CN102183135B - Two-stage drying and gasification integrated device and method of organic matter - Google Patents

Abstract

Translated fromChinese

一种有机物两级干燥与气化一体化的装置及方法，包括气化装置，两级干燥装置，煤气净化装置，储气装置，燃气锅炉、空气预热装置。在有机物的两级干燥过程中，一级利用有机物气化过程中产生的高温可燃气体作为干燥介质对有机物进行干燥，另外一级利用饱和水蒸气作为干燥介质对有机物进行干燥。经过两级干燥后的有机物作为固体燃料进行气化反应。气化产生的高温可燃气体的显热和可燃气体的自身热值作为两级干燥所需的能量来源。本发明将有机物的两级干燥与有机物气化过程相结合，可充分利用有机物中蕴含的热值，实现外来能源的零供给并且有效解决了气化燃气的净化问题。

A device and method for integrating two-stage drying and gasification of organic matter, including a gasification device, a two-stage drying device, a gas purification device, a gas storage device, a gas boiler, and an air preheating device. In the two-stage drying process of organic matter, the first stage uses the high-temperature combustible gas produced in the gasification process of organic matter as the drying medium to dry the organic matter, and the other stage uses saturated water vapor as the drying medium to dry the organic matter. The organic matter after two-stage drying is used as solid fuel for gasification reaction. The sensible heat of the high-temperature combustible gas produced by gasification and the self-calorific value of the combustible gas are used as the energy sources required for the two-stage drying. The invention combines the two-stage drying of organic matter with the gasification process of organic matter, can make full use of the calorific value contained in the organic matter, realize zero supply of external energy and effectively solve the problem of purification of gasification gas.

Description

Translated fromChinese

一种有机物两级干燥与气化一体化的装置及方法A device and method for integrating two-stage drying and gasification of organic matter

技术领域technical field

本发明涉及环保领域，尤其涉及一种有机物的干燥及资源化利用方法，特别是利用有机物气化所产生可热气体和过程热量，通过不同的干燥过程实现对高湿有机物干燥的方法。 The invention relates to the field of environmental protection, in particular to a method for drying and resource utilization of organic matter, in particular to a method for drying high-humidity organic matter through different drying processes by using heatable gas and process heat generated by gasification of organic matter. the

背景技术Background technique

含水率为80％或者更高的高湿有机物如城市有机物的处理主要有厌氧消化法、干燥法、焚烧法几种。厌氧消化法主要通过厌氧发酵过程产生甲烷气体，实现了高湿有机物的能源化利用，但经过厌氧过程后产生的有机物低泥含水率依然很高，难以后续处理。 The treatment of high-humidity organic matter with a moisture content of 80% or higher, such as urban organic matter, mainly includes anaerobic digestion, drying, and incineration. The anaerobic digestion method mainly produces methane gas through the anaerobic fermentation process, and realizes the energy utilization of high-humidity organic matter, but the organic matter produced after the anaerobic process has a high low-sludge moisture content, which is difficult to follow-up treatment. the

干燥法以降低有机物中的水分为主，通过干燥有机物的体积、重量大幅降低，单位质量有机物热值提高。有机物经过干燥后，可以用于填埋，可以用于生产其他有用产品，也可以用于焚烧以回收能源，减少占地量等。干燥可实现高湿有机物的减容化、减量化和资源化。使有机物的性状大大改善，但有机物干燥过程中要消耗大量的热量用于将有机物中的水分蒸发掉，将消耗巨大的能量。 The drying method is mainly to reduce the moisture in the organic matter, and the volume and weight of the dried organic matter are greatly reduced, and the calorific value per unit mass of the organic matter is increased. After drying, the organic matter can be used for landfill, can be used to produce other useful products, and can also be used for incineration to recover energy, reduce land occupation, etc. Drying can realize volume reduction, volume reduction and recycling of high-humidity organic matter. The properties of the organic matter are greatly improved, but a large amount of heat is consumed in the drying process of the organic matter for evaporating the water in the organic matter, which will consume a huge amount of energy. the

