Chromium fog waste gas recovery treatment device

Abstract

The invention discloses a chromium fog waste gas recovery treatment device which comprises a waste gas collecting device and a waste gas treatment device, wherein the waste gas collecting device consists of a rim exhaust hood (1), an air inlet pipe (2), and an air draft branch pipe header pipe (3), wherein the air inlet pipe (2) is connected with the rim exhaust hood (1) and the air draft branch pipe header pipe (3), the air draft branch pipe header pipe (3) is arranged at the upper end of the rim exhaust hood (1), an electroplating bath (11) is arranged at the lower end of the rim exhaust hood (1), and a gap is arranged at the lower end of the rim exhaust hood (1), at least three air draft holes (10) are arranged in the upper end of the rim exhaust hood (1), a movable cover plate (9) is arranged on the rim exhaust hood (1), the waste gas treatment device consists of a waste gas spraying purification tower (4), an air outlet pipe (5), a chromium fog recoverer (6) and a recovery liquid tank (7), and a funnel cap (8) is arranged at the upper end of the recovery liquid tank (7). By adopting the structure, the solution can be effectively recovered, and the emission concentration can be reduced.

Description

technical field [0001] The invention relates to electroplating equipment, in particular to a recycling and processing device for chrome-plating waste gas in electroplating. Background technique [0002] At present, the electroplating industry occupies an important position in my country's industry, mainly chrome plating, which is used in various chrome plating industries, such as: engineering continuation, coal mining machinery and piston rings. During the electroplating process, a large amount of Heavy metal chrome-plating waste gas, if it is not treated in time and discharged into the atmosphere, will cause serious environmental pollution. In recent years, most of the treatment of chrome-plating waste gas is to concentrate and utilize the heavy metals in the electroplating waste gas. The actual utilization rate of acid is 20%, and 30% of chromic acid is consumed by volatilization in exhaust gas, resulting in a lot of waste. Contents of the invention [0003] The technical...

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Problems solved by technology

[0002] At present, the electroplating industry occupies an important position in my country's industry, mainly chrome plating, which is used in various chrome plating industries, such as: engineering continuation, coal mining machinery and piston rings. During the electroplating process, a large amount of Heavy metal chrome-plating waste gas, if it is not treated in time and discharged into the atmosphere, will cause serious environmental pollution. In recent years, most of the treatment of chrome-plating waste gas is to concentrate and utilize the heavy metals in the electroplating waste gas. The actual utilization rate of acid is 20%, and 30% of chromic acid is consumed by volatilization in exhaust gas, causing a lot of waste

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