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Low-phosphorous environment-friendly composite corrosion and scale inhibitor

A corrosion and scale inhibitor, an environment-friendly technology, applied in the field of low-phosphorus environment-friendly composite corrosion and scale inhibitor, can solve problems such as red tide, and achieve the effects of improving tolerance, improving dispersion ability, and good corrosion inhibition effect.

Inactive Publication Date: 2010-06-23
成都澳贝龙科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Taking the commonly used organic phosphoric acid corrosion and scale inhibitors at home and abroad (such as patents CN1425618, CN1038312 and CN1804123) as an example, phosphorus discharge will cause eutrophication of the surrounding waters and may cause "red tides"

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The present invention will be further described below in conjunction with specific examples.

[0021] Take 3 grams of 2-phosphonic acid butane-1,2,4-tricarboxylic acid, 25 grams of polyaspartic acid, 10 grams of maleic anhydride-acrylic acid copolymer, 10 grams of acrylic acid-2-acrylamide-2-methyl Propanyl sulfonic acid, 10 grams of acrylic acid-acrylic acid ester-phosphonic acid-sulfonate, 2 grams of zinc sulfate heptahydrate and 1.5 grams of benzotriazole were stirred evenly in a reaction ax to obtain a low-phosphorus environment-friendly composite corrosion inhibitor Inhibitor. In the circulating cooling water, keep the concentration of the green composite corrosion and scale inhibitor at 60PPM, and the results are as follows in Table 1:

[0022] Table 1

[0023] Test items

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PUM

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Abstract

The invention discloses a low-phosphorous environment-friendly composite corrosion and scale inhibitor that is used in a circulating cooling water system. The low-phosphorous environment-friendly composite corrosion and scale inhibitor comprises 2-phosphonic butane- 1,2,4 -tricarboxylic acid, plyaspartic acid or polyepoxysuccinic acid, maleic anhydride-acrylic acid copolymer, acrylic acid-2-acrylamide-2-methyl propanesulfonic acid or acrylic acid-acrylate-sulfonate, acrylic acid-acrylate-phosphonic acid-sulfonate quaternary copolymer, zinc salts (zinc sulfate or zinc chloride) or hydroxy benzotriazole. The invention is particularly suitable for the circulating cooling water system with high concentration multiple, which needs to control the phosphorous content (the total phosphorous content is lower than 0.5mg / l) due to environmental pressure.

Description

technical field [0001] The invention relates to a low-phosphorus and environment-friendly composite corrosion and scale inhibitor used in circulating cooling water systems, especially suitable for circulating cooling water with a high concentration ratio of 0.5 mg / l where the total phosphorus content must be controlled due to environmental pressure system. Background technique [0002] In recent years, with the progress of society and the enhancement of people's awareness of environmental protection, the development and application of corrosion and scale inhibitors have attracted more and more attention. Taking the commonly used organic phosphoric acid corrosion and scale inhibitors at home and abroad (such as patents CN1425618, CN1038312 and CN1804123) as an example, phosphorus discharge will cause eutrophication of the surrounding waters and may cause "red tide". In some countries such as Europe, America and Japan, measures to ban phosphorus have been proposed. For exampl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/10
Inventor 江河蒲林陈红
Owner 成都澳贝龙科技发展有限公司
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