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Gangue pyrolysis gasification raw gas purification combustion recycle method

A pyrolysis gasification, combustion cycle technology, applied in the petroleum industry, the manufacture of combustible gas, the heating of coke ovens, etc.

Active Publication Date: 2013-09-04
SHANXI XINLI ENERGY TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Coal gangue - the stone selected from raw coal is the waste residue of coal preparation plants, which is not easy to deal with. In China, hundreds of millions of tons of coal gangue cannot be used every year, and it still continues to discharge about 100Mt every year. It not only accumulates and occupies land, but also It can spontaneously combust to pollute the air or cause a fire, causing serious environmental pollution

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  • Gangue pyrolysis gasification raw gas purification combustion recycle method
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  • Gangue pyrolysis gasification raw gas purification combustion recycle method

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Embodiment Construction

[0038] The specific embodiment of the comprehensive utilization of coal gangue pyrolysis gasification of the present invention is mainly introduced in detail below.

[0039] Part 1 Particle Size Control of Coal Gangue

[0040] The coal gangue is processed and crushed into a particle size of 0-20 mm, and the crushed coal gangue is dehydrated and dried within this particle size range, and the drying is sufficient and the dehydration efficiency is high, but this does not constitute a limitation on the coal gangue required by the present invention.

[0041] The second part of coal gangue humidity control dehydration

[0042] The waste coal gasification produced by coal gangue high temperature pyrolysis and water gas reaction is recovered and purified, and the hot waste gas generated after combustion of clean coal gas is used for humidity control and dehydration of crushed coal gangue pellets before being put into the furnace.

[0043] In order to keep the environment clean and ti...

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Abstract

The invention discloses a gangue pyrolysis gasification raw gas purification combustion recycle method. The method comprises the following steps of 1, through purified-gas thermal-storage heat-exchange alternant combustion carried out by an external gas heating device and an internal gas heating device of a gangue pyrolysis device, providing a heat source to gangue pyrolysis in a pyrolysis gasification chamber in a high temperature environment, 2, through a water gas reaction device, feeding high temperature water vapor into the pyrolysis gasification chamber from the lower part so that the high temperature water vapor contacts with the high-temperature gangue pyrolysis products in the pyrolysis gasification chamber and undergoes a water gas reaction to produce water gas, 3, exporting the raw gas which comprises the gas produced by gangue pyrolysis and the water gas produced by the water gas reaction, 4, feeding the raw gas into an active parching recoverer, carrying out active coke adsorption, and transporting the adsorbed clean gas into the external gas heating device and the internal gas heating device for combustion by clean gas output pipes. Through utilization of combustion of carbon, oil and gas in gangue, a cost is reduced.

Description

technical field [0001] The invention relates to coal gangue pyrolysis gasification technology, in particular to a coal gangue pyrolysis gasification raw coal gas purification combustion recycling method. Background technique [0002] Coal gangue - the stone selected from raw coal is the waste residue of coal preparation plants, which is not easy to deal with. In China, hundreds of millions of tons of coal gangue cannot be used every year, and it still continues to discharge about 100Mt every year. It not only accumulates and occupies land, but also It can spontaneously combust and pollute the air or cause a fire, causing serious environmental pollution. [0003] Due to coalification for hundreds of millions of years, coal gangue contains 20-30% of carbon, oil, and gas substances, of which oil and gas account for 11-15%, and carbon accounts for 7-15%. Pyrolysis and gasification of coal gangue to obtain oil and gas products and 70-80% solid products (components are silicon di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/60C10J3/66C10J3/20C10J3/84C10J3/80C10B21/10C10B21/12
Inventor 王新民
Owner SHANXI XINLI ENERGY TECH
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