Blast-furnace gas hydrogen chloride purifying and absorbing compound device and method

Abstract

The invention relates to a blast-furnace gas hydrogen chloride purifying and absorbing compound device and a method, belonging to the technical field of purifying blast-furnace gas in iron and steel plants. The device comprises an alkali liquor electromagnetic valve, an alkali liquor blind plate valve, an alkali liquor gate valve, an alkali liquor conveying and distributing pipeline, an alkali liquor nozzle, an industrial water electromagnetic valve, an industrial water blind plate valve, an industrial water gate valve, an industrial water conveying and distributing pipeline, an industrial water nozzle, a liquor-removal tower shell, an air current distribution plate, an air-liquor separation filler, an industrial reuse water electromagnetic valve, an industrial reuse water blind plate valve, an industrial reuse water gate valve, an industrial reuse water conveying and distributing pipeline, an industrial reuse water nozzle, a drainage pipeline and a drainage gate valve, which are sequentially connected through flanges. After unpurified blast-furnace gas sequentially is mixed with industrial water and alkali liquor in a spraying mode and the mechanical water drops are intercepted by a liquor-removal tower, the clean blast-furnace gas is conveyed to users, and the discharged water is conveyed to low-side uses through pipelines (19) and gate valves (20). The invention has the advantage of solving the problem that the blast-furnace gas dry type dedusting process can not prevent the hydrogen chloride component from corroding gas conduits and devices.

Description

technical field [0001] The invention belongs to the technical field of blast furnace gas purification in iron and steel plants, and in particular provides a blast furnace gas hydrogen chloride purification and absorption compound device and method, which are suitable for the blast furnace gas purification and absorption system for hydrogen chloride contained in the bag dust removal process gas. Background technique [0002] The iron and steel industry is a pillar industry of the national economy and is also a major energy consumer. Therefore, it is of strategic significance to save energy and reduce consumption in iron and steel plants. While producing qualified molten iron, blast furnaces in iron and steel plants produce waste gas containing CO combustible gases. After treatment, this part of waste gas can be used as heating furnaces in iron and steel plants. It is an excellent secondary energy source. There are mainly two blast furnace gas purification processes. The metho...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a blast furnace gas hydrogen chloride purification and absorption composite device and method, which solves the problem that the blast furnace gas dry dust removal process cannot solve the problem that the hydrogen chloride component corrodes gas pipelines and equipment

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