CN104405475A - Automobile exhaust filtering treatment device - Google Patents

Automobile exhaust filtering treatment device Download PDF

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Publication number
CN104405475A
CN104405475A CN201410556159.1A CN201410556159A CN104405475A CN 104405475 A CN104405475 A CN 104405475A CN 201410556159 A CN201410556159 A CN 201410556159A CN 104405475 A CN104405475 A CN 104405475A
Authority
CN
China
Prior art keywords
nano fibrous
fibrous membrane
catalytic converter
treatment device
woven fabric
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201410556159.1A
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Chinese (zh)
Inventor
何吉欢
李学伟
李雅
陈柔羲
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nantong Hundred Bo Si Nanosecond Science And Technology Co Ltds
Original Assignee
Nantong Hundred Bo Si Nanosecond Science And Technology Co Ltds
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nantong Hundred Bo Si Nanosecond Science And Technology Co Ltds filed Critical Nantong Hundred Bo Si Nanosecond Science And Technology Co Ltds
Priority to CN201410556159.1A priority Critical patent/CN104405475A/en
Publication of CN104405475A publication Critical patent/CN104405475A/en
Pending legal-status Critical Current

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    • 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

Landscapes

  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Catalysts (AREA)

Abstract

The invention discloses an automobile exhaust filtering treatment device which is characterized by comprising a catalytic converter, a reaction tank and a sleeve, wherein the reaction tank is connected between the catalytic converter and the sleeve; a three-way catalyst or metal oxide is arranged in the catalytic converter; oxidizing liquid is arranged in the reaction tank; a polypropylene non-woven fabric overlapped with a nanorfiber film is arranged in the sleeve. According to the treatment device disclosed by the invention, the blockage rate of blocking particles with the specification of over 0.5mu. m reaches over 95 percent; part of the particles and harmful gas are absorbed or settled in liquid and finally pass through the non-woven fabric, and the nanofiber film contained in the non-woven fabric has a small straight hole diameter and can filter out particulate matters with the specification of over 0.5mu. m. Activated carbon or the catalyst contained on the nanofiber film in the non-woven fabric can carry out catalytic oxidation and adsorption on the harmful gas.

