Including Means Injecting Combustion Fuel Into Reaction Chamber In Direct Contact With Waste Gas Patents (Class 422/182)
  • Patent number: 7964148
    Abstract: A method and system of providing compressed substantially oxygen-free exhaust gas for industrial purposes including the steps of extracting exhaust gas from a lean burn engine consuming a mixture of natural gas fuel and air, passing the extracted exhaust gas through a cooling step to cause entrained water vapor therein to condense out, separating and disposing of the condensed water, measuring the oxygen content of the exhaust gas, using the measurement to regulate the quantity of natural gas fed into an igniter into which the exhaust gas is also fed so that substantially all of the oxygen in the exhaust gas is consumed by combustion with the natural gas in the igniter to provide at an outlet of the igniter substantially oxygen-free exhaust gas, and compressing the substantially oxygen-free exhaust gas to provide compressed exhaust gas for industrial applications.
    Type: Grant
    Filed: October 24, 2008
    Date of Patent: June 21, 2011
    Assignee: NCO2 Company LLC
    Inventor: Wade J. Alexander
  • Patent number: 7951338
    Abstract: A catalytic converter having an excellent purification efficiency and small pressure loss and a method for producing the same is provided. A catalytic converter comprises a catalyst coating layer which is coated on the surface of the partition walls of the honeycomb structural body having partition walls which divide and form a plurality of cells functioning as fluid passages.
    Type: Grant
    Filed: March 19, 2007
    Date of Patent: May 31, 2011
    Assignee: NGK Insulators, Ltd.
    Inventors: Yukio Miyairi, Naomi Noda
  • Patent number: 7947102
    Abstract: An improved ceramic honeycomb filter has at least one porous partition wall defining a channel that is (1) microstructurally different along the length of the channel, (2) microstructurally different than at least a portion of a partition wall defining another channel or (3) combination thereof. The improved filter may be used for filtering Diesel exhaust and may have reduced back pressure and equivalent soot capture efficiency compared to a filter without having said microstructural differences.
    Type: Grant
    Filed: December 12, 2007
    Date of Patent: May 24, 2011
    Assignee: Dow Global Technologies LLC
    Inventor: Robin Ziebarth
  • Patent number: 7935167
    Abstract: A method for manufacturing a composite ceramic body with occluding a plurality of pores that are open at its surface of a porous ceramic body, the method includes the steps of impregnating a polysilazane solution including polysilazane having a repetition structure of fundamental units of at least one of [—Si(H)(CnH2n+1)—NH—] and [—Si(CnH2n+1)2—NH—], and a predetermined organic solvent, into the plurality of pores of the porous ceramic body, and heating the porous ceramic body to convert the polysilazane in the plurality of pores into ceramic material.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: May 3, 2011
    Assignee: Noritake Co., Ltd.
    Inventors: Keita Miyajima, Yasunori Ando
  • Patent number: 7931715
    Abstract: An exhaust filter system includes a particulate filter (PF) that is disposed downstream from an engine. The PF filters particulates within an exhaust from the engine. A heating element heats particulate matter in the PF. A fastener limits expansion movement of the heating element relative to the PF.
    Type: Grant
    Filed: February 12, 2007
    Date of Patent: April 26, 2011
    Inventors: Eugene V. Gonze, Frank Ament, Michael J. Paratore, Jr.
  • Patent number: 7918914
    Abstract: In an exhaust gas treatment component with a ceramic body for the purification of exhaust gases and a method for making such a component, the ceramic body is disposed in a sheet metal housing consisting of a housing base from which housing sections extend which are hinged to the housing base by webs and which form together a tubular slotted housing part surrounding the ceramic body, the housing sections being tiltable outwardly about the webs for facilitating insertion of the ceramic body into the housing.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: April 5, 2011
    Assignee: MTU Friedrichshafen, GmbH
    Inventors: Hans Sudmanns, Claudia Weigel, Guido Schaffner, Dirk Bergmann
  • Patent number: 7909904
    Abstract: A method for producing a ceramic honeycomb structure comprises providing a honeycomb body having a side surface, a first cut end surface, a second cut end surface opposite the first end surface, and a maximum width (W), and removing material from at least one of the cut end surfaces of the honeycomb body to reduce the length (L), wherein the step of removing material comprises abrasively removing material from at least one of the ends with a rotating abrasive tool, such as by grinding, and wherein L/W is greater than 0.75. The method may achieve end flatness, parallelism, surface roughness and length accuracy, or combinations thereof which heretofore, were unachievable. Face finished ceramic honeycomb structures having low surface roughness (Ra), high degree of parallelism and accurate lengths are also disclosed.
