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Coal pyrolysis gasification polygeneration device and process based on circulating fluidized bed

A circulating fluidized bed and polygeneration technology, which is used in the combined production of tar, coal gas and activated coke, in the fields of electricity and heat, can solve the problem of high dust content in pyrolysis gas, difficult utilization of dusty tar, and difficulty in purification and treatment. and other problems, to achieve the effect of realizing economic benefits, avoiding the secondary separation process, and outstanding purification effect

Inactive Publication Date: 2015-11-18
SHANXI LUAN MINING GRP +1
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Problems solved by technology

However, in the actual process, due to the small particle size of the circulating ash, there are problems such as high dust content in the pyrolysis gas, which is easy to cause pipeline blockage and difficult to use dusty tar, and purification treatment is difficult, which has always been an urgent problem in the industry.

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  • Coal pyrolysis gasification polygeneration device and process based on circulating fluidized bed

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Embodiment Construction

[0030] The present invention organically couples the circulating fluidized bed boiler, the moving bed pyrolysis reactor and the moving bed gasifier. As a purification device for pyrolysis gas, bed gasifier plays the role of online dust removal for pyrolysis gas. The gasified active coke is discharged from the reaction system as a by-product. In this way, through the organic combination of the three stages of pyrolysis-gasification-combustion, the hierarchical and optimal utilization of coal resources can be realized, and the joint production of heat, electricity, tar, gas, and active coke can be carried out, and at the same time, the problems of gasification gas, heat To solve the purpose of efficient purification of gas.

[0031] Below in conjunction with accompanying drawing and specific embodiment the present invention will be further described:

[0032] A coal pyrolysis gasification polygeneration device based on a circulating fluidized bed, comprising a circulating flui...

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Abstract

The invention discloses a coal pyrolysis gasification poly-generation device and process based on a circulating fluidized bed. A circulating fluidized bed boiler is organically coupled with a moving bed coal pyrolysis reactor and a moving bed gasification furnace, the high temperature circulation ash of the circulating fluidized bed boiler is used as a carrier for pyrolyzing high volatile coal steam coal from a coal funnel in the moving bed coal pyrolysis reactor, the semicoke generated in pyrolysis is separated out from the pyrolysis reactor and is fed into the moving bed gasification furnace for gasification, and at the same time the moving bed gasification furnace is used as a device for purifying a pyrolysis coal gas, thereby achieving the function of on-line dust collection of the pyrolysis coal gas. The gasified activated coke as a byproduct is discharged outside the reaction system. Therefore, through organic combination of three procedures, including pyrolysis, gasification and combustion, graded optimized utilization of the coal resource is achieved, joint production of heat, electricity, tar, coal gas and activated coke is achieved, and meanwhile the purposes of gasifying the coal gas and efficiently purifying the pyrolysis coal gas are achieved.

Description

technical field [0001] The invention relates to a pyrolysis, gasification and combustion combined coal graded utilization device and process, in particular to a device and process capable of realizing combined production of heat, electricity, tar, coal gas and active coke. Background technique [0002] my country is rich in coal resources. In 2012, my country's coal output reached 3.6 billion tons, of which about 80% was used for direct combustion. Direct combustion of coal has problems such as low combustion efficiency and serious pollution. Therefore, it is imminent to develop new technologies for efficient comprehensive utilization of coal and low pollution emissions. Starting from the reactivity of coal, multiple production processes using coal as raw materials are organically coupled to achieve graded transformation and utilization, which can better solve resource and environmental problems. [0003] Based on circulating fluidized bed combustion, the high-temperature c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10J3/66C10J3/84C10J3/62F23C10/22
Inventor 梁鹏王志杰王东飞裴建勋王伟林武加峰
Owner SHANXI LUAN MINING GRP
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