Plural Chemical Reaction Stages Patents (Class 422/170)
  • Publication number: 20150023854
    Abstract: The present disclosure relates to an exhaust gas post-processing apparatus, and more particularly, to an exhaust gas post-processing apparatus and a control method thereof which reduce emission of nitrogen oxide (NOx) by bypassing high-temperature exhaust gas to a front end of a selective catalytic reduction. Accordingly, some embodiments of the present disclosure have been made to solve one or more of the aforementioned problems, and some embodiments of the present disclosure increase a reducing rate of nitrogen oxide by controlling a flow of exhaust gas by changing a structure of an exhaust pipe. The exhaust gas post-processing apparatus and the control method thereof according to the present disclosure may increase a reducing rate of nitrogen oxide.
    Type: Application
    Filed: January 25, 2013
    Publication date: January 22, 2015
    Inventors: Ji Hoon Lim, Min Seok Ko, Byoung Gul Oh, Kyung Min Park, Sang Hoon Kim
  • Patent number: 8932379
    Abstract: An exhaust gas purification system with which diesel particulate filter (“DPF”) regeneration can be continued even when deceleration occurs during the DPF regeneration. The system includes a regeneration deceleration period intake/exhaust control unit that, when a vehicle decelerates during the DPF regeneration, increases an exhaust gas flow rate through an exhaust pipe by controlling respective openings of an exhaust gas recirculation (“EGR”) device and an intake throttle and adjusting a turbocharging amount of a high pressure stage turbocharger.
    Type: Grant
    Filed: June 10, 2011
    Date of Patent: January 13, 2015
    Assignee: Isuzu Motors Limited
    Inventors: Takashi Ikeda, Takayuki Mukunashi, Hiroyuki Ishikawa
  • Patent number: 8932529
    Abstract: A desulphurization and decarbonisation apparatus includes (a) a starter for starting a reaction between an electropositive metal and sulphur oxides and carbon dioxide of a flue gas; (b) a first reaction chamber with a cooling unit for reducing the sulphur oxides and the carbon dioxide of the flue gas in an exothermic reaction with the electropositive metal; (c) a second reaction chamber for generating a first suspension including suspended carbon containing reaction products and sulphur containing reaction products by extracting solid reaction products of the first reaction chamber in a solvent; (d) a third reaction chamber for oxidizing the first suspension to generate a second suspension including suspended carbon containing reaction products and oxidized sulphur containing reaction products; and (e) a separator for separating the oxidized sulphur containing reaction products from the suspended carbon containing reaction products.
    Type: Grant
    Filed: February 10, 2014
    Date of Patent: January 13, 2015
    Assignee: Siemens Aktiengesellschaft
    Inventors: Elena Arvanitis, Manfred Baldauf, Günter Schmid, Dan Taroata, Frank Walachowicz
  • Patent number: 8932546
    Abstract: A catalytically active particulate filter is proposed which is suitable for use in an exhaust gas cleaning system for diesel engines. The particulate filter removes diesel soot particles from the exhaust gas and is also effective to oxidize carbon monoxide and hydrocarbons and to convert nitrogen monoxide at least proportionally into nitrogen dioxide. The particulate filter comprises a filter body (3) and two catalytically active coatings (1) and (2) which contain platinum and palladium, or platinum or palladium respectively, wherein the platinum content of the second catalytically active coating (2) is higher than the platinum content of the first catalytically active coating (1).
    Type: Grant
    Filed: January 29, 2013
    Date of Patent: January 13, 2015
    Assignee: Umicore AG & Co. KG
    Inventors: Stephanie Frantz, Ulrich Goebel, Franz Dornhaus, Michael Schiffer
  • Patent number: 8926726
    Abstract: A exhaust gas purification device is structured such that it is possible to improve an assembling work ability or a maintenance work ability of gas purifying bodies or exhaust gas purifying cases. In an exhaust gas purification device provided with gas purifying bodies which purify an exhaust gas discharged by an engine, and a gas purifying housing which is provided with the gas purifying bodies therein, the exhaust gas purification device is structured such that a support bracket which supports the gas purifying housing is provided, a bolt hole is formed in the support bracket, an insertion guide is formed in the support bracket, and an attaching bolt is engaged with and disengaged from the bolt hole via the insertion guide.
    Type: Grant
    Filed: February 24, 2011
    Date of Patent: January 6, 2015
    Assignee: Yanmar Co., Ltd.
    Inventor: Masataka Mitsuda
  • Patent number: 8920531
    Abstract: The present invention relates to device and method for reducing soot particles. The device for reducing soot particles includes a first filter provided to an exhaust gas flow passage through which exhaust gas from a diesel engine flows to have a predetermined volume of a plurality of grains to be operated as a volumetric filtration system, and a second filter provided to a predetermined position of the second filter to be operated as a surface filtration system.
    Type: Grant
    Filed: December 10, 2010
    Date of Patent: December 30, 2014
    Assignee: CA Tech Inc.
