CN105298641A - Cleaning method capable of improving durability of automobile three-way catalyst - Google Patents
Cleaning method capable of improving durability of automobile three-way catalyst Download PDFInfo
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- CN105298641A CN105298641A CN201510714606.6A CN201510714606A CN105298641A CN 105298641 A CN105298641 A CN 105298641A CN 201510714606 A CN201510714606 A CN 201510714606A CN 105298641 A CN105298641 A CN 105298641A
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- cleaning
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- way catalyst
- catalyzing unit
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Abstract
The invention discloses a cleaning method capable of improving the durability of an automobile three-way catalyst. The cleaning method is characterized by comprising the following steps that (1) the surface of the three-way catalyst is washed; (2) the three-way catalyst is detached, and the oxidized part is fully exposed in the air; (3) the detached three-way catalyst is put into an ultrasonic cleaning machine, and cleaning liquid is poured into the cleaning machine and stirred evenly; (4) after cleaning is finished, the three-way catalyst is aired and put into a sealed container; (5) after the sealed container is filled with inert gas, steam type reducing agents replace the inert gas step by step, and a circumfluence is formed; (6) after cleaning is finished, air replaces the reducing agents step by step; and (7) the three-way catalyst is taken out and assembled. The cleaning method capable of improving the durability of the automobile three-way catalyst has the beneficial effects that sediments attached to the surface can be effectively cleaned up, the three-way catalyst can recover to a good work state effectively, the cleaning effect is improved, and the durability is improved as well.
Description
Technical field
The present invention relates to a kind of cleaning method improving automobile three-way catalysts durability degree, belong to automobile mechanical technical field.
Background technique
The ternary catalyzing unit of automobile improves motor vehicle emission, reduces the vitals of automobile exhaust pollution.But along with the growth of service time, carbon distribution in vehicle exhaust, sulfur-bearing, phosphorous compound can deposit on the catalyst surface on three-way catalytic converter carrier, cause catalyst poisoning, catalytic efficiency decline, greatly reduce ternary catalyzing unit to purifying vehicle exhaust effect.
Current major part is mostly adopt corresponding cleaning solution to clean to the cleaning method of ternary catalyzing unit, has plenty of individual and oneself cleans, also have plenty of the cleaning by means of machine.But be at present no matter after individual or machine cleaning or have the problem of some remnants, the place be such as fully oxidized after cleaning does not have follow-up measure, and the function of ternary catalyzing unit still has no small reduction in this case.
Summary of the invention
For solving the deficiencies in the prior art, the object of the present invention is to provide a kind of cleaning performance good, improving the cleaning method in the working life of ternary catalyzing unit.
In order to realize above-mentioned target, the present invention adopts following technological scheme:
Improve a cleaning method for automobile three-way catalysts durability degree, it is characterized in that, comprise the steps:
1) surface of ternary catalyzing unit is rinsed;
2) dismantle ternary catalyzing unit, the part making it oxidized fully exposes in atmosphere;
3) by step 2) dismounting after ternary catalyzing unit put in Ultrasonic Cleaners, pour cleaning solution into and stir, cleaning;
4), after cleaning, pour out cleaning solution, after ternary catalyzing unit is air-dry, put into seal container;
5) by after being full of inert gas in seal container, progressively replace inert gas with steam-type reducing agent, and form circulation;
6), after cleaning, progressively reducing agent is replaced with air;
7) ternary catalyzing unit taken out and assemble complete.
Aforesaid a kind of cleaning method improving automobile three-way catalysts durability degree, is characterized in that, described step 2) also comprise subsequent treatment: ternary catalyzing unit inside is deposited to thing blocking or damages serious part and removes or change.
Aforesaid a kind of cleaning method improving automobile three-way catalysts durability degree, is characterized in that, the resonance of the Ultrasonic Cleaners in described step 3) produces frequency higher than 10KHz.
Aforesaid a kind of cleaning method improving automobile three-way catalysts durability degree, is characterized in that, the clean time in described step 3) is 10min-30min.
Aforesaid a kind of cleaning method improving automobile three-way catalysts durability degree, is characterized in that, in described step 5), the recovery time of ternary catalyzing unit in pure steam-type reducing agent is 20-30min.
Aforesaid a kind of cleaning method improving automobile three-way catalysts durability degree, it is characterized in that, in described step 5), inert gas adopts pure helium or neon.
The beneficial effect that the present invention reaches: the present invention effectively can not only remove the sediments being attached to surface, ternary catalyzing unit can also be made effectively to revert to good working order, also improve durability degree while improve cleaning performance.
Embodiment
The invention will be further described below.Following examples only for technological scheme of the present invention is clearly described, and can not limit the scope of the invention with this.
A kind of cleaning method improving automobile three-way catalysts durability degree that the present invention relates to, comprises the steps:
1) surface of ternary catalyzing unit is rinsed;
2) dismantle ternary catalyzing unit, the part making it oxidized fully exposes in atmosphere, and carries out subsequent treatment: ternary catalyzing unit inside is deposited to thing blocking or damages serious part and removes or change.
3) by step 2) ternary catalyzing unit after dismounting puts in Ultrasonic Cleaners, and pour cleaning solution into and stir, cleaning, the resonance of Ultrasonic Cleaners produces frequency higher than 10KHz, and clean time is 10min-30min.
