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Organic waste gas microemulsion absorbent, and preparation method and use thereof

A technology of organic waste gas and absorbent

Active Publication Date: 2010-09-29
SOUTH CHINA INST OF ENVIRONMENTAL SCI MEP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above absorbents or absorbents are mainly derived from petroleum hydrocarbons and their derivatives, which have high saturated vapor pressure or high concentration of chemicals in the air, and are easy to volatilize and cause secondary pollution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0028] The preparation steps of organic waste gas microemulsion absorbent are as follows:

[0029] Dissolve the surfactant in water to obtain a surfactant solution; dissolve the auxiliary agent and inorganic salt in water to obtain an auxiliary agent solution; mix the surfactant solution and the auxiliary agent solution while stirring continuously until it is clear or semi The organic waste gas microemulsion absorbent is obtained transparently. Its particle size is between 5-50nm, thermodynamically stable, and can produce ultra-low oil-water interfacial tension. The measured surface tension at 25°C is 25-35×10 -3 N·m -1 (The surface tension of water under the same conditions is 72.3×10 -3 N·m -1 ). The solubilization of pollutants can reach more than 60%.

[0030] The main parameters and process of using organic waste gas microemulsion adsorbent to treat organic waste gas are as follows:

[0031] Absorption tower specifications: tower height 3.0m, inner diameter 0.8m, pa...

Embodiment 1

[0036] The organic waste gas from the production of a synthetic leather, the main toxic and harmful gas concentration is: toluene 150-250mg / m 3 , Butanone 100~300mg / m 3 , Acetone 150~300mg / m 3 , the air volume is 3000~5000m 3 / h, temperature: 40-60°C.

[0037] The average emission concentration of untreated organic waste gas is: toluene 243.5mg / m 3 , Butanone 268.3mg / m 3Acetone 248.3mg / m 3 . The composition of organic waste gas microemulsion absorbent and the purification effect of organic waste gas after treatment are shown in Table 1.

[0038] Composition and purification effect of organic waste gas microemulsion absorbent in Table 1 Example 1

[0039]

Embodiment 2

[0041] The organic waste gas emitted by a certain semiconductor production, the main toxic and harmful gas concentration is: acetone 200 ~ 500mg / m 3 , methyl ethyl ketone 100~300mg / m 3 , Toluene 200~300mg / m 3 , the air volume is 2000~3000m 3 / h, temperature: 30-60°C.

[0042] The average emission concentration of untreated organic waste gas is: acetone 375.6mg / m 3 , methyl ethyl ketone 236.5mg / m 3 , toluene 271.5mg / m 3 . The composition of organic waste gas microemulsion absorbent and the purification effect of organic waste gas after treatment are shown in Table 2.

[0043] Composition and purification effect of organic waste gas microemulsion absorbent in Table 2 Example 2

[0044]

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Abstract

The invention discloses an organic waste gas microemulsion absorbent, and a preparation method and application thereof. The absorbent comprises the following components in percentage by mass: 99.8 to 99.4 percent of water, 0.01 to 2 percent of surfactant, 0.05 to 2 percent of aid and 0.1 to 2 percent of inorganic salt. The preparation method comprises the following steps of: dissolving the surfactant with the water to obtain solution of surfactant; dissolving the aid and the inorganic salt in the water to obtain solution of aid; and mixing the solution of surfactant and the solution of aid and continuously stirring the mixed solution at the same time to obtain the organic waste gas microemulsion absorbent. The organic waste gas microemulsion absorbent is suitable for treating organic waste gases, and has the advantages of broad raw material sources, low cost, low saturated vapor pressure, non-toxicity, stable chemical properties, less corrosion to equipment, high organic waste gas removal efficiency, no need of pre-treating the waste gases, less investment, low running cost and the like; and the saturated absorbent can be recycled so as to realize the comprehensive utilization of resources.

Description

technical field [0001] The invention belongs to the technical field of air pollution control, and in particular relates to an organic waste gas microemulsion absorbent and a preparation method thereof and the use thereof to purify benzene-containing substances, esters, polycyclic aromatic hydrocarbons, aldehydes, ketones, alcohols, halogenated hydrocarbons, organic sulfides and Chloride and other industrial organic waste gas methods. Background technique [0002] Air pollution is one of the most prominent environmental problems in my country at present. Volatile organic waste gases (VOCs) are an important source of air pollutants, including benzene series, esters, polycyclic aromatic hydrocarbons, aldehydes, ketones, alcohols, halogenated hydrocarbons, organic Volatile organic compounds such as sulfides and chlorides, and bad odors. Organic waste gas is produced in a large amount and covers a wide range, involving industries such as furniture, various spraying, shoemaking, p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/14
Inventor 岑超平陈定盛唐志雄方平陈志航
Owner SOUTH CHINA INST OF ENVIRONMENTAL SCI MEP
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