Method and device for treating malodorous flue gas

Abstract

The invention discloses a foul flue gas treatment device which consists of two parts, namely an organic aerosol particle pollutant separation part and a VOCs and SVOCs molecular decomposition part, wherein the organic aerosol particle pollutant separation part structurally comprises a nonmetallic housing in which a lower electrostatic separation gas collection chamber, a gas distributor and an upper electrostatic separation gas collection chamber are sequentially arranged; the VOCs and SVOCs molecular decomposition part structurally comprises a housing in which a lower organic matter decomposition gas collection chamber, a secondary reaction layer sieve plate, a primary reaction layer sieve plate, a hydrogen peroxide reaction liquid sprayer, a filler reaction area, an acidic reaction liquid sprayer, a partition plate, an alkali liquor absorption area and an upper organic matter decomposition gas collection chamber are sequentially arranged. The invention further provides a foul flue gas treatment method. When the foul flue gas treatment device is used for treating foul flue gas, the treatment efficiency of organic pollutants reaches over 95 percent, VOCs and SVOCs can be completely decomposed, and undesirable odor can be completely eliminated.

Description

technical field [0001] The invention relates to a malodorous flue gas treatment device and method, belonging to the field of environmental science and technology. Background technique [0002] At present, the high-temperature evaporation drying process is widely used in industrial production, such as: spray granulation of fermentation waste liquid in the amino acid industry, spray drying in the yeast industry, high-temperature drying of fertilizer industry products, and drying of dregs in the pharmaceutical industry. The common characteristics of these processes Yes: While the water is evaporating, the raw materials rich in organic matter are decomposed into small molecular substances VOCs (volatile organic compounds) or SVOCs (semi-volatile organic compounds) that are volatile and have peculiar smell (odor) under high temperature conditions. The higher the temperature , the stronger the odor, for example, at a temperature of 550°C, the organic waste liquid is sprayed and gr...

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Problems solved by technology

The invention patent (patent number ZL 200510044968.5, publication number CN 1810731A) and the utility model patent (patent number ZL 200920027225.0, authorized announcement number CN 201419120Y) using the principle of electrostatic separation have achieved comparative Good treatment effect, more than 95% of the organic matter (more than 99% of the particulate matter) is separated, and the visual pollution of the smoke belt is eliminated, but it is powerless to the VOCs and SVOCs molecules in the saturated water vapor environment, which still exist after treatment Strong odor and odor, unable to achieve an effective breakthrough in governance technology

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