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

A technology of organic waste gas and absorption liquid, which is applied in separation methods, chemical instruments and methods, and separation of dispersed particles. It can solve the problems of difficult emission standards for waste gas, high technical costs, and difficult recycling of resources, so as to achieve no secondary pollution, The effect of obvious economic benefit and fast absorption speed

Inactive Publication Date: 2013-06-19
GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a recyclable method for preparing microemulsion absorption liquid for treating industrial organic waste gas, so as to solve practical problems such as high cost of existing organic waste gas treatment technology, difficult discharge standards of waste gas, and difficult recycling of resources.

Method used

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Examples

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Effect test

Embodiment 1

[0024] The organic waste gas emitted by an electronic circuit board factory is a high-concentration "triphenyl" waste gas, and the concentration range of the main organic matter is: benzene 100-150mg / m 3 , Toluene 2000~3000mg / m 3 , Xylene 150~200mg / m 3 , the exhaust gas volume is 6000m 3 / h; Exhaust gas temperature: 30-40°C.

[0025] The composition (by mass percentage) of the organic waste gas microemulsion absorption liquid is as follows: 0.5% lauryl amidopropyl betaine, 1.0% octylphenyl polyoxyethylene ether, 0.6% sodium dodecylbenzenesulfonate , 1,2-propylene glycol 10%, polydimethylsiloxane 0.03%, hydroxyl silicone oil 0.03%, and the rest is water. The preparation method is as follows: first, the surfactant lauryl amidopropyl betaine, octylphenyl polyoxyethylene ether, sodium dodecylbenzenesulfonate and water are fully mixed to obtain a surfactant solution; The auxiliary agent polydimethylsiloxane and hydroxy silicone oil are dissolved in water to obtain an auxiliary ...

Embodiment 2

[0030] The organic waste gas discharged from a furniture production workshop, the main organic matter concentration range is: n-hexane 150-250mg / m 3 , ethyl acetate 200~450mg / m 3 , butyl acetate 100~200mg / m 3 , formaldehyde 300~500mg / m 3 , the exhaust gas volume is 3000m 3 / h; Exhaust gas temperature: 30-40°C.

[0031]The composition (by mass percentage) of the organic waste gas microemulsion absorption liquid is as follows: 0.5% lauryl amidopropyl betaine, 0.5% octylphenyl polyoxyethylene ether, 0.5% sodium dodecylbenzenesulfonate , dimethylacetamide 7%, polydimethylsiloxane 0.02%, hydroxyl silicone oil 0.03%, and the rest is water. The preparation method is as follows: first, the surfactant lauryl amidopropyl betaine, octylphenyl polyoxyethylene ether, sodium dodecylbenzenesulfonate and water are fully mixed to obtain a surfactant solution; The auxiliary agent polydimethylsiloxane and hydroxyl silicone oil are dissolved in water to obtain an auxiliary agent solution; th...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/78B01D53/72
Inventor 肖潇晏波傅家谟肖贤明
Owner GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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