Low-temperature plasma catalytic oxidation gas deodorization method

Abstract

The invention discloses a low-temperature plasma catalytic oxidation gas deodorization method. The method comprises the steps that exhaust gas enters the interior of a stainless steel reaction box from a gas inlet, and dust particles in the gas are intercepted through an activated carbon filter layer; then the gas enters a low-temperature plasma reaction chamber, after a power supply is switched on, multiple sets of reaction polar plates in the low-temperature plasma reaction chamber conduct high-voltage discharge to generate substances with a strong oxidizing property, macromolecules, producing malodor, in the gas are broken up into small molecules under the combined action of the substance with the strong oxidizing property and ultraviolet rays, and the small molecules are further oxidized to obtain inorganic molecules when the small molecules make contact with hydroxyl free radicals and oxygen atoms which are released by a catalytic oxidation reaction coating. According to the low-temperature plasma catalytic oxidation gas deodorization method, the low-temperature plasma technology is perfectly combined with the coating catalytic oxidation and ultraviolet oxidation technologies. According to the exhaust gas treated through the method, the removing rate of malodorous gas reaches over 98 percent, the removing rate of harmful microorganisms and bacteria reaches 98.9 percent, and the removing rate of the dust particles reaches 96.2%.

Description

technical field [0001] The invention relates to a low-temperature plasma catalytic oxidation gas deodorization method, which belongs to the field of waste gas treatment in environmental protection. Background technique [0002] Odor pollutants refer to all gaseous substances that stimulate the olfactory organs to cause people's unpleasantness and damage the living environment. Common odor pollutants can be divided into sulfur-containing compounds, nitrogen-containing compounds, halogens and their derivatives, hydrocarbons, and oxygen-containing organic compounds according to their composition. Due to the lack of air flow in the municipal solid waste dump site, the gas released after fermentation often contains the above-mentioned substances, so there will be a relatively large stench, which seriously affects the living environment and human health. [0003] Odor pollutants can often be treated by dilution diffusion method, neutralization method, absorption method, adsorptio...

AI Technical Summary

Problems solved by technology

However, during the purification process, plasma can produce more toxic intermediate products or intermediate products with larger molecules and more difficult to degrade than the original molecules. There are problems of incomplete oxidation and secondary pollution caused by ozone residues. At the same time, too high Processing cost is also the key to restrict its application

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