficiency of coal.

该粉煤与块煤的耦合气化系统包括：块煤气化炉1和粉煤气化炉2。其中，粉煤气化炉2具有粉煤气化反应腔21、可供粉煤进入至粉煤气化反应腔21内的粉煤入口22以及可供气化剂进入至粉煤气化反应腔21内的气化剂入口23。The coupling gasification system of pulverized coal and lump coal includes: lump coal gasifier 1 and pulverizedcoal gasifier 2 . The pulverizedcoal gasifier 2 has a pulverized coalgasification reaction chamber 21 , a pulverizedcoal inlet 22 for the pulverized coal to enter the pulverized coalgasification reaction chamber 21 , and a gas for the gasification agent to enter the pulverized coalgasification reaction chamber 21 .Chemical inlet 23.

块煤气化炉1具有块煤气化反应腔11、可至少供块煤进入至块煤气化反应腔11内的块煤入口12以及分别与块煤气化反应腔11连通的气体入口13、排渣口141和粗煤气气体出口15。气体入口13与粉煤气化反应腔21连通，以使粉煤气化反应腔21内反应产生的气体由气体入口13进入至块煤气化反应腔11内，与块煤发生气化反应；排渣口141与粉煤气化反应腔21连通，以使块煤气化反应腔11内反应产生的固体颗粒由排渣口141进入至粉煤气化反应腔21内发生燃烧与气化反应。The lump coal gasification furnace 1 has a lump coalgasification reaction chamber 11 , alump coal inlet 12 that can at least enter the lump coal into the lump coalgasification reaction chamber 11 , agas inlet 13 and a slag discharge port which are respectively communicated with the lump coalgasification reaction chamber 11 . 141 and rawgas gas outlet 15. Thegas inlet 13 is communicated with the pulverized coalgasification reaction chamber 21, so that the gas generated by the reaction in the pulverized coalgasification reaction chamber 21 enters the lump coalgasification reaction chamber 11 from thegas inlet 13, and gasification reaction occurs with the lump coal; 141 is communicated with the pulverized coalgasification reaction chamber 21, so that the solid particles produced by the reaction in the lump coalgasification reaction chamber 11 enter into the pulverized coalgasification reaction chamber 21 through theslag discharge port 141 for combustion and gasification reaction.

具体地，通入粉煤气化炉2中的粉煤和气化剂在粉煤气化反应腔21中发生燃烧与气化反应。粉煤气化所需要的气化剂具体可包括：氧气和蒸汽。粉煤气化反应腔21内的粉煤在一定温度下发生氧气与其中的煤粉的燃烧反应以及粉煤中的碳与蒸汽的气化反应。其中，氧气和蒸汽可共用一个气化剂入口23，即，氧气和蒸汽均通过该气化剂入口23通入粉煤气化反应腔21中。当然，也可以使气化剂入口23包括氧气入口和蒸汽入口，其中，氧气从氧气入口通入粉煤气化反应腔21内，蒸汽从蒸汽入口通入粉煤气化反应腔21内。氧气和蒸汽的通入量以及粉煤的加入量可根据实际需求进行设定，本实施例对此不作特别限定。Specifically, the pulverized coal and gasification agent introduced into the pulverizedcoal gasification furnace 2 undergo combustion and gasification reaction in the pulverized coalgasification reaction chamber 21 . The gasification agent required for pulverized coal gasification may specifically include: oxygen and steam. The pulverized coal in the pulverized coalgasification reaction chamber 21 undergoes a combustion reaction between oxygen and the pulverized coal therein and a gasification reaction between carbon in the pulverized coal and steam at a certain temperature. Wherein, oxygen and steam may share onegasification agent inlet 23 , that is, both oxygen and steam pass into the pulverized coalgasification reaction chamber 21 through thegasification agent inlet 23 . Of course, thegasification agent inlet 23 can also include an oxygen inlet and a steam inlet, wherein oxygen is introduced into the pulverized coalgasification reaction chamber 21 from the oxygen inlet, and steam is introduced into the pulverized coalgasification reaction chamber 21 from the steam inlet. The feeding amount of oxygen and steam and the adding amount of pulverized coal can be set according to actual requirements, which are not particularly limited in this embodiment.

通入块煤气化炉1中的块煤在块煤气化反应腔11内发生气化反应。具体地，由于块煤气化炉1的气体入口13与粉煤气化反应腔21连通，粉煤气化反应腔21内反应产生的气体会由气体入口13进入至块煤气化反应腔11内，与从气体入口13进入的气体发生气化反应，粉煤气化反应腔21为块煤气化反应腔11提供反应所需气化剂，最终反应生成的粗煤气经过粗煤气气体出口15排出。块煤气化反应腔11内反应产生的固体颗粒经过排渣口141进入至粉煤气化反应腔21内，与粉煤气化反应腔21内的反应物一起进行燃烧与气化反应，使得固体颗粒进一步进行气化反应，从而进一步提高了转化效率，气化反应生成的气体进一步由气体入口13进入至块煤气化炉1内，如此过程不断进行，直至反应结束。其中，块煤的加入量可根据实际需求进行具体设定，本实施例对此不作特别限定。The lump coal passed into the lump coal gasification furnace 1 undergoes a gasification reaction in the lump coalgasification reaction chamber 11 . Specifically, since thegas inlet 13 of the lump coal gasification furnace 1 is in communication with the pulverized coalgasification reaction chamber 21, the gas generated by the reaction in the pulverized coalgasification reaction chamber 21 will enter the lump coalgasification reaction chamber 11 through thegas inlet 13, and the gas from The gas entering thegas inlet 13 undergoes a gasification reaction, the pulverized coalgasification reaction chamber 21 provides the gasification agent required for the reaction for the lump coalgasification reaction chamber 11 , and the crude gas generated by the final reaction is discharged through the crudegas gas outlet 15 . The solid particles produced by the reaction in the lump coalgasification reaction chamber 11 enter into the pulverized coalgasification reaction chamber 21 through theslag discharge port 141, and undergo combustion and gasification reaction together with the reactants in the pulverized coalgasification reaction chamber 21, so that the solid particles are further The gasification reaction is carried out, thereby further improving the conversion efficiency, and the gas generated by the gasification reaction further enters into the lump coal gasification furnace 1 through thegas inlet 13, and the process continues until the reaction ends. The amount of lump coal added can be specifically set according to actual needs, which is not particularly limited in this embodiment.

也就是说，粉煤与块煤分别在粉煤气化炉2和块煤气化炉1中进行气化反应，粉煤气化反应生成的高温气体进入块煤气化反应腔11中，块煤气化反应腔11中气化反应生成的固体颗粒落入粉煤气化反应腔21中。其中，固体颗粒包括块煤残渣。That is to say, pulverized coal and lump coal undergo gasification reaction in pulverizedcoal gasifier 2 and lump coal gasifier 1 respectively, and the high-temperature gas generated by the pulverized coal gasification reaction enters the lump coalgasification reaction chamber 11, and the lump coal gasification reaction chamber The solid particles generated by the gasification reaction in 11 fall into the pulverized coalgasification reaction chamber 21 . Among them, the solid particles include lump coal residues.

其中，粉煤气化反应腔21反应产生的气体具体可包括：二氧化碳、一氧化碳、水、氢气、甲烷等。The gas produced by the reaction of the pulverized coalgasification reaction chamber 21 may specifically include: carbon dioxide, carbon monoxide, water, hydrogen, methane, and the like.

