CN103160300B - Modification quality upgrading system of brown coal - Google Patents

Abstract

The invention relates to a modification quality upgrading system of brown coal, which belongs to a brown coal quality upgrading apparatus, and solves the problem that current modification quality upgrading system removes pollutants such as sulfur and mercury with low efficiency, and generated contamination gas and dust are failed to obtain effective treatment. The modification quality upgrading system also solves the problem of ineffective utilization of boiler tail gas. The modification quality upgrading system comprises an original coal bunker, a feeding apparatus, a fluidization pyrolysis apparatus, a constant flow pump, a vertical pipeline, a first-grade quality upgrading coal bunker, a horizontal pipeline, a cyclone separator, a secondary-grade coal bunker, a gas purifying apparatus and an induced draught fan. According to the invention, brown coal in the original coal bunker is predried through flue gas, and is sent to the fluidization pyrolysis apparatus through the feeding apparatus for pyrolysis quality upgrading, the coal after quality upgrading can be separated and collected through two-grade quality upgrading coal bunkers and the cyclone separator, the pyrolysis flue gas flows through the gas purifying apparatus and is introduced in the original coal bunker as a heat source for predrying and dehydrating of raw coal. The modification quality upgrading system of brown coal has the advantages of high reliability and strong coal adaptability, enhance the quality of the quality upgraded coal, and increase the cooperation removal efficiency of the pollutants such as sulfur and mercury.

Description

Translated fromChinese

一种褐煤改性提质系统A lignite modification and upgrading system

技术领域technical field

本发明属于褐煤提质装置，具体涉及一种褐煤改性提质系统，用于高效清洁低污染利用褐煤。The invention belongs to a lignite upgrading device, in particular to a lignite modification and upgrading system, which is used for efficient, clean and low-pollution utilization of lignite.

背景技术Background technique

煤炭是我国主要可利用的化石能源。随着经济的快速发展，优质煤炭资源越来越少，占我国煤炭总储量13％的煤化程度较低的褐煤资源的利用日益受到重视，但是褐煤的水分高达20-60％、挥发分含量高，易风化白燃，不利于长距离运输，直接使用的效率低；另外我国褐煤资源主要分布在内蒙古东部和云南地区，而经济发达的沿海地区的煤炭资源较缺乏，长距离运输褐煤会造成运力浪费，并且褐煤容易在运输过程中自燃而产生安全问题；同时煤炭燃烧过程排放的硫氧化物以及汞等有害物质会导致诸如酸雨等严重的环境问题，大量排放的二氧化碳也会加剧温室效应。因此研究褐煤的燃烧前改性提质，降低褐煤的水分、提高发热量、脱除硫和汞等污染物，对于褐煤的高效清洁低污染利用乃至全社会节能减排都有重要的影响。通过提质后得到的褐煤称为提质煤。Coal is the main fossil energy available in my country. With the rapid development of the economy, high-quality coal resources are becoming less and less, and the utilization of lignite resources with a low degree of coalification, which accounts for 13% of China's total coal reserves, has been paid more and more attention. However, the moisture content of lignite is as high as 20-60%, and the volatile content is high. , easily weathered and incinerated, not conducive to long-distance transportation, and the efficiency of direct use is low; in addition, China's lignite resources are mainly distributed in eastern Inner Mongolia and Yunnan, while coal resources in economically developed coastal areas are relatively scarce, and long-distance transportation of lignite will cause transport capacity. Waste, and lignite is prone to spontaneous combustion during transportation, causing safety problems; at the same time, harmful substances such as sulfur oxides and mercury emitted during coal combustion will cause serious environmental problems such as acid rain, and a large amount of carbon dioxide will also exacerbate the greenhouse effect. Therefore, research on the modification and upgrading of lignite before combustion, reducing the moisture content of lignite, increasing the calorific value, and removing pollutants such as sulfur and mercury will have an important impact on the efficient, clean and low-pollution utilization of lignite and even the energy saving and emission reduction of the whole society. The lignite obtained after upgrading is called upgraded coal.

