US3649214A - Apparatus for catalytic conversion of exhaust gas - Google Patents

Apparatus for catalytic conversion of exhaust gas Download PDF

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Publication number
US3649214A
US3649214A US821014A US3649214DA US3649214A US 3649214 A US3649214 A US 3649214A US 821014 A US821014 A US 821014A US 3649214D A US3649214D A US 3649214DA US 3649214 A US3649214 A US 3649214A
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US
United States
Prior art keywords
casing
inlet
openings
exhaust gas
flanges
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 - Lifetime
Application number
US821014A
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English (en)
Inventor
Sune Torsten Henriksson
Ragnar Ludvig Muotka
Lars E Landeborg
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Individual
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Publication date
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Publication of US3649214A publication Critical patent/US3649214A/en
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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
    • F01N3/2839—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration
    • F01N3/2846—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration specially adapted for granular supports, e.g. pellets
    • 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
    • F01N2330/08—Granular material
    • 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
    • F01N2390/00—Arrangements for controlling or regulating 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
    • F01N2550/00—Monitoring or diagnosing the deterioration of exhaust systems
    • 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
    • F01N3/38—Arrangements for igniting

Definitions

  • a casing having a gas inlet opening and a gas outlet opening formed in the walls thereof and at least one container for catalytic material having perforated walls and disposed in the cas ing between the inlet and outlet openings, each of said openings is connected to an exhaust gas system by means of a pair of opposing flanges which are disposed each on one side of the edge portion of said wall defining the opening in question, a sealing material is provided between the flanges and also extends outwardly between one of the flanges and the edge portion, and tightening means is provided for pressing the flanges against the intermediate sealing material.
  • the present invention relates to an apparatus for catalytic conversion of exhaust gas from internal combustion engines.
  • the exhaust gas is led through one or more beds or containers holding a catalytic material which will at least partly convert the harmful components, especially the unburned hydrocarbons, of the exhaust gas to compounds of less toxic nature.
  • a known apparatus for catalytic exhaust gas conversion consists of a casing in the walls of which inlet and outlet openings are provided, and of at least one container holding a catalytic material and disposed in the casing between the inlet and outlet openings thereof, the apparatus being provided with means for connecting the ducts of an exhaust gas system to the inlet and outlet openings in a rotatable but lockable manner, each of the connecting means comprising a pair of flanges, one of which is securable to a duct portion of the exhaust gas system.
  • the object of the present invention is therefore to provide an apparatus for catalytic conversion of exhaust gas, which is tight and compact and which offers great possibilities of adjusting the mounting of the apparatus to the space available.
  • flanges are disposed at their edge portions each on one side of a portion of the casing walls defining the inlet and outlet openings, respectively, and are adapted to be pressed against a sealing ring located partly between the flanges and partly between one of the flanges and said edge portion.
  • the casing consists of a cylindrical wall and of end walls which are provided with filling and discharge pipes for the container or containers, the axes of the pipes forming an angle of between 10 and 80 to the axis of the cylindrical wall.
  • FIG. I shows an axial section through an embodiment of an exhaust gas conversion apparatus according to the invention.
  • FIG. 2 shows an end view of the exhaust gas conversion apparatus.
  • the exhaust gas conversion apparatus has an outer casing which consists of a cylindrical wall 1 and end walls 2 and 3.
  • the end walls 2 and 3 are provided with an inlet opening and an outlet opening, respectively.
  • Inside the casing there are provided two annular catalyst containers.
  • the containers are formed by four cylindrical walls 5, 6, 7 and 8, which are concentric in relation to the cylindrical wall and are provided with openings 4, as well as by end walls disposed at the margins thereof.
  • an inner catalyst container is formed by the two inner walls 5 and 6, by a central circular end wall 9, which is united with the margins of the walls 5 and 6 adjacent the inlet opening and which closes the end of the cylindrical space formed inside the inner wall 5 and located adjacent the inlet opening, and by an annular end wall which is united with the margins of the walls 5 and 6 located adjacent the outlet opening and projecting slightly past the wall 6.
  • An outer catalyst container is formed by the two outer cylindrical walls 7 and 8, by an annular end wall 11 which is united with the margins of the walls 7 and 8 located adjacent the inlet opening and extending to and being united with the cylindrical wall I, and by a likewise annular end wall 12 which is united with the margins of the walls 7 and 8 located adjacent the outlet opening and extending inwardly slightly past the wall 7 in order to become united with the end wall 10 and close the annular slot located between the containers.
  • the exhaust gas to be converted flows into the annular slot between the containers which is defined by the walls 6 and 7 and the end walls 10 and 12 united by the annular slot and located adjacent the outlet opening.
  • the exhaust gas then flows through the openings 4 in the walls 6 and 7 into the catalyst containers in order to be converted and purified thereby means of the catalytic material.
  • the converted exhaust gas is discharged through the openings 4 in the walls 5 and 8 of the respective containers to the cylindrical space enclosed respectively by the wall 5 and the annular slot between the wall 8 and the cylindrical wall 1, whence the exhaust gas is discharged to the outlet opening in the end wall 3 of the casing.
  • Pipe sockets l3 and 14 extend through the end wall 3 of the casing inwardly to the respective end walls 10 and 12 of the catalyst containers in order to permit filling and discharging of the catalytic material.