4), after cleaning, pour out cleaning solution, after ternary catalyzing unit is air-dry, put into seal container;
5) by after being full of inert gas in seal container, progressively replace inert gas with steam-type reducing agent, and form circulation, the recovery time of ternary catalyzing unit in pure steam-type reducing agent is 20-30min.Preferably, inert gas adopts pure helium or neon.
6), after cleaning, progressively reducing agent is replaced with air;
7) ternary catalyzing unit taken out and assemble complete.
Cleaning solution in the method and reducing agent all can adopt the reagent that market can obtain.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvement and distortion, these improve and distortion also should be considered as protection scope of the present invention.
Claims (6)
1. improve a cleaning method for automobile three-way catalysts durability degree, it is characterized in that, comprise the steps:
1) surface of ternary catalyzing unit is rinsed;
2) dismantle ternary catalyzing unit, the part making it oxidized fully exposes in atmosphere;
3) by step 2) dismounting after ternary catalyzing unit put in Ultrasonic Cleaners, pour cleaning solution into and stir, cleaning;
4), after cleaning, pour out cleaning solution, after ternary catalyzing unit is air-dry, put into seal container;
5) by after being full of inert gas in seal container, progressively replace inert gas with steam-type reducing agent, and form circulation;
6), after cleaning, progressively reducing agent is replaced with air;
7) ternary catalyzing unit taken out and assemble complete.
2. a kind of cleaning method improving automobile three-way catalysts durability degree according to claim 1, is characterized in that, described step 2) also comprise subsequent treatment: ternary catalyzing unit inside is deposited to thing blocking or damages serious part and removes or change.
3. a kind of cleaning method improving automobile three-way catalysts durability degree according to claim 1, is characterized in that, the resonance of the Ultrasonic Cleaners in described step 3) produces frequency higher than 10KHz.
4. a kind of cleaning method improving automobile three-way catalysts durability degree according to claim 1, is characterized in that, the clean time in described step 3) is 10min-30min.
5. a kind of cleaning method improving automobile three-way catalysts durability degree according to claim 1, is characterized in that, in described step 5), the recovery time of ternary catalyzing unit in pure steam-type reducing agent is 20-30min.
6. a kind of cleaning method improving automobile three-way catalysts durability degree according to claim 1, it is characterized in that, in described step 5), inert gas adopts pure helium or neon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510714606.6A CN105298641A (en) | 2015-10-29 | 2015-10-29 | Cleaning method capable of improving durability of automobile three-way catalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510714606.6A CN105298641A (en) | 2015-10-29 | 2015-10-29 | Cleaning method capable of improving durability of automobile three-way catalyst |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105298641A true CN105298641A (en) | 2016-02-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510714606.6A Pending CN105298641A (en) | 2015-10-29 | 2015-10-29 | Cleaning method capable of improving durability of automobile three-way catalyst |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110700923A (en) * | 2019-10-24 | 2020-01-17 | 燕山大学 | Ultrasonic composite type catalytic converter and catalytic method |
| CN110872972A (en) * | 2018-08-31 | 2020-03-10 | 彭志军 | Motor vehicle three-way catalytic converter with cleaning function |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU95108682A (en) * | 1995-05-29 | 1996-08-10 | Акционерное общество - Научно-производственное предприятие "Ярсинтез" | Method of development of catalyst on the base of ferric oxide for dehydrogenation olefin alkylpyridine and alkylaromatic hydrocarbons |
| JPH11285640A (en) * | 1998-04-03 | 1999-10-19 | Jisedai Haigas Shokubai Kenkyusho:Kk | Production of catalyst for purification of exhaust gas |
| CN102873054A (en) * | 2012-09-21 | 2013-01-16 | 张海峰 | Method for cleaning three-way catalytic converter |
| CN103670705A (en) * | 2013-11-14 | 2014-03-26 | 宁波行泰商贸有限公司 | Ternary catalytic reduction device of automobile |
-
2015
- 2015-10-29 CN CN201510714606.6A patent/CN105298641A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU95108682A (en) * | 1995-05-29 | 1996-08-10 | Акционерное общество - Научно-производственное предприятие "Ярсинтез" | Method of development of catalyst on the base of ferric oxide for dehydrogenation olefin alkylpyridine and alkylaromatic hydrocarbons |
| JPH11285640A (en) * | 1998-04-03 | 1999-10-19 | Jisedai Haigas Shokubai Kenkyusho:Kk | Production of catalyst for purification of exhaust gas |
| CN102873054A (en) * | 2012-09-21 | 2013-01-16 | 张海峰 | Method for cleaning three-way catalytic converter |
| CN103670705A (en) * | 2013-11-14 | 2014-03-26 | 宁波行泰商贸有限公司 | Ternary catalytic reduction device of automobile |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110872972A (en) * | 2018-08-31 | 2020-03-10 | 彭志军 | Motor vehicle three-way catalytic converter with cleaning function |
| CN110872972B (en) * | 2018-08-31 | 2021-11-02 | 彭志军 | Motor vehicle three-way catalytic converter with cleaning function |
| CN110700923A (en) * | 2019-10-24 | 2020-01-17 | 燕山大学 | Ultrasonic composite type catalytic converter and catalytic method |
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Application publication date: 20160203 |
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| RJ01 | Rejection of invention patent application after publication |