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A cooling water circulation method

A cooling water and circulating cooling water technology, which is applied in the direction of sterilization/microdynamic water/sewage treatment, etc., can solve the problems of water pollution and large amount of fungicides, and achieve the effects of low dosage, simple method and wide application range

Active Publication Date: 2016-04-27
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using this method to add fungicide, the fungicide will be degraded in the water, the amount of fungicide is large, and it will pollute the water body

Method used

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  • A cooling water circulation method
  • A cooling water circulation method
  • A cooling water circulation method

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0046] The number average molecular weight of 10.0 grams is 1.2×10 4 Add polyvinyl alcohol (containing 12% by weight of acetyl groups) and 20.0 grams of chloroacetic anhydride to 30 grams of methyl ethyl ketone, and react at 80 ° C until the suspension of the entire reaction system becomes a clear solution , the reaction ends. With a concentration of 5% by weight sodium bicarbonate solution 100mL wash the mixture obtained by the reaction twice, the product is separated out, after filtration, the product obtained is added to acetone, then 35.0 grams of N,N-dimethylbenzylamine is added, heated to After 5 hours of reflux reaction, the acetone was evaporated, and then dried to obtain 55.1 g of polymer, which was designated as quaternary ammonium salt J1.

preparation example 2

[0048] The number average molecular weight of 5.0 grams is 2.0×10 4 Add polyvinyl alcohol (containing 12% by weight of acetyl groups) and 30.0 grams of bromoacetic anhydride to 30 grams of methyl ethyl ketone, and react at 80 ° C until the suspension of the entire reaction system becomes a clear solution , the reaction ends. With a concentration of 5% by weight sodium bicarbonate solution 100mL wash the mixture obtained by the reaction twice, the product is separated out, after filtration, the product obtained is added to acetone, then 25.0 grams of N,N-dimethylbutylamine is added, heated to After reflux for 5 hours, the acetone was evaporated, and then dried to obtain 53.2 g of polymer, which was designated as quaternary ammonium salt J2.

preparation example 3

[0050] The number average molecular weight of 5.0 grams is 1.8×10 4 Add polyvinyl alcohol (containing 12% by weight of acetyl groups) and 10.0 grams of chloroacetic anhydride to 20 grams of methyl ethyl ketone, and react at 80 ° C until the suspension of the entire reaction system becomes a clear solution , the reaction ends. After washing the reaction mixture twice with 100 mL of 5% by weight sodium bicarbonate solution, the product precipitated out. After filtration, the obtained product was added to acetone, and then 25.0 grams of triethylamine was added, heated to reflux for 5 hours and then evaporated. Acetone was removed, and then by drying, 51.8 g of polymer was obtained, which was designated as quaternary ammonium salt J3.

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Abstract

The invention relates to a circulation method of cooling water. The method comprises steps: part of circulating cooling water flowing out from a water collection tank (1) as cooling water is conveyed into a heat exchanger (2), heat exchange is carried out, and the cooling water after heat exchange is cooled through a cooling device (3) and backs to the water collection tank (1). The circulating cooling water system also comprises a bypass tank (4) communicated with the water collection tank (1). The bypass tank (4) is loaded with water insoluble bactericides. The method also comprises steps: the other part of circulating cooling water flowing out from the water collection tank (1) through the bypass tank (4) goes through the bypass tank (4) and contacts the water insoluble bactericides in the bypass tank (4) and backs to the water collection tank (1). Through the method, most microorganisms are removed without affecting normal running of the cooling water system and the filtration function can be achieved at the same time.

Description

technical field [0001] The invention relates to a cooling water circulation method. Background technique [0002] With the development of the world economy and society, the problem of water resources is becoming more and more serious, and solving the problem of water resource shortage has become a common topic worldwide. In order to achieve sustainable economic development, the treatment and recycling of industrial water is necessary. The pollution of industrial circulating water system is mainly caused by microorganisms. On the one hand, microorganisms cause direct pollution of water bodies; on the other hand, microorganisms in industrial circulating water bring great harm to equipment. It produces a large amount of slime, which causes corrosion in circulating water, and the slime covers the metal to generate oxygen concentration difference. The battery is corroded, the iron is dissolved, and the accumulation of slime produces scaling that hinders heat conduction and seri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/50
Inventor 武陈商宜美楼琼慧胡艳华郦和生
Owner CHINA PETROLEUM & CHEM CORP
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