System and technology for environmentally-friendly comprehensive treatment of iron making blast furnace gas

A blast furnace gas, comprehensive treatment technology, applied in blast furnace, blast furnace details, blast furnace parts and other directions, can solve the problems of failing to meet ultra-clean emission requirements, affecting the normal production of iron and steel enterprises, failing to meet national environmental protection requirements, etc.
CN110452744APending Publication Date: 2019-11-15LOFON CONTROL EQUIP BEIJING
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
LOFON CONTROL EQUIP BEIJING
Publication Date
2019-11-15

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Abstract

The invention provides a system and a technology for environmentally-friendly comprehensive treatment of iron making blast furnace gas. The system comprises a blast furnace top uniform pressure gas full-recovery system, a gravity deduster and a dry bag filter, and further comprises a blast furnace gas hydrolysis tower and a blast furnace gas desulfurization tower. The blast furnace gas goes through the gravity deduster and the dry bag filter, and then is conveyed into the blast furnace gas hydrolysis tower, COS in the blast furnace gas is hydrolyzed by the blast furnace gas hydrolysis tower toform H2S; the treated blast furnace gas goes through a TRT / or pressure regulating valve group, and then is conveyed into the blast furnace gas desulfurization tower, and the blast furnace gas desulfurization tower desulfurizes and dechlorinates H2S and Cl<-> in the blast furnace gas; and the treated blast furnace gas is conveyed into a blast furnace gas user or is stored in a gas cabinet througha gas pipe network. The integral treatment technology which integrates blast furnace gas desulfurization, dechlorination and blast furnace top uniform pressure gas recovery has a high integration degree, and can run stably and reliably.
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Description

technical field

[0001] The invention relates to an environmental protection comprehensive treatment system and process for ironmaking blast furnace gas. The blast furnace gas environmental protection comprehensive treatment system and process can effectively remove sulfur and chlorine in the blast furnace gas, so that the flue gas discharged from the blast furnace gas after combustion can meet the national environmental protection requirements. . Background technique

[0002] Blast furnace gas is a by-product combustible gas in the blast furnace ironmaking process. It has a large output and is widely used. It can be used as fuel for boilers in power plants, hot blast stoves in ironworks, and heating furnaces in steelworks. The main components of blast furnace gas are CO, CO 2 , N 2 , also contains a small amount of COS, H 2 S, Cl - , dust, etc.

[0003] At present, there are two main treatment methods for blast furnace gas produced in ironworks. Most of them are used as...

Claims

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