目前国内外的褐煤提质技术主要有成型提质、非蒸发脱水提质、热解提质三类技术：成型提质技术的代表有德国的冲压成型工艺和国内的神华集团的热压成型提质工艺；非蒸发脱水提质技术的代表有美国的K-燃料工艺和日本的UBC工艺；热解提质技术的代表有德国的鲁奇三段炉低温热解工艺和中国煤炭科学研究总院的多段回转炉工艺；见邵俊杰：“褐煤提质技术现状及我国褐煤提质技术发展趋势初探”，神华科技，2009，7(2)：17-22。At present, lignite upgrading technologies at home and abroad mainly include molding upgrading, non-evaporative dehydration upgrading, and pyrolysis upgrading. technology; representatives of non-evaporative dehydration upgrading technology include K-fuel technology in the United States and UBC technology in Japan; representatives of pyrolysis upgrading technology include Lurgi three-stage furnace low-temperature pyrolysis technology in Germany and China Coal Research Institute See Shao Junjie: "The Status Quo of Lignite Upgrading Technology and a Preliminary Study on the Development Trend of Lignite Upgrading Technology in my country", Shenhua Science and Technology, 2009, 7(2): 17-22.

国内褐煤提质工艺由于发展历程较短，同国外仍有很大的差距，近年来才在技术和设备上有所提升。国内现有的回转炉干燥系统因气固接触不良而影响传热效果；振动流化床热解提质工艺复杂、对设备要求很高；现有的褐煤提质系统偏重于尽可能脱除水分而较少关注提质过程中产生的污染物，公开日期为2008年9月10日、公开号为CN101260307A的中国专利公开了“一种褐煤干燥提质装置及工艺方法”，公开日期为2012年10月3日、公开号为CN202465597U的中国实用新型专利公开了“一种流化床煤热解装置”，两者都没有关注热解提质过程中产生的硫汞等污染物，也未设置烟气净化装置，可能会造成环境污染。Due to the short development history of domestic lignite upgrading technology, there is still a big gap with foreign countries, and the technology and equipment have only been improved in recent years. The existing domestic rotary kiln drying system affects the heat transfer effect due to poor gas-solid contact; the vibrating fluidized bed pyrolysis upgrading process is complex and requires high equipment; the existing lignite upgrading system focuses on removing moisture as much as possible And less attention is paid to the pollutants produced during the upgrading process. The Chinese patent with a publication date of September 10, 2008 and a publication number of CN101260307A discloses "a lignite drying and upgrading device and process method", and the publication date is 2012. On October 3, the Chinese utility model patent with the publication number CN202465597U disclosed "a fluidized bed coal pyrolysis device". The flue gas purification device may cause environmental pollution.

发明内容Contents of the invention

本发明提供一种褐煤改性提质系统，解决现有褐煤改性提质系统所存在的脱除褐煤中的硫、汞等污染物的效率较低，褐煤提质过程中产生的污染性气体和粉尘未能得到有效处理的问题，同时解决锅炉尾气的热量未能得到有效利用的问题，以实现褐煤资源的高效低污染开发利用。The invention provides a lignite modification and upgrading system, which solves the low efficiency of removing pollutants such as sulfur and mercury in lignite existing in the lignite modification and upgrading system, and the polluting gas generated during the lignite upgrading process. and dust can not be effectively treated, and at the same time solve the problem that the heat of boiler exhaust gas cannot be effectively used, so as to realize the high-efficiency and low-pollution development and utilization of lignite resources.

本发明所提供的一种褐煤改性提质系统，包括原煤仓、给料装置、流化热解装置，所述原煤仓、给料装置和流化热解装置依次通过管道连接，其特征在于：A lignite modification and upgrading system provided by the present invention includes a raw coal bunker, a feeding device, and a fluidized pyrolysis device, and the raw coal bunker, the feeding device, and the fluidized pyrolysis device are sequentially connected through pipelines, and is characterized in that :

