Plural Chemical Reaction Stages Patents (Class 422/170)
  • Patent number: 10415448
    Abstract: An exhaust gas cleaning system for an internal combustion engine is provided with, in an exhaust passage of an internal combustion engine and in order from an upstream side: a hydrocarbon supply unit; an upstream side catalyst unit of an oxidation catalyst, a NOx reduction catalyst, or the like; and a catalyst-equipped fine particle collection filter having a hydrocarbon adsorption function, wherein when a vehicle on which the engine is mounted accelerates after driving for a preset set time period at a temperature of exhaust gas equal to or less than a preset set exhaust gas temperature, the supply of hydrocarbon into the exhaust gas is started when an exhaust gas temperature becomes equal to or more than a preset first set temperature, and the supply of hydrocarbon is terminated when a preset termination condition is satisfied.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: September 17, 2019
    Assignee: ISUZU MOTORS LIMITED
    Inventors: Daiji Nagaoka, Masashi Gabe
  • Patent number: 10364722
    Abstract: A method for regulating an exhaust-gas aftertreatment device for an internal combustion engine, wherein respectively one loading state of a first SCR component and of a second SCR component arranged downstream of the first SCR component is determined. The loading state of the second SCR component is regulated by way of a dosing system for dosing a reducing agent.
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: July 30, 2019
    Assignee: FEV EUROPE GMBH
    Inventors: Sebastian Petri, Eric Brueckner, Ibrahim Can Ozyalcin
  • Patent number: 10119445
    Abstract: An exhaust system for treating an exhaust gas from an internal combustion engine is disclosed. The system comprises a modified lean NOx trap (LNT), a urea injection system, and an ammonia-selective catalytic reduction (NH3-SCR) catalyst. The modified LNT comprises platinum, palladium, barium, and a ceria-containing material, and has a platinum:palladium molar ratio of at least 3:1. The modified LNT stores NOx at temperatures below about 200° C. and releases the stored NOx at temperatures above about 200° C. The urea injection system injects urea at temperatures above about 180° C.
    Type: Grant
    Filed: September 16, 2014
    Date of Patent: November 6, 2018
    Assignee: Johnson Matthey Public Limited Company
    Inventor: Daniel Swallow
  • Patent number: 10105692
    Abstract: A catalytic article for treating an exhaust gas stream containing one or more of NOx, hydrocarbons, CO, SOx and ammonia from a combustion turbine comprises (a) a substrate having an inlet end and an outlet end defining an axial length; (b) an oxidation layer comprising an oxidation catalyst comprising one or more noble metals, the oxidation layer being positioned on the substrate and covering the axial length of the substrate; and (c) an SCR layer comprising an SCR catalyst, the SCR layer being positioned on the oxidation layer and overlapping a portion of the oxidation layer, wherein the portion is less than 100%.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: October 23, 2018
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Paul Joseph Andersen, Kevin Doura
  • Patent number: 10022666
    Abstract: The present invention is an apparatus and method having dynamically reconfigurable air flow paths for supporting polishing and non-polishing operations. The invention includes a first baghouse section and a second baghouse section coupled to the first baghouse section via conduit. A set of valves is disposed along the conduit to direct air flow through the baghouse apparatus. A controller configures the baghouse apparatus by actuating at least one valve in the set of valves. The controller automatically configures the baghouse apparatus in either a polishing operation or a non-polishing operation based on a predetermined criteria.
    Type: Grant
    Filed: February 6, 2015
    Date of Patent: July 17, 2018
    Assignee: GCC of America, Inc.
    Inventors: Steven Douglas Roark, Gina Nance
  • Patent number: 9771844
    Abstract: A low emissions 2-stroke natural gas fueled engine includes at least one cylinder with an exhaust port in communication with a silencer-catalytic converter unit. The unit has first and second volumes in communication with each other. The first volume damps spurious exhaust pressure excursions and removes particulates in the exhaust. The second volume houses an oxidation catalyst for treating exhaust to reduce exhaust emissions. The engine oil has at most 10 ppm zinc content to reduce metal poisons contained in the exhaust prior to contact with the oxidation catalyst. The engine oil preferably has a very low ash content to minimize sulfur combustion components in the exhaust to reduce masking of the oxidation catalyst. The first volume preferably has a pressure relief valve set to relieve at a pressure greater than the maximum normal operating pressure of the engine to avoid excessive pressure excursions of the engine exhaust from damaging the oxidation catalyst.
    Type: Grant
    Filed: February 10, 2014
    Date of Patent: September 26, 2017
    Assignee: GE Oil & Gas Compression Systems, LLC
    Inventors: Bruce M. Chrisman, Thomas J. Hurley
  • Patent number: 9731246
    Abstract: In an exhaust gas purification apparatus provided in an exhaust as path of an engine, it is an object of the present invention to shorten a pipe length of a bypass path bypassing a purification catalyst as short as possible, thereby reducing initial costs. The exhaust gas purification apparatus includes a purification casing in which at least the purification catalyst is accommodated. The purification catalyst purifies exhaust gas from the engine. The purification casing is integrally provided with the bypass path separately from the purification path in which the purification catalyst exists. The bypass path makes the exhaust gas bypasses the purification catalyst without passing through the purification catalyst.