    Type: Grant
    Filed: March 19, 2007
    Date of Patent: March 22, 2011
    Assignee: Corning Incorporated
    Inventor: Bruce Patrick Allen
  • Patent number: 7905933
    Abstract: An exhaust gas cleaning apparatus and a filter regeneration apparatus that are capable of cleaning a large volume of exhaust gas without any increase in size of a nonmagnetic member around which a working coil for induction heating is wound. The exhaust gas cleaning apparatus includes a particulate collecting section and a filter regenerating section placed next to each other in the flow direction of an exhaust gas, and a movable frame. The movable frame holds an extension of a filter unit extending from a casing of the particulate collecting section beyond the support frame of the filter regenerating section, and can move the filter unit in the axial direction of the casing. When the filter unit moved by the movable frame passes through the filter regenerating section, a corresponding part of a holding frame disposed in the filter unit is continuously induction-heated to burn collected particulates, such that the filter unit can be regenerated.
    Type: Grant
    Filed: March 2, 2007
    Date of Patent: March 15, 2011
    Assignee: National University Corporation, Tokyo University of Marine Science and Technology
    Inventor: Yoshihiro Hatanaka
  • Patent number: 7901480
    Abstract: A method is provided for producing a highly porous substrate. More particularly, the present invention enables fibers, such as organic, inorganic, glass, ceramic, polymer, or metal fibers, to be combined with binders and additives, and extruded, to form a porous substrate. Depending on the selection of the constituents used to form an extrudable mixture, the present invention enables substrate porosities of about 60% to about 90%, and enables process advantages at other porosities, as well. The extrudable mixture may use a wide variety of fibers and additives, and is adaptable to a wide variety of operating environments and applications. Additives can be selected that form inorganic bonds between overlapping fibers in the extruded substrate that provide enhanced strength and performance of the porous substrate in a variety of applications, such as, for example, filtration and as a host for catalytic processes, such as catalytic converters.
    Type: Grant
    Filed: February 2, 2009
    Date of Patent: March 8, 2011
    Assignee: GEO2 Technologies, Inc.
    Inventors: Bilal Zuberi, Robert G. Lachenauer, Sunilkumar C. Pillai, William M Carty
  • Patent number: 7901475
    Abstract: A diesel particulate filter assembly comprises a diesel particulate filter (DPF) and a heater assembly. The DPF filters a particulate from exhaust produced by an engine. The heater assembly has a first metallic layer that is applied to the DPF, a resistive layer that is applied to the first metallic layer, and a second metallic layer that is applied to the resistive layer. The second metallic layer is etched to form a plurality of zones.
    Type: Grant
    Filed: March 20, 2008
    Date of Patent: March 8, 2011
    Inventors: Eugene V. Gonze, Michael J. Paratore, Jr.
  • Patent number: 7892309
    Abstract: A method for producing a honeycomb filter from a honeycomb structure having large numbers of flow paths partitioned by cell walls, comprising inserting a tubular member into each of the flow paths, and injecting a plugging material into each of the flow paths from the tubular member to form a plug in each of the flow paths at a position separate from the end surface of the honeycomb structure, the tubular member having an outer diameter that is 40-90% of the opening size of the flow path, the plugging material comprising at least a ceramic material having a maximum particle size that is 85% or less of the inner diameter of the tubular member, and an average particle size of 1 ?m or more.
    Type: Grant
    Filed: December 22, 2005
    Date of Patent: February 22, 2011
    Assignee: Hitachi Metals, Ltd.
    Inventors: Shunji Okazaki, Yasuhiko Otsubo, Shinya Tokumaru, Hirohisa Suwabe, Toshitaka Ishizawa
  • Patent number: 7892506
    Abstract: Apparatus for the combustive destruction of noxious substances comprises an annular combustion zone (C14) surrounded by the exit surface of an inwardly fired foraminous burner (C32) and surrounding the exit surface of an outwardly fired foraminous burner (C42), means (C12) for injecting a gas stream containing at least one noxious substance into the combustion zone, and means for supplying fuel gas and oxidant to the foraminous burners to effect combustion at the exit surfaces.
    Type: Grant
    Filed: March 18, 2008
    Date of Patent: February 22, 2011
    Assignee: Edwards Limited
    Inventor: Andrew James Seeley
  • Patent number: 7892308
    Abstract: A filling percentage of a central portion is larger than that of a peripheral portion at the inlet end surface of an exhaust gas of a honeycomb segment (2) constituting a ceramic filter due to additional filling (13). Thus, an amount of soot accumulated in vents (5) in the central portion of each honeycomb segment (2) is less relative to that in the peripheral portion. This decreases a quantity of heat generated by burning of soot in the central portion, and reduces temperature rise during recycling, thus limiting the maximum temperature of the ceramic filter (1).
    Type: Grant
    Filed: August 11, 2004
    Date of Patent: February 22, 2011
    Assignee: NGK Insulators, Ltd.
    Inventor: Takashi Mizutani
  • Patent number: 7879126
    Abstract: An improved particulate filtration system has an inlet, for the fluid to be filtered, connected to a housing containing a filter medium such that the fluid passes through the filter medium, and an outlet for the filtered fluid to exit. The filtration system's improvement is the filter medium being comprised of a porous ceramic of fused platelet grains. In a particular embodiment, the porous ceramic is a celsian porous ceramic, where the celsian grains have a hexagonal morphology and display a continuous volume thermal expansion coefficient from 100° C. to 1000° C.
