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CN105587387B - Double-stage high-efficient reduced form ternary catalyzing unit - Google Patents

Double-stage high-efficient reduced form ternary catalyzing unit Download PDF

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Publication number
CN105587387B
CN105587387B CN201610002269.2A CN201610002269A CN105587387B CN 105587387 B CN105587387 B CN 105587387B CN 201610002269 A CN201610002269 A CN 201610002269A CN 105587387 B CN105587387 B CN 105587387B
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CN
China
Prior art keywords
oxygen
stage
level
catalyst converter
impeller
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.)
Expired - Fee Related
Application number
CN201610002269.2A
Other languages
Chinese (zh)
Other versions
CN105587387A (en
Inventor
陈彦锋
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.)
Katcon (Chongqing) Emission Control Systems Co.
Original Assignee
Katcon (chongqing) Emission Control Systems Co
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 Katcon (chongqing) Emission Control Systems Co filed Critical Katcon (chongqing) Emission Control Systems Co
Priority to CN201610002269.2A priority Critical patent/CN105587387B/en
Publication of CN105587387A publication Critical patent/CN105587387A/en
Application granted granted Critical
Publication of CN105587387B publication Critical patent/CN105587387B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F01N3/08—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
    • F01N3/24—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 characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • 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
    • F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
    • F01N11/007—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity the diagnostic devices measuring oxygen or air concentration downstream of the exhaust apparatus
    • 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
    • F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
    • F01N2570/10—Carbon or carbon oxides
    • 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
    • F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
    • F01N2570/14—Nitrogen oxides
    • 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
    • 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
    • Y02T10/40—Engine management systems

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)

Abstract

The present invention provides a kind of double-stage high-efficient reduced form ternary catalyzing unit, including the one stage catalyzing device of front and rear connection, two level catalyst converter；The catalyst converter includes housing and the reaction chamber surrounded by housing, fills up honeycomb catalyst support in the reaction chamber, the catalytic support surface is coated with three-way catalyst；Connected between the one-level, two level catalyst converter by one section of communicating pipe, be provided with one the communicating pipe by the check valve in point tube outside pipe.Carbon monoxide, hydrocarbon, the nitrogen oxides that the ternary catalyzing unit can discharge gasoline engine obtain sufficient redox reaction, so as to which they efficiently be excluded.

