Experimental device for testing performance of photocatalytic ozone synergetic catalytic degradation of volatile organic gas, and operation process thereof

Abstract

The invention discloses an experimental device for testing the performance of photocatalytic ozone synergistic catalytic degradation of volatile organic gas, and an operation process thereof. The device comprises an air generator, an oxygen steel cylinder, a volatile organic gas steel cylinder, a mass flow meter, an ozone generator, a humidifier, a hygrothermograph, a gas mixer, a light source, aplate reactor, an ozone analyzer, a gas chromatograph, a first valve, a second valve, a third valve and a tail gas treatment device. The experimental device disclosed by the invention is suitable foran experiment of photocatalytic degradation of volatile organic gas in mixed gas, and the experimental device can be used for researching photocatalysis and ozonization of waste gas at a small-scale experimental research level and a large-scale factory production level, adopts a continuous sample injection method for experiments, and has the advantages of wide experimental conditions, simple structure, convenience in use, reliable performance and the like.

Description

technical field [0001] The invention belongs to the field of experimental chemistry, and in particular relates to an experimental device for performance testing of photocatalytic ozone synergistic catalytic degradation of volatile organic gases and an operating process thereof. Background technique [0002] Volatile organic compounds include most solvents such as solvent thinners, degreasers, detergents, lubricants and liquid fuels, which are widely present in the industrial production process and daily use of these products. There are many kinds of them. Under certain conditions, some volatile organic compounds with relatively active chemical properties will also combine with nitrogen oxides (NO x ), disulfide (R-S-S-R') and other disposable pollutants undergo photochemical reactions to produce secondary pollutants with strong oxidative properties, such as ozone, aldehydes, ketones, and particle pollutants, which are even more harmful than primary pollutants. pollutants ar...

AI Technical Summary

Problems solved by technology

However, in the process of photocatalytic decomposition of volatile organic compounds, the volatile organic compounds and intermediate products adsorbed on the surface of the catalyst lead to catalyst deactivation and thus reduce the catalytic efficiency.

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