    Inventor: In-Gweon Lim
  • Publication number: 20140373515
    Abstract: An exhaust gas aftertreatment component includes a ceramic carrier body with a plurality of axial flow channels, wherein the carrier body has an inner region and an outer region, which radially surrounds the inner region. A cell density of the carrier body is smaller in the inner region than a cell density in the outer region. At least the outer region of the carrier body has a coaling, wherein the coating of the outer region has an HC adsorber function for a reversible adsorption of unburnt hydrocarbons. An exhaust gas system, which is equipped with such an exhaust gas aftertreatment component, and a vehicle, which has such an exhaust gas system are also provided.
    Type: Application
    Filed: September 7, 2014
    Publication date: December 25, 2014
    Applicant: VOLKSWAGEN AKTIENGESELLSCHAFT
    Inventor: Valeri Seiler
  • Publication number: 20140374064
    Abstract: Apparatuses and systems for reduction and elimination of toxic gases emitted from a motor vehicle or industrial exhaust system. The systems may be single-tier or two-tier, and include at least one direct contact heat exchanger wherein exhaust gas is condensed or dissolved in cold moist air vapor. Uncondensed and undissolved gases may be recirculated into the direct contact heat exchanger to be treated again. The systems also include at least one post-treatment tank wherein condensate liquids and gas solutions are subject to agglomeration and are finally discharged into the environment as a clean liquid. The systems provided herein may complement the existing catalytic converters used in motor vehicles.
    Type: Application
    Filed: September 2, 2014
    Publication date: December 25, 2014
    Inventor: Saeed J. Almalowi
  • Patent number: 8916100
    Abstract: A reducing agent aqueous solution mixing device includes an exhaust pipe, an injector, a mixing pipe, an inner pipe and a flow section. The exhaust pipe includes an elbow part and a linear part. The injector is disposed in the elbow part and injects a reducing agent aqueous solution. The mixing pipe receives the reducing agent aqueous solution injected from the injector, and includes an outlet portion formed spaced apart from an inner wall of the exhaust pipe, and a plurality of openings formed on the outer peripheral surface thereof. The inner pipe is disposed in the linear part and allows the exhaust gas to flow through the inside and the outer periphery thereof. The flow section is formed between the outlet portion of the mixing pipe and the inner wall of the exhaust pipe to direct the exhaust gas to the inner pipe.
    Type: Grant
    Filed: April 18, 2012
    Date of Patent: December 23, 2014
    Assignee: Komatsu Ltd.
    Inventors: Tadashi Iijima, Hirofumi Kizawa, Boku Itou, Shinji Tsujimura, Takashi Katou, Tetsuo Orita, Kanji Namimatsu, Issei Hara, Hiroyuki Tomioka
  • Publication number: 20140363359
    Abstract: A device and a method are described for lowering the content of NOx and N2O in gases.
    Type: Application
    Filed: December 8, 2012
    Publication date: December 11, 2014
    Applicant: THYSSENKRUPP INDUSTRIAL SOLUTIONS AG
    Inventors: Meinhard Schwefer, Rolf Siefert, Stefan Pinnow
  • Patent number: 8906134
    Abstract: A method for engine-out soot flow rate prediction of an exhaust gas treatment system is provided. A measured level of oxides of nitrogen in the exhaust gas treatment system is received. An engine fuel injection timing and air-fuel ratio of an engine producing the oxides of nitrogen are also received. An engine timing factor is determined based on the engine fuel injection timing. An engine air-fuel ratio factor is determined based on the engine air-fuel ratio. An engine-out soot flow rate prediction is generated based on the measured level of oxides of nitrogen, the engine timing factor, and the engine air-fuel ratio factor.
    Type: Grant
    Filed: November 8, 2012
    Date of Patent: December 9, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Min Sun, Michelangelo Ardanese, Jean-Yves Lavallee, Amanpal S. Grewal, Paul Jasinkiewicz
  • Publication number: 20140356267
    Abstract: A process and system are disclosed for capturing carbon dioxide from a gas stream. The process and system comprises a first reactor in which a slurry of a metal silicate is reacted together with an ammonium salt in aqueous solution. The salt is one that does not form a precipitate with the metal silicate. In the first reactor the metal silicate reacts with the solution to produce a slurry of silica in an aqueous solution of a salt of the metal and ammonia. Ammonia gas is drawn off directly from the first reactor, and ammonia, including the ammonia drawn off from the first reactor, is added to the gas stream. The process and system also comprises scrubbing the gas stream, including with the added ammonia, with an aqueous solution, whereby the carbon dioxide and ammonia are absorbed into the solution and ammonium carbonate salt(s) are produced.
    Type: Application
    Filed: October 5, 2012
    Publication date: December 4, 2014
    Inventor: Richard J. Hunwick
  • Patent number: 8894941
    Abstract: SOx removal equipment for reducing sulfur oxides from flue gas from a boiler, a cooler provided on a downstream side of the SOx removal equipment, for reducing the sulfur oxides that remain in the flue gas and decrease a gas temperature, CO2 recovery equipment including an absorber for bringing CO2 in the flue gas into contact with a CO2 absorption liquid to be reduced, and a regenerator for causing the CO2 absorption liquid to emit CO2 to recover CO2 and regenerate the CO2 absorption liquid, a heat exchanger which is provided on an inlet passage side of the electric dust collector, for decreasing a temperature of the flue gas are included, and a mist generation material in the flue gas is converted from a gas state to a mist state to cause particulates in the flue gas to arrest and reduce the mist generation material in the mist state.
