Utilizing Solid Sorbent, Catalyst, Or Reactant Patents (Class 423/239.1)
  • Patent number: 11149606
    Abstract: An exhaust system (1) of an internal combustion engine, prior to a first heating-up of the exhaust system (1), has a particle filter (2) and an exhaust line (3) upstream of the particle filter (2). The exhaust system (1) has a carrier element (11) with ash-forming components or ash applied thereto. The carrier element (11) may be on a side of the particle filter (2) facing toward the exhaust line (3). Alternatively, the exhaust system (1) may have a catalytic converter (4) upstream of the particle filter (2), the carrier element (11) that with the ash-forming components or the ash may be applied to the catalytic converter (4).
    Type: Grant
    Filed: June 17, 2019
    Date of Patent: October 19, 2021
    Assignees: Dr. Ing. h.c. F. Porsche Aktiengesellschaft, Illinois Tool Works Inc.
    Inventors: Michael Wessels, Ingo de Wilde
  • Patent number: 11141713
    Abstract: In order to provide an exhaust gas purification catalyst capable of purifying hydrocarbons, carbon monoxide, and nitrogen oxides in exhaust gas at low temperatures, the exhaust gas purification catalyst according to the present invention includes: a region (2) containing palladium on a three-dimensional structure (1), and a first region (3) and a second region (4) provided on the region (2) in order from an inflow side of exhaust gas to an outflow side of exhaust gas. The concentration of rhodium contained in the first region (3) is higher than the concentration of rhodium contained in the second region (4).
    Type: Grant
    Filed: April 26, 2018
    Date of Patent: October 12, 2021
    Assignee: UMICORE SHOKUBAI JAPAN CO., LTD.
    Inventors: Hirotaka Kuno, Takahiro Ikegami, Kosuke Mikita, Masashi Nakashima, Shigekazu Minami, Masanori Ikeda
  • Patent number: 11073061
    Abstract: Methods and systems are provided for a multicomponent aftertreatment device arranged in a vehicle exhaust gas passage. In one example, a system may include an oxygen storage catalyst and an underbody trap catalyst comprising metal modified zeolite, the oxygen storage catalyst arranged upstream of the underbody trap catalyst in an exhaust passage of the vehicle.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: July 27, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Gang Guo, Jason Lupescu, Giovanni Cavataio, Eva Thanasiu, Hungwen Jen, Jeffrey Scott Hepburn
  • Patent number: 11027265
    Abstract: A copper-CHA zeolite catalyst for SCR of NOx is disclosed.
    Type: Grant
    Filed: December 6, 2019
    Date of Patent: June 8, 2021
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Alejandra Rivas-Cardona, Joseph Michael Fedeyko, Hai-Ying Chen
  • Patent number: 11008916
    Abstract: In an exhaust system for a motor vehicle having an exhaust treatment device for after-treating exhaust gas of a combustion engine of the motor vehicle, the exhaust gas treatment device includes a first SCR catalyst, which has a zeolite material containing copper, an ammonia slip catalyst, which is arranged downstream of the first SCR catalyst, and a particulate filter. A second SCR catalyst, which has an SCR catalyst material containing vanadium, is arranged upstream of the first SCR catalyst.
    Type: Grant
    Filed: June 12, 2018
    Date of Patent: May 18, 2021
    Assignee: Daimler AG
    Inventors: Johannes Bleckmann, Claudia Essmann, Uwe Gaertner, Alexander Massner, Michael Stiller
  • Patent number: 10994263
    Abstract: A polymer-catalyst assembly includes polarized polymeric nanofibers retaining a plurality of catalytic metallic nanoparticles. A method of making the polarized polymer-catalyst assembly may include providing a fiber mat having polymeric nanofibers retaining a plurality of catalytic metallic nanoparticles, stretching the fiber mat in a uniaxial direction, simultaneous with the step of stretching, thermally heating the fiber mat, simultaneous with the steps of stretching and thermally heating, subjecting the fiber mat to an electric field, whereby the simultaneous steps of stretching, thermally heating, and subjecting thereby form a polarized fiber mat.
    Type: Grant
    Filed: September 13, 2018
    Date of Patent: May 4, 2021
    Assignee: The University of Akron
    Inventors: George Chase, Dinesh Lolla, Ahmed Abutaleb
  • Patent number: 10988380
    Abstract: Disclosed is a dual pressure plant for the production of nitric acid on the basis of the oxidation of ammonia. The plant comprises a reactor configured to produce a burner gas stream; a gas cooling section configured to form a cooled burner gas; a condensation section configured to form an aqueous nitric acid condensate and an uncondensed nitrogen oxides gas stream; an absorption section configured to produce raw nitric acid and a tail gas; and a tail gas treatment system configured to form a purified tail gas. In a tail gas heating section a further heat exchanger configured to receive heat from the burner gas stream, said further heat exchanger being positioned relatively close to the reactor.