    Type: Grant
    Filed: October 3, 2013
    Date of Patent: August 15, 2017
    Assignee: Yanmar Co., Ltd.
    Inventors: Tetsuya Yokoyama, Tsuyoshi Inoue
  • Patent number: 9719386
    Abstract: An exhaust after-treatment system including at least one exhaust treatment component (18); and a particulate matter dispersion device (40) located upstream of the exhaust treatment component (18). The particulate matter dispersion device (40) includes at least one nozzle line (61) having a plurality of nozzles (58) formed therein, and the particulate matter dispersion device (40) is operable to inject compressed gas towards the exhaust treatment component (18) to substantially minimize build-up of particulate matter at the exhaust treatment component (18).
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: August 1, 2017
    Assignee: Tenneco Automotive Operating Company Inc.
    Inventors: Gaofeng Fan, Biao Du, Lin Wang, Jianqiang Fan, Anzhou Wu, Jian Wu, Michael Golin
  • Patent number: 9702269
    Abstract: A device for capture of acid gas of combustion fumes of a thermal power plant, including: absorption means (10) of the gas by capture fluid, a regenerator (1) where the capture fluid and a regeneration fluid steam are put in contact, introduction means (11) of the regeneration fluid in the regenerator, condensation means (2, 3, 4), at the head of said regenerator, separation means (6) of liquid phase of the regeneration fluid and gaseous phase rich in acid gas, Wherein: the regeneration fluid steam introduced is superheated, the regenerator (1) includes means limiting the contact time to substantially maintain the flow rate of regeneration fluid steam, the condensation means (2, 3, 4) are in thermal exchange with first evaporation means of working fluid, and first reintroduction means (13) of steam obtained in a turbine (14).
    Type: Grant
    Filed: July 22, 2014
    Date of Patent: July 11, 2017
    Assignee: ELECTRICITE DE FRANCE
    Inventor: Yann Le Moullec
  • Patent number: 9700841
    Abstract: Synergized PGM catalyst converters configured as three-way catalyst (TWC) systems are disclosed. The disclosed SPGM system configurations exhibit high thermal stability, attenuated air to fuel (A/F) perturbations, enhanced TWC activity, and high catalytic conversion efficiency as a result of synergizing a low PGM loading close-coupled catalyst (CCC), with Ce-based oxygen storage, with a front spinel zone of suitable mixed metal oxide compositions acting as pre-catalyst for oxygen storage. The attenuation of A/F perturbations to lower amplitude, before exhaust gas emissions go into the standard PGM CCC, allows the system to work within a range of R values very close to the stoichiometric point for both lean and rich conditions, and high catalytic conversion efficiency in NOX, CO, and HC conversions. The disclosed SPGM system configurations can be utilized in a plurality of TWC applications, such as conventional TWC systems including an optional underfloor catalyst.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: July 11, 2017
    Assignee: BYD Company Limited
    Inventor: Stephen J. Golden
  • Patent number: 9677447
    Abstract: An aftertreatment module is disclosed for use with an engine. The aftertreatment module may have an inlet housing at least partially defining an inlet passage for exhaust, and at least one mixer disposed in the inlet passage. The aftertreatment module may also have an outlet housing at least partially defining an outlet passage for exhaust, and a catalyst housing removably connected between the inlet housing and the outlet housing. The aftertreatment module may further have a plurality of catalyst substrates configured to be mounted in the catalyst housing, to receive exhaust from the inlet passage in parallel, and to discharge exhaust to the outlet housing in parallel.
    Type: Grant
    Filed: December 5, 2014
    Date of Patent: June 13, 2017
    Assignee: Caterpillar Inc.
    Inventors: Raymond Upano Isada, Kurtis Edward Chenoweth, Eric Spaeth, Ping Xiang, Yung T. Bui
  • Patent number: 9630144
    Abstract: Implementations disclosed herein provide a dry chemical scrubber with a pH regulator that adjusts an internal pH value of the dry chemical scrubber by adding high pH elements to the contents of the dry chemical scrubber on a continuous or periodic basis.
