Concentration Sensed Patents (Class 95/8)
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Publication number: 20100101409Abstract: A particulate filter control system and method for controlling the same is disclosed. The particulate filter load monitoring system may transmit radio frequency signals through the resonant cavity and filter medium across a frequency range sufficient to generate more than one resonant mode. The system may contain additional sensors for monitoring additional exhaust characteristics and parameters. Further, a control unit may be configured to determine the amount of material accumulated in the particulate filter, detect failures and malfunctions of the exhaust after-treatment system and its associated components, and initiate an action based on the amount of material accumulated in the particulate filter, the determination of a system failure or malfunction, or input from one or more exhaust sensors.Type: ApplicationFiled: October 30, 2009Publication date: April 29, 2010Inventors: Leslie Bromberg, Alexander Sappok, Peter Koert
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Patent number: 7704299Abstract: The present invention provides a method of treating a process fluid that includes assembling a modular system, flowing the process fluid through the modular system, the flowing the process fluid through the modular system including degassing the process fluid, neutralizing the process fluid, reducing an amount of one of the group consisting of entrained gases, oil and solids in the process fluid, monitoring and analyzing the process fluid for at least one of the group consisting of engrained gases, oil, and solids, and flowing the process fluid out of the modular system for disposal.Type: GrantFiled: February 22, 2007Date of Patent: April 27, 2010Assignee: M-I LLCInventors: Frank Mueller, Michael A. Freeman, Eric Hand
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Publication number: 20100074817Abstract: The following devices are successively disposed in the following order from an upstream side to a downstream side in an exhaust gas duct of a combustion apparatus: an air preheater, preheating combustion air for use in an exhaust gas treating apparatus; a heat recovery unit, recovering exhaust gas heat at an exit of the air preheater; a precipitator, collecting soot/dust contained in an exhaust gas at an exit of the heat recovery unit; a wet flue gas desulfurizer, removing sulfur oxides contained in the exhaust gas at the exit of the precipitator; and a reheater, heating the exhaust gas at the exit of the wet flue gas desulfurizer. Each of the heat recovery unit and the reheater has a heat exchanger tube, and a circulation line is disposed to connect the heat exchanger tubes. A sulfur trioxide (SO3) removing agent is supplied to the upstream side of the heat recovery unit, and the temperature of the exhaust gas at the exit of the heat recovery unit is adjusted to not more than a dew point of sulfur trioxide.Type: ApplicationFiled: December 24, 2007Publication date: March 25, 2010Applicant: BABCOCK-HITACHI KABUSHIKI KAISHAInventors: Kazuki Kobayashi, Hirofumi Kikkawa, Hiroshi Ishizaka, Goki Sasaki, Hiroyuki Nosaka
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Patent number: 7655065Abstract: A regeneration method for a particulate filter includes estimating a quantity of particulate matter trapped within the particulate filter, comparing the quantity of particulate matter to a predetermined quantity, heating at least a portion of the particulate filter to a combustion temperature of the particulate matter, and introducing hydrocarbon fuel to the particulate filter. The hydrocarbon fuel facilitates combustion of the particulate matter to regenerate the particulate filter.Type: GrantFiled: August 2, 2006Date of Patent: February 2, 2010Assignee: GM Global Technology Operations, Inc.Inventors: Eugene V. Gonze, David B. Brown
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Patent number: 7651621Abstract: Systems and methods to degas fluids are described herein. A fluid degassing treatment system may include a reservoir and/or one or more fluid treatment systems.Type: GrantFiled: April 18, 2007Date of Patent: January 26, 2010Assignee: VRTX Technologies, LLCInventors: Robert L. Kelsey, Qiwei Wang
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Publication number: 20090324816Abstract: Methods for recycling a low permeability gas such as krypton in the consolidation process of optical fiber manufacturing. The low permeability gas is sent to a purification unit or plant before being reutilized in the consolidation process. The low permeability gas can be used to produce holes or voids in a cladding region of an optical fiber preform. Upon drawing the optical preform into an optical fiber, the voids become elongated in the direction of draw.Type: ApplicationFiled: June 27, 2008Publication date: December 31, 2009Inventor: Paul Andrew Chludzinski
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Publication number: 20090293716Abstract: A method for cleaning a vehicle exhaust system filter including a plurality of generally parallel elongate channels comprises introducing liquid into the elongate channels for absorption by particulate matter present in the channels, and rotating the filter such that the rotation causes the wetted particulate matter to move along, and out of, the elongate channels to thereby clean the filter.Type: ApplicationFiled: November 7, 2006Publication date: December 3, 2009Applicant: EMINOX LIMITEDInventor: David Herbert Miles
