Pollution Control Method to Prevent Harmful Gas from Short Circuit

Abstract

The invention discloses a pollution control method for preventing harmful gas from short-circuiting. The method is to set a suction hood mouth at the position of each organic solvent gas pollution source, and by controlling the power of the suction fan, the total pressure difference between the inside of the suction hood and the outside of the suction hood is greater than 50Pa, and the organic solvent polluted gas collected by the suction fan Enter one of the activated carbon adsorbers, and the adsorbed harmful gas is discharged through the pipeline; the hot air enters one of the activated carbon adsorbers to desorb the activated carbon, and the desorbed gas enters the low-temperature incinerator, and under the action of a non-precious metal catalyst, it is lower than Incineration at a low temperature of 700 degrees, after incineration, the gas is discharged up to the standard. The present invention can effectively ensure that each tuyere has sufficient suction force to suck and discharge gas from pollution sources by installing an active fan at each air suction port. Harmful gases absorbed by the fan are directly adsorbed by the activated carbon, which saves the washing process of the prior art and improves the adsorption capacity of the modified activated carbon more effectively.

Description

technical field [0001] The invention relates to the emission control of polluted gas, in particular to a pollution control method for preventing harmful gas from short-circuiting, which can be used for pollution control in chemical plant production workshops and laboratories. Background technique [0002] Existing technologies for the treatment of harmful polluting gases such as figure 1 As shown, the usual process is: multiple pollution sources → multiple suction outlets → centralized air duct → water shower cleaning → activated carbon adsorption → fan → emptying. Specifically, the gases from multiple pollution sources pass through the suction hood openings 1 of multiple suction ports, and then are sent to the water shower cleaning device 4 by the centralized air duct. Machine 2. There are following problems in this technical process: (1) the more sources of pollution, the more air suction ports, and the more chances of gas short-circuiting. Gas short-circuit means that ...

AI Technical Summary

Problems solved by technology

This technical process has the following problems: (1) The more sources of pollution, the more air suction ports, and the more chances of gas short-circuiting

Gas short-circuit means that because multiple suction ports are connected in parallel and then sucked by one exhaust fan, the displacement of polluted gas at each parallel suction port is different, and the resistance to suction is different, making the wind force of each suction port uncontrollable. It is possible to artificially balance and adjust the wind force of the suction port, but a slight change in a certain link during the production process will cause the entire system to lose balance, making some suction ports unable to suck air, and the expected pollution control effect cannot be achieved

(2) The effect of water emulsification cleaning is not great, organic solvent gas is difficult to miscible with water and the mass transfer exchange coefficient is very low

(3) Since the previous stage is the process of water emulsification and cleaning, the moisture content of the gas is very high, and the gas with high moisture content enters the activated carbon for adsorption, which greatly affects the adsorption capacity of the activated carbon

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