EP0233509A1 - Vorrichtung zur Halterung von Monolithkatalysatoren - Google Patents
Vorrichtung zur Halterung von Monolithkatalysatoren Download PDFInfo
- Publication number
- EP0233509A1 EP0233509A1 EP87100966A EP87100966A EP0233509A1 EP 0233509 A1 EP0233509 A1 EP 0233509A1 EP 87100966 A EP87100966 A EP 87100966A EP 87100966 A EP87100966 A EP 87100966A EP 0233509 A1 EP0233509 A1 EP 0233509A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- catalyst element
- buffer sleeve
- face
- catalyst
- frame
- 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.)
- Granted
Links
- 239000003054 catalyst Substances 0.000 title claims abstract description 27
- 239000002184 metal Substances 0.000 claims abstract description 10
- 239000000919 ceramic Substances 0.000 claims abstract description 7
- 239000011324 bead Substances 0.000 claims description 4
- 210000002105 tongue Anatomy 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 230000003197 catalytic effect Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 239000002557 mineral fiber Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
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
- F01N3/2839—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration
- F01N3/2853—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration using mats or gaskets between catalyst body and housing
- F01N3/2857—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration using mats or gaskets between catalyst body and housing the mats or gaskets being at least partially made of intumescent material, e.g. unexpanded vermiculite
-
- 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
- F01N3/2875—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration by using elastic means, e.g. spring leaves, for retaining catalyst body 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
- F01N2350/00—Arrangements for fitting catalyst support or particle filter element in the housing
- F01N2350/02—Fitting ceramic monoliths in a metallic housing
- F01N2350/06—Fitting ceramic monoliths in a metallic housing with means preventing gas flow by-pass or leakage
Definitions
- the innovation relates to a device for holding square, z. B. square or rectangular monolithic ceramic catalyst elements to reduce pollutant emissions from combustion plants, for. B. combustion plants for thermal power plants, and to combine such catalyst elements into a package.
- Ceramic monoliths require secure and shock-absorbing fastening because of their risk of breakage under extreme operating conditions (vibrations, pressure surges, temperature changes). Since they can not be produced in any size, there is still the need to combine several elements in a battery to the z. B. in power plant emissions per unit of time flowing large gas volumes.
- the buffer sleeve can e.g. B. consist of mineral fiber, ceramic fiber, wire mesh or other temperature-resistant elastic materials. After it has been pushed onto the monolith from its end face (s), the metal frame is pushed over the sleeve, whereby the elastic sleeve can be compressed. This compression can also be achieved or reinforced by a sleeve material that expands once when heated. Such a material is e.g. B. a so-called expanded mica mat, as z. B. is sold by the company 3M under the name INTERAM®.
- the required heat treatment can be carried out after installation or only in operation by exposure to hot exhaust gases, e.g. B. a hot flue gas can be made.
- the frame is provided on one end face with securing stops which engage around the end face of the catalyst and thus prevent axial displacement of the catalyst element by positive locking.
- the metal frame on its end face projects inwards with the formation of a continuous stop or a stop divided into a plurality of “tongues” for an edge zone of the end face of the catalyst element.
- the combination of buffer sleeve and metal frame can therefore be provided for attachment to at least one end section of the catalyst element.
- the left designed as an exploded drawing, shows a 1 m long monolithic ceramic catalyst element 1 of square cross-section (edge length 150 mm), which is traversed over its entire length by numerous square flow channels, in which the exhaust gas to be treated flows and comes into contact with the catalyst .
- This can be a material component of the element or can be present as a coating on the ceramic material of the element.
- a 3 cm long buffer sleeve 2 made of elastic wire mesh with a slightly smaller free inner cross-section than the end face of the monolith (149 mm ⁇ 149 mm) is forced onto the latter in such a way that its outer end face ends flush with the end face of the monolith.
- a 3 cm deep frame 3 made of temperature-resistant steel corresponds to the outer shape of the monolith and sleeve and has a slightly smaller inner free cross-section than the sum of the end faces of the catalyst element and buffer sleeve (158 mm ⁇ 158 mm). It is provided on two adjacent side surfaces with rectangular recesses 4 in a matching shape and arrangement (dimensions 10 mm ⁇ 100 mm). The two remaining side surfaces are provided with rectangular projections 5, which can positively engage in the above-described recesses in adjacent frames of a package of held catalyst elements.