    Type: Grant
    Filed: December 31, 2019
    Date of Patent: April 27, 2021
    Assignee: Stamicarbon B.V.
    Inventors: Leonardus Hubertus Postma, Maria Paz Muñoz López, Martinus Voorwinden
  • Patent number: 10989090
    Abstract: An aftertreatment system includes an exhaust reductant tank configured to store an exhaust reductant. A filter is fluidically coupled to the exhaust reductant tank. The aftertreatment system includes a hydrocarbon detection device configured to indicate the presence of a hydrocarbon in the exhaust reductant. A catalyst is included in the system and configured to treat the exhaust reductant flowing through the system. The hydrocarbon detection device can include a hydrophobic paper, and can be disposed in the filter.
    Type: Grant
    Filed: April 10, 2020
    Date of Patent: April 27, 2021
    Assignee: Cummins Emission Solutions, Inc.
    Inventor: Kevin Gudorf
  • Patent number: 10946335
    Abstract: A NOx and SOx oxidation with atmospheric oxygen to remove NOx and SOx from flue gases. The combined system for catalytic oxidation and wet-scrubbing of NOx and SOx from a flue gas and manufacturing fertilizers includes: an air separation unit for separating atmospheric oxygen from air and producing an air stream enriched with atmospheric oxygen, an adsorption and oxidation reactor containing an oxidation catalyst and carrying out the catalytic oxidation of NOx and SOx by said oxygen to yield nitric and sulphuric acids, a separator and reactor control unit for separation of products and liquids and controlling the reaction; and a vessel containing ammonia streaming said ammonia into the reactor or into the control unit to react with the nitric and sulphuric acids and to yield the fertilizers.
    Type: Grant
    Filed: July 18, 2018
    Date of Patent: March 16, 2021
    Assignee: ARIEL SCIENTIFIC INNOVATIONS LTD.
    Inventors: Gad A. Pinhasi, Tomer Zidki, Haim Cohen
  • Patent number: 10907511
    Abstract: An embodiment includes a power production system having a compressor system compressing a fluid. The system further includes a combustor system combusting compressed fluid and a fuel. The system additionally includes a turbine system configured produce power and an exhaust stream and a first exhaust processing system fluidly coupled to the turbine system and configured to receive the exhaust stream. The system also includes a first bleed system fluidly coupled to a first location in the compressor system, to a second location downstream of the compressor system and upstream of the first exhaust processing system, to a third location in the first exhaust processing system, to a fourth location downstream of the first exhaust processing system, or a combination thereof, and configured to redirect a first compressor extraction from the first location to the second location, to the third location, to the fourth location, or to the combination thereof.
    Type: Grant
    Filed: September 20, 2016
    Date of Patent: February 2, 2021
    Assignee: General Electric Company
    Inventors: Edward Michael Yanosik, Daniel Aaron Kessler
  • Patent number: 10890093
    Abstract: Exhaust gas treatment system (100) for a motor vehicle, comprising a first catalytic converter (101-1) for selective catalytic reduction; a second catalytic converter (101-2) for selective catalytic reduction; a first nitrogen oxide sensor (103-1) upstream of the first catalytic converter (101-1) for detecting a first nitrogen oxide value (NOx-1); a second nitrogen oxide sensor (103-2) between the first and the second catalytic converter (101-1; 101-2) for detecting a second nitrogen oxide value (NOx-2); a third nitrogen oxide sensor (103-3) downstream of the second catalytic converter (101-2) for detecting a third nitrogen oxide value (NOx-3); an electronic evaluation device (105) for calculating a first efficiency of the first catalytic converter (101-1) on the basis of the first and the second nitrogen oxide value (NOx-1; NOx-2), a second efficiency of the second catalytic converter (101-2) on the basis of the second and the third nitrogen oxide value (NOx-2; NOx-3) and a total efficiency of the exhaust ga
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: January 12, 2021
    Assignee: FEV Europe GmbH
    Inventors: Arun Palaniappan Muthukaruppan, Henning Gero Petry
  • Patent number: 10874998
    Abstract: The diffusing member of the present invention is disposed in an exhaust pipe to partially block exhaust gas flowing in from upstream of the exhaust pipe, the diffusing member including a ceramic member and a metal member, wherein the ceramic member surrounds the metal member in such a manner that the metal member is partially exposed, and the volume of the ceramic member constituting the diffusing member is larger than the volume of the metal member constituting the diffusing member.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: December 29, 2020
    Assignee: IBIDEN CO., LTD.