所述流化热解装置由电阻加热炉、封闭箱体及布风板构成，所述封闭箱体位于电阻加热炉内，所述封闭箱体上端面左侧具有进料口，封闭箱体下底面右侧具有出料排气口，所述封闭箱体左端壁内部在进料口下方连接有布风板支架；所述布风板由金属孔板3-3-2和覆盖其表面的金属纱网3-3—1构成，布风板左端由布风板支架支撑，布风板右端由封闭箱体的右端壁支撑，使得布风板倾斜设置在所述封闭箱体内进料口和出料排气口之间，将封闭箱体内分隔为上空间和下空间；所述封闭箱体左端面下部具有液体输入口，所述封闭箱体的前后侧壁对应下空间部位具有多个均匀分布的进气口；所述液体输入口通过恒流泵和管道连接液体源，所述进气口通过管道连接气体源；The fluidized pyrolysis device is composed of a resistance heating furnace, a closed box and an air distribution plate. The closed box is located in the resistance heating furnace. There is a discharge outlet on the right side of the bottom surface, and the inside of the left end wall of the closed box is connected with an air distribution plate bracket under the feed port; the air distribution plate is composed of a metal orifice plate 3-3-2 and a metal covering its surface. The gauze is composed of 3-3-1, the left end of the air distribution plate is supported by the air distribution plate bracket, and the right end of the air distribution plate is supported by the right end wall of the closed box, so that the air distribution plate is installed obliquely at the inlet and outlet of the closed box. Between the exhaust ports, the closed box is divided into an upper space and a lower space; the lower part of the left end surface of the closed box has a liquid input port, and the front and rear side walls of the closed box correspond to the lower space. An air inlet; the liquid input port is connected to a liquid source through a constant flow pump and a pipeline, and the air inlet is connected to a gas source through a pipeline;

所述流化热解装置的出料排气口通过垂直管道连接一级提质煤仓，所述垂直管道侧壁通过水平管道连接旋风分离器，所述旋风分离器的出料口连接二级提质煤仓，所述旋风分离器的排气口通过管道连接气体净化装置的进气口，所述气体净化装置的出气口通过引风机和管道连接到原煤仓的底部；所述液体源内的液体为水、乙醇或甲醇；所述气体源内的气体为锅炉尾部烟气、二氧化碳或氮气。The discharge outlet of the fluidized pyrolysis device is connected to the first-stage upgrading coal bunker through a vertical pipe, the side wall of the vertical pipe is connected to the cyclone separator through a horizontal pipe, and the discharge port of the cyclone separator is connected to the second-stage coal bunker. Upgrading coal bunker, the exhaust port of the cyclone separator is connected to the air inlet of the gas purification device through a pipeline, and the gas outlet of the gas purification device is connected to the bottom of the raw coal bunker through an induced draft fan and a pipeline; The liquid is water, ethanol or methanol; the gas in the gas source is boiler tail flue gas, carbon dioxide or nitrogen.

使用本发明进行褐煤改性提质，其过程为：(1)褐煤在原煤仓中预干燥进行第一级脱水提质后送入给料装置；(2)通过给料装置将褐煤送入流化热解装置进行改性提质，然后大部分提质煤将进入一级提质煤仓，其余提质煤由气体携带进入旋风分离器；(3)经旋风分离器分离的提质煤进入二级提质煤仓，尾气进入气体净化装置除掉灰尘以及气体污染物；(4)引风机将气体净化装置中的尾气作为原煤预干燥热源送入原煤仓后排出。Using the present invention to carry out lignite modification and upgrading, the process is as follows: (1) the lignite is pre-dried in the raw coal bunker for first-stage dehydration and upgrading, and then sent to the feeding device; (2) the lignite is sent into the stream through the feeding device The pyrolysis device is modified and upgraded, and then most of the upgraded coal will enter the first-level upgraded coal bunker, and the rest of the upgraded coal will be carried by the gas into the cyclone separator; (3) The upgraded coal separated by the cyclone separator will enter In the second-level upgrading coal bunker, the tail gas enters the gas purification device to remove dust and gas pollutants; (4) the induced draft fan sends the tail gas in the gas purification device into the raw coal bunker as the raw coal pre-drying heat source and then discharges it.

