Blast furnace gas saturator method purification system

Abstract

The invention provides a blast furnace gas saturator method purification system which comprises a saturator, a gas mist catcher, an alkali liquor mother liquor overflow storage and distribution device and a strong brine mother liquor treatment device. A gas inlet and a gas outlet are formed in the upper end of the saturator, the gas outlet communicates with an inlet of the gas mist catcher, a liquid flow outlet in the bottom of the gas mist catcher communicates with the alkali liquor mother liquor overflow storage and distribution device, the gas mist catcher is provided with a clean gas outlet capable of serving as the clean gas output, the alkali liquor mother liquor overflow storage and distribution device and the strong brine mother liquor treatment device both communicate with the saturator. According to the blast furnace gas saturator method purification system provided by the invention, gas deep purification, resource saving and environmental protection cyclic utilization are all taken into account simultaneously, the blast furnace gas quality is improved, new energy is not wasted, and no new pollution source is generated.

Description

technical field [0001] The invention relates to the field of blast furnace gas purification, in particular to a blast furnace gas saturator deacidification purification system. Background technique [0002] In recent years, blast furnace gas dry dedusting, as one of the major energy-saving technologies in the iron and steel industry, has been more and more widely used. However, the dry dedusting process cannot effectively remove HCl and other acid gases contained in blast furnace gas, resulting in corrosion failures in subsequent gas pipelines and auxiliary equipment, resulting in hidden dangers of gas leakage. prominent contradictions. In view of this problem, some technologies and methods have been adopted in the industry. There are two mainstream technologies: one is to remove acid gas by chemical methods, such as spraying lye in the washing tower, or removing HCl contained in the gas through alkaline adsorbent; the other is to use blast furnace gas dehumidification (co...

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Problems solved by technology

Judging from the field feedback, although the application of these technologies has solved some problems, some will bring other problems. At the same time, the amount of brine after absorption is large, and the water content of the subsequent gas is large, which affects the thermal efficiency of users; the removal of HCl by alkaline adsorbents brings a large number of equipment, a large area, and a large amount of adsorbent input. Larger, operating cost and larger amount of waste slag treatment

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