CN107881037B - Ternary catalytic complexing cleaning fluid - Google Patents
Ternary catalytic complexing cleaning fluid Download PDFInfo
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- CN107881037B CN107881037B CN201610875850.5A CN201610875850A CN107881037B CN 107881037 B CN107881037 B CN 107881037B CN 201610875850 A CN201610875850 A CN 201610875850A CN 107881037 B CN107881037 B CN 107881037B
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- acid
- cleaning
- cleaning solution
- complexing
- complexing cleaning
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/38—Cationic compounds
- C11D1/62—Quaternary ammonium compounds
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/20—Organic compounds containing oxygen
- C11D3/2075—Carboxylic acids-salts thereof
- C11D3/2086—Hydroxy carboxylic acids-salts thereof
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/26—Organic compounds containing nitrogen
- C11D3/33—Amino carboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/34—Organic compounds containing sulfur
- C11D3/3472—Organic compounds containing sulfur additionally containing -COOH groups or derivatives thereof
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Detergent Compositions (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention provides a ternary catalytic complexing cleaning fluid which comprises the following components in percentage by weight: 3-8% of sulfur-containing organic carboxylic acid, 5-10% of hydroxycarboxylic acid, 2-6% of hydroxyethyl ethylenediamine triacetic acid, 1-3% of cationic surfactant and the balance of deionized water. The ternary catalytic complexing cleaning solution provided by the invention combines acid washing and complexing cleaning into a whole, and has the characteristics of good cleaning effect and no corrosion in the cleaning process.
Description
Technical Field
The invention relates to a three-way catalytic complexing cleaning solution, in particular to a solution for cleaning a three-way catalytic converter of an automobile.
Background
The three-way catalyst for automobile is prepared by catalytic reaction of harmful components HC (hydrocarbon), CO (carbon monoxide) and NOx (nitrogen oxide) in automobile exhaust to generate CO by using catalytic action of noble metal such as Pt (platinum), Rh (rhodium) and Pd (palladium)2(carbon dioxide), H2O (water), N2The nitrogen is discharged out of the vehicle, so that the pollution of the tail gas to the environment is reduced. After sulfur, phosphorus, lead, manganese and zinc compounds in fuel oil and lubricating oil are combusted, reversible adsorption and coking are formed at high temperature, chemical complexes are formed on the surface of an oxygen sensor and inside a three-way catalyst and cover the surface of a noble metal catalyst, oxidation and reduction reactions of harmful components in exhaust gas are prevented, and the three-way catalyst is subjected to chemical poisoning failure, so that the problems of over-standard tail gas, unsmooth exhaust, power reduction, oil consumption increase and the like are caused. The ternary catalytic cleaning agent can effectively activate the ternary catalytic device, greatly reduce the emission of automobile exhaust and recover the original power of the automobile.
The Chinese application CN103756806A discloses a three-way catalyst cleaning agent and a preparation method thereof, which comprises the following components in percentage by weight: 3-8% of tartaric acid, 5-10% of citric acid, 8-18% of glacial acetic acid, 3-6% of malic acid, 10-50% of scale and corrosion inhibitor, 0.06-0.2% of EDTA and 15-50% of deionized water. The cleaning agent contains a large amount of phosphorus-containing scale and corrosion inhibitors, water pollution is easy to cause, and cleaning residual liquid is easy to cause secondary poisoning of three-way catalysis.
Therefore, the development of an environment-friendly and efficient cleaning solution for cleaning the three-way catalyst of the automobile is needed.
Disclosure of Invention
Compared with the common acid washing technology, the cleaning agent adopts organic acid with metal ion complexing effect as the cleaning agent, combines acid washing and complexing cleaning into a whole, and has the characteristics of good cleaning effect and no corrosion in the cleaning process.
In order to realize the purpose of the invention, the invention provides a three-way catalytic complexing cleaning solution, which comprises the following components in percentage by weight:
wherein the sulfur-containing organic carboxylic acid (compound) is a compound having (R)1)(-S-R2) One or mixture of sulfur-containing organic carboxylic acid compounds of CHCOOH structure, R1And R2Are respectively selected from substituent groups H, OH, COOH, C1-C10 alkyl, aromatic ring, heterocycle, or the group formed by the combination of the substituent groups.
Wherein "the group of each substituent composition" means a group obtained by combining H, OH, COOH, C1-C10 alkyl, aromatic ring, and heterocycle with each other, such as p-tolyl, p-hydroxyphenyl, 2-hydroxypropyl, carboxymethyl, and carboxyethyl.