本发明中，流化热解装置可以通过电阻加热炉来控制热解温度，可以通过调节布风板支架的高度来改变布风板倾斜角度来控制反应时间，从而提高换热效率和煤种适应性；两级提质煤仓，可以缓解对旋风分离器的磨损；可以使用恒流泵输入不同液体来制造不同气氛，提高褐煤品质以及污染物脱除效率；流化热解装置的气体源可以采用具有一定温度电厂锅炉尾气，而提质后产生的烟气经净化后再次使用，既经济又环保；不需要振动装置，降低了制造运行难度，可使系统更加稳定、安全；可以大规模推广运用，实现褐煤资源的高效低污染开发利用。In the present invention, the fluidized pyrolysis device can control the pyrolysis temperature through a resistance heating furnace, and can control the reaction time by adjusting the height of the air distribution plate support to change the inclination angle of the air distribution plate, thereby improving heat exchange efficiency and adapting to coal types. The two-stage upgrading coal bunker can alleviate the wear and tear on the cyclone separator; the constant flow pump can be used to input different liquids to create different atmospheres, improve the quality of lignite and the removal efficiency of pollutants; the gas source of the fluidized pyrolysis device can be Using exhaust gas from a power plant boiler with a certain temperature, and the flue gas produced after upgrading is purified and reused, which is economical and environmentally friendly; no vibration device is required, which reduces the difficulty of manufacturing and operation, making the system more stable and safe; it can be popularized on a large scale To realize the efficient and low-pollution development and utilization of lignite resources.

附图说明Description of drawings

图1为本发明结构示意图，图中标记：原煤仓1、给料装置2、流化热解装置3、恒流泵4、垂直管道5、一级提质煤仓6、水平管道7、旋风分离器8、二级提质煤仓9、气体净化装置10、引风机11。Fig. 1 is a schematic diagram of the structure of the present invention, marked in the figure:raw coal bunker 1,feeding device 2, fluidizedpyrolysis device 3,constant flow pump 4,vertical pipeline 5, primary upgradingcoal bunker 6,horizontal pipeline 7, cyclone Separator 8, secondary upgradingcoal bunker 9,gas purification device 10, induceddraft fan 11.

图2为流化热解装置结构示意图，图中标记：电阻加热炉3-1、封闭箱体3—2、封闭箱体上端面3—2—1、封闭箱体下底面3—2—2、布风板3—3、金属孔板3—3—2、金属纱网3—3—1、进料口3—4、出料排气口3—5、布风板支架3—6、液体输入口3—7、进气口3—8。Figure 2 is a schematic diagram of the structure of the fluidized pyrolysis device, marked in the figure: resistance heating furnace 3-1, closed box 3-2, closed box upper end surface 3-2-1, closed box lower bottom surface 3-2-2 , air distribution plate 3-3, metal orifice plate 3-3-2, metal gauze 3-3-1, material inlet 3-4, discharge outlet 3-5, air distribution plate bracket 3-6, Liquid input port 3-7, air inlet 3-8.

具体实施方式Detailed ways

以下结合附图和实施例对本发明进一步说明。The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

如图1所示，本发明的实施例，包括原煤仓1、给料装置2、流化热解装置3、恒流泵4、垂直管道5、一级提质煤仓6、水平管道7、旋风分离器8、二级提质煤仓9、气体净化装置10和引风机11；所述原煤仓1、给料装置2和流化热解装置3依次通过管道连接；As shown in Figure 1, an embodiment of the present invention includes araw coal bunker 1, afeeding device 2, a fluidizedpyrolysis device 3, aconstant flow pump 4, avertical pipeline 5, a primary upgradingcoal bunker 6, ahorizontal pipeline 7,Cyclone separator 8, secondary upgradingcoal bunker 9,gas purification device 10 and induceddraft fan 11; theraw coal bunker 1,feeding device 2 and fluidizedpyrolysis device 3 are connected through pipelines in sequence;

