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Composite corrosion and scale inhibitor containing benzotriazole

A technology of benzotriazole and corrosion and scale inhibitor, which is applied in the field of high-efficiency and environment-friendly corrosion and scale inhibitor, can solve problems such as energy consumption, resource consumption, economic loss, etc., and achieves low equipment investment, increased coverage, Simple preparation process

Active Publication Date: 2011-08-17
WUHAN UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It brings huge economic losses to people, causes catastrophic accidents, consumes precious energy and resources

Method used

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  • Composite corrosion and scale inhibitor containing benzotriazole

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] To prepare a composite corrosion and scale inhibitor containing benzotriazole, the materials are taken according to the following mass percentages: hydrolyzed polymaleic acid or styrene maleic acid 20% to 25%, acrylic acid-2-acrylamide-2- Methylpropanesulfonic acid 12%-18%, zinc nitrate or zinc sulfate 10%-15%, D-sodium gluconate or potassium gluconate 15%-20%, sulfamic acid 1%-2%, benzotriazepam 0.5% to 1% azole, the rest is distilled water; then distilled water, hydrolyzed polymaleic acid or styrene maleic acid, acrylic acid-2-acrylamide-2-methylpropanesulfonic acid, zinc nitrate or zinc sulfate, D- Add sodium gluconate or potassium gluconate, sulfamic acid and benzotriazole into the container in sequence according to the above, and stir at room temperature for 1 hour to obtain the product.

Embodiment 2

[0032] Prepare 100g of benzotriazole-containing composite corrosion and scale inhibitors, preparation process: get 50% hydrolyzed polymaleic acid 21g, 30% acrylic acid-2-acrylamide-2-methylpropanesulfonic acid 16g, Zn( NO 3 ) 2 .6H 2 O 14g, D-sodium gluconate 16, sulfamic acid 1.8g, benzotriazole 0.5g, and the rest are distilled water, which are successively added into a clean and dry beaker and stirred evenly to obtain the product.

Embodiment 3

[0034] Prepare 100g of benzotriazole-containing composite corrosion and scale inhibitors, preparation process: get 50% hydrolyzed polymaleic acid 22g, 30% acrylic acid-2-acrylamide-2-methylpropanesulfonic acid 15g, Zn( NO 3 ) 2 .6H 2 Add 13g of O, 17g of sodium D-gluconate, 1.7g of sulfamic acid, 0.6g of benzotriazole, and the rest in distilled water into a clean and dry beaker, and stir evenly to obtain the product.

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Abstract

The invention discloses a composite corrosion and scale inhibitor containing benzotriazole. The corrosion and scale inhibitor is compounded by a maleic acid compound, an acrylic acid terpolymer, a zinc salt, gluconate, a sulfamate compound and benzotriazole; and the composite corrosion and scale inhibitor containing benzotriazole, which is disclosed by the invention, is widely applied and can be used for corrosion and scale inhibitions of devices made of carbon steel, copper and copper alloys. The composite corrosion and scale inhibitor containing benzotriazole has a full phosphate-free formula so that the treated exterior drainage causes no eutrophication pollution to a water body due to phosphorus, and belongs to an environment friendly product; moreover, the composite corrosion and scale inhibitor has the advantages of no need of prefilming equipment before used, operation availability at a normal temperature, stable treatment effect, annual corrosion rate of lower than 0.0240 mm.a-1 to the carbon steel, calcium carbonate resistance rate of more than 98.2%, and very good corrosion and scale inhibiting effect and economic and environmental benefits.

Description

technical field [0001] The invention relates to a phosphorus-free, biodegradable, high-efficiency, environment-friendly corrosion and scale inhibitor for industrial circulating cooling water treatment systems, in particular to a benzotriazole-containing composite corrosion and scale inhibitor. Background technique [0002] The economic loss caused by metal corrosion to the development of the national economy accounts for about 1.5-4.2% of the national economic output value. Metal corrosion problems pervade all fields of the national economy, from daily life to industrial and agricultural production, from cutting-edge technology to national defense industry , wherever metal materials are used, corrosion problems exist to varying degrees. It brings huge economic losses to people, causes catastrophic accidents, and consumes precious energy and resources. In order to minimize the loss caused by corrosion, corrosion researchers have developed and developed many anti-corrosion me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/12
Inventor 曾德芳张伟张正亮张旭鸿
Owner WUHAN UNIV OF TECH
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