    Type: Grant
    Filed: May 31, 2011
    Date of Patent: November 25, 2014
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Tatsuto Nagayasu, Takashi Kamijo, Masayuki Inui, Tsuyoshi Oishi, Hiromitsu Nagayasu, Hiroshi Tanaka, Takuya Hirata, Tatsuya Tsujiuchi, Susumu Okino, Naoyuki Kamiyama, Seiji Yoshihara
  • Patent number: 8889078
    Abstract: A porous oxide catalyst includes porous oxide, and an oxygen vacancy-inducing metal which induces an oxygen vacancy in a lattice structure of a porous metal oxide.
    Type: Grant
    Filed: March 15, 2011
    Date of Patent: November 18, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sang-min Ji, Hyun-chul Lee, Doo-hwan Lee, Seon-ah Jin
  • Patent number: 8888883
    Abstract: A ceramic honeycomb structure suitable for particulate filters, having an inlet face and an outlet face, comprising a plurality of inlet cells and a plurality of outlet cells extending through the structure from the inlet face to the outlet face, the inlet cells being open at the inlet face and closed where adjoining the outlet face, and the outlet cells being open at the outlet face and closed where adjoining the inlet face. The inlet and/or outlet cells are quadrangular in cross-section and are arranged in an alternating pattern; the outlet cells may have a cross-sectional area generally smaller than that of inlet cells and no point of a given inlet cell is closer to an adjacent inlet cell than to an adjacent outlet cell. A process for preparing the ceramic honeycomb structure is also disclosed.
    Type: Grant
    Filed: March 25, 2011
    Date of Patent: November 18, 2014
    Assignee: Imerys
    Inventors: Thierry Salmona, Carl De Poncins
  • Publication number: 20140335005
    Abstract: The present invention discloses a method of removing sulfur oxides and/or nitrogen oxides in a regeneration flue gas emitted from a regenerator of a catalytic cracking plant and recovering the elemental sulfur and an apparatus therefor.
    Type: Application
    Filed: July 27, 2012
    Publication date: November 13, 2014
    Inventors: Dawei Guo, Jiushun Zhang, Anguo Mao, Chaogang Xie, Jun Fu, Wei Wang, Jingchuan Yu
  • Patent number: 8883100
    Abstract: The present invention relates to a particle filter comprising a porous carrier body, an SCR active component and an oxidation catalyst, wherein the SCR active component is present as coating on the exhaust-gas entry surface and the inner surface of the porous carrier body and the oxidation catalyst as coating on the exhaust-gas exit surface of the porous carrier body. According to the invention the oxidation catalyst changes its function depending on operating conditions. In normal operation it serves as NH3 slip catalyst for oxidizing excess NH3 and during filter regeneration it operates according to the 3-way principle for converting NOx and CO. The invention also relates to a method for producing the particle filter, the use of the particle filter for treating exhaust gases from the combustion of fossil, synthetic or biofuels as well as an exhaust-gas cleaning system which contains the particle filter according to the invention.
    Type: Grant
    Filed: November 4, 2009
    Date of Patent: November 11, 2014
    Assignee: Sued-Chemie IP GmbH & Co. KG
    Inventors: Martin Paulus, Klaus Wanninger
  • Publication number: 20140328739
    Abstract: A method and apparatus for treating an exhaust or waste gas stream using Silic Pollution Reduction System (SPRS) is provided to remove at least one unwanted material to clean the exhaust or waste gas stream by gas stabilisation to allow the cleaned gas stream to be discharged directly to atmosphere. The apparatus includes at least three treatment stations for treating the exhaust or waste gas stream in sequence, in which at least one treatment station is a wet reactor containing a nucleating or precipitating liquid for removing the unwanted material as a solid and for oxygenating the remaining gas stream from which the unwanted material has been removed, and at least one treatment station is or has a gas compressing stage or component for compressing the gas stream being treated. The advantage of the method and apparatus is that the treated gas stream can be discharged directly to atmosphere with reduced amounts of pollutants.
    Type: Application
    Filed: September 5, 2012
    Publication date: November 6, 2014
    Applicant: Emission Logistics PTY LTD
    Inventors: Florijan Silic, Gabriel Silic, Ivan Silic, Mark Silic
  • Patent number: 8877152
    Abstract: Methods and systems for the removal of SO2 from waste combustion flue gas are described herein. One such system for removing SO2 from waste combustion flue gas containing SO2 uses a semi-dry desulfurization system for contacting the flue gas with a solvent moistened absorption material. Thereafter, a recirculated water quench is used for contacting the flue gas with recirculated water at a relatively low pH, followed by a condenser used for contacting the flue gas with a water spray. Additionally, a NaOH supply for supplying NaOH to the condenser and an oxidizing catalyst supply for supplying an oxidizing catalyst to the condenser, are likewise used to produce cleaned flue gas for release to the atmosphere.
