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A kind of organic waste gas absorbent and preparation method thereof

An organic waste gas and absorbent technology, applied in separation methods, chemical instruments and methods, gas treatment, etc., can solve problems such as failure, catalyst poisoning, etc., and achieve the effects of low cost, reduced operating cost, and good compatibility.

Active Publication Date: 2021-03-16
广东凯凌生态环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this UV photocatalytic degradation method is only suitable for the treatment of low-concentration and low-flow exhaust gas. For systems containing dust and polymer particles, the catalyst used is easily poisoned and fails.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0024] An organic waste gas absorbent, comprising the following raw materials in mass percent: 0.5% to 10% of sodium citrate, 0.5% to 10% of dibutoxyethyl phthalate, and 0.5% to 10% of epoxidized soybean oil , sodium dodecylbenzenesulfonate 0.5% to 16%, sodium hexametaphosphate 0.5% to 10%, carboxyl-containing hyperbranched oligomers 0.1% to 10%, camphene 0.05% to 5%, defoamer 0.05 % to 3%, and the rest is water.

[0025]Defoamer can choose byk-077 defoamer.

[0026] Further, the sodium citrate is 0.6% to 8%, dibutoxyethyl phthalate is 0.8% to 7%, epoxy soybean oil is 0.8% to 6%, sodium dodecylbenzenesulfonate is 0.7% to 14%, sodium hexametaphosphate 0.6%-9%, carboxyl-containing hyperbranched oligomer 0.7%-7%, camphene 0.07%-4.2%, defoamer 0.08%-2.25%.

[0027] Further, the sodium citrate is 1.2% to 5%, dibutoxyethyl phthalate is 1.25% to 5%, epoxy soybean oil is 1.1% to 4%, sodium dodecylbenzenesulfonate is 1.5% to 5%, sodium hexametaphosphate 0.6%-1.6%, carboxyl-containin...

no. 2 example

[0039] In this embodiment, the organic waste gas absorbent includes the following raw materials in mass percentage: 1.2% sodium citrate, 1.5% dibutoxyethyl phthalate, 2% epoxy soybean oil, dodecylbenzene 2% sodium sulfonate, 0.8% sodium hexametaphosphate, 0.5% carboxyl-containing hyperbranched oligomer, 0.2% camphene, 0.5% defoamer, and the rest is water.

[0040] When in use, the absorbent can be diluted into an absorbent liquid according to the ratio of 8% absorbent and 92% water.

[0041] During spray absorption, the spray density of the absorption liquid is 10m 3 / (m 2 .h)

[0042] According to the practice test, the purification effect of the absorption liquid is as follows: the absorption rate of p-xylene is as high as 92%, the absorption rate of p-toluene is as high as 90%, and the absorption rate of total VOCs is greater than 91%.

[0043] Refer to the first embodiment for the rest of the undescribed parts, and will not repeat them here.

no. 3 example

[0045] In this embodiment, the organic waste gas absorbent includes the following raw materials in mass percentage: 1.5% sodium citrate, 1.6% dibutoxyethyl phthalate, 1.8% epoxy soybean oil, dodecylbenzene 2.5% sodium sulfonate, 1.1% sodium hexametaphosphate, 1.4% carboxyl-containing hyperbranched oligomer, 0.3% camphene, 0.5% defoamer, and the rest is water.

[0046] When in use, the absorbent can be diluted into an absorbent liquid according to the ratio of 10% absorbent and 90% water.

[0047] During spray absorption, the spray density of the absorption liquid is 13m 3 / (m 2 .h)

[0048] According to the practice test, the purification effect of the absorption liquid is as follows: the absorption rate of p-xylene is as high as 94%, the absorption rate of p-toluene is as high as 91%, and the absorption rate of total VOCs is greater than 91%.

[0049] Refer to the first embodiment for the rest of the undescribed parts, and will not repeat them here.

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PUM

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Abstract

The invention discloses an organic exhaust gas absorbent and a manufacturing method thereof. The organic exhaust gas absorbent comprises following raw materials in percentage by weight: 0.5 to 10% ofsodium citrate, 0.5 to 10% of bis(dibutoxyethyl) phthalate, 0.5 to 10% of epoxy soybean oil, 0.5 to 16% of sodium dodecyl benzene sulfonate, 0.5 to 10% of sodium hexametaphosphate, 0.1 to 10% of hydroxyl containing hyperbranched oligomer, 0.05 to 5% of camphene, 0.05 to 3% of an antifoaming agent, and the balance being water. The manufacturing method comprises following steps: at first, weighing all raw materials according to the formula mentioned above, adding water, sodium citrate, sodium dodecyl benzene sulfonate, and sodium hexametaphosphate into a stirring reactor, stirring water at a lowspeed to dissolve the components, then adding epoxy soybean oil, bis(dibutoxyethyl) phthalate, hydroxyl containing hyperbranched oligomer, and camphene, stirring the components at a high speed to evenly disperse the components, then adding an antifoaming agent, stirring the solution at a low speed to remove the foams, filtering, and packaging to obtain the organic exhaust gas absorbent.

Description

technical field [0001] The invention relates to an organic waste gas absorbent and a preparation method thereof. Background technique [0002] In the application of coatings, inks and adhesives, a large amount of organic waste gas containing volatile organic compounds (VOCs) is generated. These organic waste gases that are directly released or discharged have caused serious pollution to the atmosphere and have become a hot issue in today's society. There are many kinds of volatile organic compounds, and their properties are also quite different. At present, the main methods for treating waste gas containing VOCs are: adsorption method, absorption method, direct combustion method, regenerative combustion method, catalytic combustion method, rotor adsorption concentration-combustion method, UV photocatalytic degradation method, condensation collection method, etc. [0003] Among them, the combustion method is only suitable for medium and high concentrations, and the equipment...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/14
CPCB01D53/1487B01D53/1493B01D2252/504B01D2257/7027B01D2257/708
Inventor 罗帅涂伟萍
Owner 广东凯凌生态环境科技有限公司