Nitrogen Sorbed Patents (Class 95/130)
  • Patent number: 10478768
    Abstract: An exemplary single bed reversing blower adsorption based air separation unit is configured to follow the O2 load placed thereon by adjusting flow rates therethrough and power consumption. At least one and preferably multiple pressure sensors sense O2 pressure within an O2 storage region downstream of an adsorber vessel. These sensed pressures are utilized to generate control signals controlling flow rates at locations upstream of the compressor, such as at a reversible blower and an output compressor. Control loops for the blower and the compressor are independent of each other and have different time constants. Effective following of the O2 load is thus achieved without driving the air separation unit into operational conditions outside of design and also maintaining optimal power consumption for the O2 produced, such that efficiency is maintained over a large turndown ratio.
    Type: Grant
    Filed: October 10, 2017
    Date of Patent: November 19, 2019
    Assignee: Pacific Consolidated Industries, LLC
    Inventors: Javier Lopez, Jason Burns, William K. Goshay, Tarik Naheiri
  • Patent number: 10456732
    Abstract: A method for controlling an adsorption phase of a gas generator, said generator comprising an adsorbent medium capable of selectively adsorbing a first gaseous component from an inlet gas flow comprising a gaseous mixture, and allowing an outlet gas flow mainly comprising a second gaseous component, said method comprising: directing the inlet gas flow through an inlet of said gas generator; measuring the outlet gas flow; determining the concentration of said second gaseous component at the outlet of said vessel; wherein the method further comprises: calculating the capacity of the generator; comparing the measured outlet gas flow with the calculated capacity; maintaining the generator in adsorption phase for a predetermined time interval, ?s; subjecting the generator to a regenerating cycle after said predetermined time interval.
    Type: Grant
    Filed: May 31, 2016
    Date of Patent: October 29, 2019
    Assignee: ATLAS COPCO AIRPOWER, NAAMLOZE VENNOOTSCHAP
    Inventors: Tom Coremans, Joris Van Goethem, Frank Karel R. Van Puyenbroeck
  • Patent number: 10300180
    Abstract: A wound-care system includes a first pump fluidly coupled to an oxygen source. An oxygen concentrator is fluidly coupled to the first pump. A humidification system is fluidly coupled to the oxygen concentrator. A wound dressing is fluidly coupled to the humidification system and to an exudate chamber. A negative-pressure tube fluidly is coupled to the exudate chamber. A first valve is disposed between the first pump and the oxygen concentrator. A second valve is disposed between the oxygen concentrator and the wound dressing. A third valve is disposed in the negative-pressure tube. Selective activation of the first pump, the first valve, the second valve, and the third valve facilitates delivery of at least one of individual, sequential, or simultaneous negative-pressure treatment and oxygen-rich fluid treatment to the wound via the wound dressing.
    Type: Grant
    Filed: October 11, 2017
    Date of Patent: May 28, 2019
    Assignee: ThermoTek, Inc.
    Inventors: Tony Quisenberry, Sam K. McSpadden, Niran Balachandran, Robert K. Lasalle, Thomas C. Anderson, Kathryn Davis
  • Patent number: 10232303
    Abstract: The invention relates to an a sensor system (100) for quantitatively detecting at least one compound in a fluid mixture, said fluid mixture comprising the compound to be detected, wherein the sensor system (100) comprises a sorbent material (102) being capable of sorbing the at least one compound to be detected, wherein the sorbent material (102) undergoes a temperature change when sorbing the at least one compound; at least a first temperature sensor (104) for measuring the temperature of the sorbent material (102); and a control unit (110) being adapted for quantitatively determining the at least one compound to be detected based on the temperature change of the sorbent material (102). Such a sensor system (100) provides an improved measurement especially in the field of oxygen concentrators. The invention further relates to an oxygen concentrator (10) for generating oxygen enriched gas as well as to a method of quantitatively detecting at least one compound in a fluid mixture.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: March 19, 2019
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Paul Van Der Sluis, Achim Gerhard Rolf Koerber, Rainer Hilbig, Wilhelmus Cornelis Keur
  • Patent number: 10016717
    Abstract: A method and systems for adsorbing contaminants from a gas stream are provided herein. The method includes flowing the gas stream into a treating vessel and through a moving bed of adsorbents. The method includes flowing the adsorbents out of the treating vessel and into a fluidized bed of a regenerator. The method includes desorbing the contaminants from the adsorbents in the fluidized bed of the regenerator to form regenerated adsorbents. The method further includes cooling the adsorbents and returning the cooled, regenerated adsorbents to the treating vessel.