有机物一般含有较高的热值，干燥后的有机物可以作为低热值燃料替代煤，减少对煤的消耗以节约资源。气化方法处理有机物是一种有效减少有机物体积，回收有机物热值的方法，可以大大减少有机物的体积，实现的资源化利用。有机物气化过程中产生的高温可燃气和可燃气体中蕴含的热值可以作为有机物干燥所需的热量来源。气化即可以节约能源，又实现了有机物的无害化和资源化。 Organic matter generally has a high calorific value, and the dried organic matter can be used as a low calorific value fuel to replace coal, reducing the consumption of coal and saving resources. The gasification method to treat organic matter is a method to effectively reduce the volume of organic matter and recover the calorific value of organic matter. It can greatly reduce the volume of organic matter and realize resource utilization. The high-temperature combustible gas produced during the gasification of organic matter and the calorific value contained in the combustible gas can be used as the heat source for drying organic matter. Gasification can not only save energy, but also realize the harmlessness and recycling of organic matter. the

经检索发现了专利申请号为200480028969.4、名称为“处理有机物的方法 和装置”的技术方案。该方案中提到了有机物的气化热解产气直接进入气体净化工序，这种方式容易造成管路的堵塞并会产生大量的废水，另外该方案中的气化热解产气直接用于动力回收而非两级干燥。 After searching, it was found that the patent application number is 200480028969.4, and the technical solution named "method and device for processing organic matter" was found. In this plan, it is mentioned that the gasification and pyrolysis of organic matter directly enters the gas purification process. This method is likely to cause blockage of the pipeline and generate a large amount of waste water. In addition, the gasification and pyrolysis of the plan is directly used for power. Recycling instead of two-stage drying. the

发明内容Contents of the invention

本发明针对高湿有机物在干燥脱水过程中需要消耗大量的能量的问题，提供一种利用有机物自身蕴含的热值通过气化反应为高湿有机物的干化过程提供能源。通过两级干燥工艺，充分利用有机物气化过程中的显热和气化可燃气体的热量，实现对有机物干燥过程所需能量的供给。建立一套以有机物两级干燥和有机物气化设备为主体的基于能量平衡的有机物干燥气化系统，达到有机物干燥低成本化、能量循环利用的目的。 The invention aims at the problem that high-humidity organic matter needs to consume a large amount of energy in the drying and dehydration process, and provides a method of using the heat value contained in the organic matter itself to provide energy for the drying process of high-humidity organic matter through gasification reaction. Through the two-stage drying process, the sensible heat in the gasification process of organic matter and the heat of gasification combustible gas are fully utilized to realize the supply of energy required for the drying process of organic matter. Establish a set of organic matter drying and gasification system based on energy balance with two-stage organic matter drying and organic matter gasification equipment as the main body, so as to achieve the purpose of low cost of organic matter drying and energy recycling. the

本发明提供的一种有机物两级干燥与气化一体化装置包括气化装置、两级干燥装置、煤气净化装置、储气装置、燃气锅炉和空气预热装置。气化装置上段出气口经旋风分离装置与一级干燥装置入口连接；另外一级干燥装置的物料出口与气化装置的物料进口连接；煤气净化装置出口管道与储气装置进口管道连接；储气装置出口管道与燃气锅炉燃气输送管道连接。高压鼓风机经空气预热装置后与气化装置空气入口管道和燃气锅炉空气入口管道连接。燃气锅炉水蒸汽管道与一级有机物干燥装置连接。一级有机物干燥装置的有机物出口端与另外一级有机物装置的物料进口端连接。 A two-stage drying and gasification integrated device for organic matter provided by the invention includes a gasification device, a two-stage drying device, a gas purification device, a gas storage device, a gas boiler and an air preheating device. The gas outlet of the upper part of the gasification device is connected to the inlet of the first-stage drying device through the cyclone separation device; the material outlet of the other-stage drying device is connected to the material inlet of the gasification device; the outlet pipe of the gas purification device is connected to the inlet pipe of the gas storage device; the gas storage The outlet pipe of the device is connected with the gas delivery pipe of the gas boiler. After passing through the air preheating device, the high-pressure blower is connected with the air inlet pipe of the gasification device and the air inlet pipe of the gas boiler. The water steam pipeline of the gas boiler is connected with the first-level organic matter drying device. The organic matter outlet port of the first-stage organic matter drying device is connected with the material inlet end of another stage organic matter device. the

