Absorption and purification device of waste gas

Abstract

The invention relates to an absorption and purification device of waste gas. The device comprises a draught fan for forming a negative pressure environment in the whole device and sucking the to-be-treated waste gas into a waste gas conveying pipeline, the waste gas conveying pipeline used for conveying the waste gas sucked by the draught fan and equipped with a purification device inside, and a separation tower used for purifying the waste gas flowing in the waste gas conveying pipeline and cooling the gas containing collecting agent treated by the purification device, so that the collectingagent in the gas is liquefied and separated, and the separated gas is discharged from the separation tower. The device adsorbs the waste gas into the pipeline through the draught fan for producing negative pressure air, then the collecting agent is conveyed to the pipeline through a circulating pump, and a stable collecting atomization range is formed in the pipeline under the effect of an atomization spray header, so that the collecting agent and the chlorin-containing acid waste gas are sufficiently mixed, and the chlorin-containing acid waste purification rate is improved; the equipment hasthe advantages of being low in investment, low in running cost, high in recycling rate, and good in waste gas purification effect.

Description

technical field [0001] The invention relates to a waste gas collection and purification device for absorbing and purifying high-concentration and large-flow chlorine-containing acid waste gas in the field of hydrometallurgy. Background technique [0002] The flue gas produced by the wet smelting process contains a large amount of sulfur dioxide, acid mist and chlorine gas. These gases are gaseous pollutants that have a greater impact on air pollutants. Human body, environment and ecological system have great harm. In view of the high concentration and large flow of chlorine-containing acid waste gas produced in the hydrometallurgy process, people hope to have a device with strong adaptability, simple operation, and good collection and purification effect to purify the chlorine-containing acid waste gas formed in the hydrometallurgy process. [0003] At present, in the chemical industry and hydrometallurgy industry, alkaline liquid is generally used as the absorption medium ...

AI Technical Summary

Problems solved by technology

[0003] At present, in the chemical industry and hydrometallurgy industry, alkaline liquid is generally used as the absorption medium for the treatment of chlorine-containing acidic waste gas. Under the action of the fan, the chlorine-containing acidic waste gas is concentrated in the spray tower, and the absorption and purification are carried out in the spray tower. The negative pressure in the spray tower is very high, and the flue gas flow rate and velocity are very fast, resulting in a short contact time between chlorine-containing acidic waste gas and alkaline absorption liquid, resulting in incomplete absorption and purification of chlorine-containing acidic waste gas with high concentration and large flow rate. The limitations of the device for absorbing and purifying chlorine-containing acidic waste gas in the shower tower have resulted in blind spots in the leaching system, resulting in incomplete absorption and purification of chlorine-containing acidic waste gas, and incomplete absorption and purification of chlorine gas. The existing purification devices need to be improved and improved. improve

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