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Defoaming agent and preparation method thereof

A defoamer and emulsifier technology, applied in the field of defoamer and its preparation, can solve the problems of foam, water production rate drop, water production not up to standard, etc.

Active Publication Date: 2021-09-07
深圳市点石源水处理技术有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0002] Common evaporators are vacuum evaporators, MVR evaporators or multi-effect evaporators. The evaporator does not have high requirements for the incoming water. However, if the salt content or COD content in the water quality in the evaporator is too high, it is easy to produce foam, Easy to scale, scaling will affect the heat transfer efficiency, and high foam content will cause the liquid level to rise, affect the water intake, and then lead to a decrease in water production, and the foam will flood the heat transfer device, affecting heat transfer efficiency, which will also lead to production The water rate drops; in addition, the foam will enter the follow-up process with the steam, affecting the amount of acid and alkali, and in severe cases, the produced water will not meet the standard

Method used

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  • Defoaming agent and preparation method thereof
  • Defoaming agent and preparation method thereof
  • Defoaming agent and preparation method thereof

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Embodiment 1～7

[0028] The embodiment of defoamer of the present invention, its formula is as shown in table 1, and preparation method is as follows:

[0029] Add octylphenol polyoxyethylene ether phosphate and glycerol triphosphate into a three-necked flask, stir evenly, and react in an oil bath at 80°C for 80 minutes, then add dimethyl phosphosulfamic acid, allyl polyether, and water A, Add potassium hydroxide to adjust the pH to between 6 and 9, then increase the temperature to 105° C., and react for 40 minutes. Then add the higher carbon alcohol mixture and water B into the three-necked flask, stir evenly, add Tween 60, Span 80, and liquid paraffin, continue stirring, and react for 45 minutes to obtain the defoamer.

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Abstract

The invention discloses a defoaming agent and a preparation method thereof, and relates to the technical field of defoaming agents. The defoaming agent comprises the following components in parts by weight: 5-15 parts of an emulsifier, 15-25 parts of a high alcohol mixture, 5-15 parts of a dispersing agent, 3-10 parts of a scale inhibitor and 8-20 parts of polyether, wherein the emulsifier comprises Tween 60, Span 80 and liquid paraffin. The defoaming agent prepared by the formula has good defoaming, foam inhibition, dispersion and scale inhibition performances, has a boiling point higher than that of water, and cannot overflow along with water vapor.

Description

technical field [0001] The invention relates to the technical field of defoamers, in particular to a defoamer and a preparation method thereof. Background technique [0002] Common evaporators are vacuum evaporators, MVR evaporators or multi-effect evaporators. The evaporator does not have high requirements for the incoming water. However, if the salt content or COD content in the water quality in the evaporator is too high, it is easy to produce foam, Easy to scale, scaling will affect the heat transfer efficiency, and high foam content will cause the liquid level to rise, affect the water intake, and then lead to a decrease in water production, and the foam will flood the heat transfer device, affecting heat transfer efficiency, which will also lead to production The water rate drops; in addition, the foam will enter the subsequent process with the steam, affecting the amount of acid and alkali, and in severe cases, the produced water will not meet the standard. Contents...

Claims

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Application Information

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IPC IPC(8): B01D19/04
CPCB01D19/0495B01D19/0404B01D19/0422
Inventor 吴春丽石宗武
Owner 深圳市点石源水处理技术有限公司
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