Method for humidity adjustment by gangue pyrolysis gasification raw gas combustion hot-exhaust gas

A technology of pyrolysis gasification and combustion of waste gas, which is applied in the petroleum industry, chemical industry, and the manufacture of combustible gas, etc., and can solve problems such as environmental pollution, accumulation of land, and difficult disposal

Active Publication Date: 2013-09-04
SHANXI XINLI ENERGY TECH
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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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  • Method for humidity adjustment by gangue pyrolysis gasification raw gas combustion hot-exhaust gas
  • Method for humidity adjustment by gangue pyrolysis gasification raw gas combustion hot-exhaust gas
  • Method for humidity adjustment by gangue pyrolysis gasification raw gas combustion hot-exhaust gas

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Embodiment Construction

[0049] The specific embodiment of the comprehensive utilization of coal gangue pyrolysis gasification of the present invention is mainly introduced in detail below.

[0050] Part 1 Particle Size Control of Coal Gangue

[0051] 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.

[0052] Part II Humidity Control and Dehydration of Coal Gangue

[0053] Such as figure 1 , figure 2 Shown: the humidity control and dehydration device 1 for hot waste gas entering the furnace coal gangue, including a housing 11, a water vapor exhaust exporter 12, a waste gas heat exchange dehydrator 13, and a feeding bin 14; Coal gangue granules are silos 111 for humidity control and drying. The relatively closed top of the silo 1...

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Abstract

The invention discloses a method for damping by gangue pyrolysis gasification raw gas combustion hot-exhaust gas. The method comprises the following steps of 1, through thermal-storage heat-exchange alternate combustion of purified gas, providing a heat source to gangue pyrolysis gasification, 2, producing water gas by a water gas reaction of carbon in solid products produced by gangue pyrolysis and the overheated water vapor, 3, exporting raw gas, and 4, purifying the exported raw gas, carrying out thermal-storage heat-exchange alternate combustion, and carrying out humidity-adjustment dehydration of gangue particles before being fed into the furnace by the hot-exhaust gas obtained by combustion. The method does not consume extra energy consumption, saves a cost, cools hot-exhaust gas, is conducive to discharge of low-temperature exhaust gas into the atmosphere and realizes ecological environment protection.

Description

technical field [0001] The invention relates to coal gangue pyrolysis gasification technology, in particular to a coal gangue pyrolysis gasification raw coal gas combustion heat waste gas humidity control 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 s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/60C10J3/66C10J3/84C10J3/80C10B21/10C10B57/10
CPCY02P20/10
Inventor 王新民
Owner SHANXI XINLI ENERGY TECH
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