Comprehensive and recycling utilization method of coal pyrolysis gases

A coal pyrolysis and gas technology, applied in combustion methods, combustible gas purification, gas fuel burners, etc., can solve problems such as low production efficiency, inability to carry out continuous production, no waste gas export, recovery, purification and utilization, etc.

Active Publication Date: 2012-12-12
SHANXI XINLI ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Most coal pyrolysis furnaces (coke ovens) currently on the market adopt batch-type coking. Coke upgrading, dry quenching and other process steps are relatively independent, continuous production cannot be carried out, and production efficiency is low; in addition, the raw coal gas generated during coal pyrolysis contains many useful components, such as H2S , HCH and other acid gases, NH3 basic gas, tar, benzene, naphthalene, washing oil and other organic substances, there is no complete process for exporting, recycling and purifying raw gas

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  • Comprehensive and recycling utilization method of coal pyrolysis gases
  • Comprehensive and recycling utilization method of coal pyrolysis gases
  • Comprehensive and recycling utilization method of coal pyrolysis gases

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Embodiment Construction

[0087] A specific embodiment of a method for comprehensive recycling of coal pyrolysis gas in the present invention is mainly introduced in detail below.

[0088] Part 1 Furnace Coal Proportion and Preparation

[0089] The coal pyrolysis furnace involved in the present invention can obtain cokes of different grades according to different proportions of coals fed into the furnace.

[0090]The steps are as follows: 1) 5 kinds of different coals are selected, which are respectively gas coal, fat coal, coking coal, one-third coking coal and lean coal. 2) Gas coal 20%~40%; fat coal 10%~20%; coking coal 10%~20%; one-third coking coal 15%~30%; lean coal 10%~15%, first mix and then sieve Broken until the broken particles reach below 5mm to form coal into the furnace. Of course, the coal pyrolysis furnace of the present invention is equally applicable to coal into the furnace with other proportions and particle sizes, and does not constitute a restriction on the required coal powder f...

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Abstract

The invention discloses a comprehensive and recycling utilization method of coal pyrolysis gases. The method is achieved by the following steps that: (1) raw gases are derived, condensed, recovered, purified and burned; (2) the burned gases are subject to dry quenching to generate flammable high-temperature waste gases; (3) the flammable high-temperature waste gases generated by the dry-quenching waste gases are used for coking; (4) the flammable high-temperature waste gases generated by the dry-quenching waste gases are used for gas-supplemented combustion; (5) the hot waste gases after the gas-supplemented combustion are transferred into a furnace for preheating and dehydration; (6) the hot waste gases after the gas-supplemented combustion are transferred into a furnace for the preheating and regeneration of active coke. The method provided by the invention combines the derivation and purification of the raw gases with processes such as combustion, dry quenching, coking, preheating, dehydration, regeneration of active coke by clean gas after the purification and recovery, thus achieving an integrated process of derivation, recover and purification, and recycling of the raw gases and reducing the coking cost.

Description

technical field [0001] The invention relates to a gas utilization method, in particular to a comprehensive recycling method for coal pyrolysis gas. Background technique [0002] At present, most coal pyrolysis furnaces (coke ovens) on the market adopt batch-type coking, and the process steps such as the proportion of coal into the furnace, dehydration, coal feeding, preheating, carbonization, coke reforming, and CDQ are relatively independent and cannot be carried out. Continuous production, low production efficiency; In addition, the raw coal gas produced in the coal pyrolysis process contains many useful components, such as H 2 S, HCH and other acid gases, NH 3 Alkaline gas, tar, benzene, naphthalene, washing oil and other organic substances do not have a complete process for exporting, recovering and purifying raw gas. [0003] This impels the inventors to explore and innovate a complete set of continuous coking and a complete process for exporting, recovering and purif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10K1/12C10K1/06C10K1/04C10K1/32C10B27/00C10B27/06C10B57/00C10B57/10F23D14/00F23D14/66
CPCY02E20/34Y02P20/10Y02P20/129
Inventor 王新民
Owner SHANXI XINLI ENERGY TECH
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