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Publication number: 20090277325Abstract: An emission treatment system includes a separation device having a vessel that includes an inlet for receiving an emission stream having entrained solid particles. A first outlet from the vessel discharges captured solid particles from the emission stream and a second outlet from the vessel discharges a clean stream having fewer entrained solid particles than the emission stream received into the separation device. A particle collector is fluidly connected with the separation device and includes a collection portion for capturing solid particles from the emission stream.Type: ApplicationFiled: May 7, 2008Publication date: November 12, 2009Inventors: Eric J. Gottung, Bruce H. Easom, Sergei F. Burlatsky, Leo A. Smolensky, Luca Bertuccioli
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Patent number: 7611564Abstract: A process for recovery of n-propyl bromide solvent includes mixing a solvent laden vapor stream with an additive and reclaiming the solvent using a carbon adsorption system. A carbon adsorption system and an additive dispensing system form a system for the recovery of n-propyl bromide. These processes and systems use an additive that includes an acid scavenger and a carrier.Type: GrantFiled: December 22, 2006Date of Patent: November 3, 2009Assignee: Parts Cleaning Technologies LLCInventors: Joe McChesney, James R. Goodrich
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Patent number: 7597742Abstract: The invention provides a process for treating a loaded solvent stream having a time-varying contaminant concentration, the process comprising the steps of: (a) providing a plurality of hold-up tanks; (b) feeding the loaded solvent stream in dependence on its contaminant concentration to one or more of the hold-up tanks and; (c) allowing lowed solvent to flow from the plurality of hold-up tanks to obtain a smoothed loaded solvent stream having a reduced time-varying contaminant concentration. The invention further provides a treating unit comprising a circuit for circulating a solvent stream, which circuit includes a device for smoothing contaminant peak concentrations, said device comprising a plurality of hold-up tanks each hold-up tank having at least one inlet and an outlet equipped with an outlet valve, the device further comprising an inlet distributor allowing the control of solvent flow to one or more of the hold-up tanks.Type: GrantFiled: March 16, 2005Date of Patent: October 6, 2009Assignee: Shell Oil CompanyInventors: Anders Carlsson, Gijsbert Jan Van Heeringen, Thijme Last
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Publication number: 20090165642Abstract: The present invention provides a chromatographic method for eliminating interference from interfering agents, corning from the gas sample itself or from the system material used to perform the impurities measurements, on impurities to be quantified in a gas sample. The method advantageously relies on the use of an additional valve and an additional sample loop particularly arranged in a G. C. system, and also on an additional supporting gas inlet operatively connected to the system through the additional sample loop for providing the system with a supporting gas comprising at least a predetermined portion of a predetermined active gas that will react with the unwanted interfering impurities, if any, or with the column material to cancel out unwanted active sites. Thus, the method of the present invention can advantageously be used in gas chromatographic systems to improve sensitivity thereof by acting on column separation material.Type: ApplicationFiled: March 10, 2006Publication date: July 2, 2009Inventors: Yves Gamache, Andre Fortier
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Patent number: 7537646Abstract: A fuel system includes a fuel deoxygenator for removing oxygen from a liquid fuel. A vaporizer is in fluid communication with the fuel deoxygenator. The vaporizer vaporizes at least a portion of the liquid fuel to produce vaporized fuel. At least a portion of the vaporized fuel pre-mixes with oxidizer to reduce formation of undesirable emissions.Type: GrantFiled: October 11, 2005Date of Patent: May 26, 2009Assignee: United Technologies CorporationInventors: Alexander G Chen, Jeffrey M. Cohen
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Patent number: 7537641Abstract: A process and equipment for treating natural gas produced by a well that has recently been stimulated, and that contains an undesirably high concentration of the fracturing gas used to stimulate the well. The process involves treating the gas by membrane separation, and provides for control of treatment parameters to compensate for the changing concentration of fracturing gas in the produced gas, as well as changes in gas flow rate.Type: GrantFiled: December 2, 2005Date of Patent: May 26, 2009Assignee: Membrane Technology and Research, Inc.Inventors: Kaaeid A. Lokhandwala, Ankur Jariwala
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Publication number: 20090101006Abstract: A water deaerating system and method are provided. The first end of an open-ended conduit is placed beneath the surface of a body of oxygen-rich water. The conduit extends into a housing and where the second end of the conduit resides at a location in the housing that is above the surface of the body of oxygen-rich water. A vacuum is applied to a spatial region defined within the housing above the location of the second end of the conduit. The oxygen-rich water is pumped through the conduit and exits the second end of the conduit to enter the spatial region of the housing. The oxygen-rich water descends through the housing due to gravity. The oxygen-rich water's descension is interrupted and the vacuum operates to remove oxygen from the oxygen-rich water so-descending to generate oxygen-depleted water.Type: ApplicationFiled: October 20, 2008Publication date: April 23, 2009Inventors: Claude R. Thompson, William M. Lechler, Neil F. Marshall
