Combined purification method for effluvial exhaust air

A waste gas purification and odor technology, which is applied in chemical instruments and methods, separation methods, and dispersed particle separation, etc., can solve problems such as the inability to meet the continuous operation requirements of the catalytic combustion device and the unfavorable stable operation of the catalytic combustion device, and achieve high cost and operation. The effect of low cost and simple process flow

Active Publication Date: 2007-10-31
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

However, since the desorbed concentrated gas after adsorption treatment is generally produced intermittently, it cannot meet the continuous operation requirements of the catalytic combustion device,

Method used

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  • Combined purification method for effluvial exhaust air

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[0025] Example 1-12

[0026] Collect the waste gas produced by the sewage biochemical aeration tank and sludge aging tank of a petrochemical enterprise, and wash it with the sewage discharged from the enterprise in the packed tower. The gas-liquid contact time is 2-5s, and the washing strength is 3-7L washing liquid / M 3 Exhaust gas. The exhaust gas after washing is adsorbed by activated carbon, and the adsorption process is switched by two adsorbers. When the concentration of odorous components in the exhaust gas is higher than GB 162976-1996 "Comprehensive Emission Standard of Air Pollutants", GB14554-93 "Emission Standard of Odor Pollutants" , Local emission standards and other relevant limit values, switch (specific operations can be determined according to needs). The volumetric space velocity of the adsorption process is 1500hr -1 . Desorption regeneration adopts 250℃ steam regeneration, and the space velocity is 50hr -1 . Or use catalytic combustion exhaus...

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Abstract

The invention relates to the comprehensive purification method for foul odor. It categorizes the foul odor from various sources by VOC density. Low density VOC waste is cleaned first, the absorption purification to achieve tail gas emission standard, sewage treatment for the cleaned waste water. The desorption resurgent gases is mixed with high density VOC waste for density average, burning and purification. It can effectively purify waste gases from various sources and features, with simple process, good purification effect, low energy consumption and easy operation.

Description

technical field [0001] The invention relates to a comprehensive purification method of malodorous waste gas, which is a comprehensive purification treatment method for different types of malodorous waste gas produced by sewage treatment systems, especially the synthesis of various types of malodorous waste gas produced by sewage collection, transportation and treatment systems of enterprises such as oil refineries. Purification treatment method. Background technique [0002] In oil refining, chemical and other enterprises, there are many production units or facilities that will produce foul-smelling exhaust gas, which has become an important source of pollution for such enterprises. Odor pollution sources in oil refining, chemical and other enterprises mainly include storage tank volatilization and sewage treatment system escape. The composition and concentration of the malodorous exhaust gas vary greatly with the different pollution sources, and there are great changes wit...

Claims

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Application Information

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IPC IPC(8): B01D53/86B01D53/04
Inventor 刘忠生陈玉香方向晨王海波王新郭兵兵
Owner CHINA PETROLEUM & CHEM CORP
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