CA1322175C - Catalytic conversion device - Google Patents
Catalytic conversion deviceInfo
- Publication number
- CA1322175C CA1322175C CA000608798A CA608798A CA1322175C CA 1322175 C CA1322175 C CA 1322175C CA 000608798 A CA000608798 A CA 000608798A CA 608798 A CA608798 A CA 608798A CA 1322175 C CA1322175 C CA 1322175C
- Authority
- CA
- Canada
- Prior art keywords
- catalyst
- basket
- catalyst support
- inlet
- converter body
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9445—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC]
- B01D53/9454—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC] characterised by a specific device
-
- 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
- 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
- F01N2450/24—Methods or apparatus for fitting, inserting or repairing different elements by bolts, screws, rivets or the like
-
- 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
Abstract of the Disclosure A catalytic converter device is provided for use in connection with internal combustion engines, stationary turbines and steam boilers, in which a plurality of individual-ly framed and mesh-encased catalyst support tiles, are held in a single basket positioned within the body of the catalytic converter. The catalyst support tiles, individually framed and enclosed in steel mesh, enable the use of thin tiles to improve catalyst efficiency and to facilitate routine maintenance of the converter.
Description
1 3 2 21 7 ~ 3600/25034-CN
CATALY~IC CONVERSION DEVICE
Technical Field ~he present invent.ion relates generally to catalytic conversion devices used in combination with internal co~bustion engines, stationary turbines and steam boilers. The invention relates specifically to a device in which a stack of catalyst support tiles is u~ed to enhance catalyst activity and catalyst handlingO
Backaround of the In~ention The u6e of precious metal catalysts such as plati~um, palladium and rhodium to convert NOX and CO in effluent gases has generated an industry focussed on emission controls, Prior art emission control devices are typically con~igured to be inserted within the exhaust stream from internal combustion engines, turbînes and steam boilers. Ceramic catalyst supports : upon which the precious metals are deposited, are provided in bulk. The bulk catalyst support is used to introduce the active catalyst to the gaseous stre~n which flows through the catalyst support. Due to the varying temperature range experienced under engine operating conditions, there is cyclic expansion and contraction of the ceramic supports. This thermal cycling eventually leads to d gr~dation of the ceramic support, which in turn red~ces catalyst activity, and also leads to loose or broken ceramic pieces falling in-to the engine manifold, with o~vious deleterious effects. $
; : , ., . ~ :
~3~2~ 7~
The present invention provides a modular approach to catalyst support. Rather than providing a single bulk cata-lyst, the instant device utilizes a series of catalyst support tiles which are individually structurally supporked and which can ~e individually replaced. According to tha present invention, the ceramic catalyst support tiles are provided in preassembled steel frames and the tile faces are encased in steel mesh. This modular approach provides for easy main-tenance, increased performance, lower replacement cost, interchangeability and easy adjustments~
Catalytic converters need periodic cleaning to maintaln catalyst activity and to minimize any backpressure on the engine resulting from reduced flow capacities in the converter device. The cleaning process consists o~ removing the ceramic catalyst support and immersing the catalyst support in an acid solution. The present invention, which provides individually contained and structurally sound catalyst support tiles, has signiicant advantages over bulk catalysts. Since the instant catalyst support tiles are protected by a wire mesh and steel frame, no special holding tools are required to remove the catalyst support for cleaningO Further, the containment system of the present invention permits reuse of ceramic catalyst support tiles which may be broken or cracked. Bulk c~talyst supports, on the other hand, must be specially handled, and any broken catalyst support tiles must be replaced.
Individually framing catalyst support tiles also permits the use of a greater range of tile thicknesses.
Observed experience demonstrates that most catalytic reactions occur on the catalyst support tile surface. Therefore, catalyst performance is improved by stacking several thinner catalyst support tiles over the same total thickness as would be used in bulk catalyst support systems. The use of steel frames for edge structural support permits use of generally thinner catalyst tiles, at greatly improved overall catalyst efficiency.
During routin~ maintenance, the present invention also provides for lower replacement cost~ Experience has shown that ..