Description

Vehicle exhaust filtration treatment device
Technical field
The present invention relates to a kind of emission-control equipment, specifically a kind of filtering and purifying of vehicle exhaust.
Background technique
The compositions such as the CO in waste gas sent off from automobiles, HC, NOx, leaded thing and sulphide are very big to harm.In order to eliminate this serious social effects of pollution, the countries and regions such as U.S., Europe, day have formulated strict emission regulation in succession.Therefore, administer or control motor vehicle exhaust emission, having become the key subjects that global protection environment is urgently to be resolved hurrily.External engine purification mainly relies on three-way exhaust device, the core of exhaust purifier is catalyzer, its working principle utilizes oxygen remaining in discharging waste gas and delivery temperature, carry out being oxidized at catalyst surface, reduction reaction, make harmful matter CO, HC and NO, be transformed into the CO of nonhazardous 2, H 2o and N 2, thus decrease the pollution to environment.The research work of China's automobile exhaust purifier starts from the mid-1970s, but until nineteen ninety-five, just the research of three-way catalyst is carried out in project verification, and 1997 again to the carrier research experiment of catalyzer.Up to the present, the three-way exhaust device of China considers from stability and reliability angle the condition still not possessing large-scale popularization.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of gas emission device end at automobile exhaust pipe and adds the filtrating equipment that processes vehicle exhaust layer by layer; this device can make exhausting air after catalytic oxidation, cooling absorption; after eventually passing layer of non-woven fabric filter membrane, remaining particle or harmful gas continue catalyzed and stop.
The technological scheme of technical solution problem of the present invention is:
A kind of vehicle exhaust filtration treatment device, it is characterized in that: comprise Catalytic Converter, reaction tank and sleeve pipe, described reaction tank is connected to Catalytic Converter between sleeve pipe, three-way catalyst or metallic oxide is provided with in described Catalytic Converter, in described reaction tank, be provided with oxidizing liquid, in described sleeve pipe, be provided with the polypropylene non-woven fabric of superposition nano fibrous membrane.
Described nano fibrous membrane is PES nano fibrous membrane, PET nano fibrous membrane, PVA nano fibrous membrane, PP nano fibrous membrane or PS nano fibrous membrane.
Described metallic oxide is Al 2o 3, CeO 2, La 2o 3or ZrO 2; Described oxidizing liquid is Na 2cO 3or NaOH solution.
Waste gas sent off from automobiles first through adding the Catalytic Converter 1 of the associated catalysts that can react with the composition such as the CO in waste gas, HC, NOx, leaded thing and sulphide, in Catalytic Converter 1 a part of CO, HC, NOx etc. under catalyzer 2 acts on by reaction formation CO 2and H 2o, then measures effluent air temp through exhaust gas temperature sensor 3, and through long outlet pipe 4, exhaust temperature may reduce, and eventually passes main baffler 5, and add layer of metal filter screen 6 at main baffler end, in waste gas, large particle is stopped to get off.But still containing a large amount of fine particles and harmful gas in remaining waste gas.Add a tail gas filtering apparatus as Fig. 2 at exhaust tail pipe of automobile place by screw thread simultaneously.
Remainder of exhaust gas makes residual gas further be reacted through small-sized Catalytic Converter 7, then through oxidizing liquid 8, both can react with harmful gas, again can sedimentation large particle, also reduces the discharge of heat, decreases the burden of filtering absorption simultaneously.The automobile tail gas pipe filter of double-layer PET heatproof nonwovens 10 sleeve pipe 9 of compound one deck nano fibrous membrane 11 in the middle of eventually passing one.Because the aperture of nano fibrous membrane is less, the subparticle in waste gas can be blocked on nonwovens, simultaneously with the addition of catalytic oxidant and active carbon in nano fibrous membrane, make unreacted completely harmful gas continue oxidation reaction and become innocuous gas.
Treatment device of the present invention stops that the stop rate of the particle of more than 0.5 μm reaches more than 95%, part particle and harmful gas are absorbed or sedimentation in a liquid, eventually pass nonwovens, and the clear opening of nano fibrous membrane contained in nonwovens is through little, can filter out the particulate matter of more than 0.5 μm.Active carbon contained on nano fibrous membrane in nonwovens or catalyzer can by harmful gas catalytic oxidation and absorption.Compared with prior art, the invention has the beneficial effects as follows:
(1) order successively alleviating the harm of harmful gas in vehicle exhaust and particle of the present invention, can alleviate the burden of filter membrane like this, also alleviate the destruction of high temperature to filter membrane.
(2) described being reached by liquid in the present invention is lowered the temperature and the method can reacted with harmful gas, not only make use of the advantage that liquid fully can contact with harmful gas, and also utilize large particle settlement action in a liquid, reduce the burden of following filter work.
(3) utilize the feature that nanofiber membrane aperture is little described in the present invention, filter out particle less in waste gas, substantially increase the filter efficiency of this device.
Accompanying drawing explanation
Fig. 1 automobile exhaust pipe schematic diagram;
Fig. 2 is automobile exhaust filter device schematic diagram of the present invention;
Catalytic reaction process schematic diagram in Fig. 3 filter;
Fig. 4 nonwovens sectional drawing.
Embodiment
Below in conjunction with concrete case study on implementation, set forth the present invention further, and these case study on implementation are only not used in for illustration of the present invention and limit the scope of the invention.Meanwhile, after the content of reading the present invention's instruction, those skilled in the art can make various change or amendment to the present invention, and these equivalent form of values belong to the application's appended claims limited range equally.
embodiment 1
Add three-way catalyst in Catalytic Converter 7 in Fig. 2 filter, can promote that the conversions such as the CO in 12 waste gas, HC, NOx, leaded thing and sulphide become the CO of 13 2and H 2o.Na is added in oxidizing liquid 8 2cO 3, sodium carbonate absorbs the part nitrogen oxide in waste gas, and gas is through liquid, and harmful gas fully contacts with liquid, thus makes large particle create sedimentation.Pipe box 9 has been installed the polypropylene non-woven fabric of superposition PES nano fibrous membrane, the surface of PES nano fibrous membrane is conducive to expanding the contact of itself and harmful gas, also can continue again to add catalytic oxidant, make not oxidized harmful matter or particle can have better contact with oxygenant, be conducive to granule and filter.
Can adding in Catalytic Converter 7 except adding metal three-way catalyst, also can add Al 2o 3, CeO 2, La 2o 3, ZrO 2deng metallic oxide.In 8, solution can replace to NaOH solution.
embodiment 2
When waste gas is by discharge end, the non-woven membrane of tubulose is added in tailpipe, the nano fibrous membrane added in non-woven membrane is nano fibrous membrane prepared by the material of PET heatproof, and PET nano fibrous membrane is the nano fibrous membrane that can normally work in certain temperature range.And the thickness of polypropylene non-woven fabric increases along with the exhaust of the increase of Exhaust Pressure.When automobile turns on the power stronger, through the resistant to elevated temperatures nano fibrous membrane of thinner PET, nano fibrous membrane can be destroyed, therefore the grammes per square metre increasing polypropylene non-woven fabric is needed, the thickness of PET nano fibrous membrane to be increased simultaneously, be beneficial to filter more particulate matters making burning insufficient because power is much.Also can add active carbon and three-effect catalysis oxygenant in PET nano fibrous membrane simultaneously.
PET nano fibrous membrane wherein can replace with PVA nano fibrous membrane, PP nano fibrous membrane, PS nano fibrous membrane.The agent of triple effect metal catalytic oxidation can replace with Al 2o 3, CeO 2, La 2o 3, ZrO 2deng metal oxide catalyst.