Preferably, the sulfur-containing organic carboxylic acid is one or more of thioglycolic acid, (ethylthio) acetic acid, thiopheneacetic acid, 4-pyridinethioglycolic acid, thiodiglycolic acid, 2-mercaptopropionic acid, mercaptosuccinic acid, 2, 3-dimercaptosuccinic acid, carboxymethylthiosuccinic acid and carboxyethylthiosuccinic acid.
More preferably, the sulfur-containing organic carboxylic acid is carboxymethylthiosuccinic acid and/or carboxyethylthiosuccinic acid. The content of the sulfur-containing organic carboxylic acid in the cleaning solution is 3-8%, preferably 3-6%. The sulfur-containing organic carboxylic acid has excellent dispersing and emulsifying cleaning functions, and is a multifunctional cleaning agent integrating pickling, chelating, dispersing and cleaning.
Wherein the hydroxycarboxylic acid (compound) is one or more of lactic acid, malic acid, citric acid, tartaric acid, salicylic acid, gluconic acid and glucoheptonic acid.
Preferably, the hydroxycarboxylic acid is a mixture of citric acid and glucoheptonic acid.
More preferably, the hydroxycarboxylic acid is a mixture of citric acid and glucoheptonic acid in a mass ratio of 3:2 to 3: 5.
The content of the hydroxycarboxylic acid in the cleaning solution is 5-10%, preferably 5-8%.
The hydroxycarboxylic acid can generate coordination with iron ions to dissolve iron oxides, and has the advantages of good cleaning effect, small corrosion to equipment metal materials and the like.
Wherein, the content of the hydroxyethyl ethylene diamine triacetic acid in the cleaning solution is 3-6%, preferably 3-4%. The hydroxyethyl ethylene diamine triacetic acid has excellent chelating performance, has a synergistic effect with hydroxycarboxylic acid, and further enhances the complexing cleaning capacity of the cleaning agent. The cationic surfactant of the present invention is preferably REWOQUAT CPEM. The cationic surfactant REWOQUAT CPEM is available from Wiegmann Sodeslag. The content of the cationic surfactant in the cleaning solution is 1-3%, preferably 1.5-3%.
As a preferred technical scheme, the three-way catalytic complexing cleaning solution comprises the following components in percentage by weight:
wherein the hydroxycarboxylic acid is a mixture of citric acid and glucoheptonic acid in a ratio of 3:2-3: 5.
More preferably, the three-way catalytic complexing cleaning solution comprises the following components in percentage by weight:
wherein the hydroxycarboxylic acid is a mixture of citric acid and glucoheptonic acid in a ratio of 3:2-3: 5.
The ternary catalytic complexing cleaning fluid can be prepared by adopting a conventional method in the field, and can be prepared by mixing the components according to a ratio and uniformly stirring.
The invention also provides a specific use method of the three-way catalyst complexing cleaning solution, which comprises the following steps: and disassembling the exhaust manifold assembly, cleaning by complexing cleaning fluid of the three-way catalyst, and then washing by using clear water to finish cleaning.
Compared with the prior art, the ternary catalytic complexing cleaning fluid has the following advantages and effects:
1. the organic acid with a chelating function is used as a cleaning component, so that the cleaning agent has excellent acid cleaning performance and complexing cleaning performance, and can effectively remove sulfur-phosphorus complexes and carbon deposition compounds in three-way catalysis;
2. the cleaning components adopted by the invention have good water solubility, and the product has excellent stability;
3. the cationic surfactant is added to enhance the permeability and stripping performance of the complexing cleaning solution, and the cationic surfactant is compounded with the organic acid to ensure that the product has excellent metal corrosion inhibition performance, so that the corrosion of the catalyst carrier and the noble metal in the catalyst can be avoided without additionally adding a corrosion inhibitor;
4. the invention does not contain phosphorus, avoids eutrophication of water and secondary pollution to the three-way catalytic system, and is safe and environment-friendly.