具体实现时，可以设置粉煤进料系统26，通过粉煤进料系统26向粉煤气化反应腔21内提供粉煤，粉煤进料系统26的进料口相当于上述粉煤入口22，通过设置粉煤进料系统26，使得粉煤的加入量和加入速度更容易控制。还可以设置块煤进料系统19，通过块煤进料系统19向块煤气化反应腔11内提供块煤，块煤进料系统19的进料口相当于上述块煤入口12，通过设置块煤进料系统19，使得块煤的加入量和加入速度更容易控制。In specific implementation, a pulverizedcoal feeding system 26 can be set up to provide pulverized coal into the pulverized coalgasification reaction chamber 21 through the pulverizedcoal feeding system 26. The feeding port of the pulverizedcoal feeding system 26 is equivalent to the above-mentioned pulverizedcoal inlet 22, By setting the pulverizedcoal feeding system 26, the amount and speed of adding pulverized coal are easier to control. A lumpcoal feeding system 19 can also be provided, and the lump coal is supplied into the lump coalgasification reaction chamber 11 through the lumpcoal feeding system 19. The feeding port of the lumpcoal feeding system 19 is equivalent to the above-mentionedlump coal inlet 12. Thecoal feeding system 19 makes it easier to control the addition amount and speed of lump coal.

在本实施例中，块煤气化炉1优选为移动床气化炉，粉煤气化炉2优选为流化床气化炉，这样可进一步提高块煤气化反应腔11以及粉煤气化反应腔21内反应的充分性，进一步提高块煤和粉煤的转化率。在其他实现方式中，也可以是，块煤气化炉1采用固定床，粉煤气化炉2采用气化床。In this embodiment, the lump coal gasifier 1 is preferably a moving bed gasifier, and the pulverizedcoal gasifier 2 is preferably a fluidized bed gasifier, so that the lump coalgasification reaction chamber 11 and the pulverized coalgasification reaction chamber 21 can be further improved. The adequacy of the internal reaction will further improve the conversion rate of lump coal and pulverized coal. In other implementations, it is also possible that the lump coal gasifier 1 adopts a fixed bed, and the pulverizedcoal gasifier 2 adopts a gasification bed.

本实施例提供的粉煤与块煤的耦合气化系统，通过设置粉煤气化炉2和块煤气化炉1，通过向粉煤气化炉2的粉煤气化反应腔21内通入粉煤和气化剂，使粉煤和气化剂在粉煤气化反应腔21内发生燃烧与气化反应，实现粉煤的气化；且向块煤气化炉1的块煤气化反应腔11内通入块煤，并将粉煤气化反应腔21内反应产生的气体通入块煤气化反应腔11内，以与块煤发生气化反应，即为块煤气化炉1提供气化反应所需的气化剂，在实现块煤气化的同时，使得粉煤气化炉2产生的气体得以有效利用，无需为块煤气化炉1额外设置气化剂供给源，在一定程度上节省了成本，同时使得粉煤气化炉2产生的气体得以进一步反应，提高了反应的充分性，从而提高了最终从粗煤气气体出口15排出的粗煤气中有效气的含量，且减少了粗煤气中的含尘量，进而减少了后续对粗煤气进行净化的投资；此外，通过将块煤气化反应腔11内反应产生的固体颗粒通入粉煤气化反应腔21内，使固体颗粒在粉煤气化反应腔21内进一步发生气化反应，即发生二次反应，从而提高了整体的气化效率。也就是说，本实施例提供的粉煤与块煤的耦合气化系统实现了粉煤与块煤一同气化，使块煤和粉煤均可作为煤气化的原料，一同气化实现煤气转化，避免了粉煤的堆积，平衡了粉煤与块煤供求不均的局面，提高了煤炭利用和转化效率。In the coupled gasification system for pulverized coal and lump coal provided in this embodiment, the pulverizedcoal gasifier 2 and the lump coal gasifier 1 are provided, and the pulverized coal and gas are fed into the pulverized coalgasification reaction chamber 21 of the pulverizedcoal gasifier 2. The pulverized coal and the gasification agent are burned and gasified in the pulverized coalgasification reaction chamber 21 to realize the gasification of the pulverized coal; and the lump coal is fed into the lump coalgasification reaction chamber 11 of the lump coal gasifier 1 , and pass the gas produced by the reaction in the pulverized coalgasification reaction chamber 21 into the lump coalgasification reaction chamber 11 to have a gasification reaction with the lump coal, that is, to provide the lump coal gasifier 1 with the gasification agent required for the gasification reaction , while realizing the lump coal gasification, the gas generated by the pulverizedcoal gasifier 2 can be effectively utilized, and there is no need to provide an additional gasification agent supply source for the lump coal gasifier 1, which saves the cost to a certain extent, and at the same time makes the pulverized coal gasification The gas generated by thefurnace 2 can be further reacted, which improves the sufficiency of the reaction, thereby increasing the content of effective gas in the crude gas finally discharged from the crudegas gas outlet 15, and reducing the dust content in the crude gas, thereby reducing the amount of dust contained in the crude gas. Subsequent investment in purifying the crude gas; in addition, by passing the solid particles produced by the reaction in the lump coalgasification reaction chamber 11 into the pulverized coalgasification reaction chamber 21, the solid particles are further gasified in the pulverized coalgasification reaction chamber 21 reaction, that is, a secondary reaction occurs, thereby improving the overall gasification efficiency. That is to say, the coupled gasification system of pulverized coal and lump coal provided in this embodiment realizes the co-gasification of pulverized coal and lump coal, so that both lump coal and pulverized coal can be used as raw materials for coal gasification, and gasification is realized together to realize coal gas transformation , avoid the accumulation of pulverized coal, balance the uneven supply and demand of pulverized coal and lump coal, and improve the efficiency of coal utilization and conversion.

具体实现时，可将块煤入口12设置在块煤气化炉1的顶部，将气体入口13设置在块煤气化炉1的底部，这样设置使得从块煤入口12加入的块煤的运动方向与从气体入口13进入的气体的运动方向相反，从而使得块煤在强烈的热冲击下反应的速率得以提高。In specific implementation, thelump coal inlet 12 can be arranged at the top of the lump coal gasifier 1, and thegas inlet 13 can be arranged at the bottom of the lump coal gasifier 1, so that the movement direction of the lump coal added from thelump coal inlet 12 is the same as that of thelump coal inlet 12. The moving direction of the gas entering from thegas inlet 13 is reversed, so that the reaction rate of the lump coal under the strong thermal shock is increased.

粗煤气气体出口15具体可设置在块煤气化反应腔11的上部侧壁，以利用粗煤气排出。排渣口141具体可设置在块煤气化反应腔11的底部。The crudegas gas outlet 15 may be specifically arranged on the upper side wall of the bulk coalgasification reaction chamber 11 to discharge the crude gas. Specifically, theslag discharge port 141 may be arranged at the bottom of the lump coalgasification reaction chamber 11 .

在本实施例中，块煤气化炉1具体设置在粉煤气化炉2的上方。由于气体向上运动，这样设置使得粉煤气化炉2内反应产生的气体能够更快更容易的进入至块煤气化反应腔11内；且块煤气化反应腔11反应产生的固体颗粒在重力作用下向下流动，这样设置使得固体颗粒能够更快更容易的进入至粉煤气化反应腔21内。In this embodiment, the lump coal gasifier 1 is specifically arranged above the pulverizedcoal gasifier 2 . Due to the upward movement of the gas, this arrangement enables the gas produced by the reaction in the pulverizedcoal gasification furnace 2 to enter the bulk coalgasification reaction chamber 11 more quickly and easily; and the solid particles produced by the reaction of the bulk coalgasification reaction chamber 11 under the action of gravity Downflow, this arrangement enables the solid particles to enter into the pulverized coalgasification reaction chamber 21 more quickly and easily.