    Inventors: Satoru Kariya, Fumiyuki Mutsuda, Tomoyoshi Nakamura, Yuya Sugiura, Yasutaka Ito
  • Patent number: 10857518
    Abstract: Dry-scrubbing media compositions, methods of preparation and methods of use are provided. The compositions contain activated alumina and magnesium oxide. Optionally, activated carbon and other impregnates, such as hydroxides of group 1A metals, are included. The compositions exhibit improved efficiency and capacity for the removal of compounds, such as hydrogen sulfide, from an air-stream. The compositions are particularly useful for reducing or preventing the release of toxic gaseous compounds from the areas such as landfills, petroleum storage areas, refineries, drinking water systems, sewage treatment facilities, swimming pools, hospital morgues, animal rooms, and pulp and paper production sites.
    Type: Grant
    Filed: February 25, 2015
    Date of Patent: December 8, 2020
    Assignee: PURAFIL, INC.
    Inventor: William G. England
  • Patent number: 10821400
    Abstract: A method for removing NOx from flue gas by SCR includes supplying a reagent for the SCR reaction of NOx into the flue gas, then contacting the flue gas with a catalyst. Supplying the reagent includes supplying a less than stoichiometric amount of reagent, and after contacting the flue gas with a catalyst a final NOx removal step is provided.
    Type: Grant
    Filed: July 30, 2015
    Date of Patent: November 3, 2020
    Assignee: GENERAL ELECTRIC TECHNOLOGY GMBH
    Inventors: Olaf Stallmann, Wuyin Wang, Jean-Marc Gilbert Amann, Frank Klaus Ennenbach
  • Patent number: 10807082
    Abstract: Provided is catalyst material useful for the selective catalytic reduction of NOx in lean burn exhaust gas, wherein the catalyst material is a hydrothermally stable, low SAR aluminosilicate zeolite loaded with a synergistic combination of one or more transition metals, such as copper, and one or more alkali or alkaline earth metals, such as calcium or potassium.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: October 20, 2020
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Joseph Michael Fedeyko, Hai-Ying Chen
  • Patent number: 10786808
    Abstract: Described is a selective catalytic reduction material comprising a spherical particle including an agglomeration of crystals of a molecular sieve. The catalyst is a crystalline material that is effective to catalyze the selective catalytic reduction of nitrogen oxides in the presence of a reductant at temperatures between 200° C. and 600° C. A method for selectively reducing nitrogen oxides and an exhaust gas treatment system are also described.
    Type: Grant
    Filed: August 23, 2017
    Date of Patent: September 29, 2020
    Assignee: BASF Corporation
    Inventors: Natalia Trukhan, Ulrich Müller, Michael Breen, Barbara Slawski, Qi Fu, Jaya L. Mohanan, Martin W. Kraus, Ahmad Moini, Xiaofan Yang, John K. Hochmuth
  • Patent number: 10780426
    Abstract: Use of a ternary vanadate of formula (I): Fex MeIy MeIIz VO4 wherein MeI and MeII are different from each other and each stand for an element selected from the group consisting of Y, La, Ce, Pr, Nd, Sm, Er, Gd, Tb, Dy, Ho, Tm, Yb, Lu, Al, Bi and Sb and wherein x=0.05-0.9; y=0.05-0.9; z=0.05-0.9; x+y+z=1, as a catalyst for the oxidation of carbonaceous compounds in combustion engines.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: September 22, 2020
    Assignee: TREIBACHER INDUSTRIE AG
    Inventors: Karl Schermanz, Lars Hensgen, Amod Sagar, Alessandro Trovarelli, Marzia Casanova
  • Patent number: 10731095
    Abstract: A flue gas additive is provided that includes both a nitrogenous component to reduce gas phase nitrogen oxides and a halogen-containing component to oxidize gas phase elemental mercury.
    Type: Grant
    Filed: October 1, 2019
    Date of Patent: August 4, 2020
    Assignee: ADA-ES, Inc.
    Inventors: Constance Senior, Gregory M. Filippelli, Cynthia Jean Bustard, Michael D. Durham, William J. Morris, Sharon M. Sjostrom
  • Patent number: 10655522
    Abstract: An aftertreatment system includes an exhaust reductant tank configured to store an exhaust reductant. A filter is fluidically coupled to the exhaust reductant tank. The aftertreatment system includes a hydrocarbon detection device configured to indicate the presence of a hydrocarbon in the exhaust reductant. A catalyst is included in the system and configured to treat the exhaust reductant flowing through the system. The hydrocarbon detection device can include a hydrophobic paper, and can be disposed in the filter.