    Type: Grant
    Filed: March 22, 2013
    Date of Patent: November 4, 2014
    Assignee: ALSTOM Technology Ltd
    Inventors: Daniel Per Niklas Persson, Mati Maripuu, Marja Swahn
  • Publication number: 20140322089
    Abstract: In one embodiment, a system for treating a gas stream comprising NOx produced from a used or spent acid pickling solution includes a pickling apparatus, a first chamber, and a second chamber. The pickling apparatus includes an inlet adapted for introducing a reducing agent into contact with the acid pickling solution, wherein the reducing agent reacts with free nitric acid in the acid pickling solution to form NOx; and a headspace in which gas comprising NOx collects. The first chamber includes a first inlet communicating with the headspace, a second inlet communicating with a source of ozone, and an interior volume adapted to contact the NOx gas and the ozone. The second chamber may include a third inlet communicating with a source of water vapor, an interior volume adapted to contact the gaseous effluent from the first chamber with the water vapor introduced through the third inlet, and an outlet for collecting solubilized nitric acid from the interior volume of the second chamber.
    Type: Application
    Filed: June 4, 2014
    Publication date: October 30, 2014
    Applicant: ATI PROPERTIES, INC.
    Inventor: James A. Moore
  • Publication number: 20140322114
    Abstract: A three-way catalyst including a mixture of nickel and copper is provided for reducing carbon monoxide, hydrocarbon emissions, and nitrogen oxides from vehicle engine exhausts. The catalyst is impregnated onto a carrier substrate which is non-reactive with nickel and copper. When used in a vehicle exhaust gas treatment system, the nickel-copper catalyst provides improved efficiency in reducing CO, HC, and NOx emissions over the use of conventional three-way-catalysts and provides enhanced oxygen storage capacity (OSC) and water-gas-shift (WGS) functions.
    Type: Application
    Filed: April 29, 2013
    Publication date: October 30, 2014
    Applicant: Ford Global Technologies, Inc.
    Inventors: Hungwen Jen, Eva Thanasiu, Jeffrey Scott Hepburn
  • Patent number: 8870987
    Abstract: An object of the present invention is to detect any breakdown or failure of a particulate filter more appropriately. A failure detecting apparatus for detecting failure of a particulate filter according to the present invention comprises an acquiring section which acquires an amount of PM contained in an exhaust gas allowed to outflow from the particulate filter; a regeneration process executing section which executes a filter regeneration process for oxidizing and removing PM deposited in the particulate filter; and a failure judging section which judges that the particulate filter is in the failure state if a decreased amount of the amount of PM contained in the exhaust gas acquired by the acquiring section, during a predetermined period of time as started from a point in time at which the execution of the filter regeneration process performed by the regeneration process executing section is completed, is not equal to or larger than a predetermined reference amount.
    Type: Grant
    Filed: November 12, 2010
    Date of Patent: October 28, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kazuya Takaoka, Daisuke Shibata
  • Patent number: 8871164
    Abstract: SOx removal equipment for reducing sulfur oxides from flue gas from a boiler, a cooler which is provided on the downstream side of the SOx removal equipment, for reducing the sulfur oxides from the flue gas and for decreasing a gas temperature, CO2 recovery equipment including: an absorber for bringing CO2 in the flue gas into contact with a CO2 absorption liquid so as to be reduced; and a regenerator for causing the CO2 absorption liquid to emit CO2 so as to recover CO2 and regenerate the CO2 absorption liquid, and a wet type electric dust collector for reducing a mist generation material which is a generation source of mist that is generated in the absorber of the CO2 recovery equipment before introducing the flue gas to the CO2 recovery equipment, are included.
    Type: Grant
    Filed: May 31, 2011
    Date of Patent: October 28, 2014
    Assignee: Mitsubushi Heavy Industries, Ltd.
    Inventors: Tatsuto Nagayasu, Takashi Kamijo, Masayuki Inui, Tsuyoshi Oishi, Hiromitsu Nagayasu, Hiroshi Tanaka, Takuya Hirata, Tatsuya Tsujiuchi, Susumu Okino, Naoyuki Kamiyama, Seiji Yoshihara
  • Patent number: 8871165
    Abstract: A method for combustion of a fuel and treatment of the resulting flue gas includes: combusting a fuel to produce a hot flue gas stream containing at least carbon dioxide (CO2) and sulfur dioxide (SO2), bringing the flue gas stream into contact with solid calcium oxide (CaO) in a carbonation reactor operating at a temperature at which CO2 in the flue gas reacts with CaO to form solid calcium carbonate (CaCO3), heating CaCO3 in a calcination reactor operating at a temperature at which CaCO3 is converted to CaO and CO2, and recirculating CaO formed in the calcination reactor back to the carbonation reactor. Heating can be at least partially effected by indirect heat exchange with hot flue gas from the combustion. Flue gas used for the indirect heat exchange can be subsequently subjected to dry desulfurization before it is brought into contact with CaO in the carbonation reactor.