进一步地，气体入口13处设置有第一分布板16。第一分布板16分别与粉煤气化反应腔21和块煤气化反应腔11连通，以使粉煤气化反应腔21内反应产生的气体经过第一分布板16进入至块煤气化反应腔11。可以理解的是，粉煤气化反应腔21内产生的气体经过第一分布板16上的气孔进入至块煤气化反应腔11，从而使得气体能够更加均匀的进入至块煤气化反应腔11，提高了反应的均匀性和反应速率，进而提高了转化率。Further, afirst distribution plate 16 is provided at thegas inlet 13 . Thefirst distribution plate 16 communicates with the pulverized coalgasification reaction chamber 21 and the lump coalgasification reaction chamber 11 respectively, so that the gas generated by the reaction in the pulverized coalgasification reaction chamber 21 enters the lump coalgasification reaction chamber 11 through thefirst distribution plate 16 . It can be understood that the gas generated in the pulverized coalgasification reaction chamber 21 enters the lump coalgasification reaction chamber 11 through the air holes on thefirst distribution plate 16, so that the gas can enter the lump coalgasification reaction chamber 11 more uniformly, thereby improving the efficiency of the gasification process. The uniformity and reaction rate of the reaction are improved, and the conversion rate is improved.

还可以在第一分布板16的上方设置第二分布板17，且第二分布板17与第一分布板16间隔设置。第二分布板17分别与第一分布板16和块煤气化反应腔11连通，以使粉煤气化反应腔21内反应产生的气体依次经过第一分布板16和第二分布板17进入至块煤气化反应腔11。也就是说，粉煤气化反应腔21反应产生的气体先从第一分布板16的气孔进入，向上流动，然后从第二分布板17的气孔进入至块煤气化反应腔11。即，通过二级分布板调整气体压力，使得气体可以更加顺利、均匀的进入块煤气化反应腔11，进而提高了反应均匀性和反应速率，提高了转化率。Asecond distribution plate 17 may also be disposed above thefirst distribution plate 16 , and thesecond distribution plate 17 and thefirst distribution plate 16 are spaced apart. Thesecond distribution plate 17 is in communication with thefirst distribution plate 16 and the block coalgasification reaction chamber 11 respectively, so that the gas generated by the reaction in the pulverized coalgasification reaction chamber 21 enters the block through thefirst distribution plate 16 and thesecond distribution plate 17 in sequence. Coalgasification reaction chamber 11 . That is to say, the gas produced by the reaction of the pulverized coalgasification reaction chamber 21 first enters from the air holes of thefirst distribution plate 16 , flows upward, and then enters the lump coalgasification reaction chamber 11 from the air holes of thesecond distribution plate 17 . That is, the gas pressure is adjusted by the secondary distribution plate, so that the gas can enter the bulk coalgasification reaction chamber 11 more smoothly and uniformly, thereby improving the reaction uniformity and reaction rate, and improving the conversion rate.

参照图1所示，具体可将第二分布板17设置为上端大、下端小的锥形分布板。将第一分布板16设置为上端小、下端大的锥形分布板。这样可在空间一定的情况下增大分布板的面积，使得分布板对气体的调整效果更好。Referring to FIG. 1 , thesecond distribution plate 17 may be configured as a conical distribution plate with a large upper end and a small lower end. Thefirst distribution plate 16 is set as a conical distribution plate with a small upper end and a large lower end. In this way, the area of the distribution plate can be increased under the condition of a certain space, so that the adjustment effect of the distribution plate on the gas is better.

具体实现时，可以在块煤气化炉1内设置排渣管14，排渣口141位于排渣管14的出口端，以使块煤气化反应腔11内反应产生的固体颗粒由排渣管14排出至粉煤气化反应腔21。其中，可将排渣管14设置在块煤气化反应腔11的底部靠中间设置。In specific implementation, aslag discharge pipe 14 may be provided in the lump coal gasification furnace 1, and theslag discharge port 141 is located at the outlet end of theslag discharge pipe 14, so that the solid particles produced by the reaction in the lump coalgasification reaction chamber 11 can be discharged from theslag discharge pipe 14. It is discharged to the pulverized coalgasification reaction chamber 21 . Wherein, theslag discharge pipe 14 can be arranged at the bottom of the lump coalgasification reaction chamber 11 near the middle.

在本实施例中，排渣管14具体位于第一分布板16和第二分布板17之间，排渣管14的入口端与第二分布板17连接，排渣管14的出口端与第一分布板16连接。具体地，粉煤气化反应腔21反应产生的气体由第一分布板16进入至第一分布板16和第二分布板17之间的形成的气室10内，在该气室10内混合均匀，接着通过第二分布板17进入至块煤气化反应腔11。块煤气化反应腔11内产生的固定颗粒可沿着第二分布板17的斜面向下滑落，从而由排渣管14的入口端进入至排渣管14中，进而由排渣管14的出口端进入至粉煤气化反应腔21内，这样使得排渣更顺畅。实际反应时，当排渣管14未排渣时，部分气体也可以经过排渣口141进入至块煤气化反应腔11。In this embodiment, theslag discharge pipe 14 is specifically located between thefirst distribution plate 16 and thesecond distribution plate 17, the inlet end of theslag discharge pipe 14 is connected to thesecond distribution plate 17, and the outlet end of theslag discharge pipe 14 is connected to thesecond distribution plate 17. Adistribution board 16 is connected. Specifically, the gas generated by the reaction of the pulverized coalgasification reaction chamber 21 enters thegas chamber 10 formed between thefirst distribution plate 16 and thesecond distribution plate 17 from thefirst distribution plate 16 , and is uniformly mixed in thegas chamber 10 , and then enter into the lump coalgasification reaction chamber 11 through thesecond distribution plate 17 . The fixed particles generated in the coalgasification reaction chamber 11 can slide down along the inclined surface of thesecond distribution plate 17, so as to enter theslag discharge pipe 14 from the inlet end of theslag discharge pipe 14, and then pass through the outlet of theslag discharge pipe 14. The end enters into the pulverized coalgasification reaction chamber 21, which makes the slag discharge smoother. During the actual reaction, when theslag discharge pipe 14 is not discharged, part of the gas can also enter into the lump coalgasification reaction chamber 11 through theslag discharge port 141 .