Detailed Description
The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention. The raw materials of the present example are conventional commercial products, for example, carboxyethylthiosuccinic acid is available from Shanghai Haichi petrochemical company, Ltd; carboxymethylthiosuccinic acid is available from Rinshi technologies, Inc.; mercaptosuccinic acid is available from golden mosaic chemical, Inc., Shanghai; the 4-pyridinemercaptoacetic acid can be purchased from Shanghai Hongshun Biotech limited; citric acid and glucoheptonic acid are available from Hangzhou Ruiyingji Biotech, Inc.; malic acid, tartaric acid, lactic acid are available from chemical agents of national drug group, ltd; hydroxyethylethylenediaminetriacetic acid is commercially available from Kyowa Denhou chemical Co., Ltd; REWOQUAT CPEM is available from the winning creative Texas corporation.
Example 1
The embodiment provides a three-way catalytic complexing cleaning solution, which specifically comprises the following components: 6 percent of carboxyethyl sulfo-succinic acid, 6 percent of citric acid, 4 percent of glucoheptonic acid, 6 percent of hydroxyethyl ethylene diamine triacetic acid, 1.5 percent of REWOQUAT CPEM and the balance of deionized water are mixed to obtain the three-way catalyst complexing cleaning fluid.
The embodiment also provides a specific use method of the three-way catalyst complexing cleaning solution, which comprises the following steps: the exhaust manifold assembly is disassembled, placed in a cleaning container, and the cleaning solution is slowly and smoothly injected into the opening of the exhaust manifold by using an injector for about 20 minutes, and the clean water is slowly injected into the opening of the exhaust manifold for about 5 minutes, so that the cleaning is finished.
Example 2
The embodiment provides a three-way catalytic complexing cleaning solution, which specifically comprises the following components: 5 percent of carboxymethyl sulfo-succinic acid, 3 percent of citric acid, 5 percent of glucoheptonic acid, 4 percent of hydroxyethyl ethylenediamine triacetic acid, 1.5 percent of REWOQUAT CPEM and the balance of deionized water are mixed to obtain the three-way catalyst complexing cleaning fluid.
The embodiment also provides a specific use method of the three-way catalyst complexing cleaning solution, which comprises the following steps: and (3) disassembling the exhaust manifold assembly, directly spraying the cleaning agent to the automobile three-way catalyst by using an atomizer, and then washing by using clean water.
Example 3
The embodiment provides a three-way catalytic complexing cleaning solution, which specifically comprises the following components: mixing 3% of carboxyethyl sulfo-succinic acid, 2% of citric acid, 3% of glucoheptonic acid, 3% of hydroxyethyl ethylenediamine triacetic acid, 1.5% of REWOQUAT CPEM and the balance of deionized water in percentage by weight to obtain the three-way catalyst complexing cleaning solution.
The embodiment also provides a specific use method of the three-way catalyst complexing cleaning solution, which comprises the following steps: and disassembling the exhaust manifold assembly, placing the exhaust manifold assembly in a cleaning container, pouring the cleaning agent into the three-way catalyst, soaking for 30 minutes, and then washing with clean water.
Example 4
The embodiment provides a three-way catalytic complexing cleaning solution, which specifically comprises the following components: 6 percent of carboxymethyl sulfo-succinic acid, 6 percent of citric acid, 2 percent of glucoheptonic acid, 6 percent of hydroxyethyl ethylenediamine triacetic acid, 1 percent of REWOQUAT CPEM and the balance of deionized water are mixed to obtain the three-way catalyst complexing cleaning fluid.
Example 5
The embodiment provides a three-way catalytic complexing cleaning solution, which specifically comprises the following components: 5 percent of mercaptosuccinic acid, 3 percent of lactic acid, 5 percent of tartaric acid, 4 percent of hydroxyethyl ethylenediamine triacetic acid, 1.5 percent of REWOQUAT CPEM and the balance of deionized water are mixed to obtain the three-way catalyst complexing cleaning fluid.
Example 6
The embodiment provides a three-way catalytic complexing cleaning solution, which specifically comprises the following components: mixing 8% of 4-pyridinemercaptoacetic acid, 2% of malic acid, 3% of citric acid, 6% of hydroxyethyl ethylenediamine triacetic acid, 3% of REWOQUAT CPEM and the balance of deionized water by weight percent to obtain the three-way catalyst complexing cleaning solution.
Experimental example 1 stability test
The product is placed in a refrigeration device at the temperature of (0 +/-2) DEG C for 24 hours at a constant temperature, and is taken out and then returned to the room temperature, no precipitation occurs in the embodiments 1-6, which shows that the product has good high-temperature stability, and the product is placed in a refrigeration device at the temperature of (0 +/-2) DEG C for 24 hours and is taken out and then returned to the room temperature, and no layering occurs in the embodiments 1-6, which shows that the product has excellent low-temperature stability.