    Type: Grant
    Filed: October 16, 2013
    Date of Patent: October 28, 2014
    Assignee: ALSTOM Technology Ltd
    Inventors: Olaf Stallmann, Gerhard Heinz, Peter Ulrich Koss
  • Patent number: 8864875
    Abstract: An exhaust gas treatment system for an internal combustion engine is provided comprising an exhaust gas conduit, a particulate filter (“PF”) device, a hydrocarbon source and an electronic control module including operative logic which when implemented. The PF has a filter structure for removal of particulates in the exhaust gas and is selectively regenerated based on an amount of particulates trapped within the filter structure of the PF device. The control module is in communication with the internal combustion engine and the hydrocarbon source, and receives a regeneration signal indicating the amount of particulates trapped within the filter structure of the PF device. The electronic control module includes control logic for monitoring the internal combustion engine prior to a regeneration event. The electronic control module includes control logic for determining a plurality operating parameters of the internal combustion engine based on the monitoring.
    Type: Grant
    Filed: November 13, 2012
    Date of Patent: October 21, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Eugene V. Gonze, Michael J. Paratore, Jr., Julian C. Tan
  • Patent number: 8865098
    Abstract: In a method for removing a portion of contaminants, such as nitrogen oxides, from an exhaust gas stream of a combustion process, the exhaust gas stream is separated into two or more gas streams. At least one of the two or more gas streams is treated first by mixing with ozone. The treated gas stream is then fed to a scrubber where it is recombined with the untreated gas stream. Excess ozone present in the treated gas stream is consumed by oxidation of contaminants in the untreated gas stream before the combined gas stream is released to the atmosphere. The portion of the gas stream separated for mixing with ozone directly correlates to the amount of nitrogen oxides that are desired to be removed from the stream.
    Type: Grant
    Filed: October 15, 2013
    Date of Patent: October 21, 2014
    Assignee: Cannon Technology, Inc.
    Inventor: Naresh J. Suchak
  • Publication number: 20140308174
    Abstract: A catalytic combustor (2) for use in a gas turbine engine (GT) includes catalyst units (U1, U2, U3) in a multistage. The catalyst unit (U1, U2, U3) in each stage includes a support material (64) for supporting the respective catalyst unit (U1, U2, U3) against the pressure of a gas. The catalyst unit (U1, U2, U3) in each stage is unitized together with the support material (64) and the catalyst units (U1, U2, U3) are removably fitted to a combustor housing (50).
    Type: Application
    Filed: June 26, 2014
    Publication date: October 16, 2014
    Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Yasushi DOURA, Masahiro OGATA
  • Publication number: 20140308186
    Abstract: Some industrial or fabrication processes generate effluent gas streams that require scrubbing. Scrubbing may include the use of one or more gases to abate the effluents for safer release into the environment. Systems and methods described herein provide a liquid-enclosed reaction chamber where an extended reaction zone or more than one reaction zone is formed. By having an extended reaction zone or more than one reaction zone, the effluent gas stream and the products of upstream reaction zones can be more completely abated. The reaction zones are formed by adding one or more gas ports into the reaction chamber downstream of a main burner nozzle.
    Type: Application
    Filed: March 14, 2014
    Publication date: October 16, 2014
    Applicant: Airgard, Inc.
    Inventors: Daniel L. Messineo, Robert T. LoBianco, Mark W. Johnsgard
  • Publication number: 20140308184
    Abstract: A process exhaust waste gas abatement system in the form of a wrap around flame wall module or burner for effectively and efficiently abating a variety of different waste gas streams employing a variety of different fuel-oxidizers. The module includes a variable number of gas outlets provided around a central waste process gas conduit. The gas outlets may either be oriented in a parallel configuration or a converging configuration. The length of the nose piece on the module is between 0.125 and 4 inches to prevent build up of decomposition or oxidation products on the module.
    Type: Application
    Filed: April 10, 2013
    Publication date: October 16, 2014
    Applicant: HIGHVAC CORP
    Inventor: HIGHVAC CORP
  • Patent number: 8858905
    Abstract: A system and a process for capture and absorption of sulfur dioxide and carbon dioxide by an ammonia method at normal pressure are disclosed.
    Type: Grant
    Filed: February 10, 2012
    Date of Patent: October 14, 2014
    Assignee: Anhui Huaihua Co. Ltd.
    Inventors: Jingyao Xu, Lin Chen, Mingxu Zhang, Song Han, Chuanhao Su, Fanfel Min, Hanxu Li
  • Publication number: 20140301923
    Abstract: Described are SCR catalyst systems comprising a first SCR catalyst composition and a second SCR catalyst composition arranged in the system, the first SCR catalyst composition promoting higher N2 formation and lower N2O formation than the second SCR catalyst composition, and the second SCR catalyst composition having a different composition than the first SCR catalyst composition, the second SCR catalyst composition promoting lower N2 formation and higher N2O formation than the first SCR catalyst composition. The SCR catalyst systems are useful in methods and systems to catalyze the reduction of nitrogen oxides in the presence of a reductant.