粉煤气化炉2的气化剂入口23可以设置在粉煤气化炉2的底部，这样使得从气化剂入口23进入的气化剂可充分与粉煤接触，使反应更加充分。具体地，气化剂入口23处还设置有第三分布板24，从气化剂入口23进入的气化剂经过第三分布板24后进入至粉煤气化反应腔21，使得进入至粉煤气化反应腔21内的气化剂更均匀。气化剂入口23与第三分布板24之间形成气室20，比如，氧气从氧气入口进入，蒸汽从蒸汽入口进入，氧气和蒸汽进入至气室20，在气室20混合，然后从第三分布板24的气孔进入至粉煤气化反应腔21内。具体地，粉煤气化炉2还具有残渣排出口25，残渣排出口25与粉煤气化反应腔21连通，粉煤气化反应腔21反应后的残渣可由残渣排出口25排出。Thegasification agent inlet 23 of the pulverizedcoal gasifier 2 can be arranged at the bottom of the pulverizedcoal gasifier 2, so that the gasification agent entering from thegasification agent inlet 23 can fully contact the pulverized coal, so that the reaction is more sufficient. Specifically, thegasification agent inlet 23 is also provided with athird distribution plate 24, and the gasification agent entering from thegasification agent inlet 23 passes through thethird distribution plate 24 and then enters the pulverized coalgasification reaction chamber 21, so that it enters the pulverized coalgasification reaction chamber 21. The gasification agent in thegasification reaction chamber 21 is more uniform. Agas chamber 20 is formed between thegasification agent inlet 23 and thethird distribution plate 24, for example, oxygen enters from the oxygen inlet, steam enters from the steam inlet, oxygen and steam enter thegas chamber 20, are mixed in thegas chamber 20, and then flow from the first The pores of the threedistribution plates 24 enter into the pulverized coalgasification reaction chamber 21 . Specifically, the pulverizedcoal gasification furnace 2 also has aresidue discharge port 25 which communicates with the pulverized coalgasification reaction chamber 21 , and the residue after the reaction in the pulverized coalgasification reaction chamber 21 can be discharged from theresidue discharge port 25 .

较为优选的，可使块煤气化反应腔11的内径大于粉煤气化反应腔21的内径，从而使得块煤气化反应腔11内的反应更加充分，进而提高了转化率。参照图1所示，此处的块煤气化反应腔11的内径为图1中块煤气化反应腔11的横向尺寸，粉煤气化反应腔21的内径为图中粉煤气化反应腔21的横向尺寸。Preferably, the inner diameter of the lump coalgasification reaction chamber 11 can be made larger than the inner diameter of the pulverized coalgasification reaction chamber 21, so that the reaction in the lump coalgasification reaction chamber 11 is more sufficient, thereby improving the conversion rate. Referring to FIG. 1 , the inner diameter of the bulk coalgasification reaction chamber 11 is the lateral dimension of the bulk coalgasification reaction chamber 11 in FIG. 1 , and the inner diameter of the pulverized coalgasification reaction chamber 21 is the lateral dimension of the pulverized coalgasification reaction chamber 21 in the figure. size.

优选的，粉煤气化反应腔21内的温度可控制在1000℃-1300℃，压力控制在0.5MPa-6MPa。块煤气化反应腔11内的压力可控制在0.5MPa-6MPa，温度控制在800℃-1100℃。Preferably, the temperature in the pulverized coalgasification reaction chamber 21 can be controlled at 1000°C-1300°C, and the pressure can be controlled at 0.5MPa-6MPa. The pressure in the lump coalgasification reaction chamber 11 can be controlled at 0.5MPa-6MPa, and the temperature can be controlled at 800°C-1100°C.

由于块煤比表面积小，故与气化剂中的蒸汽接触的面积远小于粉煤，为了提高块煤的气化反应速率，可以先在块煤的表面负载一定量的催化剂，催化剂的目的是使得块煤的反应活性增加，气化反应速率增快，催化剂的具体类型以及催化原理在下面内容具体说明。Due to the small specific surface area of lump coal, the contact area with the steam in the gasification agent is much smaller than that of pulverized coal. In order to improve the gasification reaction rate of lump coal, a certain amount of catalyst can be loaded on the surface of lump coal first. The purpose of the catalyst is to The reaction activity of the lump coal is increased, and the gasification reaction rate is increased. The specific type of the catalyst and the catalytic principle are described in detail below.

图2为本公开实施例所述的粉煤与块煤的耦合气化系统中设置有气体补充口时的结构示意图。参照图2所示，还可以在块煤气化炉1上设置与块煤气化反应腔11连通的气体补充口18，以通过气体补充口18向块煤气化反应腔11内补充蒸汽。比如，当煤的含碳量高且与蒸汽发生碳水反应的活性较高时，会出现由粉煤气化反应腔21中产生的气体中蒸汽含量不足的情况，此时可通过气体补充口18向块煤气化反应腔11内补充蒸汽。具体实现时，可将气体补充口18开设在气室10的侧壁上，使得补充的蒸汽先在气室10中与其他气体混合，然后通过第二分布板17进入块煤气化反应腔11。此外，也可以通过气体补充口18补充一氧化碳和氢气，以提高块煤气化反应腔11的转化率。此时，一氧化碳和氢气可以从同一个气体补充口18进入，也可以是，气体补充口18包括两个，一个为一氧化碳补充口，一个是氢气补充口。FIG. 2 is a schematic structural diagram of the coupled gasification system for pulverized coal and lump coal according to an embodiment of the present disclosure when a gas supply port is provided. Referring to FIG. 2 , a gassupplemental port 18 communicating with the bulk coalgasification reaction chamber 11 may also be provided on the bulk coal gasification furnace 1 , so as to supplement steam into the bulk coalgasification reaction chamber 11 through thegas supplementary port 18 . For example, when the carbon content of coal is high and the activity of carbon-water reaction with steam is high, the steam content in the gas generated in the pulverized coalgasification reaction chamber 21 may be insufficient. The bulk coalgasification reaction chamber 11 is supplemented with steam. In specific implementation, thegas supplementary port 18 can be opened on the side wall of thegas chamber 10 , so that the supplemented steam is first mixed with other gases in thegas chamber 10 , and then enters the coalgasification reaction chamber 11 through thesecond distribution plate 17 . In addition, carbon monoxide and hydrogen can also be supplemented through thegas supplement port 18 to improve the conversion rate of the lump coalgasification reaction chamber 11 . At this time, carbon monoxide and hydrogen may enter from the samegas supplement port 18, or thegas supplement port 18 may include two, one for the carbon monoxide supplement port and the other for the hydrogen supplement port.

此外，块煤气化炉1还具有与块煤气化反应腔11连通的氧气补充口，以通过氧气补充口向块煤气化反应腔11内补充氧气。比如，当上述补充的蒸汽温度较低时，使得块煤气化反应腔11的温度达不到预设温度，可以通过氧气补充口向块煤气化反应腔11中补充部分氧气，比如可以确保达到催化剂活性的温度要求。In addition, the lump coal gasification furnace 1 also has an oxygen supplement port communicated with the lump coalgasification reaction chamber 11, so that oxygen is supplemented into the lump coalgasification reaction chamber 11 through the oxygen supplement port. For example, when the temperature of the above-mentioned supplementary steam is relatively low, so that the temperature of the bulk coalgasification reaction chamber 11 cannot reach the preset temperature, a part of oxygen can be supplemented into the bulk coalgasification reaction chamber 11 through the oxygen supplementary port, for example, to ensure that the catalyst reaches the Active temperature requirements.

在本实施例中，气体补充口18和氧气补充口为同一个补充口，即，氧气可通过气体补充口18进入至块煤气化反应腔11内。当然，也可以分别设置气体补充口18和氧气补充口，通过气体补充口18向块煤气化反应腔11内补充蒸汽，通过氧气补充口向块煤气化反应腔11内补充氧气。In this embodiment, thegas supplement port 18 and the oxygen supplement port are the same supplement port, that is, oxygen can enter the bulk coalgasification reaction chamber 11 through thegas supplement port 18 . Of course, agas supply port 18 and an oxygen supply port can also be provided separately, and steam is supplied to the bulk coalgasification reaction chamber 11 through thegas supply port 18 , and oxygen is supplied to the lump coalgasification reaction chamber 11 through the oxygen supply port.

