Purification system for mixture of micro-particles and volatile organic gas

Abstract

The invention belongs to the technical field of exhaust gas purification and particularly relates to a purification system for a mixture of micro-particles and volatile organic gas. The purification system comprises a particulate filter, a wet oxidation reaction tower, a photocatalytic reaction module, a fan and a flue gas discharge device and the above parts are orderly communicated through pipes. The photocatalytic reaction module comprises one or more photocatalytic reactors connected in parallel. The photocatalytic reactor comprises an electrodeless UV lamp, a quartz casing pipe and an outer cylinder. The electrodeless UV lamp comprises an inner electrode, an outer electrode and a variable high voltage power supply. Each inner wall of the outer cylinder is uniformly and fixedly provided with catalyst glass slides. The catalyst glass slide is uniformly coated with a catalyst. Through synergism purification of the three treatment methods, exhaust gas is completely decomposed. The adjustable variable high-voltage power supply can change low-pressure mixed gas so that ultraviolet lights with different wavelengths are obtained, different exhaust gas is degraded and activated carbonadsorption is avoided. The purification system has high purification efficiency, realizes a low cost and is easy to use.

Description

technical field [0001] The invention belongs to the technical field of waste gas purification, and in particular relates to a purification system for the mixture of microparticles and volatile organic gases. Background technique [0002] Volatile organic compounds (VOCs) are one of the most important pollutants in the air. Many VOCs are highly toxic and are odorous substances, which pose serious hazards to human health. VOCs substances can also produce photochemical smog with NOx emitted by automobiles and factories to form ozone and formaldehyde, etc. Therefore, VOCs form secondary organic aerosol particles and O 3 It is an important precursor of atmospheric pollution and the key to the formation of haze. VOCs can also affect the earth's radiation balance, reduce atmospheric visibility, and seriously endanger human health and the ecological environment. [0003] Some industries, such as petroleum industry, chemical industry, etc., will produce a large amount of exhaust ga...

AI Technical Summary

Problems solved by technology

The utility model patent with publication number 203842462U discloses "a gas purification device for coating production", which mainly adopts the method of "liquid absorption + filtration". The technical solution of the above patent has a good removal effect on particulate matter, but has no effect on VOCs. very good result

[0004] In addition, the absorption method is widely used to treat organic waste gas such as petrochemical industry. Due to the low chemical activity of benzene series in the waste gas, physical absorption method is usually used. The key and difficulty of the technology lies in the selection of absorbent; the adsorption method usually uses activated carbon as the adsorption method to purify VOCs. The purification efficiency is high, but the discarded adsorbent needs to be regenerated or treated as a hazardous waste, which brings additional treatment costs; and the regeneration of the adsorbent is also very troublesome and difficult

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