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Publication number: 20090095152Abstract: Methods and systems for detecting the presence of a leak in a baghouse bag installed in a baghouse system having at least one compartment. The methods include using a system to acquire electrical signals corresponding to the opacity of gas flow through an outlet of a baghouse system during a start-up of one or more compartments of the baghouse system and comparing the electrical signals corresponding to the opacity of the gas flow with electrical signals characteristic of a leak in at least one of the baghouse bags of the baghouse system.Type: ApplicationFiled: October 11, 2007Publication date: April 16, 2009Applicant: NUCOR CORPORATIONInventors: Steve LINDSEY, Matthew ASHBY
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Publication number: 20090007777Abstract: Method for supplying a high purity gas product comprising providing a first gas stream including a major component and at least one impurity component, determining the concentration of the at least one impurity component, and comparing the concentration so determined with a reference concentration for that component. When the value of the concentration so determined is less than or equal to the reference concentration, the first gas stream is utilized to provide the high purity gas product. When the value of the concentration so determined is greater than the reference concentration, a second gas stream comprising the major component is provided and the first and second gas streams are mixed to yield a mixed gas stream having a concentration of the at least one impurity component that is less than the reference concentration.Type: ApplicationFiled: September 19, 2008Publication date: January 8, 2009Applicant: AIR PRODUCTS AND CHEMICALS, INC.Inventors: Joseph Perry Cohen, Frank Kenneth Schweighardt, David John Farese
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Patent number: 7459008Abstract: A method and system of operating a trans-fill device. At least some of the illustrative embodiments are methods comprising generating an enriched gas stream from atmospheric air, and operating an intensifier which, when provided the enriched gas stream, produces a cylinder fill gas stream. The operating continues in the absence of the enriched gas stream being provided to the intensifier.Type: GrantFiled: March 16, 2006Date of Patent: December 2, 2008Inventors: Alonzo C. Aylsworth, Charles R. Aylsworth, Kevin G. McCulloh
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Patent number: 7455721Abstract: An apparatus for humidifying a gas stream includes a humidifier device having at least one membrane permeable to water vapor. The gas stream and a humid gas stream flow through a humidifier device, being separated from one another by the at least one membrane. The apparatus includes at least one bypass line configured to route at least part of one of the gas stream and the humid gas stream so that it does not come into contact with the membrane. In addition a method for humidifying a gas stream, includes flowing the gas stream through a humidifier having a membrane permeable to water vapor, flowing a humid gas stream through the humidifier separated by the membrane, and routing at least a portion of one of the gas stream and the humid gas stream using a bypass line so that it does not come into contact with the membrane, and varying a quantity of the portion so as to set a predetermined dew point in the gas stream.Type: GrantFiled: July 2, 2003Date of Patent: November 25, 2008Assignee: Daimler AGInventors: Gerhard Berger, Jens Intorp, Gerhard Konrad, Arnold Lamm, Sven Schnetzler
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Publication number: 20080277268Abstract: A method of and system for recirculating a fluid in a particle production system. A reactor produces a reactive particle-gas mixture. A quench chamber mixes a conditioning fluid with the reactive particle-gas mixture, producing a cooled particle-gas mixture that comprises a plurality of precursor material particles and an output fluid. A filter element filters the output fluid, producing a filtered output. A temperature control module controls the temperature of the filtered output, producing a temperature-controlled, filtered output. A content ratio control module modulates the content of the temperature-controlled, filtered output, thereby producing a content-controlled, temperature-controlled, filtered output. A channeling element supplies the content-controlled, temperature-controlled, filtered output to the quench chamber, wherein the content-controlled, filtered output is provided to the quench chamber as the conditioning fluid to be used in cooling the reactive particle-gas mixture.Type: ApplicationFiled: May 8, 2008Publication date: November 13, 2008Inventor: Fredrick P. Layman
