CN108180053A - A kind of catalysis treatment method of vehicle exhaust - Google Patents
A kind of catalysis treatment method of vehicle exhaust Download PDFInfo
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- CN108180053A CN108180053A CN201711325180.0A CN201711325180A CN108180053A CN 108180053 A CN108180053 A CN 108180053A CN 201711325180 A CN201711325180 A CN 201711325180A CN 108180053 A CN108180053 A CN 108180053A
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- vehicle exhaust
- treatment method
- catalysis treatment
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/002—Mixed oxides other than spinels, e.g. perovskite
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/89—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with noble metals
- B01J23/8933—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with noble metals also combined with metals, or metal oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/8993—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with noble metals also combined with metals, or metal oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with chromium, molybdenum or tungsten
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/101—Three-way catalysts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/14—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/50—Carbon oxides
- B01D2257/502—Carbon monoxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/702—Hydrocarbons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2523/00—Constitutive chemical elements of heterogeneous catalysts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2370/00—Selection of materials for exhaust purification
- F01N2370/40—Activated carbon or charcoal
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
The invention discloses a kind of catalysis treatment methods of vehicle maintenance service, are related to environmental technology field.The catalysis treatment method that this law buys the vehicle exhaust of that offer includes collecting vehicle exhaust, and processing is filtered to it, and it removes suspended particulate substance therein；Catalytic treatment is carried out to vehicle exhaust with three-way catalyst；Alkaline absorption is carried out to vehicle exhaust；Activated carbon absorption, subsequent qualified discharge are carried out to vehicle exhaust.On the one hand heat recovery that the catalysis treatment method of vehicle exhaust provided by the invention generates tail gas is used to heat the air inlet of automobile, so as to improve the yield that the gasification temperature of fuel oil directly reduces noxious pollutant, on the other hand it is absorbed after carrying out three-element catalytic to noxious pollutant, effectively reduces the discharge capacity of pollutant.
Description
Technical field
The present invention relates to environmental technology field, especially a kind of catalysis treatment method of vehicle exhaust.
Background technology
In today of modern civilization, automobile has become the indispensable transport facility of the mankind, it is the life of people
Living and work brings great convenience, and also has been developed as one of pillar of modern times material progress.With automobile industry
High speed development, auto output and ownership are continuously increased, and the social concern caused is also more and more：Traffic congestion gets married often
Potluck, convenient, comfortable, the efficient advantage that automobile should have gradually are offset by excessive vehicle.That thus causes is tighter
The problem of weight is the atmosphere pollution that it brings, i.e. automobile exhaust pollution.In Chinese large- and-medium size cities, motor vehicle exhaust emission has become
The main source of atmospheric pollution.Data show that the total vehicle in Shanghai City is only equivalent to the 1/12 of Tokyo, but vehicle exhaust
Total emission volumn it is essentially identical.Chinese vehicle in use amount, will also be big with the increase of economic rapid development and society need
Amplitude increases.It can be seen that reduce the urgency of motor vehicle exhaust emission object.
The tail gas that we say now refers to vehicle exhaust more, i.e., the exhaust gas that automobile is discharged from exhaust pipe, contains in vehicle exhaust
Hydrocarbon, carbon monoxide, nitrogen oxidation nitrogen etc. are harmful and generate some dysgenic solid particles to human body, especially
Doped fuel, to the harm bigger of human body.Not only smell is strange for vehicle exhaust, but also makes us dizzy, nauseous, influences the body of people
Health.Vehicle exhaust has been listed in one of serious environmental pollution problem in the world, big to the processing of vehicle exhaust in the prior art
The carbon dioxide and solia particle in tail gas are only mostly handled by activated carbon adsorption or filling Ca (OH) 2, NaOH；It is such
Processing mode can not fully and completely handle the vehicle exhaust of complicated component, therefore effect is unsatisfactory, often can not
Reach the needs of higher and higher exhaust emission standard.