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: May 19, 2020
    Assignee: CUMMINS EMISSION SOLUTIONS, INC.
    Inventor: Kevin Gudorf
  • Patent number: 10654031
    Abstract: Zeolite catalysts and systems and methods for preparing and using zeolite catalysts having the CHA crystal structure are disclosed. The catalysts can be used to remove nitrogen oxides from a gaseous medium across a broad temperature range and exhibit hydrothermal stable at high reaction temperatures. The zeolite catalysts include a zeolite carrier having a silica to alumina ratio from about 15:1 to about 256:1 and a copper to alumina ratio from about 0.25:1 to about 1:1.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: May 19, 2020
    Assignee: BASF Corporation
    Inventors: Ivor Bull, Wen-Mei Xue, Patrick Burk, R. Samuel Boorse, William M. Jaglowski, Gerald Stephen Koermer, Ahmad Moini, Joseph A. Patchett, Joseph C. Dettling, Matthew Tyler Caudle
  • Patent number: 10584654
    Abstract: A fuel reforming system may include an engine combusting reformed gas to generate mechanical power; an intake line connected to the engine to supply reformed gas and air to the engine; an exhaust line connected to the engine to circulate exhaust gas exhausted from the engine; a fuel reformer provided at an exhaust gas recirculation (EGR) line diverging from the exhaust line, mixing the EGR gas passing through the EGR line with the fuel and reforming the fuel mixed in the EGR gas; and an EGR flow controller determining a target opening degree of a flow rate control valve according to engine running condition, whether or not in a reforming running condition, required amount of EGR gas along to running condition, and controlling opening degree of the flow rate control valve on a basis of the target opening degree.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: March 10, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Hong Kil Baek, Seung Woo Lee, Tae Won Lee
  • Patent number: 10577999
    Abstract: System for the removal of noxious compounds and particulate matter from exhaust gas of a compression ignition engine comprising a three way catalyst unit having an NH3-SCR activity, an ammonia oxidation activity and an adsorption activity of volatile vanadium and tungsten compounds volatilized off an upstream SCR active catalyst.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: March 3, 2020
    Assignee: UMICORE AG & CO. KG
    Inventors: Keld Johansen, Ton V. W. Janssens
  • Patent number: 10570802
    Abstract: System for the removal of noxious compounds and particulate matter from exhaust gas of a compression ignition engine comprising a three way catalyst unit having an NH3-SCR activity, an ammonia oxidation activity and an adsorption activity of volatile vanadium and tungsten compounds volatilized off an upstream SCR active catalyst.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: February 25, 2020
    Assignee: UMICORE AG & CO. KG
    Inventors: Keld Johansen, Ton V. W. Janssens
  • Patent number: 10549236
    Abstract: Systems and methods use oxygen uncoupling metal oxide material for decomposition of NOx. A gaseous input stream comprising NOx is contacted with a metal oxide particle, generating nitrogen (N2) gas and an oxidized metal oxide particle. After contacting the first gaseous input stream with the metal oxide particle, a first gaseous product stream is collected. The first gaseous product stream includes substantially no NOx. A second gaseous input stream comprising at least one sweeping gas is also contacted with the oxidized metal oxide particle. After contacting the oxidized metal oxide particle, the sweeping gas includes oxygen (O2) and a reduced metal oxide particle is generated. Then a second gaseous product stream is collected, where the second gaseous product stream includes oxygen (O2) gas.
    Type: Grant
    Filed: January 29, 2019
    Date of Patent: February 4, 2020
    Assignee: OHIO STATE INNOVATION FOUNDATION
    Inventors: Liang-Shih Fan, Deven Swapneshu Baser, Peter Sandvik, Mandar Kathe, Charles Fryer
  • Patent number: 10512905
    Abstract: A copper-CHA zeolite catalyst for SCR of NOx is disclosed.
    Type: Grant
    Filed: December 3, 2014
    Date of Patent: December 24, 2019
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Alejandra Rivas-Cardona, Joseph Michael Fedeyko, Hai-Ying Chen
  • Patent number: 10486105
    Abstract: A flow-through solid catalyst formed by coating a zeolite material on a metal or ceramic solid substrate. In some embodiments, the solid substrate is formed as flat plates, corrugated plates, or honeycomb blocks.