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Publication number: 20080244972Abstract: The invention relates to a method for converting gaseous effluents based on hydrogen arising from at least two reactor units R1 and R2 consuming hydrogen. Said effluents have differing degrees of hydrogen purity. The different hydrogenous effluents are treated in a gas separation unit U for said different hydrogenous effluents, whereupon highly pure hydrogen can be obtained and can be used to feed an additional reactor unit R3. The unit U also produces a residual flow having a low degree of hydrogen purity which can be sent to the combustible gas network of the petrochemical installation.Type: ApplicationFiled: October 19, 2004Publication date: October 9, 2008Inventors: Pascal Tromeur, Francois-Xavier Haulle
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Publication number: 20080229924Abstract: The invention provides a process for treating a loaded solvent stream having a time-varying contaminant concentration, the process comprising the steps of: (a) providing a plurality of hold-up tanks; (h) feeding the loaded solvent stream in dependence on its contaminant concentration to one or more of the hold-up tanks and; (c) allowing lowed solvent to flow from the plurality of hold-up tanks to obtain a smoothed loaded solvent stream having a reduced time-varying contaminant concentration. The invention further provides a treating unit comprising a circuit for circulating a solvent stream, which circuit includes a device for smoothing contaminant peak concentrations, said device comprising a plurality of hold-up tanks each hold-up tank having at least one inlet and an outlet equipped with an outlet valve, the device further comprising an inlet distributor allowing the control of solvent flow to one or more of the hold-up tanks.Type: ApplicationFiled: March 16, 2005Publication date: September 25, 2008Applicant: Shell Oil CompanyInventors: Anders Carlsson, Gijsbert Jan Van Heeringen, Thijme Last
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Publication number: 20080216647Abstract: The method for salon air purifying comprises the following steps: (a) categorizing contaminants generated in the salon; (b) selecting air purifiers such that each air purifier is most effective in capturing a specific category of contaminants; (c) detecting which category of contaminants is being generated; (d) activating the air purifier that would most effectively capture the specific contaminants being generated and deactivate other air purifier(s) if not needed. Applying the aforementioned method, the apparatus for salon air purification comprises: (a) detectors to detect which category of contaminants are being generated, (b) two different air purifiers: one for capturing chemical fumes and the other for capturing filing dust and (c) a controller to receive the detectors' data, to activate air purifier only when airborne contaminants are present and to select which air purifier to activate based on the detectors' data.Type: ApplicationFiled: March 7, 2008Publication date: September 11, 2008Inventor: Trungnhan Phan
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Publication number: 20080196367Abstract: An apparatus for detecting and removing airborne impurities within an enclosed chamber is provided according to an embodiment of the invention. The enclosed chamber includes a chamber housing and an opening in the chamber housing for introducing airborne impurities. The enclosed chamber also includes a meter for detecting the airborne impurity level within the enclosed chamber. At least one air cleaner located within the chamber housing is provided for removal of airborne impurities.Type: ApplicationFiled: February 19, 2007Publication date: August 21, 2008Applicant: Oreck Holdings, LLCInventors: Frank Ventorina Ryder, Shane Perry Cohen
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Patent number: 7410524Abstract: A process to purify biogases (i.e., landfill gas and municipal digester gas), to enable such biogases to be utilized to generate electricity and heat. Biogases from these sources generally include small amounts of organosilicons (which are particularly harmful to power generation equipment, and especially harmful to micro-turbines, reciprocating internal combustion engines, and large turbines), and halogenated chemical species (which can foul expensive emission catalysts). A fluidized media bed reactor is configured to concentrate offending organics, and is coupled with another reactor vessel configured to strip the offending organics off saturated media with a hot inert gas. The removed organics are further concentrated into an inert gas stream that is conveyed to a small flare for greater than 99% destruction. The energy required to strip the organics from the spent media, and to energize the flare, is generated by the combustion of a small quantity of the purified biogas.Type: GrantFiled: September 21, 2005Date of Patent: August 12, 2008Inventors: Lowell E. Howard, Paul M. Tower, Jeffrey V. Wetzel
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Patent number: 7402192Abstract: The invention concerns a method characterised in that it consists in: determining online at least an ultraviolet spectrum portion of at least one of the compounds present in one or the other of the waste water feeding circuits (7, 13) or of the column (8) waste water output (16); qualitatively and quantitatively determining, by mathematical processing of the measured intensity levels, at least a contaminant present in the samples; on the basis of the results obtained and by comparing with pre-defined setpoint values, in restoring said data in the form of electric signals, which control the waste water supply and the stripping column water vapour flow rates.Type: GrantFiled: November 30, 2001Date of Patent: July 22, 2008Assignee: Total Fina Elf FranceInventors: Jean-François Buisson, Frédéric Pouly