  • the angles between the axis of the pipe sockets and the axis of the cylindrical wall 1 are about 45 and about 20, respectively, for which reason the exhaust gas converting apparatus may be mounted without inconvenience either horizontally or vertically as well as in intermediate angular positions.
  • the pipe sockets 13 and 14 are closed by means of screwplugs l5 and 16, respectively.
  • the end wall 2 of the casing is provided with a connecting nipple 17 for pressure indicating means and a connecting opening 18 for temperature indicating means.
  • Fixing brackets 19 are disposed at the ends of the cylindrical wall 1 and are provided with apertures 20 for screws and bolts.
  • the fixing brackets are welded to strips 21 extending around the periphery of the cylindrical wall and provided at the ends with tensioning means 22 by means of which the strips may be tensioned for securing the fixing brackets 19.
  • the position of the fixing brackets 19 on the periphery of the cylindrical wall 1 may consequently be determined according to wish.
  • the end walls 2 and 3 of the casing are provided with connecting means for the ducts of the exhaust gas system.
  • the connecting means both have the same construction and therefore only the connecting means at the inlet opening will be described in greater detail.
  • the main components of the connecting means consist of two annular flanges 23 and 24 having a slightly larger outer diameter than the diameter of the inlet opening, and are disposed each on one side of the edge portion of the end wall 2 of the casing which defines the opening.
  • the outer flange 23 is adapted to carry a duct section (not shown) of the exhaust gas system, and this section preferably consists of a tube bend welded onto the flange 23.
  • An annular gasket 25 is provided between the flanges 23 and 24 and also extends outwardly between the outer flange 23 and the edge portion of the end wall 2, so that both the surfaces of the flanges which are located opposite each other and the surfaces of the outer flange 23 which are located opposite each other as well as the edge portion defining the opening will be sealed.
  • the flanges 23 and 24 are held together by means of bolts 26 which, when not tensioned, permit the whole connecting means to be rotated as a unit so that a duct section of the exhaust system secured to the outer flange 23 may be adjusted in the most suitable manner.
  • Apparatus for catalytic conversion of exhaust gas comprising a cylindrical casing having an end plate secured over each end thereof, said end plate including opposed centrally located inlet and outlet openings therein through which exhaust gas may be passed into the cylindrical casing at one end thereof and out of the cylindrical casing at the other end thereof, a container for catalytic material secured within the casing including concentric cylindrical sleeves having openings through the sides thereof, a pipe extending through at least one end plate in communication with the container for loading and unloading the container flange means secured over the inlet and outlet openings in the casing end plates for securing exhaust ducts thereto with the casing in any angular position with regard to the axis of generation thereof and at least on strap extending around the casing including tensioning means for securing the casing thereto in any selected angular position thereof and bracket means secured to the strap for mounting the casing.
  • the container is two radially spaced apart annular cylindrical members including four concentric cylindrical sleeves having openings in the sides thereof, an end plate connected over the adjacent ends of the two smaller diameter concentric sleeves adjacent the exhaust gas inlet openings and an annular end plate secured between adjacent ends of the two radially outer concentric sleeves at the end thereof adjacent the inlet opening, and annular plate means extending between the adjacent ends of the inner and outer cylindrical sleeves at the end thereof adjacent the exhaust duct outlet opening.
  • the means for securing the exhaust inlet duct and the exhaust outlet duct to the casing at each of the inlet and outlet openings comprises a pair of flanges having a diameter larger than the inlet and outlet openings, an annular sealing member positioned between the pair of flanges also having an outer diameter larger than the diameter of the inlet and outlet openings, and means for compressing the periphery of the inlet and outlet openings and the sealing member between the pair of flanges at the inlet and outlet openingsv 4.
  • An apparatus for catalytic conversion of exhaust gas comprising a cylindrical casing including an end plate at each end thereof through which gas inlet and outlet openings are formed, at least one container for catalytic material disposed in the casing between said inlet and outlet openings which is also cylindrical and is formed by at least one pair of concentric cylindrical members, axially aligned with the casing and having openings therethrough exposing catalytic material therein to exhaust gas passed through the casing, in conjunction with plates secured over the ends thereof, means for mounting the casing in any rotated position thereof about an axis therethrough and means for connecting the casing at the gas inlet and outlet openings to exhaust gas inlet and outlet ducts in any rotated position thereof about the axis.
  • the means for mounting the casing in any rotated position thereof comprises at least one belt extending circumferentially about the casing, a bracket secured to the belt at one position thereon and tensioning means secured to the ends of the belt for tightening the belt around the casing whereby on loosening the belt the casing may be rotated within the belt and on tightening the belt the casing is secured in an adjusted position within the belt.
  • the means for connecting the casing to exhaust gas inlet and outlet ducts in any rotated position thereof comprises a pair of annular flanges positioned on opposite sides of each of the exhaust gas inlet and outlet openings and having a diameter larger than the diameter of the openings, annular sealing means positioned between the flange pairs also having a diameter larger than the openings, means for compressing the periphery of the openings and the sealing means between the corresponding pair of flanges whereby on releasing the periphery of the opening in the casing the flanges and seal may be rotated into substantially any angular position with respect to the openings.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Gas After Treatment (AREA)
US821014A 1969-05-05 1969-05-01 Apparatus for catalytic conversion of exhaust gas Expired - Lifetime US3649214A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6914217A FR2043969A5 (de) 1969-05-05 1969-05-05