1322~ 73 the most permanent contamination is accu~nulated on the face of the first catalyst tile facing the inlet stream. After a certain period of use, the catalyst support tile has to be replaced due to clogged pores and reduced catalyst acti~ity.
The ability to use thinner catalyst support tiles permits replacement of the front catalyst support tile only, at reduced expense compared to the replacement of an unsupported thicker tile, as in the prior art devices.
Further, the modular approach of the instant invention permits interchangeability of the catalyst support tiles. The total quantity of catalyst required to effect conversion is proportional to the volume of exhaust flow from the emission source~ Due to the modular approach of the present invention, individually supported tiles can be easily mixed and exchanged from one catalytic conversion unit to another. If it is desired to use the same catalytic converter for a higher flow engine or boiler, capacity can be easily increased by the addition of catalyst support til~s ~ithout sacrificing perfor-mance. Similarly, catalyst support tiles can be removed to provide for reduced capacities.
Summar~ of the Invention It is an object of the present invention to provide a catalytic convertex device containing modular cataly~t support tiles.
It is an object of the present invention to provide a modular catalyst support system and catalytic converter which will protect the engine by preventing loose ceramic pieces from falling into the engine manifold.
It is another ob~ect of the present invention to provide a catalytic converter which protects against un-desirable catalyst loss in the engine exhaust by retaining the catalyst support tiles in a mesh enclosure.
It is a still further object o~ this invention to provide a catalytic converter which is easy to maintain since the catalyst support tiles which are contained within a structural support are easily handled without need for special ~ools.
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Another object of the present invention is to provide increased catalyst parformance by effectively increasing the available surface area of the catalyst presented to the incoming stream.
5It is an object of this invention to provide a modular catalyst support tiles to permit replacement of thinner single catalyst support tiles thereby reducing raplacement c06ts.
It is an object of the invention to enhance 10flexibility of the catalytic converter by enabling the simple addition or reduction of the number of individually supported catalyst support tiles depending upon the volume requirements of the application.
According to the present invention there is 15therefore provided a catalytic conversion device for use with internal combustion engines which comprises:
a) a plurality of ceramic catalyst support tiles, each tile having a steel frame on its ed~es and surrounded on its ~:~aces by steel mesh, the plurality of support tiles being secured within a holding basket;
b) a converter body inlet member having an emission inlet which is positioned at the apex of a quadrilateral-based pyramid section of the inlet member, the inlet member further comprising a catalyst tile-hnlding, basket-~5receiving, rectangular mid-section, having basket fastening means at an end of the inlet member distal from the emission inlet wherein the basket fastening means are used to fasten the holding basket to the convertex body inlet member;
c) a converter body outlet member having an emission 30outlet which is positioned at the apex of a quadrilateral-based pyramid section of the outlet member; and, d) a plurality of high temperature gaskets inserted between the holding basket and the converter body inlet member, and between said holding basket and said converter ... ..
, 1~221 75 4a body outlet member, wherein the catalyst`support tile holding basket is received within the converter body inlet member, and the gaskets are positioned about the converter body inlet aind outle~ members to render the whole catalytic conversion device gas tight.
These and further objects o~ the invention will become apparent to those of ordina~ry skill in the art by reference to the detailed description and figures which follow. -10 Brief Description of the Fiqures Figure 1 is a partially exploded perspective view of the catalytic conv~rter of the instant invention.
Figure 2 is an elevational section of the catalyst support tile and frame taken along line 2-2 in Figure 1.
Figure 3 is an elevational view of a series of catalyst support tiles, taken along the line 3-3 in Figure 2.
Fiyure 4 is a side elevation of the catalytic converter device of the instant invention.
Figure 5 is an end elevational view of the catalytic converter device from the emission outlet side.
Figure 6 is a graph of the catalyst activity versus catalyst tile thickness.
Detailed DescriPtion of the Invention Referring to Figure 1, a catalytic converter device 10 is shown in a partially exploded viewO An emission inlet 12 is flanged to be connected to an emission source not shown. As previously noted, the present catalytic converter device is adaipted to be connected directly to internal combustion ~ngines, stationary turbines and steam boilers. The emission inlet 12 is found at the apex of a quadrilateral-based pyramid which forms an inlet member 13. An emission outlet 14 is found ~5~
on the other side of the device 10, also at the apex of a quadrilateral-based pyramid which forms an outlet member 15.
