With Heating Of Filter Patents (Class 95/283)
  • Patent number: 9708945
    Abstract: A method of heating an exhaust gas in an exhaust aftertreatment system by selecting a heating mode between different heating modes based on an engine load and a status of a component of the exhaust aftertreatment system. The method includes heating the exhaust gas by operating the electric heater in the selected heating mode and heating the exhaust gas to reduce an exhaust temperature gradient across the exhaust conduit.
    Type: Grant
    Filed: July 15, 2015
    Date of Patent: July 18, 2017
    Assignee: WATLOW ELECTRIC MANUFACTURING COMPANY
    Inventors: Wenzhong Zhang, Mike Bange, Scott Boehmer, Magdi Khair, Julian Tan
  • Patent number: 8747502
    Abstract: A particulate matter reduction apparatus for a diesel engine, which can reduce particulate matter in a convenient manner with a relatively simple structure, while preventing the shortening of the lifespan of a filter and improving particulate matter burning efficiency, is provided. The particulate matter reduction apparatus includes a housing configured to be placed on a flow path into which exhaust gas is discharged from the diesel engine, a filter configured to collect particulate matter contained in the exhaust gas that flows in the housing, electrodes configured to transmit electronic signals to the filter, and a control unit configured to control the electric signals provided to the electrodes. The particulate matter reduction apparatus is advantageous in that particulate matter is burnt and removed by directly heating the filter. In addition, the apparatus is more convenient, compared to a system which requires a filter to be separated and cleaned.
    Type: Grant
    Filed: February 23, 2009
    Date of Patent: June 10, 2014
    Assignee: Industry-Academic Cooperation Foundation, Jeju National University
    Inventors: Heon-Ju Lee, Vadim Yurevich Plaksin
  • Patent number: 8671668
    Abstract: A control circuit for a vehicle powertrain includes a switch that selectivity interrupts current flow between a first terminal and a second terminal. A first power source provides power to the first terminal and a second power source provides power to the second terminal and to a heater of a heated diesel particulate filter (DPF). The switch is opened during a DPF regeneration cycle to prevent the first power source from being loaded by the heater while the heater is energized.
    Type: Grant
    Filed: January 18, 2008
    Date of Patent: March 18, 2014
    Inventors: Eugene V. Gonze, Michael J. Paratore, Jr.
  • Patent number: 8608834
    Abstract: According to an exemplary embodiment of the present disclosure, a system for removing matter from a filtering device of a work machine includes a gas pressurization assembly. An element of the gas pressurization assembly is removably attachable to a first orifice of the filtering device without removing the filtering device from a work machine to which the filtering device is connected. The system also includes a heat source fluidly connected to the gas pressurization assembly.
    Type: Grant
    Filed: August 27, 2012
    Date of Patent: December 17, 2013
    Assignee: Caterpillar Inc.
    Inventors: Cheryl Lynn Sellers, David Thaler, Mark T. Grimm, Jeremy Trethewey, Natalie Noel Vanderspiegel, Richard A. Crandell, Dong Fei, Roger A. Hudson, Mark Alan Gasper, Herbert DaCosta, Eric Charles Fluga, Hemant Prasad Mallampalli, Bruce Frazier, Matthew Fletcher
  • Patent number: 8529670
    Abstract: Aseptic bottling or container filling plant with a clean room arrangement enclosing the aseptic bottling or container filling plant and a filter unit for filtering air entering the clean room, and a method of operation thereof.
    Type: Grant
    Filed: February 3, 2009
    Date of Patent: September 10, 2013
    Assignee: KHS GmbH
    Inventor: Daryoush Sangi
  • Patent number: 8518160
    Abstract: A heat transfer system is provided for a filter house. The filter house is configured to channel air into a turbine engine. The heat transfer system includes at least one of an expansion device and a compressor, a circuit coupled to at least one of the expansion device and the compressor, at least one sensor that detects a parameter of at least one of air channeled through a filter house and the fluid channeled through the circuit, and a controller coupled to the at least one sensor. The controller is configured to selectively control flow of fluid through the circuit to change the parameter of air channeled through the filter house based on the parameter detected by the sensor.
    Type: Grant
    Filed: April 16, 2010
    Date of Patent: August 27, 2013
    Assignee: General Electric Company
    Inventor: Richard M. A. Mann
  • Publication number: 20130186274
    Abstract: A gas purification apparatus, highly purifying gas containing salt derived from molten salt stored in a vessel (10), is provided with a reflux mechanism (35, 42) liquefying the salt, contained in the gas, for return to the molten salt in the vessel, and a filtration mechanism (39, 44) disposed in an exhaust flow path of the gas on a downstream stage of the reflux mechanism.
    Type: Application
    Filed: May 27, 2011
    Publication date: July 25, 2013
    Applicant: Asahi Glass Company, Limited.