    Type: Application
    Filed: March 13, 2014
    Publication date: October 9, 2014
    Applicant: BASF Corporation
    Inventors: Weiyong Tang, Jaya L. Mohanan
  • Patent number: 8852311
    Abstract: The present invention aims to provide a honeycomb structure capable of preventing a plugging failure and forming cracks by heat shock which are caused by a cell having a small cross-section.
    Type: Grant
    Filed: January 18, 2011
    Date of Patent: October 7, 2014
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Teruo Komori, Hajime Yoshino
  • Patent number: 8852518
    Abstract: The present invention is to provide a catalyst for removing nitrogen oxides which is capable of keeping sufficient denitrification performance, i.e., a high removal rate of nitrogen oxides in exhaust gas having a high NO2 content especially under conditions where the ratio of NO2/NO in exhaust gas is 1 or higher, a catalyst molded product therefor, and an exhaust gas treating method. The catalyst is designed for removing nitrogen oxides, which is used to denitrify exhaust gas containing nitrogen oxides having a high NO2 content, which comprises: at least one kind of oxide selected from the group consisting of copper oxides, chromium oxides, and iron oxides as a component for reducing NO2 to NO; and which further comprises: at least one kind of titanium oxide; at least one kind of tungsten oxide; and at least one kind of vanadium oxide as components for reducing NO to N2.
    Type: Grant
    Filed: May 8, 2008
    Date of Patent: October 7, 2014
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Shigeru Nojima, Kozo Iida, Yoshiaki Obayashi, Masashi Kiyosawa, Masanori Demoto
  • Patent number: 8845798
    Abstract: A particulate matter detecting apparatus for an internal combustion engine that can estimate a discharge amount of the particulate matter accurately. The particulate matter detecting apparatus for an internal combustion engine, comprises: a sensor disposed at an exhaust passage of the internal combustion engine, the sensor including a pair of electrodes for detecting particulate matter in an exhaust gas; means for estimating a discharge amount of the particulate matter based on an output of the sensor, and means for acquiring a predetermined parameter that serves as an index for a rate with which the particulate matter in the exhaust gas is deposited on the sensor. The discharge amount estimating means corrects an estimated value of the discharge amount of the particulate matter based on the parameter acquired by the parameter acquiring means.
    Type: Grant
    Filed: December 7, 2010
    Date of Patent: September 30, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Hiroki Nishijima
  • Patent number: 8845783
    Abstract: The present invention is intended to detect a failure of a PM filter with a higher degree of accuracy. The present invention is provided with: a PM trapping efficiency calculation part to calculate a PM trapping efficiency (which is a proportion of an amount of particulate matter trapped with respect to an amount of inflow particulate matter) based on an amount of inflow particulate matter obtained by an inflow particulate matter obtaining part, and an amount of outflow particulate matter detected by a PM sensor; and a failure detection part to make a determination that a failure has occurred in the PM filter, in cases where there has appeared a tendency for the PM trapping efficiency to decrease during a period of time until the execution of the following filter regeneration processing is started after the completion of execution of the filter regeneration processing.
    Type: Grant
    Filed: March 26, 2010
    Date of Patent: September 30, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kazuya Takaoka, Daisuke Shibata, Hiroshi Sawada, Toru Kidokoro
  • Publication number: 20140286831
    Abstract: In one embodiment, a system for treating a gas stream comprising NOx generated from an acid pickling solution includes a first chamber and a second chamber. The first chamber includes a first inlet communicating with a source of a gas comprising NOx, a second inlet communicating with a source of ozone, and an interior volume adapted to contact the gas comprising NOx introduced through the first inlet with the ozone introduced through the second inlet. The second chamber directly fluidly communicates with the first chamber and receives gaseous effluent comprising nitric acid from the first chamber. The second chamber includes a third inlet communicating with a source of water vapor, an interior volume adapted to contact the gaseous effluent from the first chamber with the water vapor, thereby solubilizing nitric acid in the gaseous effluent with the water vapor to provide a solubilized nitric acid, and an outlet for collecting solubilized nitric acid from the interior volume of the second chamber.
    Type: Application
    Filed: June 9, 2014
    Publication date: September 25, 2014
    Inventor: James A. Moore
  • Publication number: 20140271388
    Abstract: Optimized Cu—Mn spinel compositions, with optimal spinel phase formation and phase stability properties, for a plurality of ZPGM catalysts in underfloor and closed-loop coupled catalyst applications are disclosed. Plurality of Cu—Mn spinel compositions are prepared with variations of molar ratios. Effect of calcination temperature is analyzed to determine spinel phase formation and phase stability, as well as the effect of calcination temperature on lattice parameter of spinel, as correlated to spinel phase formation and phase stability of optimal Cu—Mn spinel compositions disclosed. Disclosed Cu—Mn spinels with enhanced spinel phase formation and phase stability may be suitable for ZPGM catalyst systems used in a vast number of TWC applications.
