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Coal gasification cooling technique and device

A coal gasification and cooling device technology, applied in combustible gas purification, combustible gas purification/transformation, petroleum industry, etc., can solve the problems of dust, phenolic water difficult to handle, large energy consumption, serious environmental pollution, etc., to prevent gas Deflagration hazard, low operating cost, and the effect of purifying living space

Inactive Publication Date: 2008-08-06
SHANDONG SANXING MACHINERY MFG
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Problems solved by technology

After the two-stage gasifier is applied to the field of coal gasification, the coal gasification cooling process method and device usually include a two-stage gasifier, cyclone dust collector, electric tar collector, electric light oil collector, air cooler, Indirect cooler, the defects and deficiencies of this kind of treatment are serious environmental pollution, high energy consumption, difficult to deal with dust and phenolic water, which brings great pressure to the environment

Method used

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  • Coal gasification cooling technique and device

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Embodiment Construction

[0030] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0031] The two-stage coal gasifier gas production belongs to the air blast continuous gas production method. The water jacket of the furnace body and the waste heat exchanger self-produced low-pressure steam and the saturated gas mixed with the blast air are used as the gasification agent, and the saturation temperature is generally controlled. Between 55°C and 65°C. Through the dry check valve, the air duct at the bottom of the gas furnace passes through the grate and enters the gasifier. In the gasification section, it reacts with the hot semi-coke formed by the reversely added raw coal to generate hot gas, of which nearly 75 % of the hot gas is exported through the central steel pipe and the channel in the annular furnace wall to form the bottom gas, and the remaining 25% of the hot gas directly heats, dries, and drys the bituminous coal in the retort section, and...

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Abstract

The invention belongs to the coal gasification field, which particularly relates to a coal gasification cooling technique method and a device. The technical proposal comprises a two-segment gas producer, a cyclone dust extractor, an electro tar precipitator, an electro tar light oil device, an ail cooling device, an indirect gas cooler and a waste heat exchanger, which can improve gas quality, water content of coal gas can be lowered to 40g / Nm3, and the sum of the contents of dust and coke tar in coal gas (anthracite coal / coke to be raw material) is no more than 50mg / Nm3. The coal gasification cooling technique method and the device save energy resource, lower consumption, and reduce the pollution of dust and phenol water to environment.

Description

technical field [0001] The invention belongs to the field of coal gasification, and specifically relates to a coal gasification cooling process method and a device. Background technique [0002] At present, the normal pressure moving bed or fixed bed gasification technology is mostly used in the production of industrial gas in my country, but there are strict requirements on the particle size and properties of coal, the production capacity of a single furnace is low, and the gas contains a large amount of N 2 , resulting in low calorific value of gas, and a large amount of tar and phenol water associated with gas production, which brings great difficulties to gas purification and environmental protection. The two-stage coal gasifier gas production belongs to the air blast continuous gas production method. The water jacket of the furnace body and the waste heat exchanger self-produced low-pressure steam and the saturated gas mixed with the blast air are used as the gasificati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10K1/00
CPCY02P20/129
Inventor 王明亮成文明韩文来张树虎
Owner SHANDONG SANXING MACHINERY MFG
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