继续参照图1和图2，下面通过具体的示例对本实施例的粉煤与块煤的耦合气化系统进行进一步说明：Continuing to refer to FIG. 1 and FIG. 2 , the coupled gasification system of pulverized coal and lump coal of the present embodiment will be further described below through specific examples:

位于下方的粉煤气化炉2的反应腔温度控制在1000℃-1300℃，压力控制在0.5MPa-6MPa，原料粉煤由粉煤气化炉2底部的粉煤入口22通入粉煤气化反应腔21内，蒸汽和氧气通过第三分布板24均匀的喷入粉煤气化反应腔21内，使得该反应腔内的粉煤在高温下发生氧气与煤粉的燃烧反应和煤与蒸汽的气化反应，进而使得所有的惰性碳(此处惰性碳来自于粉煤及上方的块煤气化炉1反应后的残碳)都发生燃烧或气化反应生成更多的气体产物，同时剩余的灰分在高温条件下发生熔融，团聚成较大的颗粒由粉煤气化炉2的残渣排出口25排出炉外。粉煤气化反应腔21内气化产生的气体由粉煤气化炉2顶部的出口排出，从与该出口连通的气体入口13进入至上方的块煤气化反应腔11中，将下方的高温气体以流化介质的形式通过两级分布板：第一分布板16和第二分布板17(通过两级分布板调整高温气体压力，使得高温气体可以顺利从分布板进入块煤气化反应腔11而不是通过排渣管14进入块煤气化反应腔11)进入上方的块煤气化反应腔11内。其中下方气化剂蒸汽与下方进料粉煤的比例可以为0.5-3(质量比)，下方气化剂氧气与下方进料煤粉的比例为0.3-0.6(质量比)。The temperature of the reaction chamber of the pulverizedcoal gasifier 2 located below is controlled at 1000°C-1300°C, and the pressure is controlled at 0.5MPa-6MPa. 21, steam and oxygen are uniformly injected into the pulverized coalgasification reaction chamber 21 through thethird distribution plate 24, so that the pulverized coal in the reaction chamber undergoes combustion reaction of oxygen and pulverized coal and gasification of coal and steam at high temperature. reaction, so that all the inert carbon (here the inert carbon comes from the pulverized coal and the residual carbon after the reaction of the block coal gasifier 1 above) undergoes combustion or gasification reaction to generate more gas products, while the remaining ash is in Melting occurs under high temperature conditions, and agglomerates into larger particles, which are discharged out of the furnace through theresidue discharge port 25 of the pulverizedcoal gasifier 2 . The gas generated by gasification in the pulverized coalgasification reaction chamber 21 is discharged from the outlet at the top of the pulverizedcoal gasification furnace 2, and enters the upper block coalgasification reaction chamber 11 from thegas inlet 13 connected to the outlet, and the high temperature gas below is converted into The form of the fluidized medium passes through the two-stage distribution plate: thefirst distribution plate 16 and the second distribution plate 17 (through the two-stage distribution plate to adjust the high-temperature gas pressure, so that the high-temperature gas can smoothly enter the coalgasification reaction chamber 11 from the distribution plate instead of It enters the lump coalgasification reaction chamber 11 through the slag discharge pipe 14) and enters the upper lump coalgasification reaction chamber 11. The ratio of the lower gasification agent steam to the lower feed pulverized coal can be 0.5-3 (mass ratio), and the ratio of the lower gasification agent oxygen to the lower feed pulverized coal is 0.3-0.6 (mass ratio).

上方的高温块煤气化反应腔11的压力控制在0.5MPa-6MPa，温度控制在800℃-1100℃。由于块煤比表面积小，故与气化剂蒸汽接触的面积远小于粉煤，进而导致块煤的气化反应速率低于粉煤，为了解决块煤与粉煤消耗速率不一致的矛盾，块煤表面负载一定量的催化剂，催化剂的目的是使得块煤的反应活性增加，气化反应速率增快。催化剂的类型可为碱金属和碱土金属，或者含有碱金属和碱土金属的溶液、矿石等。催化剂可通过干混和/或喷淋的方式与块煤混合，催化剂的负载量范围0.1-50％(催化剂的质量占块煤质量的百分比)。负载催化剂后的块煤由顶部的块煤进料系统19加入上方的块煤气化反应腔11，在块煤气化反应腔11煤在热冲击的作用下表面活性官能团瞬间激活，同时催化剂离子在高温条件具有一定的流动性，活性官能团快速的捕捉催化剂离子产生更多的活性结合位为活性位碳-催化剂。气化剂(由下方粉煤气化反应腔21反应后的气体含有水、二氧化碳、一氧化碳、氢气、甲烷)在催化剂的作用下，气相中发生强放热的甲烷化反应将粉煤气化反应腔21气相中的一氧化碳和氢气在催化剂的作用下合成更多的甲烷，放出的热量促进了煤颗粒的碳-催化剂中间体的碳水反应，使得上方块煤气化反应腔11的固体碳转化为气相的一氧化碳和氢气，同时气化剂中的二氧化碳与上方块煤气化反应腔11中的块煤中的活性位碳-催化剂中间体结合被还原为更多的一氧化碳，从而生成更多的甲烷和一氧化碳。随着块煤表面有效碳的消耗，催化剂金属离子会随着蒸汽进行二次迁移，由于块煤进料系统19在块煤气化炉1的最上部，物料运动的方向与气化剂的方向相反，当块煤由进料系统下料至上方块煤气化反应腔11内时，在强烈的热冲击下块煤迅速发生热解反应，热解产生的热解气体可以快速在块煤内部形成丰富的拓扑孔道，进而使得块煤的比表面积大幅增加，这些丰富的孔道中新鲜的煤官能团可以快速捕获发生二次迁移的催化剂，从而使得甲烷化和二氧化碳还原反应不仅仅发生在块煤的表面，使得绝大部分催化反应都在块煤内部发生，进而增加了上方气化段的反应速率与反应活性。The pressure of the upper high temperature block coalgasification reaction chamber 11 is controlled at 0.5MPa-6MPa, and the temperature is controlled at 800°C-1100°C. Due to the small specific surface area of lump coal, the contact area with the vapor of the gasification agent is much smaller than that of pulverized coal, resulting in a lower gasification reaction rate of lump coal than that of pulverized coal. A certain amount of catalyst is loaded on the surface, and the purpose of the catalyst is to increase the reaction activity of lump coal and increase the gasification reaction rate. The types of catalysts may be alkali metals and alkaline earth metals, or solutions containing alkali metals and alkaline earth metals, ores, and the like. The catalyst can be mixed with the lump coal by dry mixing and/or spraying, and the catalyst loading range is 0.1-50% (the mass of the catalyst accounts for the percentage of the mass of the lump coal). The catalyst-loaded lump coal is fed into the upper lump coalgasification reaction chamber 11 from the top lumpcoal feeding system 19, and the surface active functional groups of the coal in the lump coalgasification reaction chamber 11 are instantly activated under the action of thermal shock, and the catalyst ions are activated at high temperature. The conditions have a certain fluidity, and the active functional groups quickly capture the catalyst ions to generate more active binding sites as active carbon-catalysts. Under the action of the catalyst, the gasification agent (the gas reacted by the pulverized coalgasification reaction chamber 21 below contains water, carbon dioxide, carbon monoxide, hydrogen, and methane), a strong exothermic methanation reaction occurs in the gas phase, and the pulverized coalgasification reaction chamber 21 The carbon monoxide and hydrogen in the gas phase synthesize more methane under the action of the catalyst, and the released heat promotes the carbon-water reaction of the carbon-catalyst intermediate of the coal particles, so that the solid carbon in the coalgasification reaction chamber 11 in the upper block is converted into carbon monoxide in the gas phase At the same time, the carbon dioxide in the gasification agent is combined with the active site carbon-catalyst intermediate in the lump coal in the coalgasification reaction chamber 11 in the upper square to be reduced to more carbon monoxide, thereby generating more methane and carbon monoxide. With the consumption of the available carbon on the surface of the lump coal, the catalyst metal ions will undergo secondary migration with the steam. Since the lumpcoal feeding system 19 is at the uppermost part of the lump coal gasification furnace 1, the direction of material movement is opposite to the direction of the gasification agent , when the lump coal is fed from the feeding system into the upper square coalgasification reaction chamber 11, the lump coal undergoes a rapid pyrolysis reaction under the strong thermal shock, and the pyrolysis gas generated by the pyrolysis can quickly form abundant gas inside the lump coal. The topological pore channels, which in turn greatly increase the specific surface area of lump coal, the fresh coal functional groups in these abundant channels can quickly capture the catalyst that undergoes secondary migration, so that the methanation and carbon dioxide reduction reactions do not only occur on the surface of the lump coal, making the Most of the catalytic reactions take place inside the lump coal, which increases the reaction rate and reactivity of the upper gasification section.

