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Acid corrosion inhibitor

A corrosion inhibitor and acidic technology, applied in the chemical industry, can solve problems such as unimaginable consequences

Inactive Publication Date: 2006-01-04
SHANGHAI WANSEN WATER TREATMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The system to be cleaned is often composed of a variety of metals. If the corrosion inhibitor is not selected properly, the consequences will be disastrous

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A kind of acidic corrosion inhibitor of the present invention contains urotropine, thiourea, benzotriazole, mercaptobenzothiazole, sodium silicate, water, wherein the weight percent of each component is:

[0023] Urotropine: 25% to 30%;

[0024] Thiourea: 15% to 20%;

[0025] Benzotriazole: 3% to 6%;

[0026] Mercaptobenzothiazole: 5% to 10%;

[0027] Sodium silicate: 5% to 10%;

[0028] Water: 35%~45%

[0029] Preferably, wherein the weight percent of each component is:

[0030] Herotropine: 29%;

[0031] Thiourea: 20%;

[0032] Benzotriazole: 6%;

[0033] Mercaptobenzothiazole: 5%;

[0034] Sodium silicate: 5%;

[0035] Water: 35%.

[0036] The acidic corrosion inhibitor can be used in central air-conditioning circulating water systems, industrial cooling circulating water systems, and boiler systems. The using method of acid corrosion inhibitor of the present invention is as follows:

[0037] 1. Rinse the system with clean water and turn on the circulatin...

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PUM

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Abstract

The present invention belongs to the field of chemical technology, and discloses one kind of acid corrosion retardant. The acid corrosion retardant contains urotropine, thiourea, benzotriazole, mercaptobezothiazole, sodium silicate and water. The acid corrosion retardant of the present invention is developed based on that some acids and some metals have high corrosion retarding rate.

Description

technical field [0001] The invention belongs to the field of chemical industry and relates to a chemical corrosion inhibitor. More specifically, the invention relates to a corrosion inhibitor used before cleaning metal surfaces. Background technique [0002] Although many existing pickling corrosion inhibitors have good corrosion inhibition effects, most of the effective corrosion inhibitors have a certain degree of specificity, that is, they only inhibit certain types of acids and certain types of metals. corrosion. The system to be cleaned is often composed of a variety of metals. If the corrosion inhibitor is not selected properly, the consequences will be disastrous. [0003] After in-depth research, the present inventor has developed a multi-component corrosion inhibitor, which can inhibit corrosion of various acids and metals, and has a high corrosion inhibition rate. Contents of the invention [0004] The technical problem to be solved by this invention is to prov...

Claims

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Application Information

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IPC IPC(8): C23F11/04C23F11/16C23G1/06
Inventor 沈志昌
Owner SHANGHAI WANSEN WATER TREATMENT CO LTD
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