    Type: Grant
    Filed: November 12, 2018
    Date of Patent: November 26, 2019
    Assignee: 3D Clean Coal Emissions Stack, LLC
    Inventors: James Gary Davidson, Dave Hendrickson
  • Patent number: 10434456
    Abstract: A process for altering the composition of a feed gas containing H2S equivalents is disclosed. The process comprises (a) contacting the feed gas with a solid adsorbent at a temperature of 250-500° C., to obtain a loaded adsorbent, (b) purging the loaded adsorbent with a purge gas comprising steam, thus producing a product stream which typically contains substantially equal levels of CO2 and H2S. The process further comprises a step (c) of regenerating the purged adsorbent by removal of water. The adsorbent comprises alumina and one or more alkali metals, such as potassium oxides, hydroxide or the like.
    Type: Grant
    Filed: November 10, 2015
    Date of Patent: October 8, 2019
    Assignee: STICHTING ENERGIEONDERZOEK CENTRUM NEDERLAND
    Inventors: Hendricus Adrianus Johannes Van Dijk, Paul Dean Cobden, Stéphane Walspurger
  • Patent number: 10385750
    Abstract: There is provided a catalyst that exhibits a high denitration efficiency at a relatively low temperature and does not cause oxidation of SO2 in a selective catalytic reduction reaction that uses ammonia as a reducing agent. A denitration catalyst molded in a block shape contains 43 wt % or more of vanadium pentoxide. The denitration catalyst has a BET specific surface area of 30 m2/g or more and is used for denitration at 200° C. or lower.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: August 20, 2019
    Assignees: The Chugoku Electric Power Co., Inc., Tokyo Metropolitan University
    Inventors: Eiji Kiyonaga, Kenji Hikino, Keiichiro Morita, Masatake Haruta, Toru Murayama, Makoto Mino
  • Patent number: 10369547
    Abstract: The composition of the invention is based on oxides of cerium, of zirconium and of at least one rare earth metal other than cerium, with a cerium oxide content of greater than 50% by weight and it has, after calcination at 1000° C. for 4 hours, a specific surface area of at least 20 m2/g and an amount of mobile oxygen between 200° C. and 400° C. of at least 0.8 ml O2/g. It is prepared by a process in which, in a reactor, a mixture of compounds of cerium, of zirconium and of the other rare earth metal is reacted continuously with a basic compound with a residence time of the reaction medium in the mixing zone of the reactor of at most 100 milliseconds; the precipitate is heated then brought into contact with a surfactant before being calcined.
    Type: Grant
    Filed: June 13, 2012
    Date of Patent: August 6, 2019
    Assignee: RHODIA OPERATIONS
    Inventors: Simon Ifrah, Emmanuel Rohart, Julien Hernandez, Dominique Horbez, Lama Itani
  • Patent number: 10344649
    Abstract: An aftertreatment system includes an exhaust reductant tank configured to store an exhaust reductant. A filter is fluidically coupled to the exhaust reductant tank. The aftertreatment system includes a hydrocarbon detection device configured to indicate the presence of a hydrocarbon in the exhaust reductant. A catalyst is included in the system and configured to treat the exhaust reductant flowing through the system. The hydrocarbon detection device can include a hydrophobic paper, and can be disposed in the filter.
    Type: Grant
    Filed: November 10, 2014
    Date of Patent: July 9, 2019
    Assignee: Cummins Emission Solutions, Inc.
    Inventor: Kevin Gudorf
  • Patent number: 10280085
    Abstract: A process for preparing nitric acid may involve vaporizing ammonia in at least one first ammonia vaporizer to produce an ammonia gas, oxidizing this ammonia gas to nitrogen dioxide in a plant section of a nitric acid plant, and absorbing the nitrogen dioxide in water to produce nitric acid. A residual gas containing nitrous gases may be taken off from the plant section of the nitric acid plant and conveyed to a residual-gas cleaning apparatus. The residual gas containing nitrous gases may be reduced by means of ammonia in the residual-gas cleaning apparatus, wherein ammonia-containing wastewater obtained in the at least one first ammonia vaporizer may be conveyed to the residual-gas cleaning apparatus. Such a process may eliminate or at least substantially reduce ammonia-containing wastewater. Furthermore, a plant can be used in this process for preparing nitric acid.
    Type: Grant
    Filed: October 12, 2017
    Date of Patent: May 7, 2019
    Assignees: THYSSENKRUPP INDUSTRIAL SOLUTION AG, THYSSENKRUPP AG
    Inventor: Daniel Birke
  • Patent number: 10279312
    Abstract: Removing waste gas, more particularly carbon dioxide, from a gaseous medium and producing gaseous oxygen, a recovered waste constituent, more particularly solid carbon, heat and electrical power, by means of chemical reaction of waste gas with a metal oxide, more particularly dodecatungstophosphoric acid, immobilized in a porous matrix, more particularly tetraethylorthosilicate sol gel, enclosed in a gas permeable membrane. Regeneration of the metal oxide, more particularly by heating, and reconstitution of the porous matrix containing same by periodic introduction of base materials, and in some cases with externally supplied energy.