使用上述装置的有机物两级干燥与气化一体化方法，包括有机物的两级干燥过程、有机物气化过程和热量回收过程。 The organic matter two-stage drying and gasification integrated method using the above-mentioned device includes a two-stage drying process of organic matter, an organic matter gasification process and a heat recovery process. the

在所述的有机物的两级干燥过程中，一级利用有机物气化过程中产生的高温可燃气作为干燥介质对有机物进行干燥，另外一级以饱和水蒸汽作为干燥介质对有机物进行干燥。在一级有机物干燥中，对含水率为80％以上有机物进行 干燥，使其含水率降至60-65％，经干燥后所产生的有机物进入另外一级有机物干燥过程。经干燥后，有机物的含水率60-65％降至20-25％，然后作为固体燃料进入气化装置进行气化反应。 In the two-stage drying process of organic matter, one stage uses high-temperature combustible gas generated during the gasification of organic matter as a drying medium to dry the organic matter, and the other stage uses saturated water vapor as a drying medium to dry the organic matter. In the first-stage organic matter drying, the organic matter with a moisture content of more than 80% is dried to reduce the moisture content to 60-65%, and the organic matter produced after drying enters another stage of organic matter drying process. After drying, the moisture content of the organic matter is reduced to 20-25% from 60-65%, and then enters the gasification device as solid fuel for gasification reaction. the

在有机物气化过程中，以经过两级干燥过程后最终产生的有机物作为气化反应燃料，气化装置类型为流化床、沸腾床、循环流化床及固定床均可。有机物气化产生的600-800℃的高温可燃气体经高温旋风分离器后，气体中所含有的焦油成分在二级干燥过程中被吸收90％以上。气化装置产生的灰渣用于制砖，气化产生的可燃气体经旋风除尘器后进入多层有机物干燥设备，旋风除尘器分离出来的灰渣也用于制砖。 In the gasification process of organic matter, the organic matter finally produced after the two-stage drying process is used as the gasification reaction fuel, and the gasification device type can be fluidized bed, ebullating bed, circulating fluidized bed or fixed bed. After the 600-800°C high-temperature combustible gas produced by the gasification of organic matter passes through the high-temperature cyclone separator, the tar component contained in the gas is absorbed by more than 90% in the secondary drying process. The ash produced by the gasification device is used to make bricks, and the combustible gas produced by the gasification enters the multi-layer organic matter drying equipment after the cyclone dust collector, and the ash separated by the cyclone dust collector is also used to make bricks. the

在所述的热量回收过程中，一级有机物的干燥过程用于回收气化产生的高温可燃气的显热，燃气锅炉以这些可燃气体为燃料生产饱和水蒸汽作为干燥介质，用于对有机物的干燥；一个高压鼓风机用于产生高压冷空气，高压冷空气通过空气预热装置回收燃气锅炉燃烧产生的烟气余热，从而实现对空气的预热。预热后的热空气用于气化装置的空气供给和燃气锅炉的空气供给。部分剩余的可燃气体用于发电。 In the heat recovery process, the drying process of primary organic matter is used to recover the sensible heat of high-temperature combustible gas produced by gasification, and the gas-fired boiler uses these combustible gases as fuel to produce saturated water vapor as a drying medium for the drying of organic matter. Drying; a high-pressure blower is used to generate high-pressure cold air, and the high-pressure cold air passes through the air preheating device to recover the waste heat of the flue gas generated by the combustion of the gas boiler, so as to realize the preheating of the air. The preheated hot air is used for the air supply of the gasification device and the air supply of the gas boiler. Part of the remaining combustible gas is used to generate electricity. the

