WO2004104382A1 - Regeneration process for catalytic converters - Google Patents

Regeneration process for catalytic converters Download PDF

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Publication number
WO2004104382A1
WO2004104382A1 PCT/IT2004/000266 IT2004000266W WO2004104382A1 WO 2004104382 A1 WO2004104382 A1 WO 2004104382A1 IT 2004000266 W IT2004000266 W IT 2004000266W WO 2004104382 A1 WO2004104382 A1 WO 2004104382A1
Authority
WO
WIPO (PCT)
Prior art keywords
coiled
catalytic
unit
converter
previous
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.)
Ceased
Application number
PCT/IT2004/000266
Other languages
English (en)
French (fr)
Inventor
Marco Loiola
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP04732724A priority Critical patent/EP1723321B1/en
Priority to BRPI0410560-5A priority patent/BRPI0410560A/pt
Priority to DE602004018689T priority patent/DE602004018689D1/de
Priority to AU2004242003A priority patent/AU2004242003A1/en
Priority to US10/557,880 priority patent/US20070006438A1/en
Priority to JP2006531024A priority patent/JP2007500818A/ja
Publication of WO2004104382A1 publication Critical patent/WO2004104382A1/en
Priority to IL172081A priority patent/IL172081A0/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
    • 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
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • 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
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1888—Construction facilitating manufacture, assembly, or disassembly the housing of the assembly consisting of two or more parts, e.g. two half-shells
    • F01N13/1894—Construction facilitating manufacture, assembly, or disassembly the housing of the assembly consisting of two or more parts, e.g. two half-shells the parts being assembled in longitudinal direction
    • 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
    • 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
    • F01N3/2839—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration
    • 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
    • F01N3/2839—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration
    • F01N3/2842—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration specially adapted for monolithic supports, e.g. of honeycomb type
    • 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
    • F01N2330/00—Structure of catalyst support or particle filter
    • F01N2330/02—Metallic plates or honeycombs, e.g. superposed or rolled-up corrugated or otherwise deformed sheet metal
    • 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
    • F01N2330/00—Structure of catalyst support or particle filter
    • F01N2330/02—Metallic plates or honeycombs, e.g. superposed or rolled-up corrugated or otherwise deformed sheet metal
    • F01N2330/04—Methods of manufacturing
    • 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
    • F01N2330/00—Structure of catalyst support or particle filter
    • F01N2330/30—Honeycomb supports characterised by their structural details
    • F01N2330/48—Honeycomb supports characterised by their structural details characterised by the number of flow passages, e.g. cell density
    • 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
    • F01N2350/00—Arrangements for fitting catalyst support or particle filter element in the housing
    • 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
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/22—Methods or apparatus for fitting, inserting or repairing different elements by welding or brazing
    • 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
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/24—Methods or apparatus for fitting, inserting or repairing different elements by bolts, screws, rivets or the like
    • 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
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/30—Removable or rechangeable blocks or cartridges, e.g. for filters
    • 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
    • F01N2510/00—Surface coverings
    • F01N2510/06—Surface coverings for exhaust purification, e.g. catalytic reaction
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49345—Catalytic device making
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49718—Repairing
    • Y10T29/49721—Repairing with disassembling
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49718—Repairing
    • Y10T29/49721—Repairing with disassembling
    • Y10T29/4973—Replacing of defective part
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49718—Repairing
    • Y10T29/49732—Repairing by attaching repair preform, e.g., remaking, restoring, or patching
    • Y10T29/49734—Repairing by attaching repair preform, e.g., remaking, restoring, or patching and removing damaged material