    Type: Grant
    Filed: June 18, 2014
    Date of Patent: April 25, 2017
    Assignee: MTARRI/VARANI EMISSIONS TREATMENT, LLC
    Inventors: John Jenkins, Frederick T. Varani, Thomas A. Jones, Paul Bertram Trost, Aaron F. Primmer, Nathan A. Emsick
  • Patent number: 9381462
    Abstract: A system for reducing emissions includes a gas production source that produces nitrogen oxides, sulfur oxides, hydrogen sulfide, sulfuric acid, nitric acid, formaldehyde, benzene, metal oxides, or volatile organic compound emissions. An exhaust plenum is downstream from the gas production source, and structure for dispersing a solvent is in the exhaust plenum. A collection tank is in fluid communication with the exhaust plenum to receive the solvent from the exhaust plenum, and a heat source is in the exhaust plenum downstream from the structure for dispersing the solvent. A method for reducing emissions from a gas production source includes flowing exhaust gases through an exhaust plenum, dispersing a solvent through a nozzle in the exhaust plenum, collecting the dispersed solvent in a collection tank, and heating the exhaust gases flowing through the exhaust plenum downstream from the nozzle.
    Type: Grant
    Filed: July 1, 2013
    Date of Patent: July 5, 2016
    Assignee: General Electric Company
    Inventors: Robert Thomas Thatcher, Gilbert Otto Kraemer, Andrew Mitchell Rodwell, Brett Matthew Thompson
  • Patent number: 9364790
    Abstract: An exhaust treatment component including a mixing assembly located within a housing. The mixing assembly includes a decomposition tube having a first end and a second end, the first end being configured to receive the exhaust from the inlet and being configured to receive a reagent exhaust treatment fluid; a flow reversing device disposed proximate the second end, the flow reversing device configured to direct a mixture of the exhaust and reagent exhaust treatment fluid as the mixture exits the second end of the decomposition tube in a direction back toward the first end, the flow reversing device including a plurality of deflecting members for swirling and intermixing the exhaust and reagent exhaust treatment fluid; and a swirl arrester device configured to eliminate the swirling of the exhaust and reagent exhaust treatment fluid after exiting the flow reversing device.
    Type: Grant
    Filed: September 15, 2014
    Date of Patent: June 14, 2016
    Assignee: Tenneco Automotive Operating Company Inc.
    Inventors: Manoj Sampath, Omkar Champhekar
  • Patent number: 9352276
    Abstract: A swirl device for intermixing a reagent exhaust treatment fluid and an exhaust produced by an engine. The swirl device includes a cylindrical tube defining an inlet for receipt of the reagent exhaust treatment fluid and the exhaust, and a swirl member attached to the cylindrical tube. The swirl member conically expands outward from the cylindrical tube and includes a plurality of tabs separated by elongate slots. The plurality of tabs are configured to swirl and intermingle the reagent exhaust treatment fluid and the exhaust.
    Type: Grant
    Filed: September 15, 2014
    Date of Patent: May 31, 2016
    Assignee: Tenneco Automotive Operating Company Inc.
    Inventor: Manoj Sampath
  • Patent number: 9334781
    Abstract: An exhaust treatment component for treating an exhaust produced by an engine. The exhaust treatment component includes a housing, a first exhaust treatment component substrate positioned within the housing, and a dosing module for dosing a reagent exhaust treatment fluid into the exhaust. The dosing module is secured to the housing and positioned upstream of the first exhaust treatment component substrate. An ultrasonic transducer is positioned between the dosing module and the first exhaust treatment component substrate. The ultrasonic transducer is configured to emit a plurality of ultrasonic waves into the exhaust including the reagent exhaust treatment fluid.
    Type: Grant
    Filed: September 15, 2014
    Date of Patent: May 10, 2016
    Assignee: Tenneco Automotive Operating Company Inc.
    Inventors: John Stanavich, William Adams, Daniel Alexander, Michael Golin
  • Patent number: 9295943
    Abstract: A filter system and method for capturing and treating HAPs and VOCs. The system has one or more dual pass filters. Each pass filter has a media bed with a plurality of VOC digesting microbes. Fluid from a holding tank containing additional microbes may be used to regenerate the media beds by transferring the fluid from the holding tank to the dual pass filter. Any one of the dual pass filters may be isolated from the flow of HAPs for regeneration of the media bed. Any one of the dual pass filters may also be isolated from fluid communication with the holding tank while in service in capturing HAPs and/or VOCs. The filter system being contained in a highly mobile enclosure.
    Type: Grant
    Filed: July 18, 2013
    Date of Patent: March 29, 2016
    Assignee: AMERICAN ENVIRONMENTAL FABRICATION & SUPPLY LLC
    Inventors: Scott Manes, Randy Glad
  • Patent number: 9040005
    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: Grant
    Filed: September 12, 2012
    Date of Patent: May 26, 2015
    Assignee: ALFA LAVAL CORPORATE AB
    Inventor: Jens Peter Hansen
  • Publication number: 20150139882
    Abstract: An integrated sorbent injection, heat recovery, and flue gas desulfurization system is disclosed. A dry sorbent is injected into the flue gas upstream of the air heater. This reduces the acid dew point temperature, permitting additional heat energy to be captured when the flue gas passes through the air heater. The flue gas then passes through a desulfurization unit and through a baghouse, where solids are captured. The capture of additional heat energy permits the overall boiler efficiency to be increased while safely operating at a lower flue gas temperature. The integrated system consumes no greater quantity of sorbent than conventional methods but provides the benefit of improved plant heat rate.