Catalyst support tile holding basket 16 is received within the rectangular mid-section of inlet member 13O Thus, the catalyst is positioned directly in the flow of the incoming exhaust stream. Typically, the catalyst ~support is provided as a honeycomb structure. The precious metal is deposited on the internal cell walls, and the exhaust gas is permitted to flow through the honeycomb structure. A variety of honeycomb catalyst supports are commercially available. The selection of the correct ceramic structure, and the precious metal catalyst to be deposited thereon, is a function of the application, including the composition of the exhaust stream to be exhaust, as well as to provide for compositional measurements of the various streams.
Qnce the holding basket 16 is inserted into the inlet member 13, bolts 50 are used to secure and to seal the outlet member 15 to the inlet member 13.
Another view of the con~erter, from the emission outlet end, is shown in Figure 5. The catalyst support tiles 30 can be seell inside the converter 10. The emission outlet flange 14 has bolt holes 60 disposed ahout its circumference. The triangular faces of the outlet member 15 have sample probe access ports 20 disposed about the emission outlet 14.
EXAMPLE
In measuring catalyst activity as shown in Figure 6, an internal combustion en~ine was connected to a catalytic converter containing CORDIERITE catalyst support, having a honeycomb structure at 200 cells/sq. in. An emission of known composition was fed to the catalytic converter and measurements were made of the influent and influent temperature~ pressure, carbon monoxide, total hydrocarbon and NOX levels~ Catalytic activity across the catalyst support was measured by placing thermocouples in the support to detect temperature variations.
Referri~g now to the performance data represented in Figure 6, performance efficiency is plotted against catalyst sllpport tile thickness. This graph shows that most of the o ' .~ :
~3~ ~ 7~
catalytic reaction occurs on the surface of the catalyst support tile, thus indicating that three one inch titles are more efficient than one three inch tile.
While the invention has been described with reference to a specific embodiment, there are other embodiments and features which are intended to be within the scope of the claimed invention.
::. : ~ :-,.
. ,:: ~ . ;
CATALY~IC CONVERSION DEVICE
Technical Field ~he present invent.ion relates generally to catalytic conversion devices used in combination with internal co~bustion engines, stationary turbines and steam boilers. The invention relates specifically to a device in which a stack of catalyst support tiles is u~ed to enhance catalyst activity and catalyst handlingO
Backaround of the In~ention The u6e of precious metal catalysts such as plati~um, palladium and rhodium to convert NOX and CO in effluent gases has generated an industry focussed on emission controls, Prior art emission control devices are typically con~igured to be inserted within the exhaust stream from internal combustion engines, turbînes and steam boilers. Ceramic catalyst supports : upon which the precious metals are deposited, are provided in bulk. The bulk catalyst support is used to introduce the active catalyst to the gaseous stre~n which flows through the catalyst support. Due to the varying temperature range experienced under engine operating conditions, there is cyclic expansion and contraction of the ceramic supports. This thermal cycling eventually leads to d gr~dation of the ceramic support, which in turn red~ces catalyst activity, and also leads to loose or broken ceramic pieces falling in-to the engine manifold, with o~vious deleterious effects. $
; : , ., . ~ :
~3~2~ 7~
The present invention provides a modular approach to catalyst support. Rather than providing a single bulk cata-lyst, the instant device utilizes a series of catalyst support tiles which are individually structurally supporked and which can ~e individually replaced. According to tha present invention, the ceramic catalyst support tiles are provided in preassembled steel frames and the tile faces are encased in steel mesh. This modular approach provides for easy main-tenance, increased performance, lower replacement cost, interchangeability and easy adjustments~
Catalytic converters need periodic cleaning to maintaln catalyst activity and to minimize any backpressure on the engine resulting from reduced flow capacities in the converter device. The cleaning process consists o~ removing the ceramic catalyst support and immersing the catalyst support in an acid solution. The present invention, which provides individually contained and structurally sound catalyst support tiles, has signiicant advantages over bulk catalysts. Since the instant catalyst support tiles are protected by a wire mesh and steel frame, no special holding tools are required to remove the catalyst support for cleaningO Further, the containment system of the present invention permits reuse of ceramic catalyst support tiles which may be broken or cracked. Bulk c~talyst supports, on the other hand, must be specially handled, and any broken catalyst support tiles must be replaced.
