High efficiency scale and corrosion inhibitor for treating industrial circulating cooling water

A technology of circulating cooling water and scale and corrosion inhibitor, applied in the field of scale and corrosion inhibitor, can solve the problems of high corrosion rate of stainless steel, affecting service life, low scale inhibition rate, etc., achieving good corrosion inhibition performance, preventing scale, good preservation effect

Inactive Publication Date: 2017-02-22
仙桃市信达化工有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of high-efficiency scale and corrosion inhibitor for treating industrial circulating cooling water, so as to solve the problem that the circulating water with electrical conductivity greater than 10000μs / cm is less effective and the scale inhibition rate is lower. , the corrosion rate of stainless steel, brass and Q235 carbon steel is high, which affects the service life

Method used

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  • High efficiency scale and corrosion inhibitor for treating industrial circulating cooling water

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Embodiment 1

[0015] A high-efficiency scale and corrosion inhibitor for treating industrial circulating cooling water, comprising the following raw materials in proportions by weight: 9 parts of 2-phosphonic acid butane-1,2,4-tricarboxylic acid, polyamino polyether 9 parts of methylene phosphonic acid, 10 parts of hydroxyethylidene diphosphonic acid, 10 parts of diethylene triamine pentamethylene phosphonic acid, 6-8 parts of 2-hydroxyphosphonoacetic acid, acrylic acid-hydroxypropyl acrylate-AMPS 7 parts of terpolymer, 7 parts of hydrolyzed polymaleic anhydride, 11 parts of zinc sulfate heptahydrate and 1 part of tolyl benzotriazole, polyamino polyether group methylene phosphonic acid is very good in circulating cooling water Excellent calcium tolerance, strong anti-scaling ability to calcium carbonate and calcium sulfate, and can well stabilize iron, zinc, manganese sulfide, also very effective for silicon and silicate, acrylic acid-hydroxypropyl acrylate The copolymer has a good inhibito...

Embodiment 2

[0018] A high-efficiency scale and corrosion inhibitor for treating industrial circulating cooling water, comprising the following raw materials in proportions by weight: 10 parts of 2-phosphonic acid butane-1,2,4-tricarboxylic acid, polyamino polyether 10 parts of methylene phosphonic acid, 10 parts of hydroxyethylidene diphosphonic acid, 10 parts of diethylene triamine pentamethylene phosphonic acid, 8 parts of 2-hydroxyphosphonoacetic acid, acrylic acid-hydroxypropyl acrylate-AMPS ternary 8 parts of copolymer, 8 parts of hydrolyzed polymaleic anhydride, 12 parts of zinc sulfate heptahydrate and 2 parts of methyl benzotriazole, polyamino polyether group methylene phosphonic acid has good calcium content in circulating cooling water Tolerance, has strong scale inhibition ability to calcium carbonate and calcium sulfate, and can well stabilize iron, zinc, manganese sulfide, and is also very effective for silicon and silicate, acrylic acid-hydroxypropyl acrylate copolymer It ha...

Embodiment 3

[0021] A high-efficiency scale and corrosion inhibitor for treating industrial circulating cooling water, comprising the following raw materials in proportions by weight: 8 parts of 2-phosphonic acid butane-1,2,4-tricarboxylic acid, polyamino polyether 8 parts of methylene phosphonic acid, 8 parts of hydroxyethylidene diphosphonic acid, 8 parts of diethylenetriaminepentamethylene phosphonic acid, 6 parts of 2-hydroxyphosphonoacetic acid, acrylic acid-hydroxypropyl acrylate-AMPS ternary 6 parts of copolymer, 6 parts of hydrolyzed polymaleic anhydride, 10 parts of zinc sulfate heptahydrate and 1 part of methyl benzotriazole, polyamino polyether group methylene phosphonic acid has good calcium content in circulating cooling water Tolerance, strong anti-scale ability to calcium carbonate and calcium sulfate, and can stabilize iron, zinc, manganese sulfide, also very effective to silicon and silicate, acrylic acid-hydroxypropyl acrylate copolymer It has a good inhibitory effect on ...

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Abstract

The invention discloses a high efficiency scale and corrosion inhibitor for treating industrial circulating cooling water. The high efficiency scale and corrosion inhibitor comprises, by weight, 8-10 parts of 2-phosphonic butane-1, 2, 4-tricarboxylic acid, 8-10 parts of polyamino polyether methylene phosphonates, 8-10 parts of etidronic acid, 8-10 parts of DTPMPA, 6-8 parts of 2-hydroxyphosphonoacetic acid, 6-8 parts of acrylic-HPA-AMPS terpolymer, 6-8 parts of hydrolyzed polymaleic anhydride, 10-12 parts of zinc sulfate heptahydrate, and 1-2 parts of methylbenzotriazole. The corrosion rate of stainless steel and brass is not more than 0.0006mm/a, which is far superior to the standard of 0.005 mm/a, and the scale inhibition rate is up to 98%. The inhibitor has excellent scale inhibition and corrosion resistance, and also has the effect in dispersing water-contained oxides and organic scale in poor-quality water. It also can effectively prevent formation of scale, and microbial clay, and thus has a good scale effect and a significant solubility limit effect.

Description

technical field [0001] The invention relates to the technical field of scale and corrosion inhibitors, in particular to a high-efficiency scale and corrosion inhibitor for treating industrial circulating cooling water. Background technique [0002] Human beings have used water treatment methods for many years. Physical methods include the use of various filter materials with different pore sizes, and the use of adsorption or barrier methods to exclude impurities in water. The most important adsorption method is to use activated carbon for adsorption. The barrier method is to pass water through the filter material, so that the larger impurities cannot pass through, and then obtain cleaner water. In addition, the physical method also includes the sedimentation method, which is to let the impurities with a smaller specific gravity float on the water surface to remove them, or Impurities with larger specific gravity are deposited below, and then obtained, while chemical methods ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/14C02F5/10C02F5/08
CPCC02F5/145C02F5/105C02F2103/023C02F2303/08
Inventor 张正亮潘浩张旭鸿谢远枝
Owner 仙桃市信达化工有限责任公司
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