    Type: Grant
    Filed: July 20, 2007
    Date of Patent: February 1, 2011
    Assignee: Dow Global Technologies Inc.
    Inventors: Aleksander J. Pyzik, Robert A. Newman, Nicholas M. Shinkel
  • Patent number: 7866143
    Abstract: An exhaust gas treatment system for an exhaust system of an internal combustion engine includes a basic housing and an add-on housing mounted thereon so it is at least partially detachable. The basic housing contains at least one inlet pipe which can be connected to the exhaust system and leads into the basic housing, at least one outlet pipe which can be connected to the exhaust system and leads out of the basic housing, at least one SCR catalyst and at least one oxidizing catalytic converter. The add-on housing contains at least one particle separation device and at least one reducing agent feed mechanism.
    Type: Grant
    Filed: January 13, 2006
    Date of Patent: January 11, 2011
    Assignee: J. Eberspaecher GmbH & Co. KG
    Inventors: Rudolf Buhmann, Rainer Lehnen, Arthur Wieland
  • Patent number: 7867313
    Abstract: The invention concerns a process for the production of a porous ?-SiC-bearing ceramic molded body that includes an aluminum oxide layer at the surface of the pores and passages of the porous ?-SiC-bearing ceramic molded body. The invention further concerns a porous ?-SiC-bearing ceramic molded body which has pores of a mean pore size in the range of between 0.1 urn and 50 ?m and an aluminum oxide layer at the surface of the open pores and passages.
    Type: Grant
    Filed: July 5, 2006
    Date of Patent: January 11, 2011
    Assignee: Helsa-Automotive GmbH & Co. KG
    Inventors: Nahum Travitzky, Daniel Galsterer, Peter Greil, Thomas Wolff, Heino Sieber, Lars Weisensel
  • Patent number: 7862635
    Abstract: An exhaust system includes a particulate filter (PF) that is disposed downstream from an engine. The PF filters particulates within an exhaust from the engine. A heating element heats particulate matter in the PF. A catalyst substrate or a flow converter is disposed upstream from said heating element. The catalyst substrate oxidizes the exhaust prior to reception by the heating element. The flow converter converts turbulent exhaust flow to laminar exhaust flow prior to reception by the heating element.
    Type: Grant
    Filed: February 12, 2007
    Date of Patent: January 4, 2011
    Inventors: Eugene V. Gonze, Frank Ament
  • Patent number: 7854792
    Abstract: Aspects include a valve comprising a flowing liquid, operable to control a flow of gas through a port. Certain aspects include reaction chambers operable to react gases, and in some aspects gases are substantially contained within an envelope comprised of a flowing liquid. Certain embodiments control gas entrance into a chamber with a valve comprised of a flowing liquid controlling gas flow through a port. Various gas scrubbing systems are described, including systems comprising reaction chambers operable to react gases that yield substantial amounts of solid reaction products. Methods for controlling gas flow are disclosed. Systems and methods include sequential steps of wet-scrubbing, reacting and further wet-scrubbing a gas stream.
    Type: Grant
    Filed: September 17, 2008
    Date of Patent: December 21, 2010
    Assignee: Airgard, Inc.
    Inventor: Mark Johnsgard
  • Publication number: 20100314584
    Abstract: A reformer reactor is provided for converting hydrocarbon fuel into hydrogen rich gas by auto-thermal reaction process. The reformer reactor has a preferably cylindrically shaped, double wall housing with an inner wall and an outer wall and two side faces, wherein the inner wall and the two side faces form a reaction chamber. Additionally, the inner wall is charged with a first electric charge which prevents the hydrocarbon fuel molecules injected into the reaction chamber by a fuel inlet from hitting the warm inside surfaces of the reaction chamber and burn to soot, subsequently.
    Type: Application
    Filed: July 13, 2007
    Publication date: December 16, 2010
    Applicant: POWERCELL SVENSKA AB
    Inventors: Bård Lindström, Lars Pettersson, Staffan Lundgren
  • Patent number: 7814746
    Abstract: An exhaust device for a diesel engine supplies liquid fuel (6) from a supply source (5) of the liquid fuel (6) to a gas generator (3) which converts the liquid fuel (6) to flammable gas (7) and from which a flammable-gas supply passage (8) is conducted, the flammable-gas supply passage (8) having a flammable-gas outlet (9) communicated with an exhaust-gas route (1) upstream of a diesel-particulate-filter (2), the flammable gas (7) flowed out of the flammable-gas outlet (9) being burnt in exhaust gas (10) to generate combustion heat which can burn fine particles of the exhaust gas (10) remaining at the filter (2). In this exhaust device for a diesel engine, a case (11) for containing the filter (2) accommodates at least part of the gas generator (3).