Individually framing catalyst support tiles also permits the use of a greater range of tile thicknesses.
Observed experience demonstrates that most catalytic reactions occur on the catalyst support tile surface. Therefore, catalyst performance is improved by stacking several thinner catalyst support tiles over the same total thickness as would be used in bulk catalyst support systems. The use of steel frames for edge structural support permits use of generally thinner catalyst tiles, at greatly improved overall catalyst efficiency.
During routin~ maintenance, the present invention also provides for lower replacement cost~ Experience has shown that ..
1322~ 73 the most permanent contamination is accu~nulated on the face of the first catalyst tile facing the inlet stream. After a certain period of use, the catalyst support tile has to be replaced due to clogged pores and reduced catalyst acti~ity.
The ability to use thinner catalyst support tiles permits replacement of the front catalyst support tile only, at reduced expense compared to the replacement of an unsupported thicker tile, as in the prior art devices.
Further, the modular approach of the instant invention permits interchangeability of the catalyst support tiles. The total quantity of catalyst required to effect conversion is proportional to the volume of exhaust flow from the emission source~ Due to the modular approach of the present invention, individually supported tiles can be easily mixed and exchanged from one catalytic conversion unit to another. If it is desired to use the same catalytic converter for a higher flow engine or boiler, capacity can be easily increased by the addition of catalyst support til~s ~ithout sacrificing perfor-mance. Similarly, catalyst support tiles can be removed to provide for reduced capacities.
Summar~ of the Invention It is an object of the present invention to provide a catalytic convertex device containing modular cataly~t support tiles.
It is an object of the present invention to provide a modular catalyst support system and catalytic converter which will protect the engine by preventing loose ceramic pieces from falling into the engine manifold.
It is another ob~ect of the present invention to provide a catalytic converter which protects against un-desirable catalyst loss in the engine exhaust by retaining the catalyst support tiles in a mesh enclosure.
It is a still further object o~ this invention to provide a catalytic converter which is easy to maintain since the catalyst support tiles which are contained within a structural support are easily handled without need for special ~ools.
., .:
,, ~
~' ~
~32~:~7~
Another object of the present invention is to provide increased catalyst parformance by effectively increasing the available surface area of the catalyst presented to the incoming stream.
5It is an object of this invention to provide a modular catalyst support tiles to permit replacement of thinner single catalyst support tiles thereby reducing raplacement c06ts.
It is an object of the invention to enhance 10flexibility of the catalytic converter by enabling the simple addition or reduction of the number of individually supported catalyst support tiles depending upon the volume requirements of the application.
According to the present invention there is 15therefore provided a catalytic conversion device for use with internal combustion engines which comprises:
a) a plurality of ceramic catalyst support tiles, each tile having a steel frame on its ed~es and surrounded on its ~:~aces by steel mesh, the plurality of support tiles being secured within a holding basket;
b) a converter body inlet member having an emission inlet which is positioned at the apex of a quadrilateral-based pyramid section of the inlet member, the inlet member further comprising a catalyst tile-hnlding, basket-~5receiving, rectangular mid-section, having basket fastening means at an end of the inlet member distal from the emission inlet wherein the basket fastening means are used to fasten the holding basket to the convertex body inlet member;
c) a converter body outlet member having an emission 30outlet which is positioned at the apex of a quadrilateral-based pyramid section of the outlet member; and, d) a plurality of high temperature gaskets inserted between the holding basket and the converter body inlet member, and between said holding basket and said converter ... ..
, 1~221 75 4a body outlet member, wherein the catalyst`support tile holding basket is received within the converter body inlet member, and the gaskets are positioned about the converter body inlet aind outle~ members to render the whole catalytic conversion device gas tight.