Description

Double-stage high-efficient reduced form ternary catalyzing unit
Technical field
The present invention relates to vehicle maintenance service apparatus field, is a kind of ternary catalyzing unit especially.
Background technology
After being burnt due to automobile gasoline, a large amount of pernicious gases are produced, mainly including carbon monoxide, hydrocarbon, nitrogen oxygen Compound；This kind mixing pernicious gas is handled using ternary catalyzing unit therefore, being typically necessary, it is generated carbon dioxide And water, then drain into air.In ternary catalyzing unit, the reaction being substantially carried out has three, and its equation is as follows：
CO+1/2O2→CO2 ①、H4C2+3O2 → 2CO2+2H2O②、NOX+CO → N2+CO23. three chemistry are anti- Should be carried out simultaneously in the same cavity of ternary catalyzing unit, during progress 1. formula, 2. formula is oxidation reaction, 3. formula for reduction Reaction, due to the progress of 1. formula, more CO is consumed, so as to limit the progress of 3. formula, which has limited the reduction of nitrogen oxides Efficiency, that is, it is difficult to ensure being completely eliminated for nitrogen oxides；On the other hand, when automobile fuel filler door, when such as starting and accelerate, due to Air-fuel ratio is relatively low, oxygen content deficiency, will also cause 1., 2. formula reaction it is insufficient, also will increase tail gas harmfulness.
The content of the invention
In view of the above-mentioned problems, it is an object of the invention to provide a kind of double-stage high-efficient reduced form ternary catalyzing unit, the ternary Carbon monoxide, hydrocarbon, the nitrogen oxides that catalyst converter can discharge gasoline engine obtain sufficient redox reaction, so as to They are efficiently excluded.
Technical scheme is used by the present invention realizes technical purpose：Before the double-stage high-efficient reduced form ternary catalyzing unit includes One stage catalyzing device, the two level catalyst converter connected afterwards；The catalyst converter includes housing and the reaction chamber surrounded by housing, the reaction Intracavitary fills up honeycomb catalyst support, and the catalytic support surface is coated with three-way catalyst；The one-level, two level catalyst converter it Between connected by one section of communicating pipe, be provided with one the communicating pipe by the check valve in point tube outside pipe.
Preferably, an oxygen sensor is provided with the inlet end of the one stage catalyzing device, the oxygen sensor electricity Gas is coupled in automobile engine control system.
Preferably, the front end of the one stage catalyzing device is also connected with an oxygen filter, for eliminating motor exhaust In oxygen；The oxygen filter connects automobile exhaust pipeline.Further, inside the oxygen filter using iron powder as Oxygen scavenger.Further, the oxygen filter includes an impeller, and the impeller can be continuous under the promotion of exhaust airstream Rotation, by being formed through magnetized web plate, the iron powder is piled up in below the impeller on the blade face of the impeller.
The beneficial effects of the present invention are：At work, vehicle exhaust is first for the double-stage high-efficient reduced form ternary catalyzing unit Into one stage catalyzing device, under the relatively low situation of engine air-fuel ratio, usually under the situation of open out, due to containing in tail gas Oxygen amount is relatively low so that the CO oxidation reactions in tail gas are limited, make substantial amounts of CO in one stage catalyzing device with nitrogen oxides Reduction reaction is carried out, is substantially eliminated nitrogen oxides, then, remaining pernicious gas carbon monoxide, hydrocarbon pass through One-level, two level catalyst converter communicating pipe after enter two level catalyst converter；When by the communicating pipe, air velocity is strengthened, so as to Intraductal atmospheric pressure is less than tube pressure, the outer air of pipe is inhaled into by the check valve on communicating pipe in pipe, so that mixed gas Into oxygen is rich in during two level catalyst converter, so that the oxidation reaction of carbon monoxide, hydrocarbon is fully carried out；Thus, make Three chemical equations in background technology are all sufficiently carried out, make pernicious gas content in the tail gas finally discharged big Width declines.
Brief description of the drawings
Fig. 1 is the schematic diagram of embodiment one of this double-stage high-efficient reduced form ternary catalyzing unit.
Fig. 2 is the schematic diagram of embodiment two of this double-stage high-efficient reduced form ternary catalyzing unit.
Embodiment
The present invention is further described with reference to the accompanying drawings and examples：
Embodiment one：
In the embodiment one shown in Fig. 1, the one-level that the double-stage high-efficient reduced form ternary catalyzing unit includes front and rear connection is urged Change device 1, two level catalyst converter 2；The catalyst converter includes housing and the reaction chamber surrounded by housing, and honeycomb is filled up in the reaction chamber Shape catalytic support 11,21, the catalytic support surface are coated with three-way catalyst；Between the one-level, two level catalyst converter 1,2 by One section of communicating pipe 3 connects, and is provided with one the communicating pipe 3 by the check valve 4 in point tube outside pipe.
Above-mentioned ternary catalyzing unit, the inlet end of the one stage catalyzing device 1 is interior to be provided with an oxygen sensor 5, the oxygen Gas sensor 5 is electrically coupled to automobile engine control system；Oxygen content in the tail gas being expelled directly out for monitoring engine, To adjust atomizer by engine control system, the air-fuel ratio of engine is controlled.
At work, vehicle exhaust initially enters one stage catalyzing device 1 to above-mentioned double-stage high-efficient reduced form ternary catalyzing unit, is sending out Under the relatively low situation of motivation air-fuel ratio, usually under the situation of open out, because oxygen content is relatively low in tail gas, so that tail CO oxidation reactions in gas are limited, and substantial amounts of CO is carried out reduction reaction with nitrogen oxides in one stage catalyzing device 1, are made nitrogen oxygen Compound is substantially eliminated, i.e. and in one stage catalyzing device 1, the 3. formula in background technology is fully carried out, it is then, remaining harmful Atmospheric CO, hydrocarbon through one-level, two level catalyst converter communicating pipe 3 after enter two level catalyst converter 2；Passing through When stating communicating pipe 3, because air velocity is strengthened, so as to which intraductal atmospheric pressure is less than tube pressure, the outer air of pipe is set to pass through on communicating pipe 3 Check valve 4 be inhaled into pipe so that mixed gas is rich in oxygen when entering two level catalyst converter 2, so that carbon monoxide, carbon The oxidation reaction of hydrogen compound is fully carried out, i.e. in two level catalyst converter 2, make in background technology 1., 2. formula is fully carried out； As a result, three chemical equations in background technology are all sufficiently carried out, gas is harmful in the tail gas for making finally to discharge Body content declines to a great extent.
Embodiment two：
In the embodiment two shown in Fig. 2, it is with the difference of embodiment one：The front end of the one stage catalyzing device 1 An oxygen filter 6 is also connected with, for eliminating the oxygen in motor exhaust；The oxygen filter 6 connects automobile exhaust Pipeline；The oxygen sensor 5 is located at the front end of oxygen filter 6, and the oxygen content for the tail gas put that runs in engine direct is carried out Monitoring, to feed back to engine control system.
The inside of oxygen filter 6 includes an impeller 61, and the impeller 61 can be continuous under the promotion of exhaust airstream Rotation, the blade face of the impeller 61 through magnetized web plate by forming；Also being dissipated in the oxygen filter 6 has iron powder, with the iron For powder as oxygen absorber, the iron powder is piled up in the lower section of impeller 61；According to this scheme, in exhaust process, impeller 61 Continuous rotation, the blade face of the lower section of impeller 61 is drawn iron powder by magnetic attraction upwards, and is gradually covered with blade face, until blade face outer layer Iron powder reach mechanical balance（Magnetic force suffered by the iron powder of outer layer is smaller, and suffered gravity is constant）So that iron powder is with impeller 61 Blade face is the circulating area that support is distributed in tail gas in planar, the oxygen in tail gas is fully absorbed by iron powder（Make iron Powder aoxidizes）, while the circulation to tail gas does not form obvious obstruction again.
For embodiment two, when automobile at the uniform velocity travels, in the case that air-fuel is higher in original tail gas, institute can be passed through State oxygen filter 6 first largely to absorb the oxygen in original tail gas, then nitrogen oxides is had bar in one stage catalyzing device 1 again Part fully reacts, and removes carbon monoxide and hydrocarbon in two level catalyst converter 2；That is, embodiment two can be in automobile Any transport condition under, make three in background technology to react and fully carry out, to be substantially reduced the harm gas in tail gas.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and Within principle, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.

Claims (2)

  1. A kind of 1. double-stage high-efficient reduced form ternary catalyzing unit, it is characterised in that：One stage catalyzing device including front and rear connection（1）, two Level catalyst converter（2）；The catalyst converter includes housing and the reaction chamber surrounded by housing, and honeycomb catalyst is filled up in the reaction chamber Support（11、21）, the catalytic support（11、21）Surface is coated with three-way catalyst；The one-level, two level catalyst converter（1、2） Between by one section of communicating pipe（3）Connection, the communicating pipe（3）One is provided with by the check valve in point tube outside pipe（4）；
    The one stage catalyzing device（1）Front end be also connected with an oxygen filter（6）, for eliminating the oxygen in motor exhaust Gas；The oxygen filter（5）Connect automobile exhaust pipeline；
    Oxygen scavenger is used as using iron powder inside the oxygen filter；
    The oxygen filter（6）Include an impeller（61）, the impeller（61）Can be continuous under the promotion of exhaust airstream Rotation, the impeller（61）Blade face by being formed through magnetized web plate, the iron powder is piled up in the impeller（61）Lower section.
  2. 2. double-stage high-efficient reduced form ternary catalyzing unit according to claim 1, it is characterised in that：The one stage catalyzing device （1）Inlet end in be provided with an oxygen sensor（5）, the oxygen sensor（5）It is electrically coupled to automotive engine control System.
CN201610002269.2A 2016-01-06 2016-01-06 Double-stage high-efficient reduced form ternary catalyzing unit Expired - Fee Related CN105587387B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610002269.2A CN105587387B (en) 2016-01-06 2016-01-06 Double-stage high-efficient reduced form ternary catalyzing unit