    Type: Application
    Filed: July 21, 2014
    Publication date: May 21, 2015
    Inventors: Eric M. WARREN, Jeb W. GAYHEART, Anthony A. SILVA
  • Patent number: 9034267
    Abstract: In an internal combustion engine, inside of an engine exhaust passage, a hydrocarbon feed valve (15) and an exhaust purification catalyst (13) are arranged. The exhaust purification catalyst (13) is comprised of a mixture of a first catalyst in which platinum (51) and a basic layer (52) are carried on alumina (50) and a second catalyst in which rhodium (56) is carried on zirconia (55). The concentration of hydrocarbons which flow into the exhaust purification catalyst (13) is made to vibrate by within a predetermined range of amplitude of a 200 ppm or more and within a predetermined range of period of 5 second or less, whereby the NOx which is contained in exhaust gas is reduced at the exhaust purification catalyst (13).
    Type: Grant
    Filed: October 4, 2010
    Date of Patent: May 19, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Masao Watanabe, Koutarou Hayashi, Kohei Yoshida, Yuki Bisaiji, Kazuhiro Umemoto
  • Patent number: 9034269
    Abstract: The present invention relates to a diesel oxidation catalyst comprising a carrier substrate, and a first washcoat layer disposed on the substrate, the first washcoat layer comprising palladium supported on a support material comprising a metal oxide, gold supported on a support material comprising a metal oxide, and a ceria comprising compound, as well as a process for the preparation of such catalyst.
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: May 19, 2015
    Assignee: BASF SE
    Inventors: Marcus Hilgendorff, Alfred H. Punke, Torsten W. Müller-Stach, Gerd Grubert, Torsten Neubauer, Jeffrey B. Hoke
  • Patent number: 9028761
    Abstract: In an internal combustion engine, inside of an engine exhaust passage, a hydrocarbon feed valve (15) and an exhaust purification catalyst (13) are arranged. The exhaust purification catalyst (13) is comprised of an upstream-side catalyst (14a) and a downstream-side catalyst (14b) arranged in series at an interval from each other. The upstream-side catalyst (14b) has a smaller cross-sectional area than the downstream-side catalyst (14b). The concentration of hydrocarbons which flow into the upstream-side catalyst (14a) is made to vibrate by within a predetermined range of amplitude of a 200 ppm or more and within a predetermined range of period of 5 seconds or less, whereby the NOx which is contained in exhaust gas is reduced at the exhaust purification catalyst (13).
    Type: Grant
    Filed: December 24, 2010
    Date of Patent: May 12, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kazuhiro Umemoto, Kohei Yoshida, Mikio Inoue
  • Publication number: 20150125353
    Abstract: An air pollution control apparatus includes: a denitration unit that removes nitrogen oxides from a flue gas; a desulfurization unit that is installed on a gas flow downstream side of the denitration unit to remove the sulfur oxides in a flue gas 11B; a finish denitration and desulfurization unit that is installed on the gas flow downstream side of the desulfurization unit to perform finish denitration and desulfurization of NO2 and SO2; and a carbon dioxide recovery unit that is installed on the gas flow downstream side of the finish denitration and desulfurization unit to remove and recover the carbon dioxide in a flue gas.
    Type: Application
    Filed: May 17, 2013
    Publication date: May 7, 2015
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Tsuyoshi Oishi, Hiroshi Tanaka, Naohiko Ukawa
  • Publication number: 20150113966
    Abstract: Systems, apparatus and methods are disclosed for reducing the amount of nitrous oxide (N2O) produced in a selective catalytic reductant (SCR) catalyst in an exhaust aftertreatment system. The SCR catalysts are arranged to reduce the amount of N2O produced during NOx reduction while not adversely affecting NOx conversion.
    Type: Application
    Filed: October 30, 2013
    Publication date: April 30, 2015
    Applicant: Cummins Inc.
    Inventors: Krishna Kamasamudram, Neal W. Currier, Ashok Kumar
  • Patent number: 9010097
    Abstract: In an internal combustion engine, inside of an engine exhaust passage, a hydrocarbon feed valve (16), an exhaust purification catalyst (13), a particulate filter (14), and an NO2 reduction catalyst (15) are arranged. At the time of engine operation, the amplitude of change of the concentration of hydrocarbons which flow into the exhaust purification catalyst (13) is made to become within a predetermined range of amplitude by control of the injection amount of hydrocarbons from the hydrocarbon feed valve (16). When the NO2 which is produced at the particulate filter (14) should be reduced to NO, the injection amount of hydrocarbons is increased whereby the pass through amount of hydrocarbons which pass straight through the exhaust purification catalyst (13) is increased.
