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A three-way catalytic complex cleaning solution

A cleaning solution and complexation technology, applied in the direction of surface-active non-soap compounds and cleaning compositions, cationic surface-active compounds, detergent compositions, etc., can solve problems such as water pollution, three-way catalytic secondary poisoning, etc., to avoid Effects of eutrophication, less corrosion of metal materials, and excellent complexation cleaning performance

Active Publication Date: 2020-08-25
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of cleaning agent contains a large amount of phosphorus-containing scale and corrosion inhibitors, which is easy to cause water pollution, and the cleaning residual liquid is likely to cause secondary poisoning of three-way catalysis

Method used

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  • A three-way catalytic complex cleaning solution
  • A three-way catalytic complex cleaning solution
  • A three-way catalytic complex cleaning solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] This embodiment provides a three-way catalytic complexing cleaning solution, specifically: 6% carboxyethyl thiosuccinic acid, 6% citric acid, 4% glucoheptonic acid, 6% hydroxyethyl Ethylenediaminetriacetic acid, 1.5% REWOQUAT CPEM, and the rest of deionized water are mixed to obtain a three-way catalytic converter complex cleaning solution.

[0035] This embodiment also provides a specific method of using the three-way catalytic converter complex cleaning solution: disassemble the exhaust manifold assembly, place it in the cleaning container, and use a syringe to slowly and steadily inject the cleaning solution into the exhaust manifold. Opening, keep injecting for about 20 minutes, slowly inject clean water into the opening of the exhaust manifold, the injection time lasts for about 5 minutes, and the cleaning is completed.

Embodiment 2

[0037] The present embodiment provides a three-way catalytic complexing cleaning solution, specifically: 5% carboxymethylthiosuccinic acid, 3% citric acid, 5% glucoheptonic acid, 4% hydroxyethyl Ethylenediaminetriacetic acid, 1.5% REWOQUAT CPEM, and the rest of deionized water are mixed to obtain a three-way catalytic converter complex cleaning solution.

[0038] This embodiment also provides a specific method for using the three-way catalytic converter complex cleaning liquid: disassemble the exhaust manifold assembly, spray the cleaning agent directly into the three-way catalytic converter of the automobile with an aerosol, and then rinse it with clean water .

Embodiment 3

[0040] The present embodiment provides a three-way catalytic complexing cleaning solution, specifically: 3% carboxyethyl thiosuccinic acid, 2% citric acid, 3% glucoheptonic acid, 3% hydroxyethyl Ethylenediaminetriacetic acid, 1.5% REWOQUAT CPEM, and the rest of deionized water are mixed to obtain a three-way catalytic converter complex cleaning solution.

[0041] This embodiment also provides a specific method for using the three-way catalytic converter complex cleaning solution: disassemble the exhaust manifold assembly, place it in a cleaning container, pour the cleaning agent into the three-way catalytic converter and soak it for 30 minutes, then rinse with clean water rinse.

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Abstract

The invention provides three-way catalytic complexing cleanout fluid which comprises the following components in percentage by weight: 3-8% of sulfur organic carboxylic acid, 5-10% of hydroxy carboxylic acid, 2-6% of hydroxyethyl ethylenediamine triacetic acid, 1-3% of a cationic surfactant and the balance of deionized water. The three-way catalytic complexing cleanout fluid provided by the invention combines acid pickling and complexing cleaning into a whole, has the characteristics of being excellent in cleaning effect and free from corrosion in cleaning process.

Description

technical field [0001] The invention relates to a three-way catalytic complex cleaning solution, in particular to a solution for cleaning three-way catalytic converters of automobiles. The invention has the characteristics of good cleaning effect and no corrosion in the cleaning process, and belongs to the technology of automobile maintenance products field. Background technique [0002] The three-way catalytic converter for automobiles uses the catalysis of precious metals such as Pt (platinum), Rh (rhodium), and Pd (palladium) to convert harmful components of automobile exhaust HC (hydrocarbons), CO (carbon monoxide), and NOx (nitrogen oxides) Catalyzes the reaction to produce CO 2 (carbon dioxide), H 2 O (water), N 2 (Nitrogen) is discharged outside the car, reducing the pollution of the exhaust gas to the environment. After combustion, sulfur, phosphorus, lead, manganese, and zinc compounds in fuel oil and lubricating oil form reversible adsorption and coking at high...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11D10/02C11D1/62C11D3/20C11D3/33C11D3/34C11D3/60
CPCC11D1/62C11D3/2086C11D3/33C11D3/3472
Inventor 冯会良张凯蛟杨兵樊秀菊
Owner CHINA PETROLEUM & CHEM CORP
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