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Environment-friendly hydrochloric acid cleaning corrosion inhibition fog inhibitor

A hydrochloric acid cleaning and anti-fog agent technology, which is applied in the field of hydrochloric acid cleaning corrosion and anti-fog agents, can solve the problems of only about 45% and achieve the effect of improving the effect of anti-fog, reducing the amount of hydrogen evolution, and reducing the amount of acid mist

Inactive Publication Date: 2017-06-20
刘雄杰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] When polyaspartic acid is used alone, the corrosion inhibition effect can obviously reach 90%, but the anti-fog effect can only reach about 45%. Only 20-40%, but the anti-fog effect can reach 70-83%

Method used

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  • Environment-friendly hydrochloric acid cleaning corrosion inhibition fog inhibitor
  • Environment-friendly hydrochloric acid cleaning corrosion inhibition fog inhibitor
  • Environment-friendly hydrochloric acid cleaning corrosion inhibition fog inhibitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Add 79.8% deionized water into the reaction kettle by weight percentage, stir, add 20% polyaspartic acid and 0.2% dodecylphenol polyoxyethylene ether in turn, mix well, let stand for half an hour, etc. When the foam is reduced, the environment-friendly hydrochloric acid cleaning corrosion inhibitor and fog inhibitor of the present invention can be obtained.

Embodiment 2

[0023] Add 69.7% deionized water into the reaction kettle by weight percentage, stir, add 30% polyaspartic acid and 0.3% dodecylphenol polyoxyethylene ether in turn, mix well, let stand for half an hour, etc. When the foam is reduced, the environment-friendly hydrochloric acid cleaning corrosion inhibitor and fog inhibitor of the present invention can be obtained.

Embodiment 3

[0025] Add 59.6% deionized water into the reaction kettle by weight percentage, stir, add 40% polyaspartic acid and 0.4% dodecylphenol polyoxyethylene ether in turn, mix well, let stand for half an hour, etc. When the foam is reduced, the environment-friendly hydrochloric acid cleaning corrosion inhibitor and fog inhibitor of the present invention can be obtained.

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Abstract

The invention discloses an environment-friendly hydrochloric acid cleaning corrosion inhibition fog inhibitor which consists of polyaspartic acid, dodecane phenol plyoxyethylene and deionized water. With the adoption of dodecane phenol plyoxyethylene and polyaspartic acid for compounding, a grey film formed on the surface of carbon steel by the prepared environment-friendly hydrochloric acid cleaning corrosion inhibition fog inhibitor is distributed compactly, is uniform and thick, and is smoother and more complete than an adsorption film formed when dodecane phenol plyoxyethylene or polyaspartic acid independently acts as a corrosion inhibitor, and the corrosion to steel is prevented. After polyaspartic acid and dodecane phenol plyoxyethylene are compounded, an obvious synergistic effect in inhibiting acid frog is exerted, the fog inhibition effect is improved significantly, and both the slow release effect and the fog inhibition effect can reach 95-97.5%.

Description

technical field [0001] The invention relates to a metal surface treatment additive, in particular to a hydrochloric acid cleaning corrosion and fog inhibitor used in the process of cleaning carbon steel with hydrochloric acid. Background technique [0002] Carbon steel is easy to rust, and the rust on its surface needs to be removed before processing and use. The most commonly used method in industry is to use hydrochloric acid as a rust remover to dissolve and remove rust. This method has the lowest cost and is easy to operate. The application fields of chemical pickling are also becoming more and more extensive. However, pickling and surface treatment of metals are heavily polluting industries. During the process of pickling and rust removal, a large amount of pickling waste liquid, acid mist, and "over-pickling" phenomenon are very prominent. The waste liquid and acid mist produced seriously affect the pollution of the environment. The pickling waste liquid has been reg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G1/06C23G1/08
CPCC23G1/068C23G1/088
Inventor 刘雄杰
Owner 刘雄杰
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