本发明的优选技术方案是：所述的一级有机物干燥过程中，进口有机物含水率为80-85％，出口有机物含水率为60-65％；在另外一级干燥过程中，进口有机物含水率为60-65％，出口有机物含水率为20-25％；气化装置气化温度为600-800℃，气化装置进料有机物含水率为20-30％；燃气锅炉烟气预热回收过程中对空气的预热温度为150-200℃。 The preferred technical solution of the present invention is: in the first-stage drying process of organic matter, the moisture content of the imported organic matter is 80-85%, and the moisture content of the outlet organic matter is 60-65%; in the other stage of drying process, the moisture content of the imported organic matter is 60-65%, the moisture content of the organic matter at the outlet is 20-25%; the gasification temperature of the gasification device is 600-800°C, and the moisture content of the organic matter in the gasification device is 20-30%; the gas boiler flue gas preheating recovery process The preheating temperature of the air in the medium is 150-200°C. the

本发明具有以下明显的优点及突出效果：(1)将有机物的两级干燥与有机物气化过程相结合，可充分利用有机物中蕴含的热值，实现外来能源的零供给，甚至可以对外提供能源。(2)利用两级干燥工艺，可以充分吸收气化过程和燃 气锅炉燃烧过程产生的显热，可以直接利用气化产气中的可燃组分的热值生产水蒸汽。能量得到充分利用和节约，将有机物从固体废物转化为燃料，提升了有机物品位。(3)节约能源，整个系统不需要其他外来能源，系统可以向外输出能源。(4)有效解决了气化燃气的净化问题。本发明所述的两级有机物干燥过程中的多层有机物干燥，可以大幅降低气化燃气中所含的焦油成分，成为有机物气化产气中焦油含量高，难以解决的有效方法，而且工艺简单，焦油去除率高。 The present invention has the following obvious advantages and outstanding effects: (1) Combining the two-stage drying of organic matter with the gasification process of organic matter can make full use of the heat value contained in the organic matter, realize zero supply of external energy, and even provide energy externally . (2) Using the two-stage drying process, it can fully absorb the sensible heat generated by the gasification process and the combustion process of the gas boiler, and can directly use the calorific value of the combustible components in the gasification gas to produce water vapor. Energy is fully utilized and saved, organic matter is converted from solid waste into fuel, and the grade of organic matter is improved. (3) Energy saving, the whole system does not need other external energy sources, and the system can output energy externally. (4) The purification problem of gasification gas is effectively solved. The multi-layer organic matter drying in the two-stage organic matter drying process of the present invention can greatly reduce the tar component contained in the gasification gas, and becomes an effective method that is difficult to solve due to the high tar content in the gasification gas of organic matter, and the process is simple , High tar removal rate. the

附图说明Description of drawings

图1是本发明处理装置的结构方框图。 Fig. 1 is a block diagram showing the structure of the processing device of the present invention. the

图2是本发明处理装置的基本系统布置方框图。 Fig. 2 is a block diagram showing the basic system arrangement of the processing apparatus of the present invention. the

具体实施方式Detailed ways

下面结合附图对本发明的技术方案做进一步的说明： Below in conjunction with accompanying drawing, technical scheme of the present invention is described further:

图1所示是根据本发明用于实施有机物两级干燥与气化一体化方法的处理装置的基本系统布置。如图1所示，含水率为80％或更高的高湿有机物如污水处理厂产生的污泥被送入一级干燥装置中进行干燥，干燥介质为饱和水蒸汽，经干燥后，有机物的含水率降为60-65％，然后这些有机物送入二级干燥装置中进行干燥，干燥介质为气化装置产生的高温可燃气，经干燥后形成最终的干燥有机物，其含水率为20-25％；以这种最终处理的有机物为固体燃料，在气化装置里进行气化反应，气化产生的高温可燃气体进入高温旋风分离系统进行气固分离。分离后的高温可燃气体作为干燥介质进入二级有机物干燥装置用于对有机物的二级干燥。在此过程中，可燃气体中的焦油成分被有机物吸收大部。随后可燃气体进入净化装置，对可燃气体进行净化处理；净化后的可燃气体进入储气装置进行存储。从储气装置排出的可燃气体作为燃料进入燃气锅炉，燃气 锅炉的空气供给为热空气；燃气锅炉产生饱和水蒸汽，饱和水蒸汽作为干燥介质进入一级干燥装置中对含水率为80％或更高的高湿有机物进行干燥，燃气锅炉燃烧后产生的烟气进入空气预热装置，经高压鼓风机产生的高压冷空气进入空气预热气与烟气进行换热形成热空气，这些热空气一部分进入有机物气化装置为气化过程提供热空气，另外一部分进入燃气锅炉，为燃气锅炉的燃烧提供热空气。 Figure 1 shows the basic system arrangement of a treatment device for implementing an integrated method of two-stage drying and gasification of organic matter according to the present invention. As shown in Figure 1, high-humidity organic matter with a moisture content of 80% or higher, such as sludge produced by a sewage treatment plant, is sent to a primary drying device for drying. The drying medium is saturated water vapor. After drying, the organic matter The moisture content is reduced to 60-65%, and then these organic substances are sent to the secondary drying device for drying. The drying medium is the high-temperature combustible gas produced by the gasification device. After drying, the final dry organic substances are formed, and the moisture content is 20-25%. %; The final treated organic matter is used as solid fuel, and the gasification reaction is carried out in the gasification device, and the high-temperature combustible gas produced by gasification enters the high-temperature cyclone separation system for gas-solid separation. The separated high-temperature combustible gas enters the secondary organic matter drying device as a drying medium for secondary drying of organic matter. During this process, most of the tar components in the combustible gas are absorbed by organic matter. Then the combustible gas enters the purification device to purify the combustible gas; the purified combustible gas enters the gas storage device for storage. The combustible gas discharged from the gas storage device enters the gas-fired boiler as fuel, and the air supply of the gas-fired boiler is hot air; the gas-fired boiler produces saturated water vapor, which enters the first-level drying device as a drying medium for moisture content of 80% or more The high-humidity organic matter is dried, the flue gas produced by the combustion of the gas boiler enters the air preheating device, and the high-pressure cold air generated by the high-pressure blower enters the air preheating gas and flue gas to exchange heat to form hot air, and part of the hot air enters The organic matter gasification device provides hot air for the gasification process, and the other part enters the gas boiler to provide hot air for the combustion of the gas boiler. the