Invention content
The goal of the invention of the present invention is：In view of the above problems, a kind of catalytic treatment side of vehicle exhaust is provided
Method, on the one hand heat recovery that this method generates tail gas is used to heat the air inlet of automobile, so as to improve the gasification temperature of fuel oil
The yield of noxious pollutant is directly reduced, is absorbed after on the other hand carrying out three-element catalytic to noxious pollutant, is effectively reduced dirty
Contaminate the discharge capacity of object.
The technical solution adopted by the present invention is as follows：
A kind of catalysis treatment method of vehicle exhaust, includes the following steps：
Step 1：Vehicle exhaust is collected, processing is filtered to it, and it removes suspended particulate substance therein；
Step 2：Catalytic treatment is carried out to vehicle exhaust with three-way catalyst；
Step 3：Alkaline absorption is carried out to vehicle exhaust；
Step 4：Activated carbon absorption, subsequent qualified discharge are carried out to vehicle exhaust.
By adopting the above-described technical solution, carrying out multistep treatment to vehicle exhaust, processing is thorough, reduces effective pollutant
Discharge capacity.
A kind of catalysis treatment method of vehicle exhaust of the present invention, in step 1, when being filtered processing to vehicle exhaust,
Carry out by-pass filtration and secondary filtration successively to it, the wherein aperture of by-pass filtration is more than the aperture of secondary filtration.
By adopting the above-described technical solution, double-filtration handles thoroughly, after mitigation the solid suspended particle in tail gas
The load of continuous processing is conducive to protect aftertreatment device.
A kind of catalysis treatment method of vehicle exhaust of the present invention is filtered after handling before catalytic treatment, to vapour
Tail gas is shunted, and a part of vehicle exhaust enters the air inlet that the gas handling system of automobile is burnt as fuel oil, another part into
Row oxidation processes.
A kind of catalysis treatment method of vehicle exhaust of the present invention, the vehicle exhaust as fuel oil burning charge is with carrying out oxygen
The volume ratio for changing the vehicle exhaust of processing is 1:4-9.
By adopting the above-described technical solution, tail gas of the fraction Jing Guo filtration treatment enters mixer with high temperature air
The middle air inlet as fuel oil burning, since oxygen content is low in tail gas, strong inert can make mixture combustion slower, the heat of generation
Relatively low and noxious pollutant（Especially nitrogen oxides）It is relatively low.I.e. on the one hand the technical solution utilizes partial tail gas, directly subtracts
On the other hand few exhaust emissions amount reduces the content of pollutant in tail gas.
A kind of catalysis treatment method of vehicle exhaust of the present invention, in step 2, the three-way catalyst is noble metal-sulphur
Antidote-cerium zirconium compound oxide/activated alumina catalyst.
A kind of catalysis treatment method of vehicle exhaust of the present invention, the three-way catalyst are prepared via a method which：
Step 1：Noble metal, cerous nitrate, zirconium nitrate, activated alumina are scattered in deionized water and form suspension, this is outstanding for ball milling
Turbid 6-18h coating slurries；, cordierite honeycomb ceramic carrier matrix or metal beehive carrier matrix be dipped in coating slurry 10-
Matrix from coating slurry is taken out, 3-5h is dried under the conditions of 80-120 DEG C, then at 400-600 DEG C and in inertia by 15min
Under the protection of gas, roasting 3-5h obtains preliminary catalytic agent.
Step 2：Ammonium metavanadate solution dipping 24-36h is immersed into preliminary catalytic agent, 3- is dried under the conditions of 80-120 DEG C
5h；Then under the 400-600 DEG C of protection in inert gas, 3-5h is roasted；It is then immersed in nitric acid molybdenum solution and impregnates 24-36h,
3-5h is dried under the conditions of 80-120 DEG C；Then under the 400-600 DEG C of protection in inert gas, 3-5h is roasted；It is finally immersed in
24-36h is impregnated in the mixed solution of copper nitrate and potassium nitrate, 3-5h is dried under the conditions of 80-120 DEG C；Then at 400-600 DEG C
Under the protection of inert gas, roasting 3-5h to obtain the final product.
