Efficient treatment equipment of chromic acid mist

Abstract

The invention discloses efficient treatment equipment of chromic acid mist, which comprises a base and a tank body arranged at the upper part of the base, wherein a support plate is horizontally arranged in the tank body; a demisting treatment component is arranged at the upper part of the support plate and comprises a first filling area and a second filling area that are arranged at an interval in parallel; the first filling area comprises a first filling net; the first filling net is filled with 5 micrometers high-density gauze filling; the second filling area comprises a second filling net;the second filling net is filled with 3 micrometers high-density gauze filling; a demisting layer is arranged on one side of the second filling area and comprises a third filling net; the third filling net is filled with 2 micrometers extra-fine density demisting filling. The equipment is filled with the three layers of the filling with different knitting densities, and has high removal efficiency; the filling does not cause blocking; the equipment can efficiently remove the chromic acid mist from waste gas; the waste gas is emitted after meeting national standards; a white mist phenomenon atan emission point is reduced; the equipment is convenient and quick to operate and maintain, and can achieve higher removal efficiency without adding of a chemical reagent.

Description

technical field [0001] The invention relates to a chromic acid mist removing device in the field of electroplating, in particular to a chromic acid mist high-efficiency treatment device. Background technique [0002] Chromic acid mist is a liquid droplet formed by volatilization of chromic acid in the air, which is commonly found in the air around the electroplating tank in electroplating operations. When the mass concentration in the air reaches 0.1mg / m3, long-term exposure can cause nasal septal perforation; if the concentration of chromic acid mist is too high, nasal septal perforation can occur after exposure for several months. In addition, it can also cause pharyngitis, pneumonia and allergic asthma. Chromic acid mist is a skin allergen, causing allergic dermatitis or eczema. The characteristics of eczema are mostly small, coin-shaped, mainly subacute, showing erythema, infiltration, exudation, desquamation, and long course of disease. Unhealed; entering by breathing...

AI Technical Summary

Problems solved by technology

[0003] The current national emission standards for chromic acid mist are relatively strict (emission concentration ≤ 0.07mg / m3), and the removal efficiency of conventional horizontal scrubbers for chromic acid mist is not high (generally 80%-90%), and it is difficult to meet the emission requirements

At present, most of them improve the emission concentration by increasing the packing height or increasing the demisting thickness, but the effect is not obvious, which increases the pressure loss of the equipment and causes energy waste.

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