    Type: Application
    Filed: December 5, 2013
    Publication date: September 18, 2014
    Applicant: CDTI
    Inventors: Zahra Nazarpoor, Stephen J. Golden
  • Publication number: 20140260213
    Abstract: A catalyst system may include a three-way catalyst that may receive exhaust gases from an engine and convert the exhaust gases to first converted exhaust gases. An ammonia slip catalyst may receive the first converted exhaust gases and convert the first converted exhaust gases to second converted exhaust gases. A hydrocarbon oxidation catalyst may receive the second converted exhaust gases and convert the second converted exhaust gases to third converted exhaust gases.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Applicant: General Electric Company
    Inventor: Maruthi N. Devarakonda
  • Publication number: 20140271422
    Abstract: Described are SCR catalyst systems comprising a first SCR catalyst composition and a second SCR catalyst composition arranged in the system, the first SCR catalyst composition promoting higher N2 formation and lower N2O formation than the second SCR catalyst composition, and the second SCR catalyst composition having a different composition than the first SCR catalyst composition, the second SCR catalyst composition promoting lower N2 formation and higher N2O formation than the first SCR catalyst composition. The SCR catalyst systems are useful in methods and systems to catalyze the reduction of nitrogen oxides in the presence of a reductant.
    Type: Application
    Filed: March 13, 2014
    Publication date: September 18, 2014
    Applicant: BASF Corporation
    Inventor: Weiyong Tang
  • Publication number: 20140271386
    Abstract: An exhaust treatment component mounting system including an exhaust treatment component canister that includes a cleat ring, and an exhaust treatment component housing including a radially outwardly extending flange. A torsion rod including a first end that mates with the flange of the housing, and a second end including a coupling that mates with the cleat ring, wherein during connection between the first end and the second end of the torsion rod, the canister is rigidly secured to the housing.
    Type: Application
    Filed: March 12, 2013
    Publication date: September 18, 2014
    Applicant: TENNECO AUTOMOTIVE OPERATING COMPANY INC.
    Inventor: John Stanavich
  • Publication number: 20140271387
    Abstract: It is an object of the present disclosure, to provide an optimized catalyst composition with variations of Cu and Mn molar ratio, which may include a formulation CuxMn3-xO4 spinel, with a plurality of molar ratio variations for selecting the optimal Cu—Mn molar ratio for TWC application. The formulation may include a support oxide, such as Nb2O5—ZrO2. Employing this optimized Cu and Mn ratio in spinel as overcoat may achieve optimal NO conversion, high catalyst activity, and enhanced thermal stability, having a chemical composition substantially free from PGM and rare earth metals. According to principles of the present disclosure, the disclosed Cu—Mn spinel on Nb—Zr support oxide for TWC applications may require a washcoat of alumina, and overcoat of Cu—Mn spinel on Nb—Zr support oxide.
    Type: Application
    Filed: December 5, 2013
    Publication date: September 18, 2014
    Applicant: CDTi
    Inventor: Zahra Nazarpoor
  • Publication number: 20140260471
    Abstract: A method and apparatus for cleaning carbon oxides, sulfur oxides and nitrogen oxides, from stack gas, from combustion of coal, combustion of natural gas or propane, or from a cement kiln by reaction using calcium zeolite and sodium zeolite catalysts. The method also includes cleaning the catalytic beds with nitrogen to remove the collected reactants and recover a fertilizer product and the catalysts for reusable.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Applicant: THREE D STACK, LLC
    Inventor: James Gary DAVIDSON
  • Patent number: 8834801
    Abstract: A vertical downflow type flue gas denitrification apparatus which has a plurality of catalyst blocks, each incorporating a catalyst unit provided therein, is provided with a first ash accumulation baffle plate and a second ash accumulation baffle plate which are slidable into a gap between catalyst blocks adjacent to each other, and processes an exhaust gas emitted from a combustor and turned to a vertical downflow. The denitrification apparatus has a simple configuration where the ash accumulation baffle plates prevent ash or the like from being accumulated in the gap between the catalyst blocks. The thermal expansion of the ash accumulation baffle plate can be absorbed even under the operating conditions which produce a change in temperature, and charging and replacing the catalyst in the catalyst blocks are possible without on-site welding of the ash accumulation baffle plates.
    Type: Grant
    Filed: July 5, 2011
    Date of Patent: September 16, 2014
    Assignee: Babcock-Hitachi Kabushiki Kaisha
    Inventors: Tomokazu Harada, Satoru Shishido, Toru Ogasahara
  • Publication number: 20140255289
    Abstract: The present invention is a combustion system employing a urea-to-ammonia vapor reactor system. The urea-to-ammonia reactor housing enclosed in a bypass flow duct that receives a secondary flue gas stream at a split point from a main flue gas stream containing nitrogen oxides (NOx) emanating from a boiler. The bypass flow duct allows the secondary flue gas stream to flow past the enclosed reactor housing where injected aqueous urea in atomized or non-atomized form, is gasified to ammonia vapor. The resulting gaseous mixtures of ammonia, its by-products and the secondary flue gas stream subsequently rejoin the main stream, before the main flue gases are treated through a Selective Catalytic Reduction (SCR) reactor apparatus. A residence time of the secondary stream within the bypass flow duct, which may be increased by a recirculation loop, enables effective conversion of urea to ammonia to be used in the SCR apparatus.