图2所示是根据本发明用于实施有机物两级干燥与气化一体化方法的处理装置的基本系统布置。如图2所示，含水率为80％或更高的高湿有机物如污水处理厂产生的污泥被送入一级干燥装置中进行干燥，干燥介质为气化装置产生的高温可燃气，经干燥后，有机物的含水率降为60-65％，然后这些有机物送入二级干燥装置中进行干燥，干燥介质为饱和水蒸汽，经干燥后形成最终的干燥有机物，其含水率为20-25％；以这种最终处理的有机物为固体燃料，在气化装置里进行气化反应，气化产生的高温可燃气体进入高温旋风分离系统进行气固分离。分离后的高温可燃气体作为干燥介质进入一级有机物干燥装置用于对有机物进行一级干燥。在此过程中，可燃气体中的焦油成分被有机物吸收大部。随后可燃气体进入净化装置，对可燃气体进行净化处理；净化后的可燃气体进入储气装置进行存储。从储气装置排出的可燃气体作为燃料进入燃气锅炉，燃气锅炉的空气供给为热空气；燃气锅炉产生饱和水蒸汽，饱和水蒸汽作为干燥介质进入二级干燥装置中对含水率为80％或更高的高湿有机物进行干燥，燃气锅炉燃烧后产生的烟气进入空气预热装置，经高压鼓风机产生的高压冷空气进入空气预热气与烟气进行换热形成热空气，这些热空气一部分进入有机物气化装置为气化过程提供热空气，另外一部分进入燃气锅炉，为燃气锅炉的燃烧提供热空气。 Fig. 2 shows the basic system arrangement of a treatment device for implementing the integrated method of two-stage drying and gasification of organic matter according to the present invention. As shown in Figure 2, high-humidity organic matter with a moisture content of 80% or higher, such as sludge produced by a sewage treatment plant, is sent to the primary drying device for drying. The drying medium is the high-temperature combustible gas produced by the gasification device. After drying, the moisture content of the organic matter is reduced to 60-65%, and then these organic matter are sent to the secondary drying device for drying. The drying medium is saturated water vapor, and the final dry organic matter is formed after drying, and its moisture content is 20-25%. %; The final treated organic matter is used as solid fuel, and the gasification reaction is carried out in the gasification device, and the high-temperature combustible gas produced by gasification enters the high-temperature cyclone separation system for gas-solid separation. The separated high-temperature combustible gas enters the primary organic matter drying device as a drying medium for primary drying of organic matter. During this process, most of the tar components in the combustible gas are absorbed by organic matter. Then the combustible gas enters the purification device to purify the combustible gas; the purified combustible gas enters the gas storage device for storage. The combustible gas discharged from the gas storage device enters the gas boiler as fuel, and the air supply of the gas boiler is hot air; the gas boiler produces saturated water vapor, and the saturated water vapor enters the secondary drying device as a drying medium for moisture content of 80% or more The high-humidity organic matter is dried, the flue gas produced by the combustion of the gas boiler enters the air preheating device, and the high-pressure cold air generated by the high-pressure blower enters the air preheating gas and flue gas to exchange heat to form hot air, and part of the hot air enters The organic matter gasification device provides hot air for the gasification process, and the other part enters the gas boiler to provide hot air for the combustion of the gas boiler. the

Claims (4)

1. the dry and incorporate device of gasification of organic matter two-stage is characterized in that this integrated apparatus comprises gasification installation, two-stage drying device, gas cleaning device, caisson, gas fired-boiler and air preheater; Gasification installation epimere gas outlet is connected with the secondary drying device portal through the high temperature cyclone separator; The material outlet of secondary drying device is connected with the material inlet of gasification installation; The purifier inlet duct is connected with the fuel gas outlet of secondary drying device; The purifier outlet conduit is connected with the caisson inlet pipeline; The caisson outlet conduit is connected with the gas fired-boiler fuel gas transportation pipeline; The flue gas that gas fired-boiler burning back produces gets into air preheater, and high pressure blower is connected with gas fired-boiler air intake pipeline with gasification installation air intake pipeline behind air preheater; Gas fired-boiler water vapour pipeline is connected with the one-level drying device; The organic matter port of export of one-level drying device is connected with the material inlet end of secondary drying device.