- material V2A temperature-resistant steel
- a stop plate 6 Attached to the outer edge of the metal frame is a stop plate 6 protruding 6 mm inwards perpendicularly to the side surface and supporting the edge zone of the monolith end face.
- the frame is forced over the buffer sleeve during assembly and pushed onto it until the stop plates come into contact with the monolith face.
- the monolith provided with the holding device at both ends can then be put together with other equally equipped monoliths via the tongue and groove connection 4/5 to form a catalyst package.
- FIG. 2 shows the projection views onto the catalytic converter element 1, a buffer sleeve 2 and onto a frame 3.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Health & Medical Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
- Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Crushing And Grinding (AREA)
Abstract
Description
- Die Neuerung betrifft eine Vorrichtung zur Halterung von viereckigen, z. B. quadratischen oder rechteckigen monolithischen keramischen Katalysatorelementen zur Herabsetzung des Schadstoffausstoßes von Verbrennungsanlagen, z. B. Feuerungsanlagen für Wärmekraftwerke, sowie zur Zusammenfassung solcher Katalysatorelemente zu einem Paket.
- Keramische Monolithen erfordern wegen ihrer Bruchgefährdung unter extremen Betriebsbedingungen (Erschütterungen, Druckstöße, Temperaturwechsel) eine sichere und stoßabsorbierende Befestigung. Da sie nicht in beliebiger Größe herstellbar sind, besteht weiterhin die Notwendigkeit, mehrere Elemente in einer Batterie zusammenzufassen, um die z. B. bei Kraftwerksabgasen pro Zeiteinheit strömenden großen Gasvolumina durchsetzen zu können.
- Gemäß der Neuerung ist eine Vorrichtung zur Halterung von zur Abgasnachbehandlung von Verbrennungsanlagen verwendeten viereckigen monolithischen keramischen Katalysatorelementen sowie zur Zusammenfassung derselben zu einem Paket gekennzeichnet durch
- a) eine der äußeren Form des Katalysatorelements entsprechende und formschlüssig auf dieses aufschiebbare elastische Puffermanschette
- b) einen der äußeren Form von Katalysatorelement und Puffermanschette entsprechenden, die Puffermanschette umgreifenden Metallrahmen, dessen innerer freier Querschnitt größer als die Stirnfläche des Katalysatorelements und kleiner als die Summe der Stirnflächen von Katalysatorelement und Puffermanschette oder gleich der Summe dieser Stirnflächen ist, wobei
- c) die Rahmentiefe und die Länge der Puffermanschette mindestens 1/50 der Länge des Katalysatorelements entsprechen und
- d) jeweils zwei benachbarte Seitenflächen des Rahmens in symmetrischer Anordnung Ausnehmungen bzw. nach innen springende Sicken aufweisen und die beiden übrigen Seitenflächen Vorsprünge aufweisen, die formschlüssig in die Ausnehmungen bzw. Sicken benachbarter Rahmen eingreifen können.
- Die Puffermanschette kann z. B. aus Mineralfaser, Keramikfaser, Drahtgestrick oder anderen temperaturfesten elastischen Werkstoffen bestehen. Nachdem sie auf den Monolithen von dessen Stirnseite(n) her aufgeschoben ist, wird der Metallrahmen über die Manschette geschoben, wobei die elastische Manschette verdichtet werden kann. Diese Verdichtung kann auch durch ein Manschettenmaterial, welches sich bei Erwärmung einmalig ausdehnt, erreicht oder verstärkt werden. Ein solches Material ist z. B. eine sog. Blähglimmermatte, wie sie z. B. von der Firma 3M unter der Bezeichnung INTERAM® vertrieben wird. Die erforderliche Wärmebehandlung kann nach der Montage oder aber auch erst im Betrieb durch Beaufschlagung mit heißen Abgasen, z. B. ein heißes Rauchgas, vorgenommen werden.
- Soll der Katalysator Betriebsbedingungen ausgesetzt werden, denen die reibschlüssige Verbindung zwischen Monolith und Puffermanschette einerseits und Puffermanschette und Metallrahmen andererseits nicht gewachsen sein könnte, so wird der Rahmen an einer Stirnseite mit Sicherungsanschlägen versehen, welche die Katalysatorstirnfläche am Rand umgreifen und damit durch Formschluß eine axiale Verschiebung des Katalysatorelements verhindern.
