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Low-phosphorus efficient scale and corrosion inhibitor for circulating water treatment, and preparation method thereof

A scale and corrosion inhibitor, circulating water technology, applied in water/sludge/sewage treatment, chemical instruments and methods, complexes/solubilizer treatment, etc., can solve the problem of high phosphorus content, achieve low phosphorus content, reduce The pressure of phosphorus removal, the effect of simple and convenient preparation method

Inactive Publication Date: 2018-03-09
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It overcomes the factors that the current circulating water treatment formula contains high phosphorus, which causes the eutrophication of the water body

Method used

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  • Low-phosphorus efficient scale and corrosion inhibitor for circulating water treatment, and preparation method thereof
  • Low-phosphorus efficient scale and corrosion inhibitor for circulating water treatment, and preparation method thereof
  • Low-phosphorus efficient scale and corrosion inhibitor for circulating water treatment, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Corrosion and scale inhibitor A consists of the following raw materials in parts by weight:

[0044]

[0045] Corrosion and scale inhibitor B consists of the following raw materials in parts by weight:

[0046] Acrylic acid / 2-acrylamide-2-methylpropenesulfonic acid copolymer ((AA / AMPS) 10 parts

[0047]

[0048] The dosing concentrations of A and B are 30mg / L and 60mg / L respectively, and the corrosion rate of the carbon steel coupon is 0.0336mm / a.

Embodiment 2

[0050] Corrosion and scale inhibitor A consists of the following raw materials in parts by weight:

[0051]

[0052] Corrosion and scale inhibitor B consists of the following raw materials in parts by weight:

[0053]

[0054] The dosage concentrations of A and B are 40mg / L and 80mg / L respectively, and the corrosion rate of carbon steel coupons is 0.0288m / a.

Embodiment 3

[0056] Corrosion and scale inhibitor A consists of the following raw materials in parts by weight:

[0057]

[0058] Corrosion and scale inhibitor B consists of the following raw materials in parts by weight:

[0059]

[0060] The dosage concentrations of A and B are 50mg / L and 100mg / L respectively, and the corrosion rate of carbon steel coupons is 0.0162m / a.

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Abstract

The invention relates to a low-phosphorus efficient scale and corrosion inhibitor for circulating water treatment, and a preparation method thereof, and belongs to the technical field of circulating cooling water treatment. The low-phosphorus efficient scale and corrosion inhibitor for circulating water treatment is prepared by compounding a scale and a corrosion inhibitor A and a scale and a corrosion inhibitor B according to the weight ratio of 1:1 to 1:5, wherein the scale and corrosion inhibitor A is prepared by mixing polyepoxysuccinic acid, sodium gluconate, an imidazoline type corrosioninhibitor and water; and the scale and corrosion inhibitor B is prepared by mixing hydrolytic polymaleic anhydride, an acrylic acid / 2-acrylamide-2-methallyl sulfonate copolymer, 2-phosphonic acid butane-1,2,4-tricarboxylic acid, zinc salt and water. The low-phosphorus efficient scale and corrosion inhibitor for circulating water treatment has low phosphorus content and high calcium and alkali tolerance, can resist corrosion of high-concentration Cl<-> and SO4<2->, and has good corrosion and scale inhibition effects; meanwhile, the invention provides a simple, convenient and rapid preparationmethod.

Description

technical field [0001] The invention relates to a low-phosphorus high-efficiency scale and corrosion inhibitor for circulating water treatment and a preparation method thereof, belonging to the technical field of circulating cooling water treatment. Background technique [0002] In order to solve the corrosion and scaling problems of the circulating water system, industrial enterprises at home and abroad adopt the method of continuously adding water treatment chemicals to ensure the safe and stable operation of the production equipment. With the progress of society and the concern of human beings to the living environment, the development of circulating water treatment chemicals has also made great progress. [0003] In the 1940s and 1950s, the United States and other countries mainly used chromate and nitrite to inhibit the corrosion of metals. Because of its extremely toxic effect on the human body, it was gradually replaced by polyphosphates and phosphates. In the mid-1...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/08C02F5/12C02F5/10
Inventor 张方银李茂双陈晓培
Owner CHINA PETROLEUM & CHEM CORP
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