Gas purification device for chemical laboratory exhaust air pollution treatment

Abstract

The invention discloses a gas purification device for chemical laboratory exhaust air pollution treatment, and relates to the technical field of gas purification. The device comprises an exhaust fan which is arranged to suck gas from a laboratory and blow the gas out of the laboratory; an organic gas absorption device which is arranged to selectively absorb the gas blown out by the exhaust fan; aphotolysis waste gas treatment device which arranged to photolyze the gas exhausted by the exhaust pipe and exhaust the photolyzed gas. According to the technical scheme, the gas in a laboratory is continuously fed into the pressure container through the exhaust fan, under the action of certain pressure, volatile organic gas and water vapor are absorbed by the filter shell and then discharged through the discharge pipe communicated with the bottom of the pressure container, and then the unabsorbed volatile gas is subjected to a photolysis catalytic reaction; therefore, a part of volatile organic pollutants are degraded and converted into low-molecular compounds under irradiation of high-energy ultraviolet light beams, and pollution of toxic and harmful gas generated in a laboratory to aircan be effectively reduced.

Description

technical field [0001] The invention relates to the technical field of gas purification, in particular to a gas purification device used for the treatment of air pollution outside a chemical laboratory. Background technique [0002] In the chemical laboratory, various toxic and harmful gases will be produced during the experimental operation, especially volatile organic pollutants, which will affect the physical and mental health of the experimenters. Usually, a fume hood is used to directly discharge the gas generated in the laboratory into the air. , which will pollute the air around the laboratory and have a serious impact on the health of people living around the laboratory. [0003] At present, fume hoods are usually used in traditional methods to reduce the concentration of harmful gases in the room, but the pollution of the atmosphere by the exhaust gases has not attracted enough attention. Those skilled in the art usually use multi-layer gas filter elements to disch...

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Problems solved by technology

[0002] In the chemical laboratory, various toxic and harmful gases will be produced during the experimental operation, especially volatile organic pollutants, which will affect the physical and mental health of the experimenters. Usually, a fume hood is used to directly discharge the gas generated in the laboratory into the air. , which will pollute the air around the laboratory and have a serious impact on the health of people living around the laboratory

[0003] At present, the traditional method usually uses a fume hood to reduce the concentration of indoor harmful gases, but the pollution of the atmosphere by the exhaust gas has not attracted enough attention

Those skilled in the art usually use multi-layer gas filter elements to discharge the gas generated in the laboratory into the air through layer-by-layer filtration. However, since the gas generated in the laboratory usually contains various toxic and volatile gases, if passed through The multi-layer gas filter element has very high requirements on the filter element, and the filtering effect gradually decreases with the passage of filtration time. Only by increasing the frequency of filter element replacement can the air pollution caused by the gas generated in the laboratory be effectively prevented.

[0004] Therefore, the present invention provides a kind of purifying device for controlling the air pollution discharged from the chemical laboratory, so as to solve the pollution problem of the toxic and harmful gas discharged from the chemical laboratory to the atmosphere.

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