Oil-in-water type emulsion preparing method and application of oil-in-water type emulsion in organic waste gas treatment

Abstract

The invention discloses an oil-in-water type emulsion preparing method and the application of the oil-in-water type emulsion in organic waste gas treatment. The oil-in-water type emulsion is prepared from, by mass, 1-20% of oil, 0.1-5.0% of emulgator, 0-1.0% of additive, and the balance water. The preparing method comprises the steps of dissolving emulgator in water while stirring, increasing the temperature to 20-60 DEG C, adding oil, conducting stirring for 0.5 h, and then adding additive and conducting stirring for 0.5-1.5 h, so that the oil-in-water type emulsion is obtained. The oil-in-water type emulsion is wide in raw material source, low in price, easy and safe to transport, store, prepare and use, and low in production cost. Furthermore, the oil-in-water type emulsion application technology is simple, pollutant removing efficiency is high, blistering is avoided, and application range is wide. By the adoption of the emulsion, aromatic hydrocarbon removing efficiency is larger than or equal to 90%, ester removing efficiency is larger than or equal to 90%, ketone removing efficiency is larger than or equal to 90%, and hydrocarbon removing efficiency is larger than or equal to 80%.

Description

technical field [0001] The invention belongs to the technical field of air pollution control, and in particular relates to the preparation of an oil-in-water emulsion and its application in organic waste gas treatment. Background technique [0002] In recent years, my country's air pollution situation has become increasingly severe. Smog and haze weather frequently occurs in the central and eastern regions and the Pearl River Delta region, and PM2.5 seriously exceeds the standard. Volatile organic compounds (VOCs) emitted by industrial production are one of the main causes. Studies have shown that VOCs emissions from industrial sources in my country account for more than 30% of VOCs emissions from man-made sources, and the contribution rate of VOCs emissions from industrial sources in the Pearl River Delta is as high as 50%. Industrial sources not only have a high contribution rate of VOCs emissions, but also have the characteristics of numerous industries, various types of ...

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Problems solved by technology

[0003] Due to the late start of research and application of organic waste gas purification technology in my country, there are currently problems such as few treatment methods, immature technology, large investment, and high operating costs.

Although forced by environmental pressure, most domestic enterprises have built organic waste gas treatment devices at present, and the technologies used include activated carbon adsorption, absorption, catalytic combustion, low-temperature plasma, microbial treatment, etc. Among them, activated carbon adsorption, catalytic combustion However, the above-mentioned processes have a series of problems in the actual operation process, such as the high price of activated carbon, difficult regeneration and easy clogging, expensive metal catalysts are expensive and easy to poison, and the absorption efficiency of the absorption method is low. Part of the project did not meet the VOCs governance expectations in actual operation

Therefore, the current lack of effective VOCs treatment technology in China hinders the implementation of my country's industrial VOCs treatment plan

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