Filtering equipment for strong-acid and strong-alkali waste gas

Abstract

The invention discloses filtering equipment for strong-acid and strong-alkali waste gas. The filtering equipment for strong-acid and strong-alkali waste gas comprises a cylindrical cylinder body; andthe cylinder body comprises an upper gas discharging chamber, a middle filtering chamber and a lower gas collecting chamber. The key points are as follows: the filtering efficiency of high-acidity orhigh-alkalinity gas is improved, harmful gas in the waste gas is reduced, the weight of the air is increased, smoke dust in the waste gas is removed, and the waste gas components which are difficult to remove by acid and alkali are removed efficiently and rapidly; and different from other acid and alkali waste gas filtering devices, the equipment can improve the use efficiency of a reagent for neutralizing acid and alkali gas, and saves use of the reagent and reduces cost while not influencing the purification effect.

Description

technical field [0001] The invention relates to the technical field of environmental protection equipment, in particular to a filtering equipment for strong acid and strong alkali waste gas. Background technique [0002] Acid-base waste gas, as a common industrial waste gas in the industrial production process, has a chronic poisonous effect on human health. Therefore, how to reduce the content and discharge of acid-base substances in industrial waste gas has become an urgent problem for industrial enterprises. If acid and alkali waste gas such as pickling gas, degreasing and alkali cleaning gas, antirust passivation liquid gas, etc. are not properly treated, it will lead to many serious consequences, such as: environmental pollution, which will have harmful effects on factory buildings, especially modern steel structure buildings. Great corrosion, causing irreparable losses; affecting the surface quality of finished products and re-products, especially acid gas will cause c...

AI Technical Summary

Problems solved by technology

If acid and alkali waste gas such as pickling gas, degreasing and alkali cleaning gas, antirust passivation liquid gas, etc. are not properly treated, it will lead to many serious consequences, such as: environmental pollution, which will have harmful effects on factory buildings, especially modern steel structure buildings. Great corrosion effect, causing irreparable losses; affecting the surface quality of finished products and re-products, especially acid gas will cause corrosion and rust spots on the surface of copper and copper alloy strips

In addition, acid-base waste gas is also very harmful to human health.

[0003] The most effective existing treatment method for acid-base waste gas is to pass the acid-base waste gas into the absorption tower containing the corresponding acid / base neutralization liquid for neutralization and absorption. However, the acid-base waste gas is neutralized and absorbed during the neutralization and absorption process. The alkali neutralization liquid is transferred to the recovery device for recycling after the acid-base waste gas is neutralized once, resulting in a large waste of acid / alkali neutralization liquid; at present, the acid-base waste gas treatment devices produced by some enterprises can / Alkali neutralizing liquid is recycled, but in the actual application process, due to the inability to judge the state of acid / alkali neutralizing liquid, the use of neutral liquid for acid-base absorption occurs from time to time, further causing acid-base waste gas The purification treatment is not complete, and the acid-base waste gas after treatment still cannot meet the emission standards

[0004] The present invention mainly solves the problems of incomplete removal of acid-base waste gas by existing equipment, low removal efficiency, and easy waste of neutralization reagents

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