    Type: Grant
    Filed: September 14, 2015
    Date of Patent: July 10, 2018
    Assignee: ExxonMobil Upstream Research Company
    Inventors: Dag O. Calafell, P. Scott Northrop
  • Patent number: 9993765
    Abstract: Lightweight, small, portable devices and methods are disclosed that provide oxygen-enriched air using an ultra rapid adsorption cycle based on advanced molecular sieve materials.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: June 12, 2018
    Assignee: SEPARATION DESIGN GROUP LLC
    Inventors: Stephen Douglas Galbraith, David K. Walker, Kenneth J. McGowan, Elise N. DePetris, Judith C. Galbraith
  • Patent number: 9956370
    Abstract: An oxygen concentrator may rely on a pressure swing adsorption process to produce an oxygen enriched gas stream from canisters filled with granules capable of separation of oxygen from an air stream. The adsorption process uses a cyclical pressurization and venting of the canisters to generate an oxygen enriched gas stream. The oxygen concentrator system may include one or more flow restrictors to allow controlled release of oxygen enriched gas between the canisters.
    Type: Grant
    Filed: August 4, 2014
    Date of Patent: May 1, 2018
    Assignee: Inova, Labs, LLC.
    Inventors: William R. Wilkinson, Allan Sten Westersten, J. David Shockley, Jr.
  • Patent number: 9782715
    Abstract: An exemplary single bed reversing blower adsorption based air separation unit is configured to follow the O2 load placed thereon by adjusting flow rates therethrough and power consumption. At least one and preferably multiple pressure sensors sense O2 pressure within an O2 storage region downstream of an adsorber vessel. These sensed pressures are utilized to generate control signals controlling flow rates at locations upstream of the compressor, such as at a reversible blower and an output compressor. Control loops for the blower and the compressor are independent of each other and have different time constants. Effective following of the O2 load is thus achieved without driving the air separation unit into operational conditions outside of design and also maintaining optimal power consumption for the O2 produced, such that efficiency is maintained over a large turndown ratio.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: October 10, 2017
    Assignee: Pacific Consolidated Industries, LLC
    Inventors: Javier Lopez, Jason Burns, William K. Goshay, Tarik Naheiri
  • Patent number: 9717876
    Abstract: Described herein are various embodiments of an oxygen concentrator system that includes a home oxygen concentrator system couplable to a portable oxygen concentrator system.
    Type: Grant
    Filed: September 21, 2015
    Date of Patent: August 1, 2017
    Assignee: Inova Labs, Inc.