如图2所示，所述流化热解装置3由电阻加热炉3—1、封闭箱体3-2及布风板3-3构成，所述封闭箱体3-2位于电阻加热炉3—1内，所述封闭箱体上端面3-2—1左侧具有进料口3-4，封闭箱体下底面3-2-2右侧具有出料排气口3-5，所述封闭箱体3-2左端壁内部在进料口3-4下方连接有布风板支架3-6；所述布风板3-3由金属孔板3-3-2和覆盖其表面的金属纱网3-3—1构成，布风板3-3左端由布风板支架3-6支撑，布风板3-3右端由封闭箱体3-2的右端壁支撑，使得布风板3-3倾斜设置在所述封闭箱体3-2内进料口3-4和出料排气口3-5之间，将封闭箱体内分隔为上空间和下空间；所述封闭箱体3-2左端面下部具有液体输入口3-7，所述封闭箱体3-2的前后侧壁对应下空间部位具有多个均匀分布的进气口3—8；As shown in Figure 2, the fluidizedpyrolysis device 3 is composed of a resistance heating furnace 3-1, a closed box 3-2 and an air distribution plate 3-3, and the closed box 3-2 is located in the resistance heating furnace 3 -1, the upper end surface 3-2-1 of the closed box has a material inlet 3-4 on the left side, and the lower bottom surface 3-2-2 of the closed box has a discharge outlet 3-5 on the right side. The inside of the left end wall of the closed box 3-2 is connected with an air distribution plate bracket 3-6 under the feed port 3-4; the air distribution plate 3-3 is composed of a metal orifice plate 3-3-2 and a metal covering its surface The gauze 3-3-1 is formed, the left end of the air distribution plate 3-3 is supported by the air distribution plate support 3-6, and the right end of the air distribution plate 3-3 is supported by the right end wall of the closed box 3-2, so that the air distribution plate 3-3 3 is obliquely arranged between the feed port 3-4 and the discharge exhaust port 3-5 in the closed box 3-2, and divides the closed box into an upper space and a lower space; the closed box 3- 2 The lower part of the left end face has a liquid input port 3-7, and the front and rear side walls of the closed box 3-2 have a plurality of evenly distributed air inlets 3-8 corresponding to the lower space;

如图1、图2所示，所述液体输入口3-7通过恒流泵4和管道连接液体源，所述进气口3—8通过管道连接气体源；所述流化热解装置3的出料排气口3-5通过垂直管道5连接一级提质煤仓6，所述垂直管道5侧壁通过水平管道7连接旋风分离器8，所述旋风分离器8的出料口连接二级提质煤仓9，所述旋风分离器8的排气口通过管道连接气体净化装置10的进气口，所述气体净化装置10的出气口通过引风机11和管道连接到原煤仓1底部。As shown in Figures 1 and 2, the liquid input port 3-7 is connected to a liquid source through aconstant flow pump 4 and a pipeline, and the gas inlet 3-8 is connected to a gas source through a pipeline; the fluidizedpyrolysis device 3 The discharge outlet 3-5 of the discharge port is connected to the first-level upgradedcoal bunker 6 through thevertical pipeline 5, and the side wall of thevertical pipeline 5 is connected to thecyclone separator 8 through thehorizontal pipeline 7, and the discharge port of thecyclone separator 8 is connected to Secondary upgradingcoal bunker 9, the exhaust port of thecyclone separator 8 is connected to the air inlet of thegas purification device 10 through a pipeline, and the gas outlet of thegas purification device 10 is connected to theraw coal bunker 1 through an induceddraft fan 11 and a pipeline bottom.

本实施例中，给料装置2采用新乡市恒远振动机械有限公司的LS型螺旋给料器，恒流泵4采用上海沪西分析仪器有限公司的HL-5数字显示型恒流泵，旋风分离器8采用南京寿旺机械设备有限公司的钢制旁路式旋风分离器，气体净化装置10采用江苏泽铭环境工程有限公司的SF型水膜脱硫除尘器，电阻加热炉采用湖北英山建力电炉制造有限公司的SX2型箱式电阻炉，引风机11采用淄博泽发风机有限公司的Y5-47锅炉引风机；In this embodiment, thefeeding device 2 adopts the LS type screw feeder of Xinxiang Hengyuan Vibration Machinery Co., Ltd., theconstant flow pump 4 adopts the HL-5 digital display constant flow pump of Shanghai Huxi Analytical Instrument Co., Ltd., and the cyclone Separator 8 adopts steel bypass cyclone separator from Nanjing Shouwang Machinery Equipment Co., Ltd.,gas purification device 10 adopts SF water film desulfurization and dust collector from Jiangsu Zeming Environmental Engineering Co., Ltd., and resistance heating furnace adopts Hubei Yingshan Construction Co., Ltd. The SX2 box-type resistance furnace of Lidian Furnace Manufacturing Co., Ltd., the induceddraft fan 11 adopts the Y5-47 boiler induced draft fan of Zibo Zefa Fan Co., Ltd.;

本实施例中，液体源采用乙醇，气体源采用氮气；亦可以不输入液体，采用锅炉尾部烟气作为气体源。In this embodiment, ethanol is used as the liquid source, and nitrogen is used as the gas source; it is also possible to use boiler tail flue gas as the gas source without inputting liquid.