These and further objects o~ the invention will become apparent to those of ordina~ry skill in the art by reference to the detailed description and figures which follow. -10 Brief Description of the Fiqures Figure 1 is a partially exploded perspective view of the catalytic conv~rter of the instant invention.
Figure 2 is an elevational section of the catalyst support tile and frame taken along line 2-2 in Figure 1.
Figure 3 is an elevational view of a series of catalyst support tiles, taken along the line 3-3 in Figure 2.
Fiyure 4 is a side elevation of the catalytic converter device of the instant invention.
Figure 5 is an end elevational view of the catalytic converter device from the emission outlet side.
Figure 6 is a graph of the catalyst activity versus catalyst tile thickness.
Detailed DescriPtion of the Invention Referring to Figure 1, a catalytic converter device 10 is shown in a partially exploded viewO An emission inlet 12 is flanged to be connected to an emission source not shown. As previously noted, the present catalytic converter device is adaipted to be connected directly to internal combustion ~ngines, stationary turbines and steam boilers. The emission inlet 12 is found at the apex of a quadrilateral-based pyramid which forms an inlet member 13. An emission outlet 14 is found ~5~
on the other side of the device 10, also at the apex of a quadrilateral-based pyramid which forms an outlet member 15.
Catalyst support tile holding basket 16 is received within the rectangular mid-section of inlet member 13O Thus, the catalyst is positioned directly in the flow of the incoming exhaust stream. Typically, the catalyst ~support is provided as a honeycomb structure. The precious metal is deposited on the internal cell walls, and the exhaust gas is permitted to flow through the honeycomb structure. A variety of honeycomb catalyst supports are commercially available. The selection of the correct ceramic structure, and the precious metal catalyst to be deposited thereon, is a function of the application, including the composition of the exhaust stream to be exhaust, as well as to provide for compositional measurements of the various streams.
Qnce the holding basket 16 is inserted into the inlet member 13, bolts 50 are used to secure and to seal the outlet member 15 to the inlet member 13.
Another view of the con~erter, from the emission outlet end, is shown in Figure 5. The catalyst support tiles 30 can be seell inside the converter 10. The emission outlet flange 14 has bolt holes 60 disposed ahout its circumference. The triangular faces of the outlet member 15 have sample probe access ports 20 disposed about the emission outlet 14.
EXAMPLE
In measuring catalyst activity as shown in Figure 6, an internal combustion en~ine was connected to a catalytic converter containing CORDIERITE catalyst support, having a honeycomb structure at 200 cells/sq. in. An emission of known composition was fed to the catalytic converter and measurements were made of the influent and influent temperature~ pressure, carbon monoxide, total hydrocarbon and NOX levels~ Catalytic activity across the catalyst support was measured by placing thermocouples in the support to detect temperature variations.
Referri~g now to the performance data represented in Figure 6, performance efficiency is plotted against catalyst sllpport tile thickness. This graph shows that most of the o ' .~ :
~3~ ~ 7~
catalytic reaction occurs on the surface of the catalyst support tile, thus indicating that three one inch titles are more efficient than one three inch tile.
While the invention has been described with reference to a specific embodiment, there are other embodiments and features which are intended to be within the scope of the claimed invention.
::. : ~ :-,.
. ,:: ~ . ;
Claims (2)
1. A catalytic conversion device for use with internal combustion engines which comprises:
a) a plurality of ceramic catalyst support tiles, each tile having a steel frame on its edges and surrounded on its faces by steel mesh, said plurality of support tiles being secured within a holding basket;
b) a converter body inlet member having an emmission inlet which is positioned at the apex of a quadrilateral-based pyramid section of said inlet member, said inlet member further comprising a catalyst tile-holding, basket-receiving, rectangular mid-section, having basket fastening means at an end of said inlet member distal from said emission inlet wherein said basket fastening means are used to fasten said holding basket to-said converter body inlet member;
c) a converter body outlet member having an emission outlet which is positioned at the apex of a guadrilateral-based pyramid section of said outlet member; and, d) a plurality of high temperature gaskets inserted between said holding basket and said converter body inlet member, and between said holding basket and said converter body outlet member, wherein said catalyst support tile holding basket is received within said converter body inlet member, and said gaskets are positioned about said converter body inlet and outlet members to render the whole catalytic conversion device gas tight.