    Type: Grant
    Filed: February 26, 2007
    Date of Patent: October 19, 2010
    Assignee: Kubota Corporation
    Inventors: Masahiro Aketa, Shuichi Yamada, Toshio Nakahira, Masahiko Sugimoto, Katsushi Inoue
  • Patent number: 7784276
    Abstract: It is intended to efficiently remove particulate substances, such as NOx and soot, without poisoning by Sox, etc. from dilute-combustion effecting internal combustion engines, combustion equipment, etc. There is provided an exhaust gas purifier to be installed in exhaust passage (2) of internal combustion engine (1) or the like, comprising, disposed in the exhaust passage (2), NOx adsorbent (4) capable of temporarily adsorbing nitrogen oxides even in an atmosphere of excess air and capable of desorbing the adsorbed nitrogen oxides upon temperature rise or in a reducing atmosphere, adsorbed substance desorbing means (3) arranged on an exhaust upstream side as compared with the NOx adsorbent (4) and capable of heating the exhaust or converting it to a reducing atmosphere, and combustion device (5) arranged on an exhaust downstream side as compared with the NOx adsorbent (4) and composed of fuel nozzle (6) and igniter (7). In normal operation, the NOx adsorbent (4) adsorbs NOx contained in exhaust gas.
    Type: Grant
    Filed: January 18, 2005
    Date of Patent: August 31, 2010
    Assignee: Yanmar Co., Ltd.
    Inventor: Taisuke Ono
  • Patent number: 7780922
    Abstract: The invention provides apparatus and a method for exothermic treatment of feed material to provide an ash. The apparatus includes a housing extending about a central axis and having first and second ends, and a central mixing zone adjacent the first end. A material intake carries the feed material into the housing and gas enters through a first gas inlet at the first end through guides to create an inner vortex extending axially about said axis and the gas then follows an outer vortex which also extends axially but in the opposite direction from that of the inner vortex. However the inner and outer vortices rotate in the same direction. A gas outlet is positioned to receive spent gas from the housing and an ash outlet is positioned remotely from the mixing zone to receive the ash. If preferred, the position of the ash outlet may be incorporated into the gas outlet. A control system is provided to limit the temperature in the feed material in the housing.
    Type: Grant
    Filed: August 10, 2009
    Date of Patent: August 24, 2010
    Assignee: Mortimer Technology Holdings Limited
    Inventor: Christopher E. Dodson
  • Patent number: 7776279
    Abstract: A combustion apparatus for combusting including: a boiler defining an enclosed flue gas path having a combustion zone and a burnout zone, wherein flue gas is formed in the combustion zone and the combustion flue gas comprising nitrogen oxides; a fuel injector aligned with and introducing fuel into the combustion zone and a combustion air injector aligned with and introducing air into the combustion zone; an overfire air system adjacent the burnout zone comprising an overfire air port adjacent the burnout zone and through which overfire air flows into the burnout zone, and a nitrogen reagent injector having an outlet aligned with the overfire air system and injecting nitrogen reagent gas or small droplets into said overfire air, wherein said small droplets have an average diameter of no greater than 50 microns.
    Type: Grant
    Filed: May 19, 2008
    Date of Patent: August 17, 2010
    Assignee: General Electric Company
    Inventors: Roy Payne, Wei Zhou, Vitali Victor Lissianski, Vladimir M. Zamansky, Larry William Swanson
  • Patent number: 7763214
    Abstract: A reforming device includes a reforming part that subjects a hydrocarbon-based raw material to be reformed to a reforming reaction to form a reducing agent to be supplied to a reducing catalyst for reducing nitrogen oxide selectively. The reforming part has a reforming reaction region through which the raw material to be reformed passes and is reacted with supplied hydrogen atoms supplied so as to be reformed to the reducing agent. For example, a hydrogen permeable membrane having a first surface and a second surface may be provided in the reforming part to permeate hydrogen atoms from the first surface to the second surface and to produce the hydrogen atoms on the second surface. The reforming device can be suitably used for an exhaust gas control system for cleaning exhaust gas, for example.
    Type: Grant
    Filed: September 25, 2006
    Date of Patent: July 27, 2010
    Assignee: Denso Corporation
    Inventors: Katsunori Iwase, Tetsuo Toyama, Shigeru Ooyanagi, Yoshiaki Nishijima, Masahiro Okajima
  • Patent number: 7752839
    Abstract: An exhaust emission purifying apparatus of the present invention has a casing that includes therein a plurality of layered passages which is formed by partitioning an inside of the casing to thereby allow an exhaust passage from an exhaust emission inlet to an exhaust emission outlet to be folded in its direction once or more, a reduction catalyst that reductively purifies NOx by using a reducing agent, a nozzle that injects the reducing agent or a precursor thereof to an exhaust upstream side of the reduction catalyst, and a filter (DPF) that collects PM suspended in an exhaust emission. The reduction catalyst and the filter are disposed in the different layered passages. Consequently, a more compact exhaust emission purifying apparatus having both NOx removal function and PM collection function can be provided.
    Type: Grant
    Filed: February 6, 2008
    Date of Patent: July 13, 2010
    Assignee: Nissan Diesel Motor Co., Ltd.