本褐煤改性提质系统的工艺流程是：将含水量高的褐煤由输煤皮带送入原煤仓1，原煤仓1的底部持续通入热解产生的烟气进行第一级干燥，除去外在水分，然后通过给料装置2将预干燥的褐煤输送到流化热解装置3的布风板3-3上，进行第二级热解提质，通过进气口3—8送入的氮气与恒流泵4送入的乙醇(高温下会气化)在流化热解装置3的下部空间进行混合，然后穿过布风板3-3，布风板3-3的倾斜角度在1°～10°(相对封闭箱体下底面)之间，此时布风板3-3上的褐煤在重力和气流的浮力共同作用之下从上往下流动到出料排气口3—5，颗粒较大的大部分提质煤会在重力作用下直接进入一级提质煤仓6，其余颗粒较小的提质煤随气流携带进入旋风分离器8中分离后，在二级提质煤仓9中收集，分离后的烟气进入气体净化装置10中除去含硫、含汞等污染物气体和粉尘，净化后仍有一定温度的烟气在引风机11的作用下送入原煤仓1中，对褐煤进行第一级干燥脱水。The technical process of this lignite modification and upgrading system is as follows: the lignite with high water content is sent to theraw coal bunker 1 by the coal conveying belt, and the bottom of theraw coal bunker 1 is continuously fed with the flue gas produced by pyrolysis for the first stage of drying to remove the external In the water, the pre-dried lignite is then transported to the air distribution plate 3-3 of the fluidizedpyrolysis device 3 through thefeeding device 2, and the second-stage pyrolysis upgrade is carried out, and the lignite sent in through the air inlet 3-8 Nitrogen and the ethanol (can be vaporized at high temperature) sent by theconstant flow pump 4 are mixed in the lower space of the fluidizedpyrolysis device 3, and then pass through the air distribution plate 3-3, and the inclination angle of the air distribution plate 3-3 is at Between 1° and 10° (relative to the lower bottom surface of the closed box), at this time, the lignite on the air distribution plate 3-3 flows from top to bottom to the discharge outlet 3-3 under the joint action of gravity andair buoyancy 5. Most of the upgraded coal with larger particles will directly enter the first-stage upgradedcoal bunker 6 under the action of gravity, and the rest of the upgraded coal with smaller particles will be carried by the airflow into thecyclone separator 8 for separation, and will be separated in the second-stage upgradedcoal bunker 6. The separated flue gas enters thegas purification device 10 to remove pollutants such as sulfur and mercury and dust, and the flue gas that still has a certain temperature after purification is sent to the raw coal under the action of the induceddraft fan 11. Inbin 1, the lignite is dried and dehydrated in the first stage.

流化床装置的热源由电阻加热炉3-1提供，热解温度可以从室温调节到1000℃，可以根据不同煤种类型和进入流化热解装置的气体的温度来调节其温度，本褐煤提质系统中一般设置在150-600℃范围内。在生产过程中可以通过调节电阻加热炉3—1的反应温度、给料装置2的给料速度、控制恒流泵4的输入液体种类和送入不同气体来制造不同提质气氛、改变布风板3-3的角度等四个条件来提高对不同煤种的适应性，增大含硫、含汞污染物以及粉尘的脱除效率，并进一步的提高褐煤的利用价值。The heat source of the fluidized bed device is provided by a resistance heating furnace 3-1, and the pyrolysis temperature can be adjusted from room temperature to 1000°C. The temperature can be adjusted according to different types of coal and the temperature of the gas entering the fluidized pyrolysis device. This lignite The upgrading system is generally set within the range of 150-600°C. In the production process, it is possible to create different quality-enhancing atmospheres and change the air distribution by adjusting the reaction temperature of the resistance heating furnace 3-1, the feeding speed of thefeeding device 2, controlling the input liquid type of theconstant flow pump 4, and feeding different gases. Plate 3-3 and other four conditions to improve the adaptability to different coal types, increase the removal efficiency of sulfur-containing, mercury-containing pollutants and dust, and further improve the utilization value of lignite.

