VOCs (volatile organic compounds) purification system for waste gas of petrochemical industry

Abstract

The invention discloses a VOCs (volatile organic compounds) purification system for waste gas of petrochemical industry. The system comprises a waste heat exchanger, a gas overheat protection device, a hot gas mass flow meter, a hybrid gas flow regulation valve, a cloth bag type dust remover, a pulse ultraviolet activation-microorganism degradation reactor, a smoke-gas-water washing purification tower, and an induced draft fan. The system creatively utilizes the suitability and the bioactivity degradation function of a Verticillium lecanii KM9083 strain to high-concentration VOCs, VOCs elements in the waste gas are finally decomposed into H2O and CO2, and the biological degradation efficiency of the strain to the VOCs can meet purification treatment requirements of the industrial waste gas. Meanwhile, the system utilizes an ultraviolet radiation resistance function of a benzophenone-hexamethyl phosphorotriamides combination, and adds the medicament to the Verticillium lecanii KM9083 strain in advance, thereby effectively preventing a biological inhibition function of ultraviolet rays to the strain.

Description

technical field [0001] The invention relates to a VOCs purification system for petrochemical industrial waste gas, which belongs to the field of waste gas treatment in environmental protection. Background technique [0002] VOCs is the English abbreviation of volatile organic compounds (volatile organic compounds). Typical VOCs emission sources can be divided into two types: man-made emission sources (including stationary sources and mobile sources) and natural emission sources (including biological sources and non-biological sources). Production process, product consumption behavior and motor vehicle exhaust. The composition of VOCs is complex, and it is very harmful to the human body. The special odor it has can cause various discomforts to the human body, and is toxic and irritating. Many VOCs are known to have neurotoxicity, kidney and liver toxicity, and even carcinogenicity, which can damage blood components and cardiovascular system, cause gastrointestinal disorders...

AI Technical Summary

Problems solved by technology

The advantages of the membrane separation method are good selectivity, strong adaptability, low energy consumption, no phase change, and useful components can be recovered; the disadvantages are large investment and strong dependence on the membrane; higher requirements for membrane surface control, membrane Separation device operating requirements are high

[0010] At present, the organic waste gas treatment methods used at home and abroad include absorption, adsorption, condensation, combustion and biotechnology, etc., but they all have the disadvantages of large investment, long cycle, high operating cost, and the treatment effect is difficult to meet the increasingly stringent requirements. emission requirements

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