a) a plurality of ceramic catalyst support tiles, each tile having a steel frame on its edges and surrounded on its faces by steel mesh, said plurality of support tiles being secured within a holding basket;
b) a converter body inlet member having an emmission inlet which is positioned at the apex of a quadrilateral-based pyramid section of said inlet member, said inlet member further comprising a catalyst tile-holding, basket-receiving, rectangular mid-section, having basket fastening means at an end of said inlet member distal from said emission inlet wherein said basket fastening means are used to fasten said holding basket to-said converter body inlet member;
c) a converter body outlet member having an emission outlet which is positioned at the apex of a guadrilateral-based pyramid section of said outlet member; and, d) a plurality of high temperature gaskets inserted between said holding basket and said converter body inlet member, and between said holding basket and said converter body outlet member, wherein said catalyst support tile holding basket is received within said converter body inlet member, and said gaskets are positioned about said converter body inlet and outlet members to render the whole catalytic conversion device gas tight.
2. The catalytic converter device as in claim wherein at least one sample probe access port is provided through said inlet member or said outlet member.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US07/234,418 US4843815A (en) | 1988-08-19 | 1988-08-19 | Catalytic conversion device |
| US234,418 | 1988-08-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1322175C true CA1322175C (en) | 1993-09-14 |
Family
ID=22881308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000608798A Expired - Fee Related CA1322175C (en) | 1988-08-19 | 1989-08-18 | Catalytic conversion device |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4843815A (en) |
| EP (1) | EP0383907A4 (en) |
| JP (1) | JPH03500915A (en) |
| CA (1) | CA1322175C (en) |
| DK (1) | DK97490A (en) |
| WO (1) | WO1990002252A1 (en) |
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4843815A (en) * | 1988-08-19 | 1989-07-04 | Smojver Radmil R | Catalytic conversion device |
| US5169604A (en) * | 1991-10-30 | 1992-12-08 | Johnson Matthey, Inc. | Catalytic converter with replaceable carrier assembly |
| AU661733B2 (en) * | 1992-01-21 | 1995-08-03 | Outboard Marine Corporation | Catalytic element for marine propulsion device |
| US5372530A (en) * | 1992-01-21 | 1994-12-13 | Outboard Marine Corp | Outboard motor with separated exhaust gas pulsing and exhaust gas discharge |
| US5484574A (en) * | 1992-03-19 | 1996-01-16 | Catalytic Industrial Group, Inc. | Apparatus and method for removal of volatile organic compounds for gas streams |
| JP3089575B2 (en) * | 1992-11-13 | 2000-09-18 | 三信工業株式会社 | Outboard exhaust system |
| US5326942A (en) * | 1993-02-09 | 1994-07-05 | Schmid Jerry W | Noise suppression muffler for moisture laden exhaust gases & method |
| US5409670A (en) * | 1993-08-13 | 1995-04-25 | Peerless Manufacturing Company | SCR reactor sealing mechanism |
| US5425924A (en) * | 1993-09-07 | 1995-06-20 | Finley; Charles M. | Compact fixed-bed reactor with folded reaction path |
| JPH0780323A (en) * | 1993-09-09 | 1995-03-28 | Usui Internatl Ind Co Ltd | Unit type metallic carrier |
| US5408828A (en) * | 1993-12-10 | 1995-04-25 | General Motors Corporation | Integral cast diffuser for a catalytic converter |
| FI98403C (en) * | 1994-07-01 | 1997-06-10 | Waertsilae Diesel Int | Method of operating the silencer unit and system for applying the method to a large diesel engine |