    Type: Grant
    Filed: March 17, 2011
    Date of Patent: April 21, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Mikio Inoue, Kohei Yoshida, Yuki Bisaiji, Kazuhiro Umemoto, Masahide Iida
  • Patent number: 9011569
    Abstract: A wall flow type particulate filter (24) adapted to be arranged in an exhaust passage of an internal combustion engine in which combustion is performed in an excess of oxygen carries a solid acid. The solid acid has an acid strength which is higher than the acid strength of sulfurous acid and lower than the acid strength of sulfuric acid.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: April 21, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hiroshi Otsuki, Shigeki Nakayama, Hiromasa Nishioka, Katsuhiko Oshikawa, Yoshihisa Tsukamoto, Junichi Matsuo, Yuichi Sobue, Daichi Imai, Kou Sugawara
  • Patent number: 9011568
    Abstract: A filter for internal combustion engines, includes a rigid external casing provided with at least an inlet for a fluid to be filtered and an outlet for the fluid when filtered, and a filter cartridge located internally of the external casing, which includes a plurality of tubular filter walls arranged parallel to one another which are destined to be crossed by the fluid flowing from the inlet towards the outlet of the external casing; the external casing being conformed such as to delimit a pouch a transversal section of which, performed along a perpendicular plane to axes of the tubular filter walls, exhibits a prevalent line of development and a small width with respect to the prevalent line of development; the tubular filter walls being arranged internally of the pouch, side by side with one another, forming a single row which follows the prevalent line of development of the pouch.
    Type: Grant
    Filed: August 4, 2010
    Date of Patent: April 21, 2015
    Assignee: UFI Innovation Center S.R.L.
    Inventor: Giorgio Girondi
  • Patent number: 9011809
    Abstract: An ammonia oxidation catalyst being superior in heat resistance and capable of suppressing by-production of N2O or NOx. The ammonia oxidation catalyst is made by coating at least two catalyst layers having a catalyst layer (lower layer) including a catalyst supported a noble metal on an inorganic base material including any of a composite oxide (A) having at least titania and silica as main components, alumina, and a composite oxide (B) consisting of alumina and silica; and a catalyst layer (upper layer) including a composite oxide (C) consisting of at least silica, tungsten oxide, ceria and zirconia, at the surface of an integral structure-type substrate, wherein a composition of the composite oxide (C) is silica: 20% by weight or less, tungsten oxide: 1 to 50% by weight, ceria: 1 to 60% by weight, and zirconia: 30 to 90% by weight.
    Type: Grant
    Filed: February 24, 2012
    Date of Patent: April 21, 2015
    Assignee: N.E. Chemcat Corporation
    Inventors: Tomoaki Ito, Toshinori Okajima, Takashi Hihara, Makoto Nagata
  • Patent number: 8999048
    Abstract: An exhaust gas purifying apparatus for a diesel engine includes a diesel particulate filter (DPF) in an exhaust system in the diesel engine. The exhaust gas purifying apparatus is constructed to execute regeneration of the DPF by raising a temperature of the DPF in a case where a predetermined DPF regeneration condition is fulfilled, interrupt the regeneration of the DPF, execute idling stop, automatically restart the diesel engine and then restart the regeneration of the DPF, and when shifting to the idling operation is carried out during regeneration of the DPF, delay execution of the idling stop until a temperature of the DPF at a time at which the idling stop is started becomes not less than a temperature of the DPF at a time at which shifting to an idling operation is carried out even in a case where the predetermined idling stop condition is fulfilled.
    Type: Grant
    Filed: May 20, 2011
    Date of Patent: April 7, 2015
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Toru Nishizawa, Risa Yamamoto
  • Patent number: 8999047
    Abstract: A system for removing Hg contained in flue gas from a boiler, the system includes: a heat exchanger for performing heat exchange of the flue gas from the boiler; a precipitator for removing soot and dust in the flue gas; a wet desulfurization device for removing mercury oxide Hg2+ in the flue gas using an alkali absorbent; and; a removal assistant supply unit for supplying a removal assistant for removing impurities into a limestone and gypsum slurry that circulates through the wet desulfurization device.
    Type: Grant
    Filed: October 15, 2010
    Date of Patent: April 7, 2015
    Assignee: Mitsubishi Hitachi Power Systems, Ltd.