- Gemäß einer vorteilhaften Ausführungsform der Neuerung springt also der Metallrahmen an seiner Stirnseite nach innen unter Ausbildung eines durchgehenden oder in mehrere "Zungen" aufgeteilten Anschlags für eine Randzone der Stirnfläche des Katalysatorelements vor.
- Bei vertikal stehenden kürzeren Katalysatorelementen genügt es oft schon, das Katalysatorelement nur in seinem unteren Abschnitt zu haltern. Bei längeren Elementen, stärkerer Beanspruchung oder horizontaler Anbringung der Elemente ist jedoch eine beidseitige Halterung ratsam.
- Gemäß der Neuerung kann also die Kombination aus Puffermanschette und Metallrahmen für eine Anbringung an mindestens einem Endabschnitt des Katalysatorelements vorgesehen sein.
- Die Neuerung wird nachfolgend anhand einer vorteilhaften Ausführungsvariante in Verbindung mit der einzigen Figur der Zeichnung weiter erläutert.
- Die linke als Explosionszeichnung gestaltete Figur 1 zeigt ein 1 m langes monolithisches keramisches Katalysatorelement 1 von quadratischem Querschnitt (Kantenlänge 150 mm), welches über seine Gesamtlänge von zahlreichen quadratischen Strömungskanälen durchzogen wird, in welchen das zu behandelnde Abgas strömt und mit dem Katalysator in Berührung kommt. Dieser kann stofflicher Bestandteil des Elements sein oder auf dem keramischen Werkstoff des Elements als Beschichtung vorliegen.
- Eine 3 cm lange Puffermanschette 2 aus elastischem Drahtgestrick mit geringfügig kleinerem freien inneren Querschnitt als die Stirnfläche des Monolithen (149 mm × 149 mm) wird auf letzteren so aufgezwängt, daß ihre äußere Stirnfläche bündig mit der Stirnfläche des Monolithen endigt.
- Ein 3 cm tiefer Rahmen 3 aus temperaturfestem Stahl (z.B. Werkstoff V2A) entspricht der äußeren Form von Monolith und Manschette und hat einen etwas geringeren inneren freien Querschnitt als die Summe der Stirnflächen von Katalysatorelement und Puffermanschette (158 mm × 158 mm). Er ist an zwei benachbarten Seitenflächen mit rechteckigen Ausnehmungen 4 in übereinstimmender Form und Anordnung versehen (Abmessung 10 mm × 100 mm). Die beiden übrigen Seitenflächen sind mit rechteckigen Vorsprüngen 5 versehen, die formschlüssig in die oben beschriebenen Ausnehmungen benachbarter Rahmen eines Pakets gehalterter Katalysatorelemente eingreifen können.
- Am äußeren Rand des Metallrahmens ist pro Rahmenseite jeweils ein senkrecht zur Seitenfläche 6 mm nach innen ragendes und die Randzone der Monolithstirnfläche stützendes Anschlagblech 6 angebracht.
- Der Rahmen wird bei der Montage über die Puffermanschette gezwängt und soweit auf sie aufgeschoben, bis die Anschlagbleche in Kontakt mit der Monolith-Stirnfläche kommen.
- Der an beiden Enden mit der Halterungsvorrichtung versehene Monolith kann dann mit anderen ebenso ausgerüsteten Monolithen über die Nut/Feder-Verbindung 4/5 zu einem Katalysatorpaket zusammengesteckt werden.