经过一定时间的反应及向下运动的磨损块煤的尺寸逐渐减少，当块煤直径小于一定尺寸时，含有催化剂的小颗粒块煤残渣会由排渣管14落入下方粉煤气化反应腔21，参与下方的高温燃烧和气化反应，为整个系统提供热量和高温的气化剂。进入粉煤气化反应腔21的催化剂残渣颗粒与进料粉煤混合。可选的，在机械开采的过程中，由于不同层面煤的脆性不同，导致脆性越高的煤越容易成粉，在煤质组成中煤中灰是脆性最高的组分，故在粉煤中含有较高的灰成分，而煤灰中含有大量的矿物质比如碱金属及碱土金属氧化物，该类物质具有较好的催化活性，块煤气化反应腔11落下的残渣颗粒中，含有较多的负载的催化剂，由于下方粉煤气化反应腔21的温度更高，使得催化剂迁移的活性增强，催化剂部分由残渣颗粒迁移到新鲜的粉煤颗粒表面上，并与粉煤颗粒的官能团活性位结合促进并催化下方反应腔的催化燃烧及催化气化反应，进而提高了下方反应腔气化效率。After a certain time of reaction and downward movement, the size of the abraded lump coal gradually decreases. When the diameter of the lump coal is smaller than a certain size, the small particle lump coal residue containing catalyst will fall into the pulverized coalgasification reaction chamber 21 below from theslag discharge pipe 14. , participate in the high-temperature combustion and gasification reaction below, and provide heat and high-temperature gasification agent for the entire system. The catalyst residue particles entering the pulverized coalgasification reaction chamber 21 are mixed with the feed pulverized coal. Optionally, in the process of mechanical mining, due to the different brittleness of coal at different layers, coal with higher brittleness is more likely to be pulverized. In coal composition, ash is the most brittle component, so in pulverized coal It contains high ash components, and coal ash contains a large amount of minerals such as alkali metal and alkaline earth metal oxides, which have good catalytic activity. The residue particles falling from the coalgasification reaction chamber 11 contain more For the supported catalyst, due to the higher temperature of the pulverized coalgasification reaction chamber 21 below, the catalyst migration activity is enhanced, and the catalyst part migrates from the residue particles to the surface of the fresh pulverized coal particles, and combines with the functional group active sites of the pulverized coal particles. The catalytic combustion and catalytic gasification reaction of the lower reaction chamber is promoted and catalyzed, thereby improving the gasification efficiency of the lower reaction chamber.

在下方的粉煤气化反应腔21中，随着粉煤颗粒与残碳颗粒中的碳消耗完毕，催化剂离子与煤颗粒中的灰分进行反应，灰分中的酸性氧化物和碱性氧化物在碱性金属离子的作用发生低温共熔反应，一方面使得灰分更容易团聚成灰颗粒，由残渣排出口25排出炉外。另一方面在底部有氧条件下低温共熔产物在高温条件下均被氧化为稳定的金属盐结构硅铝酸盐(自然界中稳定的岩石成分)使得排出的渣中没有任何碱金属和碱土金属，对自然和环境没有任何污染和危害。可选的，针对一些热破碎性高的煤种(入炉后在热冲击的作用下容易破碎成小颗粒)，在块煤负载催化剂的同时粉煤也负载一部分催化剂，即向粉煤负载部分(干法或湿法)易于与煤灰容易发生低温共熔的催化剂，如铁系催化剂或锰系催化剂等，一方面使得气化的速率和活性得以提高，更重要的可以使得破碎的煤颗粒表面更易于发生部分低温共熔(煤颗粒表面的灰与催化剂发生低温共熔)，进而相互粘粘成质量稍大的煤颗粒，以防过多的粉煤带入块煤气化反应腔11。In the pulverized coalgasification reaction chamber 21 below, as the carbon in the pulverized coal particles and the carbon residue particles is consumed, the catalyst ions react with the ash in the coal particles, and the acidic oxides and basic oxides in the ash are dissolved in the alkali. Low temperature eutectic reaction occurs due to the action of free metal ions, which on the one hand makes ash easier to agglomerate into ash particles, which are discharged out of the furnace through theresidue discharge port 25 . On the other hand, under aerobic conditions at the bottom, the low-temperature eutectic products are oxidized to stable metal salt structure aluminosilicates (stable rock components in nature) under high temperature conditions, so that the discharged slag does not contain any alkali metals and alkaline earth metals. , without any pollution and harm to nature and the environment. Optionally, for some types of coal with high thermal breakage (it is easy to break into small particles under the action of thermal shock after entering the furnace), while the lump coal supports the catalyst, the pulverized coal also supports a part of the catalyst, that is, the pulverized coal supports part of the catalyst. (Dry method or wet method) Catalysts that are easy to eutectic with coal ash at low temperature, such as iron-based catalysts or manganese-based catalysts, on the one hand, improve the rate and activity of gasification, and more importantly, can make broken coal particles The surface is more likely to undergo partial low-temperature eutectic (the ash on the surface of coal particles and the catalyst undergo low-temperature eutectic), and then stick to each other to form slightly larger coal particles to prevent excessive pulverized coal from being brought into the lump coalgasification reaction chamber 11 .