Experimental example 2 Effect experiment
The European 4-carrier three-way catalyst of Audi A62.0T is cleaned by using the product and the using method in the embodiment 1, and the national emission standards are HC0.1, CO1.0 and NOx0.08. Tests show that the cleaning agent can not meet the national standard requirements by discharging HC0.12, CO1.02 and NOx0.12 before cleaning, and the cleaned tail gas can discharge HC0.02, CO0.08 and NOx0.04 and completely meet the national standard requirements, so that the cleaning agent has a good cleaning effect and effectively activates a three-way catalytic device.
The cleaning agent disclosed by the embodiments 2-6 of the invention can achieve ideal cleaning effect by repeating the experiment.
Although the invention has been described in detail hereinabove with respect to a general description and specific embodiments thereof, it will be apparent to those skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (3)
1. The three-way catalytic complexing cleaning fluid is characterized by comprising the following components in percentage by weight:
the sulfur-containing organic carboxylic acid is carboxymethyl sulfo-succinic acid and/or carboxyethyl sulfo-succinic acid;
the hydroxycarboxylic acid is a mixture of citric acid and glucoheptonic acid according to the mass ratio of 3:2-3: 5;
the cationic surfactant is REWOQUAT CPEM.
2. The three-way catalytic complexing cleaning solution as recited in claim 1, wherein the three-way catalytic complexing cleaning solution comprises the following components in percentage by weight:
wherein the hydroxycarboxylic acid is a mixture of citric acid and glucoheptonic acid in a ratio of 3:2-3: 5.
3. The three-way catalytic complexing cleaning solution as claimed in claim 2, wherein the three-way catalytic complexing cleaning solution comprises the following components in percentage by weight:
wherein the hydroxycarboxylic acid is a mixture of citric acid and glucoheptonic acid in a ratio of 3:2-3: 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610875850.5A CN107881037B (en) | 2016-09-30 | 2016-09-30 | Ternary catalytic complexing cleaning fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610875850.5A CN107881037B (en) | 2016-09-30 | 2016-09-30 | Ternary catalytic complexing cleaning fluid |
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| Publication Number | Publication Date |
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| CN107881037A CN107881037A (en) | 2018-04-06 |
| CN107881037B true CN107881037B (en) | 2020-08-25 |
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Citations (6)
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| JP2004175871A (en) * | 2002-11-26 | 2004-06-24 | Kurita Water Ind Ltd | Detergent for metal surface and method for deterging metal surface by using the same |
| CN1946878A (en) * | 2004-03-30 | 2007-04-11 | 米德尔塞克斯银有限公司 | Water-based metal treatment composition |
| CN102653706A (en) * | 2011-03-03 | 2012-09-05 | 宁波市鄞州声光电子有限公司 | Nonmetallic element cleaner |
| CN103451666A (en) * | 2013-09-16 | 2013-12-18 | 杨震宇 | Metal cleaning agent |
| CN104194985A (en) * | 2014-08-08 | 2014-12-10 | 深圳市爱康泉水处理服务有限公司 | Composition for cleaning agent, cleaning agent and application of cleaning agent |
| CN105713741A (en) * | 2016-02-24 | 2016-06-29 | 苏州龙腾万里化工科技有限公司 | High-efficiency decontamination water-based cleaning agent |
-
2016
- 2016-09-30 CN CN201610875850.5A patent/CN107881037B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004175871A (en) * | 2002-11-26 | 2004-06-24 | Kurita Water Ind Ltd | Detergent for metal surface and method for deterging metal surface by using the same |
| CN1946878A (en) * | 2004-03-30 | 2007-04-11 | 米德尔塞克斯银有限公司 | Water-based metal treatment composition |
| CN102653706A (en) * | 2011-03-03 | 2012-09-05 | 宁波市鄞州声光电子有限公司 | Nonmetallic element cleaner |
| CN103451666A (en) * | 2013-09-16 | 2013-12-18 | 杨震宇 | Metal cleaning agent |
| CN104194985A (en) * | 2014-08-08 | 2014-12-10 | 深圳市爱康泉水处理服务有限公司 | Composition for cleaning agent, cleaning agent and application of cleaning agent |
| CN105713741A (en) * | 2016-02-24 | 2016-06-29 | 苏州龙腾万里化工科技有限公司 | High-efficiency decontamination water-based cleaning agent |
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