    Inventors: Kosuke Sumikura, Katsuji Ikeda, Masaaki Iosaki, Yoshinori Takeuchi
  • Patent number: 8484953
    Abstract: An exhaust system that processes exhaust generated by an engine is provided. The system generally includes a particulate filter (PF) that filters particulates from the exhaust wherein an upstream end of the PF receives exhaust from the engine. A grid of electrically resistive material is applied to an exterior upstream surface of the PF and selectively heats exhaust passing through the grid to initiate combustion of particulates within the PF. A catalyst coating is applied to the PF that increases a temperature of the combustion of the particulates within the PF.
    Type: Grant
    Filed: October 22, 2007
    Date of Patent: July 16, 2013
    Inventors: Eugene V. Gonze, Michael J. Paratore, Jr., Frank Ament
  • Patent number: 8475574
    Abstract: An exhaust treatment system comprises a particulate matter filter, a first heater element, and a second heater element. The particulate matter (PM) filter filters PM from exhaust gas and includes N zones. Each of the N zones includes an inlet area that receives a portion of the exhaust gas. N is an integer greater than one. The first heater element includes a contact area that heats exhaust gas input to an inlet area of a first one of the N zones. The second heater element includes a second contact area that heats exhaust gas input to an inlet area of a second one of the N zones. A ratio of the contact area of the first heater element to the inlet area of the first zone is greater than a ratio of the contact area of the second heater element to the inlet area of the second zone.
    Type: Grant
    Filed: August 5, 2009
    Date of Patent: July 2, 2013
    Inventors: Eugene V. Gonze, Michael J. Paratore, Jr., Garima Bhatia
  • Patent number: 8460625
    Abstract: An exhaust gas purification apparatus for an engine is provided with a filter arranged in an exhaust passage of the engine, and a regeneration control unit for regenerating the filter by burning the particulate matters accumulated in the filter. The control unit may include an over-accumulation state determination unit and a switch. The over-accumulation state determination unit determines over-accumulation of the particulate filter in the filter when the particulate matter is over-accumulated in the filter. The switch switches a regeneration temperature for regenerating the filter between a first regeneration temperature at which a normal regeneration is performed and a second regeneration temperature which is lower than the first regeneration temperature. The control unit is connectable to a command unit when the particular matter is over-accumulated in the filter, so that the switch is forcibly operated toward the second regeneration temperature.
    Type: Grant
    Filed: January 26, 2011
    Date of Patent: June 11, 2013
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Ko Takayanagi, Keisuke Okuda
  • Publication number: 20130074698
    Abstract: Embodiments of the present disclosure relate to microwave filter air purification systems, methods of using the microwave filter air purification systems, microwave absorbing filter packs, methods of degrading a contaminant, and the like.
    Type: Application
    Filed: June 13, 2011
    Publication date: March 28, 2013
    Inventors: Chang-Yu Wu, Wolfgang Sigmund, Chang Yul Cha, Johannes C.M. Marijnissen
  • Patent number: 8372339
    Abstract: The invention discloses a sterilization device (1), to sterilize media, equipment and/or decontamination of waste material, said sterilization device (1) comprising a chamber (2), at least one exhaust line (6) arranged to said chamber (2) and at least one gas generator arranged to said chamber (2), at least two sterile filters (8a, 8b) arranged in series in the exhaust line (6), at least one vacuum means (7) connected to the chamber (2) via said exhaust line (6) and said at least two filters (8a, 8b). At least one heating means (9) is arranged to said exhaust line (6) between said two sterile filters (8a, 8b) in order to vaporize condensate that develops between the filters. Furthermore, it is disclosed a sterilization process for sterilization of media, equipment and/or decontamination of waste material, a vaporizing system (12) of a sterilization device and use of such a vaporizing system (12) in a sterilization device.
    Type: Grant
    Filed: March 1, 2007
    Date of Patent: February 12, 2013
    Assignee: Getinge Sterilization AB
    Inventors: Joakim Larsson, Bjarne Pedersen, Mats-Åke Åhlund, Stefan Nilsson
  • Patent number: 8256060
    Abstract: The present disclosure relates to a pulse cleaner for cleaning a diesel exhaust aftertreatment device. The pulse cleaner includes a cabinet, a diesel exhaust aftertreatment device mount positioned within the cabinet for mounting the diesel exhaust aftertreatment device during pulse cleaning, and a collection filter positioned within the cabinet for collecting material displaced from the diesel exhaust aftertreatment device during cleaning. The pulse cleaner can be equipped with features such as an exhaust aftertreatment device core temperature sensor, an air flow concentrator or an air swirling vane. The pulse cleaner can also include adapters for providing system compatibility with different styles of exhaust aftertreatment devices.
    Type: Grant
    Filed: January 30, 2008
    Date of Patent: September 4, 2012
    Assignee: Donaldson Company, Inc.
    Inventors: Wayne M. Wagner, Mary Joanne Lorenzen, John T. Herman
  • Patent number: 8252093
    Abstract: According to an exemplary embodiment of the present disclosure, a system for removing matter from a filtering device of a work machine includes a gas pressurization assembly. An element of the gas pressurization assembly is removably attachable to a first orifice of the filtering device without removing the filtering device from a work machine to which the filtering device is connected. The system also includes a heat source fluidly connected to the gas pressurization assembly.
    Type: Grant
    Filed: July 29, 2008
    Date of Patent: August 28, 2012
    Inventors: Cheryl Lynn Sellers, David Thaler, Mark T. Grimm, Jeremy Trethewey, Natalie Noel Vanderspiegel, Richard A. Crandell, Dong Fei, Roger A. Hudson, Mark Alan Gasper, Herbert DaCosta, Eric Charles Fluga, Hemant Prasad Mallampalli, Bruce Frazier, Matthew Fletcher
  • Patent number: 8241403
    Abstract: The present invention relates to systems for regenerating a plugged diesel particulate filter (DPF) or catalyzed DPF. In certain embodiments, the system includes a fluid container and pulse valve, a heater, and a blower. Other embodiments include methods of regenerating a plugged DPF by directing a fluid at a first face of a DPF, redirecting the fluid at a second face of the DPF, and in some embodiment, heating the DPF.
    Type: Grant
    Filed: June 8, 2009
    Date of Patent: August 14, 2012
    Assignee: Catalytic Solutions, Inc.
    Inventors: Ted N. Tadrous, Shun Hong Long
  • Patent number: 8205439
    Abstract: A system includes a particulate matter (PM) filter that includes X zones. An electrical heater includes Y heater segments that are associated with respective ones of the X zones. The electrical heater is arranged upstream from and proximate with the PM filter. A valve assembly includes Z sections that are associated with respective ones of the X zones. A control module adjusts flow through each of the Z sections during regeneration of the PM filter via control of the valve assembly. X, Y and Z are integers.
    Type: Grant
    Filed: January 23, 2009
    Date of Patent: June 26, 2012
    Inventors: Eugene V. Gonze, Michael J. Paratore, Jr.
  • Patent number: 8178047
    Abstract: An apparatus, according to one aspect, may include a chromatograph and a bulk acoustic resonator. The chromatograph may include a channel that is defined at least partially in a monolithic substrate. The channel may have an inlet to receive a sample and an outlet. A chromatography material may be included in the channel. The bulk acoustic resonator may have a first electrode and a second electrode that has a chemically functionalized surface. The chemically functionalized surface may be included in a chamber that is defined at least partially in the monolithic substrate and that is coupled with the outlet of the channel. Methods of making and using such apparatus, and systems including such apparatus, are also disclosed.
    Type: Grant
    Filed: March 30, 2010
    Date of Patent: May 15, 2012
    Assignee: Intel Corporation
    Inventors: Li-Peng Wang, Qing Ma
  • Patent number: 8152907
    Abstract: A gas purification apparatus capable of removing fine particles of substantially any size without lowering the efficiency of gas supply. A loader module of a substrate processing apparatus includes a fan filter unit for producing a downward flow of atmospheric air in the internal space of a transfer chamber. The fan filter unit includes a fan for generating an atmospheric air flow, a filter of mesh structure for trapping and removing particles mixed in the atmospheric air flow, an irradiation heater disposed between the fan and the filter, and a high temperature part disposed in the atmospheric air flow and higher in temperature than the filter.
    Type: Grant
    Filed: July 16, 2008
    Date of Patent: April 10, 2012
    Assignee: Tokyo Electron Limited
    Inventor: Tsuyoshi Moriya
  • Patent number: 8105417
    Abstract: A system comprises a particulate matter (PM) filter that comprises an upstream end for receiving exhaust gas, a downstream end and at least one portion. A control module initiates combustion of PM in the PM filter using a heater and selectively adjusts oxygen levels of the exhaust gas to adjust a temperature of combustion adjacent to the at least one portion of the PM filter. A method comprises providing a particulate matter (PM) filter that comprises an upstream end for receiving exhaust gas, a downstream end and at least one portion; initiating combustion of PM in the PM filter using a heater; selectively adjusting oxygen levels of the exhaust gas to adjust a temperature of combustion adjacent to the at least one portion of the PM filter.
    Type: Grant
    Filed: January 25, 2008
    Date of Patent: January 31, 2012
    Inventors: Eugene V. Gonze, Michael J. Paratore, Jr., Garima Bhatia
  • Patent number: 8091353
    Abstract: The present invention has an object to provide an exhaust device for a diesel engine capable of surely burning flammable gas in an exhaust route. In the exhaust device for the diesel engine, liquid fuel (6) is supplied from a liquid-fuel supply source (5) to a gas generator (3). The gas generator (3) converts the liquid fuel (6) to flammable gas (7) and has a flammable-gas flow outlet (9) of the with which an exhaust route (1) is communicated upstream of a diesel-particulate-filter (2). The flammable gas (7) flowed out from the flammable-gas flow outlet (9) is burnt with oxygen in exhaust gas (10) to produce combustion heat. The exhaust gas (10) heated by the thus produced combustion heat can burn the exhaust-gas fine particles remaining at the filter (2). The gas generator (3) is provided with a catalyst chamber (51) which houses a catalyst (4). Catalyst-combustion heat is generated in the catalyst chamber (51) which is arranged along an external periphery of a peripheral wall (1a) of the exhaust route (1).
