Omnibearing coproduction system and method by utilizing coal grading

An all-round, multi-generation technology, applied in the field of coal chemical industry, can solve problems such as unsatisfactory high-temperature separation of oil and gas, low coal utilization rate, and poor adjustability of multi-generation

Active Publication Date: 2013-06-19
SHAANXI COAL & CHEM TECH INST
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Problems solved by technology

[0006] In order to solve the problems of low coal utilization rate, poor adjustability of single coal gasification or coal pyrolysis gas head polygeneration, weak applicability of coal types in specific pyrolysis sys

Method used

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  • Omnibearing coproduction system and method by utilizing coal grading
  • Omnibearing coproduction system and method by utilizing coal grading

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Embodiment Construction

[0026] The overall composition structure of the system of the present invention is as follows: figure 1 Shown:

[0027] Coal preparation system A uses raw coal 101 as raw material, and has two outlets of granular coal 179 and lump coal 180, the outlet of lump coal 180 is connected to the raw material inlet of lump coal pyrolysis system B, and the outlet of granular coal 179 is connected The raw material inlet of system C is connected.

[0028] The heat carrier of the lump coal pyrolysis system B is provided by the gasification gas 121 produced in the gasification system M. The lump coal pyrolysis system B is provided with a lump coal pyrolysis oil gas 107 outlet and a lump coke 112 outlet, and the lump coal pyrolysis oil gas 107 The outlet is connected to the heat carrier inlet of granular coal pyrolysis system C, and the lump coke 112 outlet of lump coal pyrolysis system B is divided into two routes, one is directly output as metallurgical coke 113, and the other is used as ...

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Abstract

The invention provides an omnibearing coproduction system and method by utilizing coal grading. A standby coal system is respectively connected with a lump coal pyrolysis system and a pea coal pyrolysis system; a gasification system uses air as an input, semicoke generated by the pea coal pyrolysis system as a raw material, and generated gasified coal gas as a heat carrier of the lump coal pyrolysis system; lump coal pyrolysis oil gas generated by the lump coal pyrolysis system is used as a heat carrier of the pea coal pyrolysis system, part of generated lump coke is output as metallurgical coke, and the rest lump coke is used as a raw material for preparing carbide; pyrolysis coal gas generated by the pea coal pyrolysis system enters a crude gas treatment system, generated pyrolysis tar is used for hydrogenation grading, and generated semicoke is respectively used as semicoke for power generation and semicoke for gasification; and the crude gas treatment system uses pyrolysis coal gas generated by the pea coal pyrolysis system as a raw material, generated recovery waste heat is applied to a waste heat boiler of a power generation system, and generated carbon dioxide enters a carbon dioxide displaced coal gas system.

Description

technical field [0001] The invention relates to the technical field of coal chemical industry, in particular to the field of realizing polygeneration of oil, gas, chemical industry and electricity by using full particle size coal as raw material. Background technique [0002] China is the world's largest coal producer and consumer. From the perspective of my country's energy resources and economic development level, coal will still be the most important energy source in my country for a long time. Besides, there are a series of pollution problems. [0003] Compared with other coal combustion power generation, coal liquefaction, coal gasification and gasification downstream, the separation and clean conversion technology led by pyrolysis technology has obvious advantages in terms of investment intensity, technical economy, and energy conversion efficiency. , is the best way to comprehensively utilize coal. At present, the efficient and clean pyrolysis process of coal is divi...

Claims

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Application Information

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IPC IPC(8): C10B49/02C10B53/00C10B53/04C10B53/08C10J3/00C10K1/00C10C1/00
CPCY02P20/10Y02P20/129
Inventor 尚建选徐婕郑化安闵小建张生军李鑫侯文杰杨小彦张栋博赵奕程马勇贾培军
Owner SHAANXI COAL & CHEM TECH INST
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