    Inventors: Kiminobu Hirata, Nobuhiko Masaki, Masakazu Yano
  • Patent number: 7718141
    Abstract: An automatic VOC concentration control apparatus is capable of adjusting the concentration of VOC in a catalytic device under a predetermined value. The automatic VOC concentration control apparatus includes a housing having an inlet port and an outlet port for introducing and discharging VOC vapor, respectively, one or more cooling tubes for cooling the VOC vapor introduced through the inlet port, and one or more porous members for holding droplets of VOC liquid thereon as the VOC vapor is condensed into liquid.
    Type: Grant
    Filed: September 13, 2005
    Date of Patent: May 18, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Woong-jae Chang
  • Patent number: 7713325
    Abstract: A method for manufacturing a honeycomb filter for purifying exhaust gas, including: providing a columnar body including porous ceramic and having a wall portion and through holes partitioned by the wall portion, the through holes extending in a length direction of the columnar body, coating a sealing material including one or more organic components over a circumferential surface of the columnar body to form a sealing material layer; and heating the columnar body having the sealing material layer on the circumferential surface of the columnar body at a temperature sufficient to lower a total weight of the organic component with respect to a total weight of the honeycomb filter, V?.
    Type: Grant
    Filed: February 19, 2008
    Date of Patent: May 11, 2010
    Assignee: Ibiden Co., Ltd.
    Inventor: Toshiaki Shibata
  • Patent number: 7704473
    Abstract: A purification method excellent in removing particulates or the like from exhaust gas from an internal combustion engine, in particular, a diesel engine or the like. The purification method uses an exhaust gas purification apparatus including an oxidation zone installed with an oxidation catalyst supporting both platinum and palladium, and a filtering zone installed with a particulate filter, along exhaust gas flow at the exhaust gas passage of an internal combustion engine. Hydrocarbon-based liquid is supplied to the inflow side of the exhaust gas of the oxidation zone at the time when 2 to 10 g of particulates per 1 liter of the particulate filter are caught, to raise temperature of the exhaust gas up to equal to or higher than 550° C. by the oxidation catalyst so as to make the residue of the particulate filter combusted.
    Type: Grant
    Filed: October 5, 2005
    Date of Patent: April 27, 2010
    Assignees: ICT Co., Ltd., International Catalyst Technology, Inc.
    Inventors: Masanori Ikeda, Atsushi Fukumoto
  • Patent number: 7695540
    Abstract: There is disclosed a plugged honeycomb structure capable of suppressing a rise of a pressure loss. A plugged honeycomb structure 1 of the present invention comprises a columnar honeycomb structure 2 having porous partition walls 4 and a plurality of cells 5 which are defined by the partition walls 4 and which extend through the structure from one end surface 7a to the other end surface 7b thereof; a plurality of first plugging members 3a which plug openings of predetermined cells 5a on a side of the one end surface 7a; and a plurality of second plugging members 3b which plug openings of the remaining cells 5b on a side of the other end surface 7b. In the plugged honeycomb structure 1, the first plugging member 3a includes a convex portion 6 having a shape convex toward the center of the cell 5 in an axial direction on an end portion of the member on a side opposite to the end surface 7a in which the cell 5a to be plugged is opened.
    Type: Grant
    Filed: January 16, 2007
    Date of Patent: April 13, 2010
    Assignee: NGK Insulators, Ltd.
    Inventor: Takashi Mizutani
  • Patent number: 7670404
    Abstract: This structure (11) comprises first and second filtering elements (15A, 15B) extending essentially parallel to a longitudinal axis (X-X?) of the structure (11) between an admission region (21) of the gases into the structure (11) and an evacuation region (23) of the gases from the structure, and comprises a seal (17) for joining these elements (15A, 15B). The seal (17) comprises at least one downstream pat (43) which has a thermal mass per unit length greater than the thermal mass per unit length of an upstream part (41) of the seal (17). The invention is for use in particulate filters for the exhaust gases of a motor vehicle diesel engine.
    Type: Grant
    Filed: September 2, 2005
    Date of Patent: March 2, 2010
    Assignee: Saint-Gobain Centre de Recherches Et d'Etudes Europeen
    Inventors: Sébastien Bardon, Anthony Briot, Vincent Gleize
  • Patent number: 7662204
    Abstract: A vehicle exhaust gas purification device has a multipart outer housing (10) including a tube (12) and end walls (14) that have been reshaped into funnels. The tube (12) and the end walls (14) are fitted into each other and brazed, soldered or welded to each other.
    Type: Grant
    Filed: July 28, 2005
    Date of Patent: February 16, 2010
    Assignee: Emcon Technologies LLC
    Inventors: Erich Forster, Peter Kroner, Otto Steinhauser
  • Patent number: 7661265
    Abstract: An exhaust gas system for an internal combustion engine, comprising an oxidation catalytic converter disposed in a first exhaust gas manifold section with which the exhaust gas outlets of a first portion of the cylinders communicate, and a hydrolysis catalytic converter disposed in a second exhaust gas manifold section with which the exhaust gas outlets of the remaining portion of the cylinders communicate. The hydrolysis catalytic converter, together with the oxidation catalytic converter that annularly surrounds it, are installed in a common housing. A tubular portion of the second exhaust gas manifold section extends into the housing and accommodates the hydrolysis catalytic converter in its end portion. A tubular portion of a first exhaust gas manifold section surrounds the tubular portion of the second exhaust gas manifold section, resulting in an annular in-flow chamber for the oxidation catalytic converter that simultaneously serves as a heating chamber.