2. use the dry and gasification integral method of organic matter two-stage of the said device of claim 1, comprise organic two-stage dry run, organic matter gasification and heat recovering process; It is characterized in that following steps,

Moisture content be 80% or higher high humidity organic matter be admitted to and carry out drying in the one-level drying device; Drying medium is a saturated vapor, and after drying, organic moisture content is reduced to 60-65%; These organic matters are sent into and are carried out drying in the secondary drying device then; Drying medium is the high-temperature combustible gas body that gasification installation produces, and after dry, forms final dry organic matter, and its moisture content is 20-25%; Organic matter with this final processing is a solid fuel, in gasification installation, carries out gasification reaction, and the high-temperature combustible gas body that gasification produces gets into the high temperature cyclone separator and carries out gas solid separation; High-temperature combustible gas body after the separation gets into the secondary drying device as drying medium and is used for organic secondary drying; In this process, the tar ingredients in the fuel gas is absorbed big portion by organic matter; Fuel gas gets into purifier subsequently, and fuel gas is carried out purified treatment; Fuel gas after the purification gets into caisson and stores; The fuel gas of discharging from the caisson entering gas fired-boiler that acts as a fuel, the air of gas fired-boiler is supplied with and is hot-air; Gas fired-boiler produces saturated vapor; Saturated vapor as drying medium get in the one-level drying device to moisture content be 80% or higher high humidity organic matter carry out drying; The flue gas that gas fired-boiler burning back produces gets into air preheater; The cold, high pressure air entering air preheater and the flue gas that produce through high pressure blower carry out heat exchange formation hot-air; It is that gasification provides hot-air that these hot-airs part gets into gasification installations, and a part gets into gas fired-boiler in addition, for the burning of gas fired-boiler provides hot-air.

3. the dry and incorporate device of gasification of organic matter two-stage is characterized in that this integrated apparatus comprises gasification installation, two-stage drying device, purifier, caisson, gas fired-boiler and air preheater; Gasification installation epimere gas outlet is connected with one-level drying device inlet through the high temperature cyclone separator; The material outlet of secondary drying device is connected with the material inlet of gasification installation; The purifier inlet duct is connected with the fuel gas outlet of one-level drying device; The purifier outlet conduit is connected with the caisson inlet pipeline; The caisson outlet conduit is connected with the gas fired-boiler fuel gas transportation pipeline; The flue gas that gas fired-boiler burning back produces gets into air preheater, and high pressure blower is connected with gas fired-boiler air intake pipeline with gasification installation air intake pipeline behind air preheater; Gas fired-boiler water vapour pipeline is connected with the secondary drying device; The organic matter port of export of one-level drying device is connected with the material inlet end of secondary drying device.

4. use the dry and gasification integral method of organic matter two-stage of the said device of claim 3, comprise organic two-stage dry run, organic matter gasification and heat recovering process; It is characterized in that following steps,

Moisture content be 80% or higher high humidity organic matter be admitted to and carry out drying in the one-level drying device; Drying medium is the high-temperature combustible gas body that gasification installation produces, and after drying, organic moisture content is reduced to 60-65%; These organic matters are sent into and are carried out drying in the secondary drying device then; Drying medium is a saturated vapor, after dry, forms final dry organic matter, and its moisture content is 20-25%; Organic matter with this final processing does

Solid fuel carries out gasification reaction in gasification installation, the high-temperature combustible gas body that gasification produces gets into the high temperature cyclone separator and carries out gas solid separation; High-temperature combustible gas body after the separation gets into the one-level drying device as drying medium and is used for organic matter is carried out the one-level drying; In this process, the tar ingredients in the fuel gas is absorbed big portion by organic matter; Fuel gas gets into purifier subsequently, and fuel gas is carried out purified treatment; Fuel gas after the purification gets into caisson and stores; The fuel gas of discharging from the caisson entering gas fired-boiler that acts as a fuel, the air of gas fired-boiler is supplied with and is hot-air; Gas fired-boiler produces saturated vapor; It is that the organic matter of 60-65% carries out drying that saturated vapor gets in the secondary drying device moisture content as drying medium; The flue gas that gas fired-boiler burning back produces gets into air preheater; The cold, high pressure air entering air preheater and the flue gas that produce through high pressure blower carry out heat exchange formation hot-air; It is that gasification provides hot-air that these hot-airs part gets into gasification installations, and a part gets into gas fired-boiler in addition, for the burning of gas fired-boiler provides hot-air.

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