Claims (3)

1. a vehicle exhaust filtration treatment device, it is characterized in that: comprise Catalytic Converter, reaction tank and sleeve pipe, described reaction tank is connected to Catalytic Converter between sleeve pipe, three-way catalyst or metallic oxide is provided with in described Catalytic Converter, in described reaction tank, be provided with oxidizing liquid, in described sleeve pipe, be provided with the polypropylene non-woven fabric of superposition nano fibrous membrane.
2. vehicle exhaust filtration treatment device according to claim 1, is characterized in that: described nano fibrous membrane is PES nano fibrous membrane, PET nano fibrous membrane, PVA nano fibrous membrane, PP nano fibrous membrane or PS nano fibrous membrane.
3. vehicle exhaust filtration treatment device according to claim 1, is characterized in that: described metallic oxide is Al2O3, CeO 2, La 2o 3or ZrO 2; Described oxidizing liquid is Na 2cO 3or NaOH solution.
CN201410556159.1A 2014-10-20 2014-10-20 Automobile exhaust filtering treatment device Pending CN104405475A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410556159.1A CN104405475A (en) 2014-10-20 2014-10-20 Automobile exhaust filtering treatment device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410556159.1A CN104405475A (en) 2014-10-20 2014-10-20 Automobile exhaust filtering treatment device

Publications (1)

Publication Number Publication Date
CN104405475A true CN104405475A (en) 2015-03-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410556159.1A Pending CN104405475A (en) 2014-10-20 2014-10-20 Automobile exhaust filtering treatment device

Country Status (1)

Country Link
CN (1) CN104405475A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105003325A (en) * 2015-07-20 2015-10-28 合肥科启环保科技有限公司 Engine tail gas treatment device
CN106499473A (en) * 2016-09-23 2017-03-15 合肥信达膜科技有限公司 A kind of vehicle exhaust film purifying device

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101185817A (en) * 2007-12-12 2008-05-28 天津工业大学 Method for preparing nano alumina fiber film material
CN101309866A (en) * 2005-09-08 2008-11-19 韩华石油化学株式会社 Method for preparing metal oxide containing precious metals
US20110219755A1 (en) * 2008-09-24 2011-09-15 Emitec Gesellschaft Fuer Emissionstechnologie Mbh Exhaust-gas purification system for diesel engines
CN202300588U (en) * 2011-09-28 2012-07-04 虞跃平 Multistage purifying and filtering device for tail gas of motor vehicle
CN102828801A (en) * 2012-05-04 2012-12-19 四川华通工程技术研究院 PPS (Polyphenylene Sulfide) multistage filter for automobile tail gas
CN103470346A (en) * 2013-10-08 2013-12-25 北京林业大学 Multiple-effect automobile exhaust purification device
CN203355613U (en) * 2013-01-17 2013-12-25 力技科技工程股份有限公司 Catalyst filtering equipment and waste gas treatment system
CN204267131U (en) * 2014-10-20 2015-04-15 南通百博丝纳米科技有限公司 Vehicle exhaust filtration treatment device

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101309866A (en) * 2005-09-08 2008-11-19 韩华石油化学株式会社 Method for preparing metal oxide containing precious metals
CN101185817A (en) * 2007-12-12 2008-05-28 天津工业大学 Method for preparing nano alumina fiber film material
US20110219755A1 (en) * 2008-09-24 2011-09-15 Emitec Gesellschaft Fuer Emissionstechnologie Mbh Exhaust-gas purification system for diesel engines
CN202300588U (en) * 2011-09-28 2012-07-04 虞跃平 Multistage purifying and filtering device for tail gas of motor vehicle
CN102828801A (en) * 2012-05-04 2012-12-19 四川华通工程技术研究院 PPS (Polyphenylene Sulfide) multistage filter for automobile tail gas
CN203355613U (en) * 2013-01-17 2013-12-25 力技科技工程股份有限公司 Catalyst filtering equipment and waste gas treatment system
CN103470346A (en) * 2013-10-08 2013-12-25 北京林业大学 Multiple-effect automobile exhaust purification device
CN204267131U (en) * 2014-10-20 2015-04-15 南通百博丝纳米科技有限公司 Vehicle exhaust filtration treatment device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105003325A (en) * 2015-07-20 2015-10-28 合肥科启环保科技有限公司 Engine tail gas treatment device
CN106499473A (en) * 2016-09-23 2017-03-15 合肥信达膜科技有限公司 A kind of vehicle exhaust film purifying device
CN106499473B (en) * 2016-09-23 2018-09-18 合肥信达膜科技有限公司 A kind of vehicle exhaust film purifying device

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Application publication date: 20150311