    Type: Grant
    Filed: May 4, 2007
    Date of Patent: February 16, 2010
    Assignee: MAN Nutzfahrzeuge Osterreich AG
    Inventor: Thomas Baumgartner
  • Patent number: 7648547
    Abstract: A honeycomb filter for purifying exhaust gases that is free from occurrence of cracks and coming-off of plugs and is superior in durability upon its use. The honeycomb filter includes a columnar body made of porous ceramics, which has a number of through holes placed in parallel with one another in the length direction with wall portion interposed therebetween, designed so that predetermined of the through holes are filled with plugs at one end of the columnar body, while the through holes not filled with the plugs at the one end are filled with plugs at the other end of the columnar body, and part of or the entire wall portion functions as a plug for collecting particles. A bending strength F? (MPa) of the honeycomb filter and a length L (mm) of the plug in the length direction of the through hole satisfy the relationship of F?×L?30.
    Type: Grant
    Filed: April 9, 2003
    Date of Patent: January 19, 2010
    Assignee: Ibiden Co., Ltd.
    Inventor: Kazushige Ohno
  • Patent number: 7648550
    Abstract: Disclosed are ceramic honeycomb articles, which are composed predominately of a crystalline phase cordierite composition. The ceramic honeycomb articles possess a microstructure characterized by a unique combination of relatively high total porosity of less than 54%, and relatively narrow pore size distribution having a d10 pore diameter of not less than 8 ?m, a d90 pore diameter of not greater than 35 ?m, and a value of df=(d50?d10)/d50 of less than 0.50. The articles exhibit high thermal durability and high filtration efficiency coupled with low pressure drop across the filter. Such ceramic articles are particularly well suited for filtration applications, such as diesel exhaust filters or DPFs. Also disclosed are methods for manufacturing the ceramic articles of the present invention.
    Type: Grant
    Filed: August 25, 2006
    Date of Patent: January 19, 2010
    Assignee: Corning Incorporated
    Inventors: Douglas Munroe Beall, Isabelle Marie Melscoet-Chauvel, Gregory Albert Merkel
  • Publication number: 20090311147
    Abstract: Process for storing an additive and injecting it into the exhaust gases of an engine and comprising two tanks for storing the additive and one pump for supplying the additive from these tanks to an injection line, these two tanks being in parallel and each being connected to the pump by a branch of the supply line, each of these branches being equipped with a non-return valve and these two valves being calibrated so that the valve located in the branch coming from the first tank (1) is normally open but closes when this tank is empty, and so that the valve located in the branch coming from the other tank (2) is normally closed but opens when the valve from tank (1) is closed or when the branch coming from this tank (1) is blocked.
    Type: Application
    Filed: November 14, 2007
    Publication date: December 17, 2009
    Inventors: Philippe Lucien Valmy Georis, Nadja Walling
  • Patent number: 7631493
    Abstract: A diesel particulate filter (14) which traps particulate matter and a NOx trap catalyst (13) which traps nitrogen oxides are installed in series in an exhaust passage (10) of a diesel engine (1). A controller (21) calculates a particulate matter deposition amount in the diesel particulate filter (14) (S4). The controller (21), when the particulate matter deposition amount exceeds a first predetermined amount (PM2), prevents sharp increase of the particulate matter deposition amount by prohibiting rich spike where the oxygen concentration of the exhaust gas is controlled to a value corresponding to a rich air-fuel ratio in order to regenerate the NOx trap catalyst (13) (S301, S302, S306), and prevents the particulate matter deposition amount of the diesel particulate filter (14) from reaching a limit.
    Type: Grant
    Filed: December 23, 2005
    Date of Patent: December 15, 2009
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Takashi Shirakawa, Yasutaka Ishibashi, Hikari Todoroki
  • Publication number: 20090226364
    Abstract: A process for treating acid gases comprising hydrogen sulfide comprises introducing a first acid gas and a first oxygen-containing gas into a reducing furnace to produce a first oxidized gas stream, cooling the first oxidized gas stream in a first heat recovery system, introducing the cooled gas stream into a sulfur condenser to produce a sulfur-stripped gas, introducing the sulfur-stripped gas and a second oxygen-containing gas into an oxidizing furnace to produce a second oxidized gas stream and cooling the second oxidized gas stream in a second heat recovery system. The first acid gas can be acid gas comprising hydrogen sulfide produced in refineries. The spent acid can be spent sulfuric acid from a sulfuric acid alkylation process. The cooled second oxidized gas stream can be further treated in a spent acid recovery plant or a sulfur recovery unit.