    Type: Application
    Filed: November 5, 2010
    Publication date: September 11, 2014
    Applicant: JOHNSON MATTHEY INC.
    Inventor: Yul Kwan
  • Publication number: 20140255262
    Abstract: Catalyst washcoats with improved porosity and methods for making the washcoats are provided. The process comprises incorporation of an oil-in-water macroemulsion into the catalyst slurry prior to washcoating the carrier substrate, and calcining the washcoated carrier substrate to remove the oil-in-water macroemulsion. Also provided are catalyst articles comprising the washcoat and methods for abatement of exhaust gas emissions.
    Type: Application
    Filed: March 6, 2013
    Publication date: September 11, 2014
    Applicant: BASF Corporation
    Inventors: Xinsheng Liu, Esra Cinar, Chunjuan Zhang, Pascaline Harrison Tran
  • Publication number: 20140255258
    Abstract: The exhaust line for a heat engine comprises, between an exhaust inlet and an exhaust outlet, a nitrogen oxide trap which is fitted on a filtering portion. It comprises, between the nitrogen oxide trap and the exhaust inlet, a branching portion which is capable of branching the exhaust gases away from the nitrogen oxide trap and switching means for the exhaust gases in order to cause them to flow through the filtering portion or branching portion.
    Type: Application
    Filed: May 19, 2014
    Publication date: September 11, 2014
    Applicant: Faurecia Systemes D'Echappement
    Inventor: Stephane Londos
  • Publication number: 20140255281
    Abstract: A hydrocarbon selective catalytic reduction (HC-SCR) catalyst is regenerated using a nitrogen-based reductant agent. The HC-SCR catalyst is in communication with a power system such as an internal combustion engine and receives exhaust gasses from the internal combustion engine. Sulfur in the exhaust gasses may deactivate the HC-SCR catalyst by sulfur oxides forming thereon. To remove the sulfur oxides, a nitrogen-based reductant agent is introduced to the exhaust gasses. The nitrogen-based reductant agent decomposes to nitrogen oxides and hydrogen. The hydrogen reacts with the sulfur oxides to form hydrogen sulfides thereby removing the sulfur oxides from the HC-SCR catalyst.
    Type: Application
    Filed: May 20, 2014
    Publication date: September 11, 2014
    Applicant: Caterpillar Inc.
    Inventor: Praveen S. Chavannavar
  • Publication number: 20140248188
    Abstract: A plasma generation device 20 includes a passage formation member 41 arranged upstream of a purification catalyst 31 in an exhaust passage 30 and formed with an internal passage 40 that the exhaust gas passes through, and a plasma generation part 29 that generates plasma in the internal passage 40. The internal passage 40 is located in the vicinity of or abutting contact with a purification catalyst 31 at an outlet part of the internal passage so that the exhaust gas flowing through the internal passage 40 causes the plasma generated by the plasma generation part 29 to blow out from an outlet 43 of the internal passage 40 and to reach the purification catalyst.
    Type: Application
    Filed: June 28, 2012
    Publication date: September 4, 2014
    Applicant: IMAGINEERING, INC.
    Inventor: Yuji Ikeda
  • Publication number: 20140248201
    Abstract: The present invention relates to a method for removal of SO2 from exhaust gas from a marine engine or a marine boiler of a ship. The exhaust gas from said marine engine or marine boiler is cooled and washed with seawater in a first scrubber section, and subsequently, in a second scrubber section, washed with circulating freshwater with an addition of an alkaline chemical. The circulating freshwater used for washing is warmer than the seawater used for cooling in the first scrubber section. The warmer freshwater is indirectly heat exchanged with cold seawater. The exhaust gas washed in the first scrubber section is passed via a demister unit before it is washed with circulating freshwater in the second scrubber section. The invention further relates to a corresponding scrubber system.
    Type: Application
    Filed: September 12, 2012
    Publication date: September 4, 2014
    Applicant: ALFA LAVAL CORPORATE AB
    Inventor: Jens Peter Hansen
  • Patent number: 8821609
    Abstract: A ceramic honeycomb filter comprising a ceramic honeycomb structure having large numbers of flow paths partitioned by porous cell walls, and plugs disposed in the flow paths alternately on the exhaust gas inlet or outlet side, to remove particulate matter from an exhaust gas passing through the porous cell walls; the porous cell walls having porosity of 45-75%, the median pore diameter A (?m) of the cell walls measured by mercury porosimetry, and the median pore diameter B (?m) of the cell walls measured by a bubble point method meeting the formula of 35<(A?B)/B×100?70, and the maximum pore diameter of the cell walls measured by a bubble point method being 100 ?m or less.
    Type: Grant
    Filed: March 30, 2011
    Date of Patent: September 2, 2014
    Assignee: Hitachi Metals, Ltd.
    Inventors: Shunji Okazaki, Toshitaka Ishizawa