    Type: Grant
    Filed: March 6, 2016
    Date of Patent: May 7, 2019
    Inventor: Angelo Karavolos
  • Patent number: 10273851
    Abstract: An exhaust treatment system comprising: a first oxidation catalyst to oxidize nitrogen- and/or hydrocarbon compounds in an exhaust stream; a first dosage device downstream of said first oxidation catalyst to supply a first additive into said exhaust stream; a first reduction catalyst device, arranged downstream of said first dosage device, including a slip-catalyst primarily for reduction of nitrogen oxides (NOx), and secondarily for oxidation of additive; a second oxidation catalyst arranged downstream of said first reduction catalyst; a particulate filter arranged downstream of said oxidation catalyst; a second dosage device, arranged downstream of said particulate filter to supply a second additive into said exhaust stream; and a second reduction catalyst device, arranged downstream of said second dosage device for reduction of nitrogen oxides in said exhaust stream, with the use of at least one of said first and said second additive.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: April 30, 2019
    Assignee: Scania CV AB
    Inventors: Magnus Nilsson, Henrik Birgersson
  • Patent number: 10273852
    Abstract: An exhaust treatment system comprising: a first dosage device to supply a first additive into an exhaust stream; a first reduction catalyst device downstream of said first dosage device, including a slip-catalyst primarily for reduction of nitrogen oxides (NOx) through the use of the additive, and secondarily for oxidation of additive; an oxidation catalyst downstream of said first reduction catalyst device; a particulate filter downstream of said oxidation catalyst; a second dosage device downstream of said particulate filter to supply a second additive into said exhaust stream; a second reduction catalyst device downstream of said second dosage device for a reduction of nitrogen oxides in said exhaust stream using at least one of said first and said second additive.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: April 30, 2019
    Assignee: Scania CV AB
    Inventors: Magnus Nilsson, Henrik Birgersson
  • Patent number: 10267197
    Abstract: An exhaust treatment system comprising a first oxidation catalyst to oxidize nitrogen and/or carbon compounds in an exhaust stream and a first dosage device downstream of said first oxidation catalyst to supply a first additive. A first reduction catalyst device is arranged downstream of said first dosage device for reduction of nitrogen oxides using said first additive, and for the generation of heat, through at least one exothermal reaction with said exhaust stream. A particulate filter arranged downstream of said first reduction catalyst device to catch soot particles and a second dosage device, arranged downstream of said particulate filter to supply a second additive. A second reduction catalyst device is arranged downstream of said second dosage device for reduction of nitrogen oxides in said exhaust stream, through the use of at least one of said first and said second additive.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: April 23, 2019
    Assignee: Scania CV AB
    Inventors: Magnus Nilsson, Henrik Birgersson
  • Patent number: 10267198
    Abstract: A method and an exhaust treatment system are provided for treatment of an exhaust stream that comprises nitrogen oxides NOx. The method comprises using a first slip-catalyst SC1, arranged at a first device to create a first impact on a first amount of nitrogen oxides NOx_1 An NOx-storing catalyst may store nitrogen oxides NOx. The first slip-catalyst SC1 may reduce nitrogen oxides NOx, and/or oxidize potential additive in the exhaust stream. This first impact is actively controlled, based on the first amount of nitrogen oxides NOx_1 reaching the first device. The method also comprises a second impact on a second amount of nitrogen oxides NOx_2 reaching a second device. The active control of the first impact may be by active control of the dosage of additive at the first device, and/or through an active control of an exhaust environment, for example, a temperature for the exhaust stream.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: April 23, 2019
    Assignee: Scania CV AB
    Inventors: Magnus Nilsson, Henrik Birgersson
  • Patent number: 10260391
    Abstract: An exhaust treatment system is provided for treatment of an exhaust stream, where the system comprises a first dosage device, arranged to supply a first additive into said exhaust stream and a first reduction catalyst device, arranged downstream for reduction of nitrogen oxides in said exhaust stream through the use of said first additive, and for the generation of heat through at least one exothermal reaction with said exhaust stream. A particulate filter arranged downstream of said first reduction catalyst device to catch soot particles. A second dosage device arranged downstream of said particulate filter to supply a second additive into said exhaust stream and a second reduction catalyst device, arranged downstream of said second dosage device for reduction of nitrogen oxides in said exhaust stream through the use of at least one of said first and said second additive.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: April 16, 2019
    Assignee: Scania CV AB
    Inventors: Magnus Nilsson, Henrik Birgersson
  • Patent number: 10260395
    Abstract: A nitrous oxide (N2O) removal catalyst composite is described, which includes: a N2O removal catalytic material on a carrier, wherein the catalytic material comprises a platinum group metal (PGM) component on a ceria-containing support having a single phase, cubic fluorite crystal structure. The catalytic material is effective to decompose nitrous oxide (N2O) to nitrogen (N2) and oxygen (O2) and/or to reduce N2O to N2 and water (H2O) and/or (CO2) under conditions of an exhaust stream of an internal combustion engine operating under conditions that are stoichiometric or lean with periodic rich transient excursions. Methods of making and using the same are also provided.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: April 16, 2019
    Assignee: BASF Corporation
    Inventors: Yuejin Li, Xiaolai Zheng, Stanley A. Roth, Olga Gerlach, Andreas Sundermann
  • Patent number: 10245582
    Abstract: Provided is catalyst material useful for the selective catalytic reduction of NOx in lean burn exhaust gas, wherein the catalyst material is a hydrothermally stable, low SAR aluminosilicate zeolite loaded with a synergistic combination of one or more transition metals, such as copper, and one or more alkali or alkaline earth metals, such as calcium or potassium.
    Type: Grant
    Filed: April 11, 2013
    Date of Patent: April 2, 2019
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Joseph Michael Fedeyko, Hai-Ying Chen
  • Patent number: 10240502
    Abstract: The subject matter of the disclosure relates to a method of diagnosing NOx storage catalyst during the operation of a motor vehicle. The method uses two diagnosis sub-methods having various sensitivities with respect to sulfur contamination of the NOx storage catalyst. The results of the two sub-methods are used to ascertain proportions of aging of the NOx storage catalyst resulting from thermal aging and sulfur contamination.
    Type: Grant
    Filed: January 16, 2017
    Date of Patent: March 26, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Frederik De Smet, Kim Ford, Marcus Timothy Davies
  • Patent number: 10221741
    Abstract: An exhaust gas control apparatus has an exhaust gas control element other than an SCR catalyst. A temperature increase treatment unit executes temperature increase treatment that increases temperature of exhaust gas flowing into the exhaust gas control apparatus so as to increase the temperature of the exhaust gas control element to a specified target temperature. In this case, when operation of the internal combustion engine is stopped while the temperature increase treatment unit is not executing the temperature increase treatment, addition of an additive to the SCR catalyst from an addition valve is executed after operation stop of the internal combustion engine. When operation of the internal combustion engine is stopped while the temperature increase treatment unit is executing the temperature increase treatment, addition of the additive to the SCR catalyst from the addition valve is not executed after operation stop of the internal combustion engine.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: March 5, 2019
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Shinya Asaura, Masaaki Sato, Ryohei Ono
  • Patent number: 10213733
    Abstract: A process and an apparatus for gas denitration, involving first the use of an oxidizing agent to oxidize NO in a gas to NO2, then using a denitration agent to absorb the NO2 in the gas, thus achieving the purpose of denitration.
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: February 26, 2019
    Assignee: BEIJING BOYUAN HENGSHENG HIGH-TECHNOLOGY CO., LTD.
    Inventor: Xionghui Wei
  • Patent number: 10207221
    Abstract: The present invention relates to a new strategy for capturing NOx using a two-step process.
    Type: Grant
    Filed: April 16, 2015
    Date of Patent: February 19, 2019
    Assignee: DANMARKS TEKNISKE UNIVERSITET
    Inventors: Rasmus Fehrmann, Anders Riisager, Susanne L. Mossin, Peter Thomassen, Anders Theilgaard Madsen, Andreas Jonas Kunov-Kruse
  • Patent number: 10201807
    Abstract: Catalyst articles having an ammonia slip catalyst (ASC) comprising a blend of platinum on a support with low ammonia storage and a first SCR catalyst, and a second catalyst, such as a diesel oxidation catalyst, a diesel exotherm catalyst (DEC), a NOx absorber, a selective catalytic reduction/passive NOx adsorber (SCR/PNA), a cold-start catalyst (CSC) or a three-way catalyst (TWC) are disclosed. The catalyst articles can also contain one or two additional SCR catalysts. The catalysts can be present in one of various configurations. The catalytic articles are useful for selective catalytic reduction (SCR) of NOx in exhaust gases and in reducing the amount of ammonia slip. Methods of using the catalytic articles in an SCR process, where the amount of ammonia slip is reduced, are also described.