    Inventors: Nobuyuki Ukai, Seiji Kagawa, Tatsuto Nagayasu, Takuya Okamoto
  • Patent number: 8992652
    Abstract: A filtering device features a ceramic filter body for filtering a fluid flow, the filter body consisting of a wavy layer and a flat layer and the wavy and flat layer being wound in a spiral-shaped manner. The wave length of the waves increases from the inside to the outside with increasing distance to the longitudinal axis of the filter body such that the wave troughs and the wave peaks of at least two radially adjacent windings each lie on a common radial plane.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: March 31, 2015
    Assignee: Mann+Hummel GmbH
    Inventors: Arndt-Udo Rolle, Frank Ehlen, Kathrin Lichtenwalter, Jochen Linhart, Nadine Dietsch
  • Patent number: 8992842
    Abstract: A system for producing ammonia includes sources of hydrogen and nitrogen gas, a hydrogen gas booster for producing produce pressurized hydrogen gas, a nitrogen gas booster for producing pressurized nitrogen gas, and a synthesis reactor that receives a mixture of the pressurized hydrogen and nitrogen gases. The synthesis reactor includes an inlet for receiving the pressurized gas mixture, a heating zone adjacent the inlet for heating the gas mixture, a catalyst zone downstream from the heating zone for catalyzing a reaction of the mixture to form ammonia and a by-product, and a cooling zone downstream from the catalyst zone for cooling the ammonia and the by-product. The system has a separator for separating the ammonia from the by-product, an ammonia storage tank for collecting the ammonia, and a recycle loop for re-circulating the by-product back to the synthesis reactor.
    Type: Grant
    Filed: September 10, 2012
    Date of Patent: March 31, 2015
    Inventor: Roger Gordon
  • Patent number: 8992651
    Abstract: [Problem] To provide a filter whose initial collection efficiency can be increased and whose pressure loss increase can be suppressed. [Means to solve the problem] A ceramic filter includes: numerous crystalline masses bound to one another each formed of aggregation of columnar crystals, wherein a number of large diameter pores are present between the numerous crystalline masses, and small diameter pores are present between the numerous columnar crystals forming the crystalline mass.
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: March 31, 2015
    Assignee: Kubota Corporation
    Inventors: Atsushi Sugai, Hiroshi Yamaguchi
  • Publication number: 20150086457
    Abstract: A system for treating mercury in flue gas is provided. The system includes a mercury adsorbent supply device to adsorb the mercury with the mercury adsorbent; a precipitator to collect the mercury adsorbent with adsorbed mercury and soot in the flue gas; a mercury adsorption assistant supply device to remove mercury remaining in the flue gas; and a desulfurization device to remove sulfur oxide (SOx) in the flue gas.
    Type: Application
    Filed: May 31, 2012
    Publication date: March 26, 2015
    Applicant: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Seiji Kagawa, Hideaki Sakurai, Nobuyuki Ukai, Susumu Okino, Tatsuto Nagayasu
  • Patent number: 8984863
    Abstract: Provided is an ammonia injection device (10) installed at an exhaust gas duct through which an exhaust gas generated in a gas turbine flows, and configured to inject ammonia into the exhaust gas at an upstream side of a denitration catalyst configured to perform denitration processing in a flowing direction of the exhaust gas, the device including a plurality of ammonia injection pipes (11) disposed in parallel each other in a surface which traverses the exhaust gas duct. A plurality of nozzle pipes (12) configured to eject the ammonia from the ammonia injection pipes in an arrangement direction of the plurality of ammonia injection pipes are installed at the ammonia injection pipe in a longitudinal direction of the ammonia injection pipes. Diffuser panels (13) extending toward a downstream side in a flowing direction of the exhaust gas at both sides in a longitudinal direction of the ammonia injection pipes with respect to the nozzle pipes are formed at the nozzle pipes.
    Type: Grant
    Filed: November 1, 2011
    Date of Patent: March 24, 2015
    Assignee: IHI Corporation
    Inventors: Akinori Yukimura, Masafumi Kawai, Yoshiyuki Yamane
  • Patent number: 8978363
    Abstract: A diesel particulate filter (“DPF”) system that is more convenient than a conventional DPF system, including a DPF having a catalyzed soot filter (“CSF”) that is connected to an exhaust pipe of a diesel engine in order to collect particulate matter (“PM”) in exhaust gas, and a diesel oxidation catalyst (“DOC”) provided on an upstream side of the CSF; and temperature sensors provided respectively on an upstream side and a downstream side of the DOC. When a PM accumulation amount in the CSF exceeds a fixed amount, DPF regeneration is performed by setting a temperature detected by the upstream side temperature sensor at or above a first threshold and setting a temperature detected by the downstream side temperature sensor at or above a second threshold. When a breakdown is detected in the upstream side temperature sensor, the second threshold is modified upward.
    Type: Grant
    Filed: June 10, 2011
    Date of Patent: March 17, 2015
    Assignee: Isuzu Motors Limited
    Inventors: Takashi Ikeda, Naofumi Ochi, Hitoshi Satou
  • Patent number: 8974570
    Abstract: A retaining seal material includes inorganic fibers, inorganic particles adhering to surfaces of the inorganic fibers, a first principal surface, and a second principal surface. A mean particle diameter of the inorganic particles in a vicinity of a center in a thickness direction of the retaining seal material is smaller than at least one of a mean particle diameter of the inorganic particles in a vicinity of the first principal surface and a mean particle diameter of the inorganic particles in a vicinity of the second principal surface.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: March 10, 2015
    Assignee: Ibiden Co., Ltd.