| US5746986A (en) * | 1994-12-30 | 1998-05-05 | Waukesha-Pearce Industries, Inc. | Industrial catalytic converter and combination industrial catalytic converter and silencer |
| US5547641A (en) * | 1995-01-10 | 1996-08-20 | Caterpillar Inc. | Catalytic converter exhaust section for an internal combustion engine |
| US7157060B1 (en) | 2002-10-24 | 2007-01-02 | Miratech Corporation | Catalytic converter and catalyst element therefor |
| JP2006265293A (en) * | 2005-03-22 | 2006-10-05 | Hachiro Maruchi | Fuel reformer |
| US8062602B2 (en) * | 2008-11-25 | 2011-11-22 | Universal Acoustic & Emission Technologies, Inc. | Catalyst housing |
| FR3005875A1 (en) * | 2013-05-22 | 2014-11-28 | Cintrax | DEVICE FOR DETERMINING GAS |
| US9482135B2 (en) * | 2014-08-11 | 2016-11-01 | Cummins Emission Solutions, Inc. | Dual fuel diesel oxidation catalyst with removable catalysts |
| JP6615076B2 (en) * | 2016-09-16 | 2019-12-04 | ヤンマー株式会社 | Ship |
| CN111878201A (en) * | 2020-08-28 | 2020-11-03 | 河南柴油机重工有限责任公司 | Fixing device, SCR reaction device, use method and application |
| CN117283076A (en) * | 2022-06-16 | 2023-12-26 | 伊利诺斯工具制品有限公司 | Gas cleaning device for reflow oven and reflow oven using the same |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR402173A (en) * | 1909-04-20 | 1909-09-30 | Michel Frenkel | Method and apparatus for deodorizing exhaust gases from automobile engines and the like |
| GB312200A (en) * | 1927-12-19 | 1929-05-21 | Lewis Sidney Fraser | Improved method of and means for treating noxious and other fumes |
| US3695851A (en) * | 1970-10-26 | 1972-10-03 | Universal Oil Prod Co | Exhaust gas catalytic converter |
| JPS5148530B2 (en) * | 1972-08-22 | 1976-12-21 | ||
| US3841842A (en) * | 1972-12-11 | 1974-10-15 | Corning Glass Works | Catalytic converter |
| GB1453439A (en) * | 1973-01-13 | 1976-10-20 | Ti Silencer Services Ltd | Catalytic reactor for exhaust emission control |
| US3902853A (en) * | 1973-04-06 | 1975-09-02 | Ethyl Corp | Exhaust reactor |
| DE3027499A1 (en) * | 1980-07-19 | 1982-02-18 | Knecht Filterwerke Gmbh, 7000 Stuttgart | EXHAUST GAS FILTER FOR COMBUSTION ENGINES |
| JPS6131131Y2 (en) * | 1981-03-26 | 1986-09-10 | ||
| JPS60150818A (en) * | 1984-01-17 | 1985-08-08 | Mitsubishi Heavy Ind Ltd | Accumulation apparatus of catalyst pack |
| DE3512580A1 (en) * | 1985-04-06 | 1986-10-16 | Üründül, Celâl, 6800 Mannheim | Fixing of a catalytic converter body in a cartridge sleeve for elastic mounting of the catalytic converter body in a housing |
| US4849185A (en) * | 1986-10-24 | 1989-07-18 | Johnson-Matthey, Inc. | Catalytic converter with multiple removable catalyst panels |
| US4843815A (en) * | 1988-08-19 | 1989-07-04 | Smojver Radmil R | Catalytic conversion device |
-
1988
- 1988-08-19 US US07/234,418 patent/US4843815A/en not_active Expired - Fee Related
-
1989
- 1989-08-11 WO PCT/US1989/003460 patent/WO1990002252A1/en not_active Application Discontinuation
- 1989-08-11 EP EP19890910322 patent/EP0383907A4/en not_active Withdrawn
- 1989-08-11 JP JP1509543A patent/JPH03500915A/en active Pending
- 1989-08-18 CA CA000608798A patent/CA1322175C/en not_active Expired - Fee Related
-
1990
- 1990-04-19 DK DK097490A patent/DK97490A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03500915A (en) | 1991-02-28 |
| DK97490D0 (en) | 1990-04-19 |
| WO1990002252A1 (en) | 1990-03-08 |
| EP0383907A4 (en) | 1990-12-27 |
| DK97490A (en) | 1990-04-19 |
| US4843815A (en) | 1989-07-04 |
| EP0383907A1 (en) | 1990-08-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |