Phosphorus-free corrosion and scale inhibitor

A phosphorus-free corrosion inhibitor and scale inhibitor technology, applied in the field of chemistry, can solve the problems of lake water bloom, sea water red tide damage, excessive microbial algae reproduction, etc., and achieve the effect of reducing treatment costs

Inactive Publication Date: 2009-12-23
SHANGHAI WEILAI ENTERPRISE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, most of the cooling water treatment agents used in open systems are phosphorus-based formulas, but the discharge of phosphorus will cause eutrophication in the surrounding waters, promote the excessive reproduction of microorganisms, especially algae, and cause lake water blooms, seawater red tides and other hazards

Method used

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  • Phosphorus-free corrosion and scale inhibitor

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Embodiment Construction

[0010] The non-phosphorus corrosion and scale inhibitor of the present invention consists of sodium molybdate, zinc salt, citrate, triethanolamine, benzotriazole (BTA), polyaspartic acid (PASP), polyepoxysuccinic acid (PESA) ), acrylic acid sulfonic acid terpolymer, solid alkali and water, wherein the weight percentage of the sodium molybdate in the phosphorus-free corrosion and scale inhibitor is 1.0% to 5.0%, and the zinc salt is in the The weight percentage in the phosphorus corrosion and scale inhibitor is 1.0% to 3.0%, the weight percentage of the citrate in the phosphorus-free corrosion and scale inhibitor is 2.0% to 4.0%, and the triethanolamine is in the phosphorus-free The weight percentage in the corrosion and scale inhibitor is 2.0% to 4.0%, the weight percentage of the benzotriazole (BTA) in the phosphorus-free corrosion and scale inhibitor is 0.5% to 1.0%, and the poly The weight percent of aspartic acid (PASP) in the phosphorus-free corrosion and scale inhibitor ...

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Abstract

The invention relates to a phosphorus-free corrosion and scale inhibitor, which is prepared from sodium molybdate, zinc salt, citrate, triethanolamine, benzotriazole (BTA), polyaspartic acid (PASP), polyepoxysuccinic acid (PESA), AA / AMPS terpolymer, solid alkali and water. The phosphorus-free corrosion and scale inhibitor inhibits corrosion of metals by forming oxidization type and precipitation type films on the surfaces of the metals, has the effect of inhibiting scale through chelation and dispersive action on salts causing scale in cooling water, is non-toxic and phosphorus-free, has easily biodegradable major organic compositions, does not cause environmental pollution and is not limited by phosphorus in emission.

Description

Technical field: [0001] The invention relates to the field of chemistry, in particular to water treatment technology, in particular to a treatment agent for cooling water in an open system, in particular to a phosphorus-free corrosion and scale inhibitor. Background technique: [0002] At present, most of the cooling water treatment agents used in open systems are phosphorus-based formulations, but the discharge of phosphorus will cause eutrophication in the surrounding waters, promote the excessive reproduction of microorganisms, especially algae, and cause lake water blooms, seawater red tides and other hazards . Invention content: [0003] The purpose of the present invention is to provide a non-phosphorus corrosion and scale inhibitor, which will solve the eutrophication of the surrounding waters caused by the phosphorus-based corrosion and scale inhibitors in the prior art. , Microorganisms, especially algae overgrowth, lake water blooms, seawater red tides and other...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/08
Inventor 刘昕诸育德周国平
Owner SHANGHAI WEILAI ENTERPRISE
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