    Inventors: Takahiko Okabe, Keiji Kumano
  • Patent number: 8974563
    Abstract: An exhaust gas purification system includes a diesel particulate filter (“DPF”) which collects particulate matter (“PM”) in exhaust gas, an exhaust pipe injector which performs exhaust pipe injection, and a DPF regeneration control unit which performs temperature rise control of an exhaust gas temperature by the exhaust pipe injection to regenerate the DPF when the PM collected by the DPF exceeds a fixed amount and which, during the regeneration, integrates an amount of time during which the exhaust gas temperature exceeds a PM combustion temperature and completes the regeneration when an integrated value thereof reaches a set regeneration completion value. The DPF regeneration control unit aborts the regeneration when, during regeneration, a total amount of the exhaust pipe injection exceeds an upper limit before the integrated value.
    Type: Grant
    Filed: June 10, 2011
    Date of Patent: March 10, 2015
    Assignee: Isuzu Motors Limited
    Inventors: Takashi Haseyama, Shinji Gotou, Hiroyuki Oohira
  • Patent number: 8974740
    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: Grant
    Filed: March 12, 2013
    Date of Patent: March 10, 2015
    Assignee: Tenneco Automative Operating Company Inc.
    Inventor: John Stanavich
  • Patent number: 8961668
    Abstract: An exhaust gas purification system with which a frequency of diesel particulate filter (“DPF”) regeneration requests can be reduced during long low idle regeneration, thereby improving convenience, including a control unit that performs regeneration control on a DPF provided at an exhaust pipe of an engine. The control unit includes a particulate matter (“PM”) accumulation amount predictor for predicting the amount of PM accumulated by calculating a cumulated value of the PM in an idling state. The control unit starts calculating the cumulated value of the PM by the PM accumulation amount predictor after a first predetermined time has elapsed since a detection of the idling state.
    Type: Grant
    Filed: May 16, 2011
    Date of Patent: February 24, 2015
    Assignee: Isuzu Motors Limited
    Inventors: Takashi Haseyama, Hiroyuki Oohira, Shinji Gotou
  • Patent number: 8961913
    Abstract: The present invention relates to a method and a system for cleaning a CO2 rich flue gas stream containing water vapor and NOX prior to CO2 sequestration. The method and system include heating the flue gas stream to a temperature suitable for selective catalytic reduction (SCR) of NOX in a flue gas heater, reducing at least some of the NOX in the heated flue gas stream to N2 by SCR, and removing at least some of the water vapor from the NOX depleted flue gas stream by adsorption in an adsorption drier.
    Type: Grant
    Filed: July 30, 2013
    Date of Patent: February 24, 2015
    Assignee: ALSTOM Technology Ltd
    Inventors: Olaf Stallmann, Gerhard Heinz, Klaus Schnieder
  • Publication number: 20150049574
    Abstract: An exemplary embodiment includes a blending chamber having a urea inlet, a blending chamber gas inlet, and a blending chamber outlet. A urea source provides a pressurized urea solution to the urea inlet at a urea injection pressure, and a pressurized gas source transmits pressurized gas to the blending chamber gas inlet via a passageway. The passageway is configured to decrease pressure of the pressurized gas transmitted along its length from a first pressure of gas received from the pressurized gas source to a second pressure of gas provided to the blending chamber gas inlet. The first pressure of gas received from the pressurized gas source is greater than the urea injection pressure and the second pressure of gas provided to the blending chamber gas inlet is less than the urea injection pressure.
    Type: Application
    Filed: August 16, 2013
    Publication date: February 19, 2015
    Inventors: George L. Muntean, Steve Holl, Joydeep Chakrabarti, John Anthis, Joshua D. Henry, Samuel Johnson, Andrew Myer
  • Patent number: 8956436
    Abstract: Disclosed are ceramic bodies comprised of composite cordierite aluminum magnesium titanate ceramic compositions and methods for the manufacture of same.
    Type: Grant
    Filed: November 14, 2012
    Date of Patent: February 17, 2015
    Assignee: Corning Incorporated
    Inventors: Adriane Marie Divens-Dutcher, Patrick David Tepesch, Elizabeth Marie Vileno
  • Publication number: 20150044114
    Abstract: An acid gas absorbent according to an embodiment includes at least one kind of amino acid salt represented by the following general formula (1). In the above-described formula (1), R1 indicates a cyclic alkyl group having 3 to 8 carbon atoms, R2 indicates a cyclic alkyl group having 3 to 8 carbon atoms, a chain alkyl group having 1 to 8 carbon atoms, or a hydrogen atom, R3 indicates a methylene group, an alkylene group having 2 to 4 carbon atoms, an alkylidene group having 2 to 4 carbon atoms, or a polymethylene group having 3 to 4 carbon atoms, and M indicates alkali metal.