Claims (1)

Translated fromChinese

1.一种褐煤改性提质系统，包括原煤仓(1)、给料装置(2)、流化热解装置(3)，所述原煤仓(1)、给料装置(2)和流化热解装置(3)依次通过管道连接，其特征在于：1. A lignite modification and upgrading system, comprising raw coal bunker (1), feeding device (2), fluidized pyrolysis device (3), described raw coal bunker (1), feeding device (2) and flow Pyrolysis device (3) is connected by pipeline successively, it is characterized in that:所述流化热解装置(3)由电阻加热炉(3—1)、封闭箱体(3-2)及布风板(3-3)构成，所述封闭箱体(3-2)位于电阻加热炉(3—1)内，所述封闭箱体上端面(3-2-1)左侧具有进料口(3-4)，封闭箱体下底面(3-2-2)右侧具有出料排气口(3-5)，所述封闭箱体(3-2)左端壁内部在进料口(3-4)下方连接有布风板支架(3—6)；所述布风板(3-3)由金属孔板(3-3-2)和覆盖其表面的金属纱网(3-3—1)构成，布风板(3-3)左端由布风板支架(3-6)支撑，布风板(3-3)右端由封闭箱体(3-2)的右端壁支撑，使得布风板(3-3)倾斜设置在所述封闭箱体(3-2)内进料口(3-4)和出料排气口(3-5)之间，将封闭箱体内分隔为上空间和下空间；所述封闭箱体(3-2)左端面下部具有液体输入口(3-7)，所述封闭箱体(3-2)的前后侧壁对应下空间部位具有多个均匀分布的进气口(3-8)；所述液体输入口(3—7)通过恒流泵(4)和管道连接液体源，所述进气口(3—8)通过管道连接气体源；The fluidized pyrolysis device (3) is composed of a resistance heating furnace (3-1), a closed box (3-2) and an air distribution plate (3-3), and the closed box (3-2) is located at In the resistance heating furnace (3-1), there is a feed inlet (3-4) on the left side of the upper end surface (3-2-1) of the closed box body, and the right side of the lower bottom surface (3-2-2) of the closed box body It has a discharge outlet (3-5), and the inside of the left end wall of the closed box (3-2) is connected with an air distributor bracket (3-6) under the feed inlet (3-4); The wind plate (3-3) is made of a metal hole plate (3-3-2) and a metal gauze (3-3-1) covering its surface, and the left end of the air distribution plate (3-3) is formed by the air distribution plate support (3 -6) support, the right end of the air distribution plate (3-3) is supported by the right end wall of the closed box (3-2), so that the air distribution plate (3-3) is obliquely arranged on the closed box (3-2) Between the inner feed port (3-4) and the discharge exhaust port (3-5), the closed box is divided into an upper space and a lower space; the lower part of the left end surface of the closed box (3-2) has a liquid The input port (3-7), the front and rear side walls of the closed box (3-2) have a plurality of evenly distributed air inlets (3-8) corresponding to the lower space; the liquid input port (3-7) ) is connected to a liquid source through a constant flow pump (4) and a pipeline, and the air inlet (3-8) is connected to a gas source through a pipeline;所述流化热解装置(3)的出料排气口(3-5)通过垂直管道(5)连接一级提质煤仓(6)，所述垂直管道(5)侧壁通过水平管道(7)连接旋风分离器(8)，所述旋风分离器(8)的出料口连接二级提质煤仓(9)，所述旋风分离器(8)的排气口通过管道连接气体净化装置(10)的进气口，所述气体净化装置(10)的出气口通过引风机(11)和管道连接到原煤仓(1)底部；The discharge outlet (3-5) of the fluidized pyrolysis device (3) is connected to the first-level upgrading coal bunker (6) through a vertical pipe (5), and the side wall of the vertical pipe (5) is passed through a horizontal pipe (7) Connect the cyclone separator (8), the outlet of the cyclone separator (8) is connected to the secondary upgrading coal bunker (9), and the exhaust port of the cyclone separator (8) is connected to the gas outlet through the pipeline. The air inlet of purification device (10), the air outlet of described gas purification device (10) is connected to raw coal bunker (1) bottom by induced draft fan (11) and pipeline;所述液体源内的液体为水、乙醇或甲醇；所述气体源内的气体为锅炉尾部烟气、二氧化碳或氮气。The liquid in the liquid source is water, ethanol or methanol; the gas in the gas source is boiler tail gas, carbon dioxide or nitrogen.

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