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Patent number: 7393380Abstract: A method for guaranteeing at least one characteristic of a fluid used for producing food products. This method utilizes a system for piping and delivering the fluid, combined with means for producing the products, in order to use the fluid for producing the products; the measuring a value of the characteristic; the comparing the measured value with a predetermined threshold value; the act of executing an action if the measured value departs from the threshold value; the combining the measured value with first information for identifying at least one product; and then the storing the associated value and the associated information.Type: GrantFiled: December 4, 2002Date of Patent: July 1, 2008Assignee: L'Air Liquide, Societe Anonyme A Directoire et Conseil de Surveillance pour l'Etude et l'Exploitation des Procedes Georges ClaudeInventors: Jean-François Vie, Henry Ledon, Philippe Girardon, Christel Girault
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Patent number: 7393381Abstract: A plurality of different layers of filter media are used to remove siloxanes from a gas stream. Based on an analysis of the specific gas stream to be filtered, a filter media having an average pore size enabling the preferential removal of a specific class of contaminants is selected for each different class of contaminants. The layers are arranged in sequential order such that contaminants having a higher molecular weight are preferentially removed by the first layers. Collectively, the layers define a segmented activity gradient that enables each class of contaminants present in the gas stream to be preferentially removed in a different layer, preventing removal competition between different classes of contaminants. Preferable adsorption media exhibit a relatively narrow range of pore sizes. Both inorganic adsorption media and carbon-based adsorption media exhibiting a relatively narrow range of pore sizes can be used.Type: GrantFiled: March 8, 2005Date of Patent: July 1, 2008Assignee: Applied Filter Technology, Inc.Inventors: Paul M. Tower, Jeffrey V. Wetzel
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Publication number: 20080148934Abstract: A process for recovery of n-propyl bromide solvent includes mixing a solvent laden vapor stream with an additive and reclaiming the solvent using a carbon adsorption system. A carbon adsorption system and an additive dispensing system form a system for the recovery of n-propyl bromide. These processes and systems use an additive that includes an acid scavenger and a carrier.Type: ApplicationFiled: December 22, 2006Publication date: June 26, 2008Applicant: PARTS CLEANING TECHNOLOGIES LLCInventors: Joe McChesney, James R. Goodrich
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Patent number: 7354473Abstract: A combined building air-conditioning unit and NBC protection system, containing an enclosed space housing a building air-conditioning unit and further including a plurality of chambers, a first chamber having an ambient air inlet port, one prefilter and a blower for sucking air through the prefilter, a second chamber having a valve including an open and closed state, receiving air from the blower and accommodating a C-detector and a valve actuator responsible, at least indirectly to, and operable by, the C-detector, and a third chamber housing at least one C-filter and a blower for sucking air from the second chamber via the C-filter into the building when the valve is in its closed state. A method for economically controlling air purity within a protected space is also provided.Type: GrantFiled: August 27, 2003Date of Patent: April 8, 2008Assignee: Beth-El Zikhron-Ya'Aqov Industries Ltd.Inventors: Karl-Hans Fuchs, Albrecht Fuchs, Samuel Koeger
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Patent number: 7323036Abstract: A controller directs the operation of an air pollution control (APC) system having one or more controllable operating parameters and a defined operating limit representing a regulatory limit on an allowed amount of pollutant to be emitted by the APC system. An interface receives data representing a value of a regulatory credit available for emitting less of the pollutant than the regulatory limit on the allowed amount of pollutant. A control processor (i) determines a target set point for each of at least one of the one or more controllable operating parameters, which will maximize the regulatory credits earned, based on the received data and (ii) to directs control of each of the at least one controllable operating parameter based on the determined target set point for that parameter.Type: GrantFiled: August 27, 2004Date of Patent: January 29, 2008Assignee: ALSTOM Technology LtdInventors: Scott A. Boyden, Stephen Piche
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Publication number: 20070295203Abstract: An electrochemical sensor for organic molecules such as ethylene includes an electrochemical cell, gas sample inlet means and means for detecting current produced by the oxidation of the organic molecule at the anode of the cell. The sensor is capable of sensing multiple organic molecules in some embodiments. A voltage is applied to the anode of the cell to provide energy to drive the oxidation reaction and produce a corresponding current. The sensor of the invention can be made as a small, hand-held unit that is capable of real-time detection of various organic species.Type: ApplicationFiled: January 30, 2007Publication date: December 27, 2007Inventors: Allroza Shekarriz, W. Lloyd Allen, Daniel James Faulkner, Christopher M. Ward, Debra M. Gilburena
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Patent number: 7294170Abstract: An apparatus and process for supplying low pressure oxygen-enriched gas to a patient and at a moderate pressure to a radial compressor, whereupon it is compressed and fed to a high pressure storage tank. The oxygen-enriched gas is prioritized so that it is continuously supplied via a patient flow line to the patient.Type: GrantFiled: July 13, 2005Date of Patent: November 13, 2007Assignee: Invacare CorporationInventors: Joseph B. Richey, II, Gerald G. Goertzen
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Patent number: 7276104Abstract: An apparatus and method for producing products using a fluid, which enables one to control the quality of the fluid from the point of production to the point of use, monitored on a microbiological, physical, and chemical basis. At least one sensor for the acquisition of purity information and a system for storing such purity information is included.Type: GrantFiled: December 3, 2002Date of Patent: October 2, 2007Assignee: L'Air Liquide, Societe Anonyme A Directoire et Conseil de Surveillance pour l'Etude et l'Exploitation des Procedes Georges ClaudeInventors: Jean-François Vie, Henry Ledon, Philippe Girardon, Christel Girault
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Patent number: 7273514Abstract: An apparatus and method for filtering particulate from an internal combustion engine by use of monolithic particulate trap systems having porous walls (2c, 24c). The porous walls (2c, 24c) filter the particulate. The filtered particulate on inner surfaces of the porous walls is periodically removed or regenerated via back flow of previously filtered exhaust gas. The back flow is caused by creating a pressure difference across the porous walls. The back flow of the previously filtered exhaust gas is simultaneously or sequentially coupled with high velocity through flow of exhaust gas in the channels. In addition, the particulate trap system can be an adsorber-catalyst particulate trap system for filtering particulate and reducing NOx via an adsorber-catalyst trap systems to achieve the EPA 2007 standards.Type: GrantFiled: July 26, 2005Date of Patent: September 25, 2007Assignee: Illinois Valley Holding CompanyInventors: John M. Bailey, Marianne F. Waldman, legal representative, Donald J. Waldman, deceased
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Patent number: 7273560Abstract: An apparatus for recycling the stripper solutions with higher recycling rate is disclosed. The apparatus includes a stripper condenser; a first buffer tank; a second buffer tank connecting to said stripper condenser by a first pipe and connecting to said first buffer tank by a second pipe; a recycling device connecting to said first buffer tank by a fourth pipe; a first pump mounted on said first pipe; a second pump mounted on said second pipe; a concentration detector mounted in said stripper condenser; and a controller electrically connected to said concentration detector, said flow meter, and said liquid level sensor for receiving the signals therefrom, and electrically connected to said first pump and said second pump for sending on-off messages to said second pump.Type: GrantFiled: December 16, 2003Date of Patent: September 25, 2007Assignee: AU Optronics Corp.Inventors: Ta Sen Su, Chien Chou, Ji Luen Chen
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Publication number: 20070214954Abstract: A method of controlling an apparatus for separating product gas and non product gas from an air supply, the concentration of the product gas produced by the apparatus being variable depending on a control signal from a controller and the efficiency of the apparatus in producing product gas depending upon an environmental parameter, the method including sensing the oxygen concentration in the product gas produced by the apparatus, determining an instantaneous demand for oxygen concentration in the product gas, providing to the controller a process variable signal indicative of the sensed concentration of the oxygen in the product gas, and providing to the controller a demand input signal indicative of the demand, sensing the environmental parameter and providing an environmental parameter input signal to the controller, comparing the process variable signal and the demand signal to generate an error signal indicative of a change in oxygen concentration in the product gas required to match the instantaneous demType: ApplicationFiled: March 14, 2007Publication date: September 20, 2007Inventor: Peter Hedges
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Patent number: 7264648Abstract: A plurality of different layers of filter media are used to remove siloxanes from a gas stream. Based on an analysis of the specific gas stream to be filtered, a filter media having an average pore size enabling the preferential removal of a specific class of contaminants is selected for each different class of contaminants. The layers are arranged in sequential order such that contaminants having a higher molecular weight are preferentially removed by the first layers. Collectively, the layers define a segmented activity gradient that enables each class of contaminants present in the gas stream to be preferentially removed in a different layer, preventing removal competition between different classes of contaminants. A polymorphous graphite is used as the filter media, because that material is available in a range of well-controlled pore sizes, as opposed to conventional activated carbon filter media, which generally exhibits poorly-controlled pore sizes.Type: GrantFiled: June 18, 2004Date of Patent: September 4, 2007Assignee: Applied Filter Technology, Inc.Inventors: Jeffrey V. Wetzel, Paul M. Tower
