Green compound corrosion and scale inhibitor

A corrosion and scale inhibitor, green technology, applied in the field of scale inhibitors, can solve problems such as red tide, and achieve 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 and CN1038312) as an example, phosphorus discharge will cause eutrophication in the surrounding waters and may cause "red tides"

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment

[0020] Take 10 sodium humate, 4 grams of starch, 30 grams of polyaspartic acid, 30 grams of maleic anhydride-acrylic acid copolymer, 20 grams of acrylic acid-2-acrylamide-2-methylpropanesulfonic acid, 4 grams of sulfuric acid heptahydrate Zinc and 2 g of tolyltriazole were stirred evenly in a reaction ax to prepare a green composite corrosion and scale inhibitor. In the circulating cooling water, keep the concentration of the green composite corrosion and scale inhibitor at 50PPM, and the results are as follows in Table 1:

[0021] Table 1

[0022] Test items

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PUM

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Abstract

The invention discloses a green compound corrosion and scale inhibitor used in a circulating cooling water system. The green compound corrosion and scale inhibitor comprises sodium humate, starch, polyaspartic acid or polyepoxysuccinic acid, maleic anhydride-acrylic acid copolymer, acrylic acid-2-acrylamide-2-methylpropanesulfonic acid or acrylic acid-acrylate-sulfonate, zinc salt (zinc sulfate or zinc chloride) and tdlyltriazole. The green compound corrosion and scale inhibitor not only solves the problems that the frequently-used organic phosphate type corrosion and scale inhibitor used in the circulating cooling water system easily causes eutrophication of surrounding waters due to the phosphorus discharge to further lead to red tide, environmental pollution and the like, but also achieves the same high scale-preventing rate and corrosion inhibiting efficiency of the organic phosphate type corrosion and scale inhibitor.

Description

technical field [0001] The invention relates to a scale inhibitor used in a circulating cooling water system, in particular to a green composite corrosion and scale inhibitor, which is especially suitable for a circulating cooling water system where phosphorus discharge is prohibited due to environmental pressure. 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 and CN1038312) as an example, phosphorus discharge will cause eutrophication in 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 example, Germany requires phosphorus discharge to be ≤1mg / L. ...

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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