当煤的含碳量高且与蒸汽发生碳水反应的活性较高的情况下，在高温块煤气化反应腔11会出现下方产生的气化剂中蒸汽含量不足的情况或想要提高块煤气化反应腔11的块煤转化率，此时可通过气体补充口18向块煤气化反应腔11中补充部分蒸汽。进一步当补充的蒸汽温度较低，使得上方块煤气化反应腔11的温度达不到800℃–1100℃，可以向块煤气化反应腔11中补充部分氧气以确保达到催化剂活性的温度要求。进一步可选的，当块煤气化反应腔11中催化剂的组成中促进气体甲烷化的催化剂含量较高时(如碳酸钾等)，为了进一步提高块煤气化反应腔11的转化率，可以将后系统分离出来的一氧化碳和氢气部分返回至气化炉中(此处的一氧化碳和氢气可以是气化炉出口循环返回的一氧化碳和氢气，也可以是其他系统提供的一氧化碳和氢气主要发生三个氢气和一个一氧化碳合成一个甲烷和水的化学反应同时释放出大量的反应热)，依靠甲烷化催化剂的催化活性在炉内生成更多的甲烷同时放出的大量反应热提供给块煤气化反应腔11中的块煤进行气化反应。When the carbon content of coal is high and the activity of carbon-water reaction with steam is high, in the high-temperature lump coalgasification reaction chamber 11, the steam content in the gasification agent generated below may be insufficient, or it is desirable to improve lump coal gasification. The conversion rate of the lump coal in thereaction chamber 11 can be supplemented with part of steam in the lump coalgasification reaction chamber 11 through thegas supplement port 18 at this time. Further, when the temperature of the supplemented steam is low, so that the temperature of the upper block coalgasification reaction chamber 11 cannot reach 800°C-1100°C, some oxygen can be supplemented into the block coalgasification reaction chamber 11 to ensure that the temperature requirement for catalyst activity is met. Further optionally, when the composition of the catalyst in the bulk coalgasification reaction chamber 11 has a relatively high content of catalysts that promote gas methanation (such as potassium carbonate, etc.), in order to further improve the conversion rate of the bulk coalgasification reaction chamber 11, the latter Part of the carbon monoxide and hydrogen separated by the system is returned to the gasifier (the carbon monoxide and hydrogen here can be the carbon monoxide and hydrogen recycled from the gasifier outlet, or the carbon monoxide and hydrogen provided by other systems. The chemical reaction of one carbon monoxide to synthesize one methane and water simultaneously releases a large amount of reaction heat), relying on the catalytic activity of the methanation catalyst to generate more methane in the furnace at the same time, the released large amount of reaction heat is provided to the coalgasification reaction chamber 11. The lump coal undergoes a gasification reaction.

通过本实施例提供的系统处理产生的粗煤气中有效气的比例高，特别是一氧化碳和甲烷的占比远远高于常规气化。同时由于上方是移动床，下方是流化床，流化床的固体带出物(煤颗粒和催化剂颗粒)可以有效的被移动床床层过滤，使得出口的粗煤气中含尘量大大减少，进而减少了后续系统净化的压力节省了后续处理的投资。The ratio of effective gas in the crude gas produced by the system treatment provided by this embodiment is high, especially the ratio of carbon monoxide and methane is much higher than that of conventional gasification. At the same time, because the upper part is a moving bed and the lower part is a fluidized bed, the solids carried out of the fluidized bed (coal particles and catalyst particles) can be effectively filtered by the moving bed bed, which greatly reduces the dust content in the crude gas at the outlet. In turn, the pressure of subsequent system purification is reduced, and the investment in subsequent treatment is saved.

通过在块煤气化区域添加适量的催化剂，利用块煤形式上的特点提高了块煤捕获催化剂的能力，块煤的残渣通过高温燃烧进行二次处理，进而提高了整体气化的效率，同时又在高温排渣中将催化剂固化，使得排渣更加清洁无污染。由于出口煤气的清洁度高(高温无焦油，移动床过滤了流化床的带出物)，进而使得本工艺的投资相对传统工艺大幅降低。By adding an appropriate amount of catalyst in the lump coal gasification area, the ability of lump coal to capture catalyst is improved by utilizing the characteristics of lump coal form, and the residue of lump coal is subjected to secondary treatment through high temperature combustion, thereby improving the overall gasification efficiency, and at the same time The catalyst is solidified in the high temperature slag discharge, which makes the slag discharge cleaner and pollution-free. Due to the high cleanliness of the outlet gas (high temperature without tar, the moving bed filters out the fluidized bed), the investment of this process is greatly reduced compared to the traditional process.

图3为本公开实施例所述的粉煤与块煤的耦合气化方法的流程示意图。参照图3所示，本实施例还提供一种粉煤与块煤的耦合气化方法，该方法可以由上述实施例的粉煤与块煤的耦合气化系统的部分或者全部执行，以实现粉煤与块煤一同气化，平衡了粉煤与块煤供求不均的局面，提高了煤炭利用和转化效率。FIG. 3 is a schematic flowchart of the coupled gasification method of pulverized coal and lump coal according to an embodiment of the present disclosure. Referring to FIG. 3 , this embodiment also provides a method for coupled gasification of pulverized coal and lump coal, which may be performed by part or all of the coupled gasification system of pulverized coal and lump coal in the above-mentioned embodiment to achieve The gasification of pulverized coal and lump coal together balances the uneven supply and demand of pulverized coal and lump coal, and improves the efficiency of coal utilization and conversion.

结合图1至图3所示，下面通过具体的实施例对该粉煤与块煤的耦合气化方法进行说明，该方法具体包括：With reference to FIGS. 1 to 3 , the coupling gasification method of pulverized coal and lump coal will be described below through specific embodiments, and the method specifically includes:

S101、向粉煤气化炉2的粉煤气化反应腔21内至少通入粉煤和气化剂，以至少使粉煤和气化剂在粉煤气化反应腔21内发生燃烧与气化反应。S101. Pass at least pulverized coal and gasification agent into the pulverized coalgasification reaction chamber 21 of the pulverizedcoal gasification furnace 2, so that at least the pulverized coal and the gasification agent undergo combustion and gasification reaction in the pulverized coalgasification reaction chamber 21.

S102、向块煤气化炉1的块煤气化反应腔11内至少通入块煤，将粉煤气化反应腔21内反应产生的气体通入块煤气化反应腔11，以至少使块煤和气体在块煤气化反应腔11内发生气化反应。S102. Pass at least lump coal into the lump coalgasification reaction chamber 11 of the lump coal gasification furnace 1, and pass the gas generated by the reaction in the pulverized coalgasification reaction chamber 21 into the lump coalgasification reaction chamber 11, so as to make at least lump coal and gas The gasification reaction takes place in the lump coalgasification reaction chamber 11 .

此处需要说明的是，向块煤气化反应腔11内通入块煤可以与向粉煤气化反应腔21内通入粉煤同时进行。或者，也可以是，先向粉煤气化反应腔21内通入粉煤和气化剂，当粉煤气化反应腔21内气化反应一定时间后，再向块煤气化反应腔11内通入块煤。It should be noted here that the introduction of lump coal into the lump coalgasification reaction chamber 11 may be performed simultaneously with the introduction of pulverized coal into the pulverized coalgasification reaction chamber 21 . Alternatively, the pulverized coal and gasification agent may be introduced into the pulverized coalgasification reaction chamber 21 first, and after the gasification reaction in the pulverized coalgasification reaction chamber 21 for a certain period of time, the block coalgasification reaction chamber 11 is then introduced into the block coalgasification reaction chamber 11. coal.

S103、将块煤气化反应腔11内反应产生的固体颗粒通入粉煤气化反应腔21内，以至少使固体颗粒与粉煤、气化剂在粉煤气化反应腔21内发生燃烧与气化反应。S103. Pass the solid particles produced by the reaction in the lump coalgasification reaction chamber 11 into the pulverized coalgasification reaction chamber 21, so that at least the solid particles, pulverized coal and gasification agent are burned and gasified in the pulverized coalgasification reaction chamber 21 reaction.