Contain sulfur dioxide in vehicle exhaust, there is poisoning effect to generating catalytic activity noble metal, reduce ternary and urge
The catalytic activity of agent shortens its service life.By adopting the above-described technical solution, noble metal-thiolysis toxic agent-cerium zirconium is compound
On the one hand oxide/activated alumina catalyst can resist the toxic effect of sulfur dioxide, ensure the catalysis of three-way catalyst
Activity.On the other hand, noble metal is directly dispersing in cerium zirconium compound oxide/activated alumina, is uniformly dispersed, and can effectively be kept away
Exempt from agglomeration of the noble metal in cerium zirconium compound oxide/activated alumina.
A kind of catalysis treatment method of vehicle exhaust of the present invention, in step 3, using akaline liquid to vehicle exhaust into
Row alkalinity absorbs, any one of the akaline liquid in potassium hydroxide, sodium hydroxide or calcium hydroxide.
By adopting the above-described technical solution, alkaline absorption solution can absorb the sour gas such as two for carrying out three-way catalytic apparatus
Carbonoxide, nitrogen dioxide, sulfur dioxide etc..
In conclusion by adopting the above-described technical solution, the beneficial effects of the invention are as follows：
（1）It is discharged after carrying out multistep treatment to vehicle exhaust, effectively reduces the discharge capacity of noxious pollutant.
（2）Catalytic treatment is carried out to vehicle exhaust with new catalyst, ensures the catalytic activity and service life of catalyst,
So as to ensure the catalytic effect of catalyst, the discharge capacity of pollutant is further reduced.
（3）The air inlet that recovery section tail gas burns as fuel oil, on the one hand utilizes partial tail gas, directly reduces tail gas row
High-volume, the content of pollutant in tail gas is on the other hand reduced.
Specific embodiment
All features or disclosed all methods disclosed in this specification or in the process the step of, in addition to mutually exclusive
Feature and/or step other than, can combine in any way.
This specification（Including any accessory claim, abstract）Disclosed in any feature, unless specifically stated,
It is replaced by other equivalent or with similar purpose alternative features.That is, unless specifically stated, each feature is a series of
An example in equivalent or similar characteristics.
Embodiment 1
The present embodiment provides a kind of catalysis treatment methods of vehicle exhaust, and multistep treatment is carried out to vehicle exhaust, and processing is thorough, drop
The discharge capacity of low effective pollutant.The catalysis treatment method of vehicle exhaust provided in this embodiment includes the following steps：
Step 1：Vehicle exhaust is collected, is filtered to remove suspended particulate substance therein with solid particulate filter.
Step 2：Catalytic treatment is carried out to vehicle exhaust with three-way catalyst, by carbon monoxide therein, nytron
Object, nitrogen oxides catalytic treatment.
Step 3：Alkaline absorption is carried out to the vehicle exhaust after three-element catalytic with alkalies body fluid, to remove acid therein
Property nuisance, any one of akaline liquid in potassium hydroxide, sodium hydroxide or calcium hydroxide.
Step 4：The vehicle exhaust absorbed with activated carbon adsorption through alkalinity, after activated carbon adsorption, vehicle exhaust reaches row
It puts.
Embodiment 2
The present embodiment provides a kind of catalysis treatment methods of vehicle exhaust, and multistep treatment is carried out to vehicle exhaust, and processing is thorough；Together
When the air inlet burnt as fuel oil of recovery section tail gas, reduce the discharge capacity of effective pollutant.Car tail provided in this embodiment
The catalysis treatment method of gas includes the following steps：
Step 1：Vehicle exhaust is collected, is filtered to remove suspended particulate substance therein with solid particulate filter.
Step 2：Vehicle exhaust after filtering is shunted, the gas handling system that a part of vehicle exhaust enters automobile is made
For fuel oil burning air inlet, wherein, as fuel oil burning charge vehicle exhaust with enter next treatment process vehicle exhaust
Volume ratio be 1:4-9.