    Type: Application
    Filed: March 7, 2008
    Publication date: September 10, 2009
    Applicant: E. I. du Pont de Nemours and Company
    Inventors: Zeru Berhane Tekie, Luis Alberto Chu, Eugene F. Hartstein
  • Patent number: 7584603
    Abstract: An active system for regenerating a NOx adsorber and a particulate filter, the system includes a fuel source, a reformer for generating hydrogen and carbon monoxide in fluid communication with the fuel source, a first valve, a second valve, and a third valve in fluid communication with the reformer, an oxidation catalyst, a NOx adsorber located downstream from the oxidation catalyst, a particulate filter located downstream from the NOx adsorber; and wherein the first valve, the second valve, and the third valve control fluid flow from the reformer to the oxidation catalyst, the NOx adsorber, and the particulate filter.
    Type: Grant
    Filed: December 20, 2004
    Date of Patent: September 8, 2009
    Assignee: Delphi Technologies, Inc.
    Inventors: Joachim Kupe, James Zizelman, Jean J. Botti
  • Publication number: 20090152501
    Abstract: The invention relates to a process as well as a device for removal of exhaust gas (7) that contains oxidizable pollutants. The exhaust gas (7) that contains oxidizable pollutants is introduced at a suitable location (a) into a flue gas system (K) that corresponds to a process oven (D) and is mixed with hot, oxygen-containing flue gas that flows through the flue gas system, whereby the exhaust gas (7) that contains oxidizable pollutants is heated to a temperature of at least 600° C.
    Type: Application
    Filed: December 11, 2008
    Publication date: June 18, 2009
    Applicant: Linde Aktiengesellschaft
    Inventors: Konstanze Furchtbar, Roland THALHAMMER, Klemens WAWRZINEK
  • Patent number: 7534400
    Abstract: An apparatus for controlling NOx emissions which includes a chamber having a wall surface and an interior, a flue gas entrance and a flue gas exit for a flue gas to enter and exit the interior of the chamber, a gas quenching zone in which the temperature of the gas can be lowered, an ozone injection and retention zone in the chamber, and a liquid spray zone including at least one spray nozzle for spraying a liquid towards the wall surface.
    Type: Grant
    Filed: March 28, 2007
    Date of Patent: May 19, 2009
    Assignee: Belco Technologies Corporation
    Inventors: Joseph Hsieh, Kevin R. Gilman, Dominique Philibert, Scott Eagleson, Andrew Morin
  • Patent number: 7510696
    Abstract: A method and apparatus for the production of hydrogen-rich gas are provided. The method and apparatus prevent over-reduction of iron oxide-based shift catalyst by introducing an oxidative stream along with a carbon monoxide containing gaseous feed stream from a catalytic steam reformer to the catalyst bed region and thereby limits structural deterioration of the catalyst. Various sources may provide the oxidative stream including a shift catalyst bed region and a selective oxidation catalyst region.
    Type: Grant
    Filed: May 5, 2005
    Date of Patent: March 31, 2009
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Blaine Edward Herb, Shoou-I Wang, Xiang-Dong Peng, William Carl Rooney, Kevin Boyle Fogash, David Hon Sing Ying
  • Patent number: 7501102
    Abstract: A catalytic reactor or heat exchanger includes a monolith defining a plurality of leaves, the monolith having a generally annular cross-section. The monolith is disposed within a generally cylindrical outer tube, and around a corrugated inner tube. The reactor includes a device for urging the monolith radially outward, so as to maintain contact between the monolith and the outer tube. Such device may include a coned washer, or it may be defined by a folded flap that is integral with the inner tube. In either case, the reactor compensates for metal creep, and virtually insures continued contact between the monolith and the outer tube.
    Type: Grant
    Filed: July 28, 2005
    Date of Patent: March 10, 2009
    Assignee: Catacel Corp.
    Inventors: William A. Whittenberger, David A. Becker, Sudipta Chattopadhyay, L. Amanda Suffecool
  • Patent number: 7494633
    Abstract: Apparatus is described for treating an effluent fluid stream from a semiconductor manufacturing process tool. The apparatus comprises a combustion chamber, means for heating the combustion chamber, and a nozzle for injecting the effluent stream into the combustion chamber. The apparatus is configured to enable a fuel and an oxidant to be selectively injected into the effluent stream as required to optimise the combustion conditions for a particular effluent stream. In one to embodiment, a lance projecting into the nozzle selectively injects an oxidant into the effluent stream, and a sleeve surrounding the nozzle selectively injects a fuel into the effluent stream.
    Type: Grant
    Filed: August 2, 2005
    Date of Patent: February 24, 2009
    Assignee: Edwards Limited
    Inventors: Gareth David Stanton, Andrew James Seeley, James Robert Smith
  • Patent number: 7462333
    Abstract: In a device for the purification of exhaust gases, especially exhaust gases consisting of fluorine-containing compounds, bore holes (7,8) are made in a ring burner (5) for the separate supply of combustion gas and oxygen on a single hole circle around a central exhaust gas supply (9). The ring burner is arranged in a combustion chamber (1). The combustion chamber is closed up to an annular gap (20) between a cylindrical jacket (4) and a front face (16). Additional oxygen or additional air is introduced into the annular gap (20).
