Oven gas generation of plasma gasified coke oven

A technology of plasma and arc plasma, which is applied in the fields of coking oven, chemical modification of combustible gas, purification/transformation of combustible gas, etc. It can solve the problems of easy carbon deposition and poisoning of catalysts

Inactive Publication Date: 2005-07-27
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the method for plasma gasifying coke oven raw gas of the present invention is to overcome the deficiencies of the prior art, improve the energy utilization efficiency of coke oven gas, and solve the problem that the existing coal-to-synthesis gas technology needs high pressure, catalyst and the catalyst is prone to carbon deposition and poisoning And other issues

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0015] Send compressed air and cooling water to the plasma generator, start the plasma generator to ignite the arc, and the raw coal gas enters the plasma gasification reactor from the carbonization chamber through the rising pipe, bridge pipe, and gas collection pipe (pipelines are covered with insulation materials), and the raw coal gas The hydrocarbons in the gas, the coal dust and water vapor entering the riser during the coal charging process are activated by contact with the air plasma, and the rapid reaction generates CO and H 2 , and a small amount of N 2 , CO 2 mixture of gases. The temperature of the mixed gas is 1500°C, and then enters the waste heat boiler to recover heat, and the high-pressure steam generated is partly supplied to the power system of the factory, and part of it can also enter the plasma gasification system as a gasification agent.

Embodiment approach 2

[0017] Raw coal gas enters the plasma gasification reactor through a series of pipelines along the tangent of the reactor, and at the same time, high-pressure steam (produced by the waste heat boiler) is introduced along the tangential direction of the reactor, and then the plasma arc is ignited, and an electromagnetic coil is placed outside the plasma gasification reactor , to compress and control the plasma arc, so that the plasma arc rotates in the same direction as the airflow at a certain frequency. It strengthens the interaction between plasma and reactants, accelerates the reaction rate, and generates high-quality synthesis gas. Syngas at 2500°C enters the waste heat boiler to generate high-pressure steam, which is supplied to the power system of the plant. Part of it can also enter the plasma gasification system and be used as a gasification agent.

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PUM

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Abstract

This invention relates to a plasma tails treatment. Hot tails that contains steam and tar vapor from cokery is directly fed into a plasma gasifier to produce synthetic gas, reduced gas and fuel gas. Its procedure is short and easy to operate, has high heat efficiency and little pollution, and needs no catalyst, so as to eliminate toxic operation caused by catalyst decomposition.

Description

technical field [0001] The method for the plasma gasification of coke oven raw gas in the present invention relates to a kind of coking raw gas that is assisted by plasma to produce H 2 , CO-based synthesis gas, reducing gas, and gas methods, which belong to the category of coal chemical industry and plasma chemical industry. technical background [0002] The conventional method to deal with raw coke oven gas is: 650℃~850℃ raw coal gas is sprayed with ammonia water in the bridge pipe and gas collecting pipe to cool down to 80℃~85℃, and then cooled to 25℃~35℃ in the initial gas cooling section. A large amount of sensible heat of raw gas and a large amount of latent heat of water vapor and tar vapor are wasted. At the same time, a large amount of cooling water and ammonia are consumed. After benzene washing, desulfurization and other processes, the purified gas obtained can be used as raw material to produce synthesis gas. In each section, coking wastewater is produced, in a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/02C10B57/18C10K3/00
CPCY02P20/10
Inventor 申曙光鲍卫仁吕永康曹青叶峻岭赵彦生谢克昌
Owner TAIYUAN UNIV OF TECH
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