    Type: Grant
    Filed: June 16, 2016
    Date of Patent: February 12, 2019
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Mikael Larsson, David Micallef
  • Patent number: 10125701
    Abstract: A method for operating an internal combustion engine using an external exhaust-gas recirculation device with a recirculation setting device to set the flow rate of the recirculated exhaust gas and using a closing time setting device to adjust the closing time of the at least one inlet valve of the internal combustion engine. For the reduction of nitrogen oxides emitted by the internal combustion engine, it is possible, by way of the closing time setting device, for a nitrogen oxide reduction cycle to be set in which the at least one inlet valve of the internal combustion engine closes earlier or later than in the basic cycle.
    Type: Grant
    Filed: October 21, 2016
    Date of Patent: November 13, 2018
    Assignee: MAN TRUCK & BUS AG
    Inventors: Joachim Weiß, Thomas Malischewski
  • Patent number: 10092896
    Abstract: A catalyst for selective catalytic reduction is described. Cerium (III) sulfate (cerous sulfate) is bound to a support. The catalyst also includes vanadium oxide and cerium oxide.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: October 9, 2018
    Assignees: Doosan Engine Co., Ltd., Korea Institute of Science and Technology
    Inventors: Jin Ho Cheon, Kyung Ju Lee, Sang Jin Kim, Heon Pil Ha
  • Patent number: 10092879
    Abstract: A selective catalytic reduction system may include a single housing defining a single centerline axis. The selective catalytic reduction system may also include a diesel particulate filter disposed within the single housing and having a DPF center axis aligned with the single centerline axis. The selective catalytic reduction system may also include an SCR catalyst disposed within the single housing and having a center axis aligned with the single centerline axis. In some implementations, the diesel particulate filter may include one or more SiC filters. In some implementations, the SCR catalyst may include one or more extruded SCR catalysts.
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: October 9, 2018
    Assignee: Cummins Emission Solutions Inc.
    Inventors: Randolph G. Zoran, Ryan M. Johnson, David M. Sarcona, Carl A. McDonald, Kenneth R. Federle, John G. Buechler, Scott Lubenow
  • Patent number: 10086330
    Abstract: Coal-derived mineral matter is used to capture or remove combustion gas emissions from flue gas or exhaust gas. The coal-derived mineral matter may be obtained by separating it from coal particles, such as by use of a flotation separation process. Coal-derived mineral matter may also be present in fine coal refuse. In the method of removing combustion gas emissions from flue gas, an aqueous suspension of coal-derived mineral matter particles is contacted with the combustion gas emissions for sufficient time to cause the combustion gas emissions to react with the aqueous suspension and form an enhanced aqueous suspension. The combustion gas emissions may comprise NOx, SOx, CO, or mixtures thereof. An aqueous suspension of coal-derived mineral matter particles containing enhanced amounts of soluble and insoluble sulfate, sulfite, nitrate, nitrite, or carbonate reaction compounds formed by reaction of the aqueous suspension of the coal-derived mineral matter particles with combustion gas emissions.
    Type: Grant
    Filed: January 6, 2017
    Date of Patent: October 2, 2018
    Assignee: OMNIS MINERAL TECHNOLOGIES, LLC
    Inventors: James S. Swensen, Douglas E. Grunder, Simon K. Hodson
  • Patent number: 10082062
    Abstract: A method for increasing a catalytic efficiency of a catalyst, comprising providing a catalyst. Finally, the catalyst is installed into a selective catalytic reduction system of an aftertreatment system configured to reduce constituents of an exhaust gas generated by an engine. The catalyst is soaked in a liquid which consists essentially of one of water or a water-comprising solution. The soaking occurs at least one of before or after installing the catalyst in the selective catalytic reduction system. The catalyst can include a copper zeolite catalyst.
    Type: Grant
    Filed: April 18, 2016
    Date of Patent: September 25, 2018
    Assignee: CUMMINS EMISSION SOLUTIONS, INC.
    Inventors: Nathan A. Ottinger, Z. Gerald Liu, Yuanzhou Xi, Rebecca A. Veele, Changsheng C. Su, Niklas Schmidt
  • Patent number: 10082063
    Abstract: The present techniques are directed to a system and methods for operating a gas turbine system. An exemplary gas turbine system includes an oxidant system, a fuel system, and a control system. A combustor is adapted to receive and combust an oxidant from the oxidant system and a fuel from the fuel system to produce an exhaust gas. A catalyst unit including an oxidation catalyst that includes an oxygen storage component is configured to reduce the concentration of oxygen in the exhaust gas to form a low oxygen content product gas.
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: September 25, 2018
    Assignee: ExxonMobil Upstream Research Company
    Inventors: Tilman W. Beutel, Sulabh K. Dhanuka