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High-efficiency and clean coal gasification process

A coal gasification and clean technology, applied in the field of coal chemical industry

Active Publication Date: 2013-01-30
邰学林
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process not only recovers valuable coal tar and chemicals from coal, but also solves the environmental protection problem of waste water containing phenols and other organic substances produced in the purification process of coal gas or coke oven gas produced by low-temperature coal gasification, and at the same time reduces energy consumption. , Improve the quality and production capacity of gas

Method used

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  • High-efficiency and clean coal gasification process

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Experimental program
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Embodiment Construction

[0006] The pretreated raw coal enters the low-temperature gasification furnace or coking furnace 1 from the coal conveyor 2, and the gasification agent containing oxygen is sent to the low-temperature gasification furnace 1 through the gasification agent nozzle 3 for low-temperature gasification or combustion gas passes through the gas nozzle 3 Enter the coking furnace 1 for internal combustion and heating for coking. The crude gas or coke oven gas produced passes through the coal tar and chemical recovery device 4. After recovering coal tar and chemicals, it enters the gas and coal powder mixing conveying device 5. After the crude gas or coke A certain amount of pulverized coal or other carbon-containing substances are added to the furnace gas and enter the high-temperature entrained-bed gasification furnace 8, and the high-temperature gasification reaction is carried out together with the oxygen or the gasification agent containing oxygen added through the gasification agent n...

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Abstract

The invention discloses a high-efficiency and clean coal gasification process, and belongs to the field of coal chemical industry. By the high-efficiency and clean gasification process, precious resources such as coal tar and chemicals in coal are recycled in a low temperature coal gasification system or a coke oven gas chemical engineering device of which the gasification temperature is below 1,300 DEG C by using a high temperature entrained bed gasification technology; and environmental problem that phenol-containing wastewater which is difficult to dispose is generated in the process of purification of gas or coke oven gas because the gas generated by low temperature gas gasification and coal coking contains organic matters such as tar; the production capability of the device is improved; and the energy consumption is reduced. The high-efficiency and clean coal gasification process can be applied in various coal gasification processes and technical transformation of environmental protection, energy conservation and production increase of low temperature coal gasification device such as a smashed coal or lump coal moving bed gasification furnace and the coke oven gas chemical engineering device.

Description

technical field [0001] The invention relates to the field of coal chemical industry. Background technique [0002] In the field of coal chemical industry, Lurgi furnace gasification, coking, circulating fluidized bed coal gasification and other low-temperature coal gasification systems with a gasification temperature lower than 1300 °C at home and abroad have high requirements for raw materials due to low gasification temperature. Low conversion efficiency, poor quality of gas produced, high carbon dioxide, tar, phenols and other organic substances in the gas, a large amount of waste water containing phenols and other organic substances is produced during the gas purification process, and the treatment is very difficult. At present, there is almost no It is an economical and effective method to treat phenol-containing wastewater produced by low-temperature coal gasification. The environmental protection problems caused by low-temperature gasification have become one of the i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/46C10J3/60C10J3/00C10J3/84C10J3/62C10J3/66
CPCY02P20/10
Inventor 邰学林
Owner 邰学林
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