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Application Number Priority Date Filing Date Title
CN201610002269.2A CN105587387B (en) 2016-01-06 2016-01-06 Double-stage high-efficient reduced form ternary catalyzing unit

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CN105587387B true CN105587387B (en) 2018-02-02

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108019768A (en) * 2017-11-07 2018-05-11 哈尔滨理工大学 A kind of two-stage type gas heater flue gas processing device
CN112901317A (en) * 2021-03-16 2021-06-04 安徽江淮汽车集团股份有限公司 Three way catalyst converter packaging structure, engine assembly and car

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3732301C1 (en) * 1987-09-25 1989-05-18 Comuna Metall Vorrichtungs Und Emission control device for an internal combustion engine
JPH11247654A (en) * 1998-03-04 1999-09-14 Nissan Motor Co Ltd Exhaust emission control device using nox stored and reduced type three-way catalyst
US6122909A (en) * 1998-09-29 2000-09-26 Lynntech, Inc. Catalytic reduction of emissions from internal combustion engines
EP1152140A2 (en) * 2000-05-02 2001-11-07 Nissan Motor Co., Ltd. Exhaust gas purifying system of internal combustion engine
GB2379895A (en) * 2001-06-19 2003-03-26 Ford Global Tech Inc A method and system for controlling an emission device
US6722125B1 (en) * 1998-04-11 2004-04-20 Audi Ag Method for operating an internal combustion engine
JP2004148190A (en) * 2002-10-30 2004-05-27 Nissan Motor Co Ltd Catalyst system for purifying exhaust gas

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3870749B2 (en) * 2001-01-16 2007-01-24 株式会社デンソー Exhaust gas purification device for internal combustion engine
US20080072578A1 (en) * 2006-09-21 2008-03-27 Kumar Sanath V Treatment Systems and Methods for Internal Combustion Engine Exhaust Streams

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3732301C1 (en) * 1987-09-25 1989-05-18 Comuna Metall Vorrichtungs Und Emission control device for an internal combustion engine
JPH11247654A (en) * 1998-03-04 1999-09-14 Nissan Motor Co Ltd Exhaust emission control device using nox stored and reduced type three-way catalyst
US6722125B1 (en) * 1998-04-11 2004-04-20 Audi Ag Method for operating an internal combustion engine
US6122909A (en) * 1998-09-29 2000-09-26 Lynntech, Inc. Catalytic reduction of emissions from internal combustion engines
EP1152140A2 (en) * 2000-05-02 2001-11-07 Nissan Motor Co., Ltd. Exhaust gas purifying system of internal combustion engine
GB2379895A (en) * 2001-06-19 2003-03-26 Ford Global Tech Inc A method and system for controlling an emission device
JP2004148190A (en) * 2002-10-30 2004-05-27 Nissan Motor Co Ltd Catalyst system for purifying exhaust gas

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Legal Events

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C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
CB03 Change of inventor or designer information

Inventor after: Chen Yanfeng

Inventor before: Gu Yufeng

CB03 Change of inventor or designer information
TA01 Transfer of patent application right

Effective date of registration: 20180111

Address after: No. 2, Yu Zuo Chang Mei Road, Jiangbei District, Chongqing City, Chongqing

Applicant after: Katcon (Chongqing) Emission Control Systems Co.

Address before: 215000 Suzhou City, Xiangcheng District Province, the town of yuan and Qi Lu Road, No. 402, room 1, 47

Applicant before: Gu Yufeng

TA01 Transfer of patent application right
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GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20180202

Termination date: 20200106

CF01 Termination of patent right due to non-payment of annual fee