    Type: Grant
    Filed: April 4, 2003
    Date of Patent: December 9, 2008
    Assignee: Das-Dunnschicht Anlagen Systeme GmbH Dresden
    Inventors: Horst Reichardt, Andreas Frenzel, Konrad Gehmlich, Wido Wiesenberg, Egbert Merforth, Lothar Ritter
  • Publication number: 20080299016
    Abstract: A multi-stage selective catalytic reduction (SCR) unit (32) provides efficient reduction of NOx and other pollutants from about 50-550° C. in a power plant (19). Hydrogen (24) and ammonia (29) are variably supplied to the SCR unit depending on temperature. An upstream portion (34) of the SCR unit catalyzes NOx+NH3 reactions above about 200° C. A downstream portion (36) catalyzes NOx+H2 reactions below about 260° C., and catalyzes oxidation of NH3, CO, and VOCs with oxygen in the exhaust above about 200° C., efficiently removing NOx and other pollutants over a range of conditions with low slippage of NH3. An ammonia synthesis unit (28) may be connected to the SCR unit to provide NH3 as needed, avoiding transport and storage of ammonia or urea at the site. A carbonaceous gasification plant (18) on site may supply hydrogen and nitrogen to the ammonia synthesis unit, and hydrogen to the SCR unit.
    Type: Application
    Filed: May 16, 2008
    Publication date: December 4, 2008
    Applicant: Siemens Power Generation, Inc.
    Inventors: Anatoly Sobolevskiy, Joseph A. Rossin
  • Patent number: 7409823
    Abstract: A method and system for introducing supplemental material to an exhaust aftertreatment device, including: a delivery system, an air pump operable to input pressurized air to the delivery system, and a turbosupercharger of an internal combustion engine operable to deliver pressurized air to an inlet of the air pump. The supplemental material introduced to the exhaust aftertreatment device is pressurized by the pressurized air input from the air pump, and the air inlet to the air pump is pressurized by the turbosupercharger for the internal combustion engine. The delivery system uses existing pressurized air generated within the engine system from the turbosupercharger to supplement air pressure supplied to the turbine-style air pump used by the delivery system. The supplemental material may comprise ammonia, hydrogen, carbon monoxide, or urea.
    Type: Grant
    Filed: June 29, 2004
    Date of Patent: August 12, 2008
    Assignee: Delphi Technologies, Inc.
    Inventors: Kenneth S. Price, Joseph V. Bonadies, John E. Kirwan, David Alexander Goulette
  • Patent number: 7393509
    Abstract: The present invention provides a honeycomb structure 1 comprising partition walls 2 so as to form a plurality of cells 3 extending from one end face 42 to the other end face 44, and a plug portion 4 plugging the cell 3 at the end face 42 and/or 44. In the honeycomb structure 1, the plug portion 4 has a hollow and convex shape, and at least a part of the plug portion 4 is protruding from the end face.
    Type: Grant
    Filed: December 8, 2004
    Date of Patent: July 1, 2008
    Assignee: NGK Insulators, Ltd.
    Inventor: Shinji Yamaguchi
  • Patent number: 7377102
    Abstract: A device and method for heating exhaust gas from the combustion of fossil fuel upstream of an emissions control device, especially a diesel particulate filter. A conduit receives an exhaust gas flow, and is in fluid communication with the emissions control device for supplying exhaust gas thereto. A flow straightener is disposed in the conduit, and a portion of the exhaust gas flows through the flow straightener. An igniter is disposed in the conduit between the flow straightener and the emissions control device for igniting fuel supplied thereto to produce a flame to heat the exhaust gas flow.
    Type: Grant
    Filed: August 11, 2005
    Date of Patent: May 27, 2008
    Assignee: CleanAir Systems
    Inventors: Michael Roach, Michael Tripodi, William Tilton
  • Publication number: 20080107571
    Abstract: A gas generating system comprises a catalytic reactor in fluid communication with a sulfur separator. The catalytic reactor oxidizes a fuel to provide a supply of carbon dioxide. The sulfur separator removes sulfur components from the stream before or after the fuel is oxidized. A portion of the hot exhaust gas from the catalytic reactor can be used to regenerate an adsorption bed of the sulfur separator.
    Type: Application
    Filed: November 3, 2006
    Publication date: May 8, 2008
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: RUSSELL JOHNSON, STEPHEN F. YATES, REHAN ZAKI
  • Patent number: 7367182
    Abstract: A forced regeneration device which performs regeneration of a particulate filter includes oxidation catalysts (23, 24a) disposed upstream from the particulate filter or in said particulate filter and a burner (30) located upstream from the oxidation catalysts and operable switching between a combustion mode for combusting a fuel spray by inflammation to raise temperature of exhaust gases in an exhaust passage and a fuel supply mode for supplying only a fuel spray to the exhaust passage without inflammation. After the burner operates in the combustion mode, the burner operation is switched to the fuel supply mode.
    Type: Grant
    Filed: April 23, 2004
    Date of Patent: May 6, 2008
    Assignee: Mitsubishi Fuso Truck and Bus Corporation
    Inventors: Hideyuki Takahashi, Katsunori Umezawa, Yasuhiro Tsutsui