    Type: Grant
    Filed: March 14, 2008
    Date of Patent: January 10, 2012
    Assignee: Kubota Corporation
    Inventors: Toshio Nakahira, Masahiko Sugimoto, Shuichi Yamada, Katsushi Inoue, Hirozumi Kuwabara
  • Publication number: 20110308522
    Abstract: The present invention provides a filter assembly for filtering a gas stream. The filter assembly including a number of filter elements structured to be disposed in a gas stream. The filter assembly further including a heating element for heating each of the number of filter elements, the heating element being structured to be disposed in the gas stream for directly heating the gas stream as the gas stream passes therethrough.
    Type: Application
    Filed: December 4, 2009
    Publication date: December 22, 2011
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Gardner Kimm, Mabini Arcilla
  • Patent number: 8057581
    Abstract: A system comprises a particulate matter (PM) filter that comprises an upstream end for receiving exhaust gas and a downstream end. A zoned heater is arranged spaced from the upstream end and comprises N zones, where N is an integer greater than one, wherein each of the N zones comprises M sub-zones, where M is an integer greater than one. A control module selectively activates at least a selected one of the N zones to initiate regeneration in downstream portions of the PM filter from the one of the N zones and deactivates non-selected ones of the N zones.
    Type: Grant
    Filed: December 19, 2007
    Date of Patent: November 15, 2011
    Inventors: Eugene V. Gonze, Michael J. Paratore, Jr.
  • Publication number: 20110265651
    Abstract: A high temperature filter and a self-cleaning filtering system for filtering media, such as biomass materials, are provided. The filter and filtering system is particularly useful in the filtration of syngas in a plasma arc gasification process to remove char and other particles of down to a submicron size from the syngas. The filter is formed from a pleated metal mesh material including end caps secured by a high-temperature metallic paste or adhesive, such that the filter is capable of withstanding operating temperatures up to 2000° F. The system includes a backflush unit for injecting cleaning media therein to remove trapped char and other debris from the filter. At least two filtering systems can be placed in parallel so that one system can be cleaned while the other is operating. A method for filtering media is also disclosed.
    Type: Application
    Filed: April 18, 2011
    Publication date: November 3, 2011
    Applicant: TM Industrial Supply, Inc.
    Inventors: Carl A. Steiner, Ricky L. Jackson
  • Publication number: 20110265652
    Abstract: A dust removal method using baghouse filter to process raw syngas from fluidized bed coal gasifier, wherein temperature in the baghouse (300) is maintained at 180° C.-250° C., pressure difference between the gas inlet (130) of the baghouse (300) and the gas outlet (110) of the baghouse (300) is controlled at 1000-5000 Pa, the raw syngas from the fluidized bed coal gasifier enters the gas inlet under the pressure of 0.2-3.0 Mpa. The present method effectively solves the technical problems of condensation and baghouse block due to high steam and ash content in the raw syngas from the fluidized bed coal gasifier and the present method is also applicable to remove dusts from the raw syngas produced by the fluidized bed coal gasifier under the conditions of high water-gas ratio (the water-gas ratio is up to 37%), high dust content (15-100 g/Nm3 dusts) and 0.2-3.0 Mpa pressure. The present invention also discloses a baghouse dust collector and a dense phase pneumatic conveying apparatus for the method.
    Type: Application
    Filed: May 26, 2009
    Publication date: November 3, 2011
    Applicant: Synthesis Engery Systems, Inc
    Inventors: Minghai Gu, Songliang Sun, Guangliang Luo
  • Publication number: 20110259190
    Abstract: A system includes a particulate matter (PM) filter that includes an upstream end for receiving exhaust gas and a downstream end. A zoned resistive heater is arranged spaced from said upstream end and includes N zones, where N is an integer greater than one, wherein each of the N zones includes M sub-zones, where M is an integer greater than or equal to one, and wherein the zoned heater includes an electrically insulating material. A control module selectively activates at least a selected one of the N zones to initiate regeneration in downstream portions of the PM filter from the one of the N zones and deactivates non-selected ones of the N zones.
    Type: Application
    Filed: November 2, 2007
    Publication date: October 27, 2011
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Eugene V. Gonze, Michael J. Paratore, JR., Kevin W. Kirby, Amanda Phelps
  • Patent number: 8034146
    Abstract: The invention provides a filter element which has a reduced initial pressure loss, can reduce an energy cost and can secure a high air flow rate, a filter element which has an elongated gas removing service life and filtering service life while keeping a high gas removing performance and a high dust removing efficiency, a manufacturing method and a method of use of the same. In a filter element (10) in which a pleated composite substrate (11) obtained by lapping or laminating an nonwoven fabric sheet including a fiber constituted by a thermoplastic resin and a gas removal sheet is pleated, and a pleated shape of the pleated composite substrate (11) is held by a shape retaining member (12a), a thickness of the nonwoven fabric sheet is increased at least 5% when heated to 60 degree C.
    Type: Grant
    Filed: August 17, 2007
    Date of Patent: October 11, 2011
    Assignee: Japan Vilene Company, Ltd.
    Inventor: Satoru Kobori
  • Patent number: 7981198
    Abstract: A system includes a particulate matter (PM) filter that includes an upstream end for receiving exhaust gas and a downstream end. A zoned heater is arranged spaced from the upstream end and comprises N zones, where N is an integer greater than one, wherein each of the N zones comprises M sub-zones, where M is an integer greater than or equal to one, and wherein the N zones and the M sub-zones are arranged in P layers, where P is an integer greater than one. A control module selectively activates at least a selected one of the N zones to initiate regeneration in downstream portions of the PM filter from the one of the N zones and deactivates non-selected ones of the N zones.
    Type: Grant
    Filed: January 11, 2008
    Date of Patent: July 19, 2011
    Inventors: Eugene V. Gonze, Mark R. Chapman
  • Patent number: 7976712
    Abstract: An apparatus, system, and method are disclosed for a filter for filtering a dosing fluid in an exhaust aftertreatment system. The filter may comprise a dosing tank configured to contain a dosing fluid, a filter media disposed within the dosing tank, and a support structure supporting the filter media to form a pathway for a flow of dosing fluid. Beneficially, the apparatus, system, and method of the present invention reduce the cost of operation and manufacture of the SCR system.
    Type: Grant
    Filed: October 1, 2007
    Date of Patent: July 12, 2011
    Assignee: Cummins Filtration IP, Inc.
    Inventors: Alain Rocheux, Gary Rickle, Julie Graber, Vikrant Aggarwal
  • Patent number: 7895831
    Abstract: An exhaust emission control system for an internal combustion engine with a filter provided in the exhaust system of the engine, for collecting particulates from exhaust gases. An ECU carries out the post injection for additionally injecting fuel into a combustion chamber of the engine after a combustion stroke of the engine to thereby perform a regeneration operation for regenerating the filter. A vehicle speed sensor detects a travel distance of a vehicle on which the engine is installed, and the ECU calculates a post injection allowable amount such that the post injection allowable amount increases in accordance with increase in the detected travel distance. During execution of the post injection, the amount of fuel injected through the post injection is subtracted from the post injection allowable amount, and when the post injection allowable amount becomes equal to or smaller than a predetermined first threshold value, the post injection is inhibited.
    Type: Grant
    Filed: August 3, 2007
    Date of Patent: March 1, 2011
    Assignee: Honda Motor Co., Ltd.
    Inventors: Isao Chiba, Yoshinori Ishihara, Kouji Okayasu
  • Patent number: 7896956
    Abstract: A filter regeneration apparatus of a coal gasification system having a filter for capturing char (unburned matter) present in exhaust gas at an exhaust gas passage communicating with exhaust gas source including a coal gasification furnace, fills the filter container with inactive gas having oxygen concentration of less than 5 vol. % and heat the filter to a target temperature of 400 to 450° C. and feed ashing gas having oxygen concentration of 5 to 15 vol. %, thereby ashing char in the filter. This method and apparatus achieve ashing of char in a safe manner and shortens the time of regenerating the filter by controlling the oxygen concentration in the ashing gas and the filter temperature constantly to reach preset target values.
    Type: Grant
    Filed: November 30, 2006
    Date of Patent: March 1, 2011
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Soken Takase, Yoshinori Koyama, Osamu Shinada, Yuichiro Kitagawa, Ryouji Takahira, Kazunari Imagama
  • Patent number: 7886529
    Abstract: An exhaust system may include a canister that is disposed downstream from an engine. A particulate filter (PF) is disposed within the canister and filters particulates within an exhaust from the engine. A reducing catalyst is disposed within the canister, is on the PF, and promotes reaction of a liquid reductant in the exhaust after reception by the PF. A heating element is disposed within the canister and heats particulate matter in the PF.
    Type: Grant
    Filed: May 30, 2007
    Date of Patent: February 15, 2011
    Inventors: Eugene V. Gonze, Michael J. Paratore, Jr., Yongsheng He
  • Patent number: 7841171
    Abstract: A method is disclosed for estimating an amount of deposited particulates (PM) in a collector of an internal combustion engine. The method includes estimating the amount of inflow of PM into the collector and estimating a basic amount of decreased PM that flows into the collector and is burned and decreased. The method also includes estimating the amount of ash deposited on the collector. The method further includes correcting the basic amount of decreased PM based on the estimated amount of ash. Moreover, the method includes estimating an amount of deposited PM by a history expression based on the estimated amount of inflow of PM and the corrected amount of decreased PM. A related device is also disclosed.
    Type: Grant
    Filed: November 9, 2006
    Date of Patent: November 30, 2010
    Assignee: Denso Corporation
    Inventors: Shigeto Yahata, Tsukasa Kuboshima, Satoru Nosaka, Kazuharu Tochikawa
  • Publication number: 20100050873
    Abstract: A system for use with an inlet of a gas turbine through which airflow toward the gas turbine proceeds is provided and includes a first stage to remove primary aerosol droplets from the airflow by coalescing the primary aerosol droplets into secondary aerosol droplets, which are larger than the primary aerosol droplets, and to remove solid particulates from the airflow, a second water tight stage, disposed downstream from the first stage, to prevent the secondary aerosol droplets and aqueous solutions of deliquesced particulates, which are not removed by the first stage and which are re-released into the airflow from the first stage, from proceeding along the airflow and to remove solid particulates not removed by the first stage from the airflow, and a third water removal stage, disposed downstream from the second stage, to remove from the airflow the remaining secondary aerosol droplets leaking from the first and second stages.
    Type: Application
    Filed: August 28, 2008
    Publication date: March 4, 2010
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Stephen David Hiner, Rahul Jaikaran Chillar, Bradly Aaron Kippel, Lisa Kamdar Ammann, Jack Thomas Clements, Marcus Carr Walters, Sebastien Cloarec, Marc Malivernay, Liberto Gandia
  • Publication number: 20100018934
    Abstract: A polymer alloy has been developed comprising a polysulfone and a vinyl lactam polymer. The resulting alloy has excellent thermal characteristics and even in the presence of substantial quantities in vinyl lactam polymers, has solvent resistance to both organic and aqueous solvent materials. The materials, when dissolved in solvents, can be spun from a variety of solvents into a variety of useful fiber materials. The resulting fine fiber, microfiber and nanofiber materials have excellent thermal and chemical resistance for a variety of fiber applications. The polymer alloys of the invention can be spun into nanofiber mats that can act as a filtration media and can also be combined into conventional substrate materials for fabrication into filter structures.
    Type: Application
    Filed: October 5, 2009
    Publication date: January 28, 2010
    Applicant: DONALDSON COMPANY, INC.
    Inventors: Ismael Ferrer, Richard S. Cardinal, Veli Kalayci
  • Publication number: 20100000410
    Abstract: An apparatus for removing of traces of toxic substances from exhaust gas, comprising, disposed in sequence from the upstream side in a flow channel of exhaust gas emitted from combustion equipment, a denitration unit including a denitration catalyst layer capable of removing nitrogen oxides from the exhaust gas and capable of oxidizing metallic mercury; an air preheater adapted for heat exchange between air for combustion in the combustion equipment and the exhaust gas; a dust removal unit having a bag filter containing a catalyst for metallic mercury oxidation; and a desulfurization unit for removing sulfur oxide from the exhaust gas. The bag filter may be disposed in advance of the desulfurization unit. Thus, there can be provided an apparatus for removing of traces of toxic substances from exhaust gas that is stable over a prolonged period of time and is highly reliable; and provided a method of operating the same.
    Type: Application
    Filed: July 26, 2006
    Publication date: January 7, 2010
    Applicant: BABCOCK-HITACHI KABUSHIKI KAISHA
    Inventors: Yoshinori Nagai, Toshio Katsube, Isato Morita, Hirofumi Kikkawa, Yasuyoshi Kato
  • Patent number: 7608138
    Abstract: Provided is an apparatus 1 for measuring pressure loss in a filter 2, which apparatus includes filter holding means 3; fluid passing means; flow rate measuring means; pressure loss measuring means; and a flow path 6 which connects the four means such that a fluid can pass between the means. The apparatus further includes flow rate regulating means having a mainstream path 7; a tributary path 8 which is branched from the mainstream path 7 and communicates with the outside; and one or more flow path opening/closing members 9 capable of, in conjunction with the level of the fluid flow rate as measured through the flow rate measuring means, opening or closing the mainstream path 7 or the tributary path 8 such that the flow path opening ratio of each of the paths varies continuously or intermittently. The apparatus achieves reliable and convenient measurement of pressure loss with the flow rate of the fluid which passes through the filter 2 being maintained at a constant level by the flow rate regulating means.
    Type: Grant
    Filed: November 25, 2004
    Date of Patent: October 27, 2009
    Assignee: NGK Insulators, Inc.
    Inventors: Satoshi Sakashita, Mitsuo Takahashi
  • Publication number: 20090229467
    Abstract: A particulate matter (PM) filter includes filter walls having inlet ends and outlet ends. First adjacent pairs of the filter walls define inlet channels. Second adjacent pairs of the filter walls define outlet channels. Outlet end plugs are arranged in the inlet channels adjacent to the output ends. Inlet end plugs arranged in the outlet channels spaced from the inlet ends.