Step 3：Three-element catalytic processing is carried out to the vehicle exhaust after shunting, by carbon monoxide therein, nytron
Object, nitrogen oxides catalytic treatment.
Step 4：Alkaline absorption is carried out to the vehicle exhaust after three-element catalytic with alkalies body fluid, to remove acid therein
Property nuisance, any one of akaline liquid in potassium hydroxide, sodium hydroxide or calcium hydroxide.
Step 5：The vehicle exhaust absorbed with activated carbon adsorption through alkalinity, after activated carbon adsorption, vehicle exhaust reaches row
It puts.
Embodiment 3
The present embodiment provides a kind of catalysis treatment methods of vehicle exhaust, and multistep treatment is carried out to vehicle exhaust, and processing is thorough；Together
When the air inlet burnt as fuel oil of recovery section tail gas, reduce the discharge capacity of effective pollutant.Car tail provided in this embodiment
The catalysis treatment method of gas includes the following steps：
Step 1：Vehicle exhaust is collected, with carrying out by-pass filtration and two level mistake to vehicle exhaust with solid particulate filter successively
Filter to remove suspended particulate substance therein, wherein and the aperture of filtering be more than the aperture of secondary filtration.
Step 2：Vehicle exhaust after filtering is shunted, the gas handling system that a part of vehicle exhaust enters automobile is made
For fuel oil burning air inlet, wherein, as fuel oil burning charge vehicle exhaust with enter next treatment process vehicle exhaust
Volume ratio be 1:4-9.
Step 3：Three-element catalytic processing is carried out to the vehicle exhaust after shunting, by carbon monoxide therein, nytron
Object, nitrogen oxides catalytic treatment.
Step 4：Alkaline absorption is carried out to the vehicle exhaust after three-element catalytic with alkalies body fluid, to remove acid therein
Property nuisance, any one of akaline liquid in potassium hydroxide, sodium hydroxide or calcium hydroxide.
Step 5：The vehicle exhaust absorbed with activated carbon adsorption through alkalinity, after activated carbon adsorption, vehicle exhaust reaches row
It puts.
Embodiment 4
The present embodiment provides a kind of three-way catalyst, which is used for the processing of vehicle exhaust, on the one hand can resist
On the other hand the toxic effect of sulfur dioxide in vehicle exhaust avoids noble metal in cerium zirconium compound oxide/activated alumina
Agglomeration.The three-way catalyst is prepared via a method which：
Step 1：Noble metal platinum, rhodium, palladium, cerous nitrate, zirconium nitrate, activated alumina are scattered in deionized water and form suspension,
Ball milling suspension 6-18h coating slurries；Cordierite honeycomb ceramic carrier matrix or metal beehive carrier matrix are dipped in coating
Matrix from coating slurry is taken out, 3-5h is dried under the conditions of 80-120 DEG C, then at 400-600 DEG C by slurries 10-15min
And under the protection of inert gas, roasting 3-5h obtains preliminary catalytic agent.
Step 2：Ammonium metavanadate solution dipping 24-36h is immersed into preliminary catalytic agent, 3- is dried under the conditions of 80-120 DEG C
5h；Then under the 400-600 DEG C of protection in inert gas, 3-5h is roasted；It is then immersed in nitric acid molybdenum solution and impregnates 24-36h,
3-5h is dried under the conditions of 80-120 DEG C；Then under the 400-600 DEG C of protection in inert gas, 3-5h is roasted；It is finally immersed in
24-36h is impregnated in the mixed solution of copper nitrate and potassium nitrate, 3-5h is dried under the conditions of 80-120 DEG C；Then at 400-600 DEG C
Under the protection of inert gas, roasting 3-5h to obtain the final product.
The invention is not limited in aforementioned specific embodiments.The present invention, which expands to, any in the present specification to be disclosed
The step of new feature or any new combination and any new method or process disclosed or any new combination.