可以理解的是，固体颗粒、粉煤与气化剂气化反应产生的气体进一步通过气体入口13进入至块煤气化反应腔11内参与反应。It can be understood that the gas generated by the gasification reaction of the solid particles, pulverized coal and the gasification agent further enters into the lump coalgasification reaction chamber 11 through thegas inlet 13 to participate in the reaction.

上述步骤S102中，向块煤气化炉1的块煤气化反应腔11内至少通入块煤具体可包括：In the above step S102, feeding at least lump coal into the lump coalgasification reaction chamber 11 of the lump coal gasifier 1 may specifically include:

先在块煤的表面负载催化剂，然后将负载有催化剂的块煤通入块煤气化反应腔11内。The catalyst is loaded on the surface of the lump coal first, and then the lump coal loaded with the catalyst is passed into the lump coalgasification reaction chamber 11 .

具体地，当通入至块煤气化反应腔11内的气体中的蒸汽含量低于预设蒸汽含量阈值时或者为了提高块煤气化反应腔11的块煤转化率时，该方法还包括：向块煤气化反应腔11内通入蒸汽。该预设蒸汽含量阈值可根据实际情况进行设定。Specifically, when the steam content in the gas introduced into the lump coalgasification reaction chamber 11 is lower than a preset steam content threshold or in order to improve the lump coal conversion rate of the lump coalgasification reaction chamber 11, the method further includes: to Steam is introduced into the lump coalgasification reaction chamber 11 . The preset steam content threshold can be set according to the actual situation.

进一步地，当向块煤气化反应腔11内通入的蒸汽的温度低于预设温度阈值时，该方法还包括：向所述块煤气化反应腔11内通入氧气。该预设温度阈值可根据实际情况进行设定。Further, when the temperature of the steam introduced into the bulk coalgasification reaction chamber 11 is lower than a preset temperature threshold, the method further includes: feeding oxygen into the bulk coalgasification reaction chamber 11 . The preset temperature threshold can be set according to the actual situation.

此外，上述将负载有催化剂的块煤通入块煤气化反应腔11内之后，该方法还可以包括：In addition, after passing the catalyst-loaded lump coal into the lump coalgasification reaction chamber 11, the method may further include:

向块煤气化反应腔11内补充一氧化碳和氢气。Carbon monoxide and hydrogen are supplemented into the coalgasification reaction chamber 11 .

比如可以将后系统分离出来的一氧化碳和氢气部分返回至气化炉中(此处的一氧化碳和氢气可以是气化炉出口循环返回的一氧化碳和氢气，也可以是其他系统提供的一氧化碳和氢气主要发生三个氢气和一个一氧化碳合成一个甲烷和水的化学反应同时释放出大量的反应热)，依靠甲烷化催化剂的催化活性在炉内生成更多的甲烷同时放出的大量反应热提供给块煤气化反应腔11中的块煤进行气化反应，从而进一步提高块煤气化反应腔11的转化率。For example, part of the carbon monoxide and hydrogen separated from the back system can be returned to the gasifier (the carbon monoxide and hydrogen here can be the carbon monoxide and hydrogen recycled from the gasifier outlet, or the carbon monoxide and hydrogen provided by other systems. The chemical reaction of three hydrogens and one carbon monoxide to synthesize one methane and water releases a large amount of reaction heat at the same time), relying on the catalytic activity of the methanation catalyst to generate more methane in the furnace and at the same time release a large amount of reaction heat to provide the coal gasification reaction The lump coal in thechamber 11 undergoes a gasification reaction, thereby further improving the conversion rate of the lump coalgasification reaction chamber 11 .

本实施例提供的粉煤与块煤的耦合气化方法，通过向粉煤气化炉的粉煤气化反应腔内通入粉煤和气化剂，使粉煤和气化剂在粉煤气化反应腔内发生燃烧与气化反应，实现粉煤的气化；且向块煤气化炉的块煤气化反应腔内通入块煤，并将粉煤气化反应腔内反应产生的气体通入块煤气化反应腔内，以与块煤发生气化反应，即为块煤气化炉提供气化反应所需的气化剂，在实现块煤气化的同时，使得粉煤气化炉产生的气体得以有效利用，无需为块煤气化炉额外设置气化剂供给源，在一定程度上节省了成本，同时使得粉煤气化炉产生的气体得以进一步反应，提高了反应的充分性，从而提高了最终从粗煤气气体出口排出的粗煤气中有效气的含量，且减少了粗煤气中的含尘量，进而减少了后续对粗煤气进行净化的投资；此外，通过将块煤气化反应腔内反应产生的固体颗粒通入粉煤气化反应腔内，使固体颗粒在粉煤气化反应腔内进一步发生气化反应，即发生二次反应，从而提高了整体的气化效率。也就是说，本实施例提供的方法实现了粉煤与块煤一同气化，使块煤与粉煤均可作为煤气化的原料，一同气化实现煤气转化，避免了粉煤的堆积，平衡了粉煤与块煤供求不均的局面，提高了煤炭利用和转化效率。In the coupled gasification method of pulverized coal and lump coal provided in this embodiment, the pulverized coal and gasification agent are introduced into the pulverized coal gasification reaction chamber of the pulverized coal gasifier, so that the pulverized coal and the gasification agent are in the pulverized coal gasification reaction chamber. Combustion and gasification reactions occur to realize the gasification of pulverized coal; and the lump coal is introduced into the lump coal gasification reaction chamber of the lump coal gasifier, and the gas produced by the reaction in the pulverized coal gasification reaction chamber is delivered into the lump coal gasification reaction In the cavity, the gasification reaction with the lump coal is carried out, that is, the gasification agent required for the gasification reaction is provided for the lump coal gasifier, and the gas generated by the pulverized coal gasifier can be effectively utilized while the lump coal gasification is realized. The additional supply source of gasification agent is provided for the lump coal gasifier, which saves the cost to a certain extent, and at the same time enables the gas generated by the pulverized coal gasifier to be further reacted, which improves the sufficiency of the reaction, thereby improving the final output from the crude gas gas outlet. The content of effective gas in the discharged crude gas reduces the dust content in the crude gas, thereby reducing the investment in subsequent purification of the crude gas; In the pulverized coal gasification reaction chamber, the solid particles are further gasified in the pulverized coal gasification reaction chamber, that is, a secondary reaction occurs, thereby improving the overall gasification efficiency. That is to say, the method provided in this embodiment realizes the co-gasification of pulverized coal and lump coal, so that both lump coal and pulverized coal can be used as raw materials for coal gasification, and gasification is realized together to realize gas transformation, avoiding the accumulation of pulverized coal, and balancing the The situation of uneven supply and demand of pulverized coal and lump coal has been improved, and the efficiency of coal utilization and conversion has been improved.

具体原理以及其他技术特征与上述实施例相同，并能达到相同或者类似的技术效果，在此不再一一赘述，具体可参照上述实施例的描述。The specific principles and other technical features are the same as those of the above-mentioned embodiments, and the same or similar technical effects can be achieved, which will not be repeated here.

需要说明的是，在本文中，诸如“第一”和“第二”等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。It should be noted that, in this document, relational terms such as "first" and "second" etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply these There is no such actual relationship or sequence between entities or operations. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element.

以上所述仅是本公开的具体实施方式，使本领域技术人员能够理解或实现本公开。对这些实施例的多种修改对本领域的技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本公开的精神或范围的情况下，在其它实施例中实现。因此，本公开将不会被限制于本文所述的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。The above descriptions are only specific embodiments of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure is not intended to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.