    Type: Application
    Filed: August 4, 2014
    Publication date: February 12, 2015
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Shinji MURAI, Yasuhiro KATO, Yukishige MAEZAWA, Takehiko MURAMATSU, Daigo MURAOKA, Satoshi SAITO
  • Patent number: 8951488
    Abstract: The present invention relates to a method of cleaning a carbon dioxide rich flue gas stream containing oxygen. The method includes heating the flue gas stream to a temperature suitable for selective catalytic reduction (SCR) of NOX; and reducing at least some of the NOX in the heated flue gas stream to N2 by SCR. Heating of the flue gas stream includes removal of residual oxygen contained in the flue gas by catalytic oxidation of a suitable carburant. The present invention further relates to a gas processing unit.
    Type: Grant
    Filed: February 18, 2014
    Date of Patent: February 10, 2015
    Assignee: ALSTOM Technology Ltd
    Inventor: Olaf Stallmann
  • Patent number: 8951323
    Abstract: A hybrid mounting mat for mounting a catalyst support structure within a housing in an exhaust gas treatment device. The exhaust gas treatment device includes an outer housing, a fragile catalyst support structure, and a mounting mat disposed in the gap between the housing and the fragile catalyst support structure. Additionally disclosed are methods of making the hybrid mounting mat and for making an exhaust gas treatment device incorporating the mounting mat.
    Type: Grant
    Filed: September 24, 2010
    Date of Patent: February 10, 2015
    Assignee: Unifrax I LLC
    Inventor: Amit Kumar
  • Patent number: 8945269
    Abstract: A holding sealing material includes a mat, an inorganic binder and an organic binder. The mat includes inorganic fibers and has an upper part, a center part, and a lower part in a thickness direction. The inorganic binder is loaded on the mat. The organic binder is loaded mainly on the upper part and the lower part of the mat. The holding sealing material is disposed between an exhaust gas-treating body and a casing for housing the exhaust gas-treating body to form an exhaust gas purifying apparatus.
    Type: Grant
    Filed: November 14, 2012
    Date of Patent: February 3, 2015
    Assignee: Ibiden Co., Ltd.
    Inventor: Keiji Kumano
  • Publication number: 20150030507
    Abstract: A catalyst system for exhaust gas purification which comprises a first-stage base metal catalyst located upstream and a second-stage base metal catalyst located downstream, wherein the first-stage base metal catalyst comprises at least one oxide support selected from the group consisting of alumina, ceria, zirconia, yttria, and titania and Cu metal and/or a Cu oxide supported thereon, and in cases where the amount of NOx in the exhaust gas has become or exceeded an NOx criterion, the state of the exhaust gas is switched from slightly rich to rich.
    Type: Application
    Filed: November 9, 2012
    Publication date: January 29, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Takeshi Nobukawa
  • Patent number: 8939761
    Abstract: For the purification of waste gas containing nitrogen oxides in combination with CO, VOCs or nitrous oxide, in particular waste gas resulting from the production of cement clinker, nitric acid, adipic acid, fertilizers and uranium trioxide, a regenerative thermal post-combustion system with at least two regenerators (A, B) is used by means of which the CO, VOCs and nitrous oxide are thermally purified in the combustion chamber (1) at a temperature of 800 to 1000° C. and the nitrogen oxides are thermally reduced with the SCR catalyst (6) by adding a nitrogen-hydrogen compound, wherein the waste gas already thermally purified is removed from the respective two-part regenerator (A or B) at a suitable place at a temperature of approx. 300° C., guided via the SCR catalyst (6) in a constant direction of flow and subsequently fed back to the remaining section (A?, B?) of the regenerator (A or B).
    Type: Grant
    Filed: January 29, 2014
    Date of Patent: January 27, 2015
    Assignee: Chemisch Thermische Prozesstechnik GmbH
    Inventor: Christian Mülleder
  • Patent number: 8940072
    Abstract: A parallel passage fluid contactor structure for chemical reaction processes has one or more segments, where each segment has a plurality of substantially parallel fluid flow passages oriented in an axial direction; cell walls between each adjacent fluid flow passages and each cell wall has at least two opposite cell wall surfaces. The structure also includes at least one active compound in the cell walls and multiple axially continuous conductive filaments either embedded within the cell walls or situated between the cell wall surfaces. The conductive filaments are at least one of thermally and electrically conductive, are oriented in axially, and are in direct contact with the active compound, and are operable to transfer thermal energy between the active material and the conductive filaments. Heating of the conductive filaments may be used to transfer heat to the active material in the cell walls. Methods of manufacturing the structure are discussed.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: January 27, 2015
    Assignee: Inventys Thermal Technologies Inc.
    Inventors: Andre Boulet, Soheil Khiavi