Publications (1)

Publication Number Publication Date
US3649214A true US3649214A (en) 1972-03-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
US821014A Expired - Lifetime US3649214A (en) 1969-05-05 1969-05-01 Apparatus for catalytic conversion of exhaust gas

Country Status (5)

Country Link
US (1) US3649214A (de)
CH (1) CH492870A (de)
DE (1) DE1921042A1 (de)
FR (1) FR2043969A5 (de)
GB (1) GB1218483A (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4124357A (en) * 1977-04-28 1978-11-07 Toyota Jidosha Kogyo Kabushiki Kaisha Catalytic converter of a radial flow type
US4283368A (en) * 1978-06-27 1981-08-11 Toyo Kogyo Co., Ltd. Radial flow catalytic converter
US4351249A (en) * 1978-04-26 1982-09-28 Allan Inovius Reactor
US4576799A (en) * 1982-07-29 1986-03-18 J. Eberspacher Filtering and post-combustion device for waste gases
EP0539834A1 (de) * 1991-10-23 1993-05-05 OTTO OEKO-TECH GMBH & CO. KG Verfahren und Vorrichtung zur Strömungsführung in Radialstromreaktoren
CN103084122A (zh) * 2011-10-31 2013-05-08 中国石油化工集团公司 径向反应器

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3315089A1 (de) * 1983-04-26 1984-10-31 Aktiebolaget Electrolux, Stockholm Kuehlbehaelter mit einem waermebetriebenen absorptionskaelteapparat
DE10104976B4 (de) * 2001-02-03 2012-03-01 Adam Opel Ag Abgaskühler

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1689575A (en) * 1926-12-20 1928-10-30 Sperry H Winn Boiler fitting
US1995840A (en) * 1933-04-24 1935-03-26 John J Compo Muffler pipe connecter
US2025271A (en) * 1935-03-06 1935-12-24 John J Compo Muffler pipe connecter
US2160808A (en) * 1938-02-15 1939-06-06 Harris Products Company Exhaust pipe and muffler support
US2688497A (en) * 1951-12-17 1954-09-07 Northrop Aircraft Inc Sealing nut assembly
US2744706A (en) * 1952-02-28 1956-05-08 Emanuel J Gerdy Muffler and tailpipe hanger
US3434806A (en) * 1964-03-11 1969-03-25 Peter Spence & Sons Ltd Catalytic muffler

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1689575A (en) * 1926-12-20 1928-10-30 Sperry H Winn Boiler fitting
US1995840A (en) * 1933-04-24 1935-03-26 John J Compo Muffler pipe connecter
US2025271A (en) * 1935-03-06 1935-12-24 John J Compo Muffler pipe connecter
US2160808A (en) * 1938-02-15 1939-06-06 Harris Products Company Exhaust pipe and muffler support
US2688497A (en) * 1951-12-17 1954-09-07 Northrop Aircraft Inc Sealing nut assembly
US2744706A (en) * 1952-02-28 1956-05-08 Emanuel J Gerdy Muffler and tailpipe hanger
US3434806A (en) * 1964-03-11 1969-03-25 Peter Spence & Sons Ltd Catalytic muffler

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4124357A (en) * 1977-04-28 1978-11-07 Toyota Jidosha Kogyo Kabushiki Kaisha Catalytic converter of a radial flow type
US4351249A (en) * 1978-04-26 1982-09-28 Allan Inovius Reactor
US4283368A (en) * 1978-06-27 1981-08-11 Toyo Kogyo Co., Ltd. Radial flow catalytic converter
US4576799A (en) * 1982-07-29 1986-03-18 J. Eberspacher Filtering and post-combustion device for waste gases
EP0539834A1 (de) * 1991-10-23 1993-05-05 OTTO OEKO-TECH GMBH & CO. KG Verfahren und Vorrichtung zur Strömungsführung in Radialstromreaktoren
CN103084122A (zh) * 2011-10-31 2013-05-08 中国石油化工集团公司 径向反应器

Also Published As

Publication number Publication date
CH492870A (de) 1970-06-30
FR2043969A5 (de) 1971-02-19
DE1921042A1 (de) 1970-10-29
GB1218483A (en) 1971-01-06

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