- Die rechte Figur 2 zeigt die Projektionsansichten auf das Katalysatorelement 1, eine Puffermanschette 2 und auf einen Rahmen 3.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT87100966T ATE41204T1 (de) | 1986-02-01 | 1987-01-23 | Vorrichtung zur halterung von monolithkatalysatoren. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE8602600U DE8602600U1 (de) | 1986-02-01 | 1986-02-01 | Vorrichtung zur Halterung von Monolithkatalysatoren |
DE8602600U | 1986-02-01 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0233509A1 true EP0233509A1 (de) | 1987-08-26 |
EP0233509B1 EP0233509B1 (de) | 1989-03-08 |
Family
ID=6791173
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP87100966A Expired EP0233509B1 (de) | 1986-02-01 | 1987-01-23 | Vorrichtung zur Halterung von Monolithkatalysatoren |
Country Status (7)
Country | Link |
---|---|
US (1) | US4859428A (de) |
EP (1) | EP0233509B1 (de) |
JP (1) | JPH0417217Y2 (de) |
AT (1) | ATE41204T1 (de) |
DE (2) | DE8602600U1 (de) |
ES (1) | ES2000116B3 (de) |
GR (2) | GR880300024T1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2660966A1 (fr) * | 1990-04-13 | 1991-10-18 | Gilardini Spa | Convertisseur catalytique pour vehicules, en particulier pour vehicules automobiles. |
EP0501733A1 (de) * | 1991-02-25 | 1992-09-02 | Ngk Insulators, Ltd. | Abgasentgiftungsanlage |
EP0635626A1 (de) * | 1993-07-07 | 1995-01-25 | LEISTRITZ AG & CO. Abgastechnik | Abgaskonverter |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE9013655U1 (de) * | 1990-09-28 | 1990-12-06 | L. & C. Steinmüller GmbH, 5270 Gummersbach | Katalysatorkorbbaugruppe |
DE19820426C1 (de) * | 1998-05-07 | 2000-03-16 | Siemens Ag | Katalysatormodul |
US20090293464A1 (en) * | 2008-05-30 | 2009-12-03 | Caterpillar Inc. | Assembly and method of assembly for exhaust treatment |
US20110030355A1 (en) * | 2009-08-10 | 2011-02-10 | Vconverter Company | Catalytic Converter and Process of Manufacture |
US10024216B2 (en) | 2016-12-15 | 2018-07-17 | Caterpillar Inc. | Retention system for aftertreatment module |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1515158A (fr) * | 1967-01-17 | 1968-03-01 | Sfec | Perfectionnements aux supports des catalyseurs |
FR2211041A5 (de) * | 1972-12-16 | 1974-07-12 | Eberspaecher J | |
FR2284028A1 (fr) * | 1974-09-05 | 1976-04-02 | Daimler Benz Ag | Dispositif pour l'epuration catalytique des gaz d'echappement de moteurs a combustion interne, en particulier de moteurs de vehicules automobiles |
US4238455A (en) * | 1978-06-27 | 1980-12-09 | Ishikawajima-Harima Jukogyo Kabushiki Kaisha | Denitrification reactor |
DE3046921A1 (de) * | 1979-12-13 | 1981-09-17 | Mitsubishi Jukogyo K.K., Tokyo | Rechteckige gebuendelte festkoerperkatalysatoranordnung |
US4294806A (en) * | 1979-02-14 | 1981-10-13 | Sakai Chemical Industry Co., Ltd. | Method for preventing the wear of a monolithic catalyst by dusts |
EP0172396A2 (de) * | 1984-08-22 | 1986-02-26 | Didier-Werke Ag | Katalysator zum Abscheiden von Stickoxiden aus Verbrennungsabgasen |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1426196A (en) * | 1921-12-14 | 1922-08-15 | Midwest Steel And Supply Compa | Filter |
CH343762A (de) * | 1956-03-06 | 1959-12-31 | Schirp Wolfgang | Filter für die Reinigung von Gasen, speziell von Luft |
US3487625A (en) * | 1966-01-17 | 1970-01-06 | Saint Gobain Techn Nouvelles | Filter |
US3721067A (en) * | 1970-11-12 | 1973-03-20 | B Agnew | Clean air system for hospital operating rooms |
US4048363A (en) * | 1976-06-16 | 1977-09-13 | Minnesota Mining And Manufacturing Company | Offset laminated intumescent mounting mat |
ZA804936B (en) * | 1979-08-22 | 1981-09-30 | Nat Res Dev | Hydraulic cements |
US4335023A (en) * | 1980-01-24 | 1982-06-15 | Engelhard Corporation | Monolithic catalyst member and support therefor |
JPS6017217Y2 (ja) * | 1980-05-19 | 1985-05-27 | 三菱重工業株式会社 | 固気接触反応装置 |
US4419108A (en) * | 1982-02-22 | 1983-12-06 | Corning Glass Works | Filter apparatus and method of filtering |
US4462812A (en) * | 1982-12-08 | 1984-07-31 | General Motors Corporation | Ceramic monolith particulate trap including filter support |
DE3330132A1 (de) * | 1983-08-20 | 1985-02-28 | H. Krantz Gmbh & Co, 5100 Aachen | Rahmen |
US4663934A (en) * | 1985-04-01 | 1987-05-12 | Arvin Industries, Inc. | Manifold exhaust processor |
US4636232A (en) * | 1985-12-16 | 1987-01-13 | Amway Corporation | Filter stack |
-
1986
- 1986-02-01 DE DE8602600U patent/DE8602600U1/de not_active Expired
-
1987
- 1987-01-23 ES ES87100966T patent/ES2000116B3/es not_active Expired - Lifetime
- 1987-01-23 EP EP87100966A patent/EP0233509B1/de not_active Expired
- 1987-01-23 DE DE8787100966T patent/DE3760059D1/de not_active Expired
- 1987-01-23 AT AT87100966T patent/ATE41204T1/de not_active IP Right Cessation
- 1987-01-28 US US07/007,884 patent/US4859428A/en not_active Expired - Fee Related
- 1987-01-30 JP JP1987011588U patent/JPH0417217Y2/ja not_active Expired
-
1988
- 1988-05-20 GR GR88300024T patent/GR880300024T1/el unknown
-
1989
- 1989-06-08 GR GR89400029T patent/GR3000038T3/el unknown
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1515158A (fr) * | 1967-01-17 | 1968-03-01 | Sfec | Perfectionnements aux supports des catalyseurs |
FR2211041A5 (de) * | 1972-12-16 | 1974-07-12 | Eberspaecher J | |
FR2284028A1 (fr) * | 1974-09-05 | 1976-04-02 | Daimler Benz Ag | Dispositif pour l'epuration catalytique des gaz d'echappement de moteurs a combustion interne, en particulier de moteurs de vehicules automobiles |
US4238455A (en) * | 1978-06-27 | 1980-12-09 | Ishikawajima-Harima Jukogyo Kabushiki Kaisha | Denitrification reactor |
US4294806A (en) * | 1979-02-14 | 1981-10-13 | Sakai Chemical Industry Co., Ltd. | Method for preventing the wear of a monolithic catalyst by dusts |
DE3046921A1 (de) * | 1979-12-13 | 1981-09-17 | Mitsubishi Jukogyo K.K., Tokyo | Rechteckige gebuendelte festkoerperkatalysatoranordnung |
EP0172396A2 (de) * | 1984-08-22 | 1986-02-26 | Didier-Werke Ag | Katalysator zum Abscheiden von Stickoxiden aus Verbrennungsabgasen |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN, Band 3, Nr. 126 (M-77), 20. Oktober 1979, 36 M 77; & JP-A-54 102 414 (HONDA GIKEN KOGYO K.K.) 08-11-1979 * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2660966A1 (fr) * | 1990-04-13 | 1991-10-18 | Gilardini Spa | Convertisseur catalytique pour vehicules, en particulier pour vehicules automobiles. |
ES2043480A1 (es) * | 1990-04-13 | 1993-12-16 | Gilardini Spa | Convertidor catalitico para vehiculos, en particular autovehiculos. |
EP0501733A1 (de) * | 1991-02-25 | 1992-09-02 | Ngk Insulators, Ltd. | Abgasentgiftungsanlage |
US5228892A (en) * | 1991-02-25 | 1993-07-20 | Ngk Insulators, Ltd. | Exhaust emission control device |
EP0635626A1 (de) * | 1993-07-07 | 1995-01-25 | LEISTRITZ AG & CO. Abgastechnik | Abgaskonverter |
Also Published As
Publication number | Publication date |
---|---|
DE3760059D1 (en) | 1989-04-13 |
JPH0417217Y2 (de) | 1992-04-17 |
US4859428A (en) | 1989-08-22 |
EP0233509B1 (de) | 1989-03-08 |
JPS62126225U (de) | 1987-08-11 |
ES2000116B3 (es) | 1992-02-01 |
DE8602600U1 (de) | 1986-03-13 |
ATE41204T1 (de) | 1989-03-15 |
GR3000038T3 (en) | 1990-01-31 |
ES2000116A4 (es) | 1987-12-16 |
GR880300024T1 (en) | 1988-10-18 |
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