Claims (7)
1. a kind of catalysis treatment method of vehicle exhaust, which is characterized in that it includes the following steps：
Step 1：Vehicle exhaust is collected, processing is filtered to it, and it removes suspended particulate substance therein；
Step 2：Catalytic treatment is carried out to vehicle exhaust with three-way catalyst；
Step 3：Alkaline absorption is carried out to vehicle exhaust；
Step 4：Activated carbon absorption, subsequent qualified discharge are carried out to vehicle exhaust.
2. the catalysis treatment method of vehicle exhaust according to claim 1, which is characterized in that in step 1, to car tail
When gas is filtered processing, by-pass filtration and secondary filtration are carried out successively to it, the wherein aperture of by-pass filtration is more than two level mistake
The aperture of filter.
3. the catalysis treatment method of vehicle exhaust according to claim 1, which is characterized in that be filtered processing and urge later
Before change processing, vehicle exhaust is shunted, what the gas handling system that a part of vehicle exhaust enters automobile was burnt as fuel oil
Air inlet, another part carry out oxidation processes.
4. the catalysis treatment method of vehicle exhaust according to claim 3, which is characterized in that as fuel oil burning charge
The volume ratio of vehicle exhaust of the vehicle exhaust with carrying out oxidation processes is 1:4-9.
5. the catalysis treatment method of vehicle exhaust according to claim 1, which is characterized in that in step 2, the ternary
Catalyst is noble metal-thiolysis toxic agent-cerium zirconium compound oxide/activated alumina catalyst.
6. the catalysis treatment method of vehicle exhaust according to claim 5, which is characterized in that the three-way catalyst passes through
It is prepared by following method：
Step 1：Noble metal, cerous nitrate, zirconium nitrate, activated alumina are scattered in deionized water and form suspension, this is outstanding for ball milling
Turbid 6-18h coating slurries；Cordierite honeycomb ceramic carrier matrix or metal beehive carrier matrix are dipped in coating slurry 10-
Matrix from coating slurry is taken out, 3-5h is dried under the conditions of 80-120 DEG C, then at 400-600 DEG C and in inertia by 15min
Under the protection of gas, roasting 3-5h obtains preliminary catalytic agent；
Step 2：Ammonium metavanadate solution dipping 24-36h is immersed into preliminary catalytic agent, 3-5h is dried under the conditions of 80-120 DEG C；So
Afterwards under the 400-600 DEG C of protection in inert gas, 3-5h is roasted；It is then immersed in nitric acid molybdenum solution and impregnates 24-36h, in 80-
3-5h is dried under the conditions of 120 DEG C；Then under the 400-600 DEG C of protection in inert gas, 3-5h is roasted；It is finally immersed in copper nitrate
With impregnating 24-36h in the mixed solution of potassium nitrate, 3-5h is dried under the conditions of 80-120 DEG C；Then at 400-600 DEG C in inertia
Under the protection of gas, roasting 3-5h to obtain the final product.
7. the catalysis treatment method of vehicle exhaust according to claim 1, which is characterized in that in step 3, using alkalinity
Liquid carries out vehicle exhaust alkaline absorption, the akaline liquid appointing in potassium hydroxide, sodium hydroxide or calcium hydroxide
Meaning is a kind of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711325180.0A CN108180053A (en) | 2017-12-13 | 2017-12-13 | A kind of catalysis treatment method of vehicle exhaust |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711325180.0A CN108180053A (en) | 2017-12-13 | 2017-12-13 | A kind of catalysis treatment method of vehicle exhaust |
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| Publication Number | Publication Date |
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| CN108180053A true CN108180053A (en) | 2018-06-19 |
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| CN201711325180.0A Withdrawn CN108180053A (en) | 2017-12-13 | 2017-12-13 | A kind of catalysis treatment method of vehicle exhaust |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109113837A (en) * | 2018-08-31 | 2019-01-01 | 长春工程学院 | A kind of catalysis treatment method of vehicle exhaust |
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2017
- 2017-12-13 CN CN201711325180.0A patent/CN108180053A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109113837A (en) * | 2018-08-31 | 2019-01-01 | 长春工程学院 | A kind of catalysis treatment method of vehicle exhaust |
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Application publication date: 20180619 |