    Type: Application
    Filed: April 21, 2008
    Publication date: September 17, 2009
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Eugene V. Gonze, Frank Ament
  • Patent number: 7527671
    Abstract: A method of making a three-dimensional lattice structure, such as a filter used to remove particulates from a gas stream, where the physical lattice structure is designed utilizing software simulation from pre-defined mass transfer and flow characteristics and the designed lattice structure is fabricated using a free-form fabrication manufacturing technique, where the periodic lattice structure is comprised of individual geometric elements.
    Type: Grant
    Filed: November 14, 2006
    Date of Patent: May 5, 2009
    Assignee: Sandia Corporation
    Inventors: John N. Stuecker, Joseph Cesarano, III, James E. Miller
  • Publication number: 20090095158
    Abstract: A ceramic honeycomb filter having improved thermal shock resistance is comprised of a ceramic honeycomb filter that has a heat absorbing material that undergoes a reversible phase change that absorbs at least in part the heat energy, for example, arising from the combustion of Diesel soot entrapped in the filter.
    Type: Application
    Filed: October 9, 2008
    Publication date: April 16, 2009
    Applicant: Dow Global Technologies Inc.
    Inventors: Robin Ziebarth, Robert T. Nilsson
  • Publication number: 20090071338
    Abstract: A system includes a particulate matter (PM) filter that includes an upstream end for receiving exhaust gas and a downstream end. A zoned heater is arranged spaced from the upstream end and comprises N zones, where N is an integer greater than one, wherein each of the N zones comprises M sub-zones, where M is an integer greater than or equal to one, and wherein the N zones and the M sub-zones are arranged in P layers, where P is an integer greater than one. A control module selectively activates at least a selected one of the N zones to initiate regeneration in downstream portions of the PM filter from the one of the N zones and deactivates non-selected ones of the N zones.
    Type: Application
    Filed: January 11, 2008
    Publication date: March 19, 2009
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Eugene V. Gonze, Mark R. Chapman
  • Patent number: 7410529
    Abstract: According to an exemplary embodiment of the present disclosure, a system for removing matter from a filtering device of a work machine includes a gas pressurization assembly. An element of the gas pressurization assembly is removably attachable to a first orifice of the filtering device without removing the filtering device from a work machine to which the filtering device is connected. The system also includes a heat source fluidly connected to the gas pressurization assembly.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: August 12, 2008
    Assignee: Caterpillar Inc.
    Inventors: Cheryl Lynn Sellers, David Thaler, Mark T. Grimm, Jeremy Trethewey, Natalie Noel Vanderspiegel, Richard A. Crandell, Dong Fei, Roger A. Hudson, Mark Alan Gasper, Herbert DaCosta, Eric Charles Fluga, Hemant Prasad Mallampalli, Bruce Frazier, Matthew Fletcher
  • Patent number: 7384455
    Abstract: According to an exemplary embodiment of the present disclosure, a method of detecting matter within a filtering device includes measuring a metric indicative of a first quantity of matter within the filtering device and removing a portion of the matter from the filtering device. The method also includes measuring a metric indicative of a second quantity of matter remaining within the filtering device.
    Type: Grant
    Filed: October 31, 2005
    Date of Patent: June 10, 2008
    Assignee: Caterpillar Inc.
    Inventors: Cheryl L. Sellers, Dong Fei, Jill R. Akers, Bappaditya Banerjee, Mark A. Gasper, Daniel S. Nordyke, Richard A. Crandell, Orlando Sellers, II, Christie S. Ragle, Ronald Silver, Julie M. Faas, Paul W. Park, Jeremy Trethewey
  • Patent number: 7371266
    Abstract: The present invention is directed to a filter cleaning device, in particular, diesel particulate filters. In one embodiment, the device includes a source of high pressure fluid and a mechanism transport the fluid to a nozzle or nozzles; an actuator for moving the nozzles; a controller with logic for instructing the actuator to automatically move the nozzle or nozzles across the surface of the filter; a collection device and suction device downstream of the filter; and ducting to transport the fluid between parts of the system. In one embodiment, a second collection device is used downstream of the suction device to provide additional particulate removal. There are three methods proposed for providing high pressure cleaning fluid to the filter face: 1) rotating the filter and rotating the jet about an axis outside of the filter; 2) moving a nozzle in two perpendicular directions (i.e., x-y); and 3) rotating a radial nozzle about the central axis of the filter.
    Type: Grant
    Filed: April 10, 2006
    Date of Patent: May 13, 2008
    Inventors: Michael Streichsbier, Richard G. Lemke, Dean Wehrley, Bradley L. Edgar, Marc D. Rumminger
  • Patent number: 7247190
    Abstract: An engine exhaust gas cleaning apparatus is provided to minimize torque shock as during regeneration of an exhaust gas cleaning device. The engine exhaust gas cleaning apparatus comprises a fuel delivery device that delivers fuel to an engine at a lean excess air ratio during normal operation of the engine; a NOx trapping catalytic converter that adsorbs NOx from the exhaust gas during the lean operation; a regeneration control section that adjusts the excess air ratio to a rich target value to regenerate the NOx trapping catalytic converter; a feedback control section that feedback-controls the fuel delivery quantity to hold the excess air ratio at the target value during regeneration; a feedback control restricting section that restricts the feedback control during regeneration until the difference between the target value and the actual excess air ratio is less than a prescribed value.