Definitions

  • This invention describes a method of regenerating run-down catalytic converters. It's a known fact that cars, industrial vehicles, earthmovers and generally all vehicles with an i. c. engine, are equipped with an exhaust system to eliminate the exhaust fumes, which consists of various parts. In a car for example, the exhaust system is made of:
  • This invention is only about the catalytic converter.
  • the vehicles with internal combustion engines are equipped by the manufacturing company with a specific catalytic converter, its characteristics especially depend on the type of engine used.
  • a catalytic converter is composed of a stainless steel casing, with a steel or cordierite monolith placed inside (catalytic unit), whose use is to destroy the pollutants contained in exhaust fumes.
  • catalytic unit An example of catalytic unit is described in the patent IT2001A19.
  • the actual catalytic part which is enclosed in the steel shell, is linked with welded joints to the rest of the exhaust system (the manifold and the silencer) by fittings, pipes and flange joints, which differ in shape and length.
  • the regeneration of a used converter currently means the substitution of the catalytic block, that is the substitution of the part of the converter, which houses the monolith.
  • the operation must be done either with the piece still installed on the vehicle or with the piece locked at the two ends on a clamp template. Using a saw or an abrasive disk the catalytic block made of monolith plus its cone fittings is then cut and substituted with a new ceramic or metallic unit. Depending on how the work is carried out, the results of the operation may differ. The aesthetic result cannot always be good because the match of the new catalyst isn't always easy, especially when the catalyst and the converter are part of the same block, which may affect its working order.
  • the aim of this invention is to propose a simple and cheap way of regenerating exhausted converters (in which the catalyst power has been worn out) and to recondition the ones that are no longer efficient (where the internal monolith is broken or non existent).
  • the run-down catalyst is sectioned on one side perpendicularly to its axis, in a convenient spot either where the section and the shape of the monolith are even or where it's easier to extract its content (fig 1).
  • the converter is then emptied completely of its inside components.
  • the ceramic part (the monolith) which may sometimes be broken or partly non existent or the catalytic metallic part is taken out and sent to be recycled (to re-use the precious metals which are still inside) (fig 2 - 3).
  • the inside part is carefully cleaned of any residue and filled with a new catalytic unit obtained by overlapping and coiling two metal sheets, one.smooth and one corrugated, both coated in washcoat and permeated with other noble metals following well-known techniques, (fig 4)
  • a variation on this method could be done by inserting in the casing a coiled unit (starting with) bands treated only with washcoat, which will then be permeated with precious metals.
  • the new catalyst unit is then fixed to the original casing with a number of pins, rivets, rods or fittings (fig 5).
  • the coiled bands must be prevented from rotating and moving with respect to the converter axis.
  • the welding can be done either with a continuous electrode welder or with a TIG welder. By using the latter, the aesthetic result will be definitely better as there will be no trace left of the join.
  • the converter is finely sanded in order to eUrninate the oxide on the surface. This operation is optional and gives back the piece its original shine. The advantage of this technique is obvious.
  • the reconditioning that is the regeneration of the converter, only requires catalytic bands of standard production (with two or three sizes all converters can be overhauled) or at the most catalytic units of standard form and dimension.
  • the reconditioning transforms the original ceramic piece at 400 cpsi (cells per square inch) into a steel indestructible converter, which cannot be broken (while ceramic is very fragile). After all the regeneration with a ceramic monolith is very difficult to carry out and the result is uneconomic as ceramic catalytic units are both rigid and fragile.
  • the new catalyst can be made using bands of 400 cpsi but also of 200 and 100 cpsi and generally bands of any number of cells. It is well known that by varying the number of cells the opposite resistance of the catalyser changes when the gases pass through and consequently the engine performance changes. This technique can be favourable also in case of sports cars. It's possible to regenerate the catalyst by either returning to its original operational features or by giving it higher sports specifications in terms of performance.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Toxicology (AREA)
  • Health & Medical Sciences (AREA)
  • Catalysts (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Details Of Television Systems (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Stereophonic System (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
PCT/IT2004/000266 2003-05-22 2004-05-13 Regeneration process for catalytic converters Ceased WO2004104382A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP04732724A EP1723321B1 (en) 2003-05-22 2004-05-13 Regeneration process for catalytic converters
BRPI0410560-5A BRPI0410560A (pt) 2003-05-22 2004-05-13 método de recuperação de conversores catalìticos gastos ou que deixaram de ser eficazes
DE602004018689T DE602004018689D1 (de) 2003-05-22 2004-05-13 Verfahren zum regenerieren von katalysatoren
AU2004242003A AU2004242003A1 (en) 2003-05-22 2004-05-13 Regeneration process for catalytic converters
US10/557,880 US20070006438A1 (en) 2003-05-22 2004-05-13 Regeneration process for catalytic converters
JP2006531024A JP2007500818A (ja) 2003-05-22 2004-05-13 触媒コンバータの再生方法
IL172081A IL172081A0 (en) 2003-05-22 2005-11-21 Regeneration process for catalytic converters

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000080A ITTV20030080A1 (it) 2003-05-22 2003-05-22 Procedimento di rigenerazione per convertitori catalici.
ITTV2003A000080 2003-05-22

Publications (1)

Publication Number Publication Date
WO2004104382A1 true WO2004104382A1 (en) 2004-12-02

Family

ID=33463071

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2004/000266 Ceased WO2004104382A1 (en) 2003-05-22 2004-05-13 Regeneration process for catalytic converters

Country Status (12)

Country Link
US (1) US20070006438A1 (https=)
EP (1) EP1723321B1 (https=)
JP (1) JP2007500818A (https=)
CN (1) CN1849442A (https=)
AT (1) ATE418671T1 (https=)
AU (1) AU2004242003A1 (https=)
BR (1) BRPI0410560A (https=)
DE (1) DE602004018689D1 (https=)
IL (1) IL172081A0 (https=)
IT (1) ITTV20030080A1 (https=)
RU (1) RU2005139894A (https=)
WO (1) WO2004104382A1 (https=)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7441332B2 (en) * 2003-12-11 2008-10-28 The Chugoku Electric Power Co., Inc. Method for restoring performance capabilities of exhaust gas treatment apparatus
US7875102B2 (en) 2008-04-02 2011-01-25 Corning Incorporated Method for managing the use of flow-through monolithic sorbents for the sorption of a trace contaminant from a fluid stream
EP3511541B1 (en) * 2018-01-15 2021-11-03 AM Group Redback AB Catalytic converter for classic cars

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20070497A1 (it) * 2007-07-09 2009-01-10 Bartolomeo Decarolis Procedimento di rigenerazione per catalizzatori e filtri antiparticolato
WO2011034450A1 (en) 2009-09-21 2011-03-24 Patrick David Maguire Improvements in and relating to support systems
CN103143923B (zh) * 2013-03-19 2015-02-18 无锡威孚力达催化净化器有限责任公司 Poc载体封装高速穿孔机
CN104476111B (zh) * 2014-10-21 2017-01-18 宁波思明汽车科技有限公司 汽车尾喉管件加工方法
US10058873B1 (en) * 2016-05-11 2018-08-28 Michael D Barber Process for safe deconstruction and recycling of catalytic converters
CN116638467B (zh) * 2023-06-07 2026-02-27 厦门富华顺节能科技有限公司 一种循环利用三元催化器壳体的加工方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3889464A (en) * 1973-12-20 1975-06-17 Conrad O Gardner Exhaust emission control systems and devices
WO2001096716A2 (fr) * 2000-06-16 2001-12-20 Faurecia Systemes D'echappement Procede et dispositif de nettoyage d'un filtre a particules

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Publication number Priority date Publication date Assignee Title
US5207807A (en) * 1986-12-05 1993-05-04 Iveco Fiat S.P.A. Regenerable filter for exhaust gases of an internal-combustion engine
JPH02180642A (ja) * 1988-12-30 1990-07-13 Aichi Steel Works Ltd 触媒用ハニカム構造体
JPH04187247A (ja) * 1990-11-20 1992-07-03 Toyota Motor Corp 排気ガス浄化用触媒の製造方法
JPH0693850A (ja) * 1992-09-11 1994-04-05 Hitachi Ltd 収納容器
US5434374A (en) * 1993-12-01 1995-07-18 Hsueh; Tien-Chu Detachable filter and muffler device
JPH09170430A (ja) * 1995-12-21 1997-06-30 Cataler Kogyo Kk 触媒コンバータ
JP4171939B2 (ja) * 1998-07-27 2008-10-29 トヨタ自動車株式会社 触媒コンバータの製造方法
JP3601577B2 (ja) * 1998-12-15 2004-12-15 トヨタ自動車株式会社 触媒コンバータ容器の製造方法およびその製造装置
US6837335B2 (en) * 2002-01-31 2005-01-04 Mtd Products Inc Replaceable catalyst for exhaust system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3889464A (en) * 1973-12-20 1975-06-17 Conrad O Gardner Exhaust emission control systems and devices
WO2001096716A2 (fr) * 2000-06-16 2001-12-20 Faurecia Systemes D'echappement Procede et dispositif de nettoyage d'un filtre a particules

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7441332B2 (en) * 2003-12-11 2008-10-28 The Chugoku Electric Power Co., Inc. Method for restoring performance capabilities of exhaust gas treatment apparatus
US7875102B2 (en) 2008-04-02 2011-01-25 Corning Incorporated Method for managing the use of flow-through monolithic sorbents for the sorption of a trace contaminant from a fluid stream
EP3511541B1 (en) * 2018-01-15 2021-11-03 AM Group Redback AB Catalytic converter for classic cars

Also Published As

Publication number Publication date
IL172081A0 (en) 2009-02-11
EP1723321B1 (en) 2008-12-24
ATE418671T1 (de) 2009-01-15
ITTV20030080A1 (it) 2004-11-23
RU2005139894A (ru) 2006-06-10
US20070006438A1 (en) 2007-01-11
DE602004018689D1 (de) 2009-02-05
BRPI0410560A (pt) 2006-06-20
AU2004242003A1 (en) 2004-12-02
JP2007500818A (ja) 2007-01-18
CN1849442A (zh) 2006-10-18
EP1723321A1 (en) 2006-11-22

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