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Patent number: 7264647Abstract: A device for enriching air with oxygen in an aircraft, and a method for operating the device provides product gas enrichment with oxygen with minimum requirements. An oxygen measurement apparatus analyzing the product gas flow as well as a throughput sensor are provided in combination with a change-over device. A flow connection to an outlet channel is created in a first switch position, and a flow connection to a consumer conduit exists in a second switch position. A device for producing a change-over signal from the first switch position to the second switch position is provided if the determined oxygen output as a product of the product gas flow and the oxygen concentration has reached or exceeded a predefined threshold value.Type: GrantFiled: May 21, 2004Date of Patent: September 4, 2007Assignee: Dräger Aerospace GmbHInventors: Rüdiger Meckes, Wolfgang Rittner, Herbert Meier
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Publication number: 20070202796Abstract: A mine refuge for use in a mine includes a chamber sized and shaped for occupancy by at least one miner and adapted to be substantially sealed. An oxygen supply is installed in the chamber for supplying oxygen to the chamber. A breathable air supply is installed in the chamber for supplying a steady flow of breathable air and for positively pressurizing the chamber to inhibit entry of contaminated mine air into the chamber.Type: ApplicationFiled: January 19, 2007Publication date: August 30, 2007Inventors: William R. Kennedy, John M. Kennedy
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Patent number: 7252700Abstract: A method and mobile system for cleaning dirty gas from a newly stimulated gas well. The entire system is supported on a trailer or other mobile support so that it can be driven from well site to well site for short-term, post-stimulation use only. The system comprises a gas separator, such as a membrane separator. The system also includes a pretreatment assembly for preparing the gas for the gas separator. The pretreatment assembly may include separators, a heater, a guard vessel and a polishing filter. A chiller or heat exchanger cools the treated gas to a marketable temperature. A generator and a hydraulics plant provide power to the system. Each mobile system will be designed to treat gases with widely different operating conditions varying from well to well.Type: GrantFiled: August 16, 2005Date of Patent: August 7, 2007Inventor: Ronald L. Strahan
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Patent number: 7247190Abstract: 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: GrantFiled: July 6, 2004Date of Patent: July 24, 2007Assignee: Nissan Motor Co., Ltd.Inventor: Manabu Miura
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Patent number: 7192463Abstract: An exhaust gas aftertreatment filter system for an internal combustion engine includes an aftertreatment filter disposed in-line with an exhaust gas conduit coupled to an internal combustion engine, a mounting bracket defining a mounting surface and at least one leg extending from the mounting bracket, the at least one leg defining a mounting foot at a distal end thereof with the mounting foot of the at least one leg and the mounting surface of the mounting bracket defining a first air gap therebetween, the mounting foot of the at least one leg secured to the aftertreatment filter, and at least one electrical component secured to the mounting surface of the mounting bracket.Type: GrantFiled: May 27, 2004Date of Patent: March 20, 2007Assignee: Cummins Filtration IP, Inc.Inventors: John V. Shutty, Eric B. Andrews
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Patent number: 7160355Abstract: 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: GrantFiled: November 6, 2002Date of Patent: January 9, 2007Assignee: Robert Bosch GmbHInventor: Dietmar Steiner
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Patent number: 7156895Abstract: A system for cleaning air wherein the air to be cleaned is bubbled up through an aqueous phase and an organic phase. The air is bubbled upwardly through the liquid to take advantage of the weight of the liquid to compress the gas, thereby increasing the solubility of the gas in the liquid. Because of specific gravity, the aqueous phase is generally at the bottom of at least one cylinder or container, and the organic phase is generally on top of the aqueous phase. Gases are removed either continuously or periodically to ensure that there are adequate reagents in the aqueous and organic phases, so that the reagents therein can be replaced as needed. There is no limit to the number of cylinders that can be used, depending upon the impurity and thus the amount of reagents to be used in treating the air.Type: GrantFiled: January 7, 2004Date of Patent: January 2, 2007Inventors: David Rubin, Eyal Rubin
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Patent number: 7150778Abstract: The present invention is a system and method for improving the useful life of sorbent beds, such as activated carbon filter beds. It is known that breakthrough in carbon filter beds first occurs at the low gas velocity regions of the filter bed, i.e., at the filter's edges. A recirculation jacket filter system diverts already filtered air from the downstream side of the filter bed toward the peripheral region of the upstream side of the filter bed so that contaminants near the filter's edges are reduced and filter life is improved.Type: GrantFiled: April 26, 2004Date of Patent: December 19, 2006Assignee: The United States of America as represented by the Secretary of the ArmyInventors: Lyle D. Dauber, David R. Peterson, Carl A. Betten, Thomas S. Thoner, D. Michael Reid
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Patent number: 7144442Abstract: A degassing device capable of regulating an amount of air dissolved in a liquid. A device for measuring amounts of dissolved oxygen measures the amount of oxygen dissolved in one of a coating liquid which has yet to be degassed, and is to be fed to a film degassing device, and a coating liquid which has been degassed and discharged from the film degassing device. Based on measured results, a control unit regulates the degree of opening of a vacuum valve so as to change the degree of degassing performed by the film degassing device, thereby suppressing fluctuations in an amount of oxygen dissolved in the coating liquid. A load never constantly acts on the film all the time, the film life can accordingly be extended, thus resulting in reductions in running costs.Type: GrantFiled: February 13, 2004Date of Patent: December 5, 2006Assignee: Fuji Photo Film Co., Ltd.Inventor: Kenji Hayashi
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Patent number: 7101420Abstract: Self cleaning air filtration machine and a method for using same comprising; a filter with a motor driven belt or disk or counter rotating disks that are perforated, a spray bar, a recirculation pump and supply line, a wet tank, a ultrasonic transducer, ultraviolet submersible bulbs, a water fill port, a liquid level sensor, a liquid and sediment drain port, and a power source. A preferred embodiment includes a subsonic transducer on the wet tank. A preferred embodiment includes a air diffuser, a toxic and noxious gas detection and recognition and radiation detection with automatic safety shut down and audible and visual alarm, a ultraviolet saturation chamber. A preferred embodiment includes a secondary wet filter, a secondary air diffuser, a secondary ultraviolet saturation chamber. A preferred embodiment includes a inline dryer assembly.Type: GrantFiled: February 23, 2004Date of Patent: September 5, 2006Inventors: Adria Valley Anne Nelson Ellis, Rob Nelson
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Patent number: 7097689Abstract: A process and system for purifying an impure gas to produce a purified gas in a gas purification system and protecting the system from damage by a) passing a portion of a first gas stream into a reactor vessel, which exits as a second purified gas stream; b) combining a portion of the second purified gas stream with another portion of the first gas stream to form a combined gas stream; and c) passing the combined gas stream into a sensing device to regulate the flow of the first and second gas streams into the reactor vessel.Type: GrantFiled: June 20, 2002Date of Patent: August 29, 2006Assignee: Praxair Technology, Inc.Inventors: John Fredric Billingham, Jerry Michael Mahl
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Patent number: 7081154Abstract: A device for detecting a failure of a filter used to clean a gas stream, in particular an exhaust gas stream, of soot particulates, including a chamber which is insertable into the gas stream to be cleaned in addition to the filter and which is at least partially closed by a filter body and has at least one opening through which gas entering the chamber through the filter body can exit the chamber, at least one gas sensor for determining the concentration of at least one component of the gas to be cleaned being arranged in the chamber, and at least one second gas sensor for determining the concentration of the at least one component of the gas to be cleaned being arranged outside the chamber.Type: GrantFiled: January 30, 2003Date of Patent: July 25, 2006Assignee: Robert Bosch GmbHInventors: Thomas Schulte, Bernd Schumann
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Patent number: 7077884Abstract: A hydrogen sulfide scrubber includes first and second scrubber tanks with scrubber media contained therein. Scrubbing solution circulators each include a dispenser for dispensing scrubbing solution into contact with the scrubber media, a sump for collecting the scrubbing solution after contact with the scrubber media, and a circulating pump for circulating the scrubbing solution from the sump back to the dispenser after contact with the scrubber media. A polymeric amine supply is provided for supplying a polymeric amine to the scrubbing solution in the second tank. The scrubbing solution in the first tank may be charged with the polymeric amine by a charging line extending from the second tank to the first tank. In other embodiments, a regenerative blower and associated nozzle may be used to generate a scrubbing solution mist in the space beneath the scrubber media and above the sump.Type: GrantFiled: June 9, 2004Date of Patent: July 18, 2006Assignee: Precision Control Technology, Inc.Inventors: Jerry M. Davis, James E. Cheshire