    Type: Grant
    Filed: July 6, 2004
    Date of Patent: July 24, 2007
    Assignee: Nissan Motor Co., Ltd.
    Inventor: Manabu Miura
  • Patent number: 7185489
    Abstract: A particulate trap has a housing and a plurality of filters disposed within the housing. The particulate trap also has a plurality of dividers fluidly isolating one or more of the plurality of filters into filter divisions. The particulate trap has at least one inlet and at least one outlet individually associated with each filter division, and a valve assembly configured to selectively block a flow of exhaust air through each of the inlets.
    Type: Grant
    Filed: December 24, 2003
    Date of Patent: March 6, 2007
    Assignee: Caterpillar Inc
    Inventors: Owen Charles Kolstad, Kartik Ganesan Iyer, Kerry Allen Delvecchio, Joanna Louise Williams
  • Patent number: 7160355
    Abstract: A method of regenerating at least one diesel particle filter, in which exhaust gas is introduced through a supply line into the at least one diesel particle filter and is discharged from it through a discharge line, while heating of the exhaust gas flowing through the at least one diesel particle filter takes place, a closed circulating air circuit being created through which exhaust gas emerging from the at least one diesel particle filter may be introduced back into the latter.
    Type: Grant
    Filed: November 6, 2002
    Date of Patent: January 9, 2007
    Assignee: Robert Bosch GmbH
    Inventor: Dietmar Steiner
  • Patent number: 7147694
    Abstract: A method for removing a liquid from a gas, comprises passing the gas and the liquid through a network of fibers containing at least one fiber in which a temperature gradient has been induced along at least a portion of the length of the fiber, thereby permitting droplets of the liquid to be captured by the at least one fiber, and wherein the temperature gradient causes migration of the droplets. A method of preventing the fouling of a coalescence filter is also disclosed. The method comprises inducing a temperature gradient along at least a portion of a length of at least one fiber within the filter, wherein the temperature gradient causes migration of liquid droplets captured by the fiber. A coalescence filter medium comprising at least one fiber in which a temperature gradient has been induced along at least a portion of the length of the fiber is also provided.
    Type: Grant
    Filed: January 22, 2001
    Date of Patent: December 12, 2006
    Inventors: Darrell Reneker, Alexander L. Yarin, Wenxia Liu
  • Patent number: 7108739
    Abstract: Particle traps are often used to reduce particulate emissions from internal combustion engines to acceptable levels. In order to maintain the particulate traps, they must be periodically regenerated in order to burn off the trapped particles. Strategies for efficiently regenerating the particle traps have been elusive. The present invention separates the exhaust flow into several flow paths. During regeneration, the flow paths are sequentially partially closed, and the particle traps in each of the flow paths are individually regenerated using electrically conductive filter elements. The present invention can be used to effectively filter particles from any combustion process, especially exhaust from internal combustion engines. The particle trap assembly achieves a relatively low pressure loss and efficient regeneration by supplying an oxidizer via a small cross-flow passage.
    Type: Grant
    Filed: October 15, 2003
    Date of Patent: September 19, 2006
    Assignee: Caterpillar Inc.
    Inventors: Kartik G. Iyer, Cornelius N. Opris, Owen C. Kolstad
  • Patent number: 7083663
    Abstract: Filter devices, suitable for rendering pathogenic microorganisms non-viable and capable of regeneration to serve as filter devices for applications such as diesel engines where combustible particulates are trapped, include at least one porous filter element which is capable of electrically resistive heating to a temperature such that pathogens are rendered non-viable, and/or to a regeneration temperature such that combustible particulates are destroyed.
    Type: Grant
    Filed: October 30, 2003
    Date of Patent: August 1, 2006
    Assignee: The Regents of the University of Michigan
    Inventors: Albert J. Shih, Edward J. Cookson
  • Patent number: 7077888
    Abstract: The invention relates to a device for separating dust from flue gases from combustion plants, especially solid fuel combustion plants, comprising at least one dust filter via which the flue gases are guided, and by means of which the dust from the flue gases can be filtered out as it passes through the dust filter. In order to produce a device which separates dust in a highly efficient manner and which can be operated in a highly reliable manner and be used to heat combustion air for the combustion plant, the at least one dust filter is embodied as a bulk material filter in whose bulk material heat from the flue gases can be collected when the bulk material is cross-flown by the flue gases and by means of whose bulk material heat collected from the flue gases when the combustion air of the combustion plant flows through the bulk material filter can be given off to said combustion air.
    Type: Grant
    Filed: January 9, 2004
    Date of Patent: July 18, 2006
    Assignee: Siemens Aktiengesellschaft
    Inventors: Harald Dichtl, Thomas Hagen, Roland Klaus, Jörg Lengert