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Absorption/adsorption coupling enhanced stink and organic waste gas treatment method

A technology of organic waste gas and enhanced absorption, applied in chemical instruments and methods, gas treatment, separation methods, etc., can solve the problems of low removal efficiency of organic components, large amount of industrial waste gas, secondary pollution, etc., and achieve low cost and use. A small amount, to achieve the effect of solubilization

Active Publication Date: 2022-03-22
SOUTH CHINA INST OF ENVIRONMENTAL SCI MEP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Water is the cheapest and easy-to-obtain absorbent, and the water absorption method has been widely used in engineering. However, the removal efficiency of the water absorption method for odor and insoluble organic components in organic waste gas is not high
The adsorption method using activated carbon as the adsorbent is also widely used, and the removal efficiency of odor and organic waste gas is very high. However, the amount of industrial waste gas is large and wide, and the amount of activated carbon required for treatment is large, and the cost is high. Become hazardous waste and easily cause secondary pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A treatment method for odor and organic waste gas that strengthens absorption / adsorption coupling. Odor and organic waste gas enter the first-level absorption tower and the second-level absorption tower in turn. The first-level absorption tower is equipped with a water spray device to remove odor and organic waste. Components that are readily soluble in water, such as NH 3 , trimethylamine and H 2 S, etc.; then enter the secondary absorption tower, be fully absorbed and adsorbed under the coupling action of the composite absorbent and adsorbent in the absorption tower, and then discharged.

[0037] The first-level absorption tower is a spray tower, including an air inlet, a three-layer spray device, a demister, an exhaust port, and a water pump. Odor and organic waste gas enter the tower through the air inlet at the lower part of the absorption tower, water is sprayed into the tower through a three-layer spray device, and flows countercurrently with the waste gas under...

Embodiment 2

[0054] The raw material of the active ingredient in the composite absorbent is soybean oil, the additive is sodium chloride, the ratio of the active ingredient in the composite absorbent is 0.03%, the ratio of NaCl is 1%, and the rest is water. The activated carbon raw material is coconut shell. Secondary absorption tower absorption / adsorption coupling operating conditions: liquid-gas ratio 10L / m 3 , activated carbon 3g / L, temperature 20°C. The simulated exhaust gas composition is: toluene concentration 130ppm, NH 3 The concentration is 350ppm, and the concentration of trimethylamine is 150ppm. Measured effect: Toluene removal rate is higher than 85%, NH 3 The removal rate is higher than 95%, and the removal rate of trimethylamine is higher than 92%.

[0055] The non-implemented part of this embodiment is the same as that of Embodiment 1.

Embodiment 3

[0057] The raw material of the active ingredient in the composite absorbent is palm oil, the additive is sodium chloride, the ratio of the active ingredient in the composite absorbent is 0.01%, the ratio of NaCl is 1%, and the rest is water. The activated carbon raw material is coconut shell. Secondary absorption tower absorption / adsorption coupling operating conditions: liquid-gas ratio 10L / m 3 , activated carbon 3g / L, temperature 20°C. The simulated exhaust gas composition is: toluene concentration 130ppm, NH 3 The concentration is 350ppm, and the concentration of trimethylamine is 150ppm. Measured effect: the removal rate of toluene is higher than 80%, NH 3 The removal rate is higher than 95%, and the removal rate of trimethylamine is higher than 92%.

[0058] The non-implemented part of this embodiment is the same as that of Embodiment 1.

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PUM

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Abstract

The invention relates to the field of foul smell and organic waste gas treatment, and particularly discloses an absorption / adsorption coupling enhanced foul smell and organic waste gas treatment method. An absorption / adsorption coupling enhanced stink and organic waste gas treatment method comprises the following steps that stink and organic waste gas sequentially enter a first-stage absorption tower and a second-stage absorption tower, a water spraying device is arranged in the first-stage absorption tower, and water-soluble components such as NH3, trimethylamine and H2S in the stink and organic waste gas are removed; and then the gas enters a secondary absorption tower, is fully absorbed and adsorbed under the coupling action of the composite absorbent and the adsorbent in the absorption tower, and is discharged. According to the method, the composite absorbent and the adsorbent promote each other, the usage amount of active ingredients and the adsorbent in the composite absorbent is small, efficiency is high, cost is low, operation is easy, and the method can be used for treating stink and organic waste gas generated by enterprises such as chemical engineering, furniture, sewage treatment plants, livestock and poultry breeding factories and feed processing factories and has wide application prospects.

Description

technical field [0001] The invention relates to the field of stench and organic waste gas treatment, in particular to a method for treating stench and organic waste gas with enhanced absorption / adsorption coupling. Background technique [0002] Industrial enterprises such as chemical industry, furniture, sewage treatment plants, livestock and poultry breeding plants, and feed processing plants will produce foul-smelling exhaust gas during the production process, which not only pollutes the environment, but also affects the comfort of people's lives, and easily leads to social conflicts. [0003] The composition of malodorous exhaust gas is complex, and the odor threshold of most pollutants is low, including organic components such as volatile organic compounds (such as benzene series), and H 2 S, NH 3 Absorption method, adsorption method, combustion method, biological method, plasma method, ultraviolet photolysis method, photocatalysis and its combination technology can be ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/14B01D53/02B01J20/20B01J20/30
CPCB01D53/14B01D53/1493B01D53/1487B01D53/02B01J20/20B01D2252/20B01D2252/60B01D2257/406B01D2257/304B01D53/1406Y02A50/20
Inventor 陆鹏岑超平陈定盛唐志雄黄建航吴海文曾文豪闫显辉
Owner SOUTH CHINA INST OF ENVIRONMENTAL SCI MEP