Preparation method of micro-emulsion absorption liquid used for processing organic exhaust gas

Abstract

The invention relates to a preparation method of an organic exhaust gas micro-emulsion absorption liquid, and a method for applying the micro-emulsion absorption liquid for cleaning industrial organic exhaust gas comprising benzene, toluene, xylene, and the like. The invention belongs to the technical field of atmosphere pollution control. The absorption liquid is prepared from the components of, by mass, 80-90% of water, 0.5-3% of a surfactant, 7-19.5% of a coupling agent, and 0.02-0.06% of an auxiliary agent. The surfactant is sufficiently mixed with water, such that a surfactant solution is obtained; the auxiliary agent is dissolved in water, such that an auxiliary agent solution is obtained; the two solutions are combined and uniformly mixed; and the coupling agent is added, and the obtained solution is stirred, such that the organic exhaust gas micro-emulsion absorption liquid is obtained. The organic exhaust gas micro-emulsion absorption liquid is suitable to be used for controlling exhaust gas containing benzene-series volatiles, and has the advantages of convenient raw material source, low cost, mild and stable property, low toxicity, environment-friendliness, no absorption tower corrosion or blocking phenomena, no severe influence to human health, high removal rate to organic exhaust gas, no need of pretreatment upon exhaust gas, and low investment and running cost. Saturated absorption liquid and absorbed organics can be recycled, such that waste can be turned useful.

Description

technical field

[0001] The invention relates to a method for preparing a microemulsion absorption liquid for treating organic waste gas, which can be applied to treat "triphenyl" (benzene, toluene, xylene) and other industrial organic waste gases, and belongs to the technical field of industrial waste gas environmental pollution control. Background technique

[0002] A large amount of organic waste gas will be emitted in petrochemical, coating, spraying, printing, adhesive production, ink, semiconductor and electronic product manufacturing, wood-based panel and wooden furniture manufacturing, leather, fine chemical industry, etc., such as : Volatile organic compounds such as benzene series, phenols, polycyclic aromatic hydrocarbons, etc. The components in industrial organic waste gas are very complex, but benzene-containing organic waste gas is the most important one. The main components of benzene-containing organic waste gas are benzene, toluene, and xylene, which are ext...