    Inventors: William R. Wilkinson, Dragan Nebrigic
  • Patent number: 9687772
    Abstract: The present invention relates to a nitrogen adsorbent having nitrogen selective adsorptivity by including an organic-inorganic hybrid nanoporous material having a coordinatively unsaturated metal site with density of 0.2 mmol/g to 10 mmol/g in a skeleton, surface or pore; and use thereof, such as a device separating nitrogen from a gas mixture containing nitrogen and methane, a pressure swing adsorption separation device and a temperature swing adsorption separation device for separating nitrogen provided, a method for separating nitrogen and methane from a gas mixture containing nitrogen and methane, a device for separating nitrogen, oxygen or argon, a method for separating nitrogen, oxygen or argon from a gas mixture containing nitrogen, oxygen or argon, and a method for preparing nitrogen or high purity inert gas all separated from a gas mixture containing nitrogen and inert gas.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: June 27, 2017
    Assignee: Korea Research Institute of Chemical Technology
    Inventors: Jong-San Chang, Young Kyu Hwang, Ji Woong Yoon, Do-Young Hong, U-Hwang Lee, Sukyung Lee, Kyung Ho Cho, Dong Won Hwang, Youn-Sang Bae, Seung-Joon Lee
  • Patent number: 9682342
    Abstract: This invention concerns a method for recovering carbon monoxide and carbon dioxide from Fischer-Tropsch off-gas by feeding Fischer-Tropsch off-gas through a column comprising an adsorbent bed, and discharging effluent, optionally rinsing the column and the adsorbent bed by feeding carbon dioxide and discharging effluent until at least 60% of the carbon monoxide that was present in the bed is discharged, pressurizing the column and adsorbent bed with carbon dioxide, rinsing the column and the adsorbent bed by feeding carbon dioxide, until at least 60% of the methane and optionally an amount equal to at least 50% of the carbon dioxide present at the commencement of this rinsing step is discharged, rinsing the column and adsorbent bed by feeding a mixture of hydrogen and nitrogen, pressurizing the column and adsorbent bed by feeding a mixture of hydrogen and nitrogen. With this method a feed comprising at least 50 vol % carbon monoxide can be produced.
    Type: Grant
    Filed: December 31, 2013
    Date of Patent: June 20, 2017
    Assignee: SHELL OIL COMPANY
    Inventor: Sivakumar Sadasivan Vijayakumari
  • Patent number: 9669349
    Abstract: A method of separating oxygen from an oxygen-containing fluid stream is disclosed, the method including the step of contacting the oxygen-containing fluid stream with an oxygen-selective zeolite adsorbent comprising at least 90% chabazite, wherein the chabazite is a single phase chabazite having an Si/Al ratio of 1.2 to 1.8. The single phase chabazite may comprise a mixture of at least two types of cations.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: June 6, 2017
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Garret Chi-Ho Lau, Qiao Zhao, Roger Dean Whitley, Erin Marie Sorensen, Charles Gardner Coe, William Jack Casteel, Jr., Geoffrey John Ochs, Christopher Robert Bongo, Marissa Ann Bonanno
  • Patent number: 9663627
    Abstract: Amine groups can be introduced in porous materials by a direct (one pot) or post-synthetic modification (PSM) process on aldehyde groups, and the resulting porous materials have increased gas affinity.
    Type: Grant
    Filed: November 20, 2014
    Date of Patent: May 30, 2017
    Assignee: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Mohamed Eddaoudi, Vincent Guillerm, Lukasz Weselinski, Mohamed H. Alkordi, Mohamed Infas Haja Mohideen, Youssef Belmabkhout
  • Patent number: 9636624
    Abstract: An oxygen generator, including an upper casing, a base and a lower casing, has a large opening on both sides of the base for installing a molecule tube whose upper and lower plugs are inserted and positioned into engaging slots of the upper and lower casings respectively. An air pump is installed at the bottom of the lower casing and has a motor to drive a cam to drive high-pressure air into the molecule tube through a flow channel and the lower plug of the lower casing. High-pressure oxygen produced after the action of the molecular sieve material passes through flow channels inside the upper plug and the upper casing and remains in the oxygen storage tank. During use, high-pressure oxygen is outputted from an oxygen output regulating valve, converted by an oxygen output solenoid valve, and discharged from a locking slot of the upper casing.
    Type: Grant
    Filed: April 29, 2015
    Date of Patent: May 2, 2017
    Inventor: Ta Hai Kao
  • Patent number: 9539534
    Abstract: This invention concerns a method for recovering carbon monoxide and carbon dioxide from Fischer-Tropsch off-gas by feeding Fischer-Tropsch off-gas through a column comprising an adsorbent bed, and discharging effluent, optionally rinsing the column and the adsorbent bed by feeding NG and discharging effluent until at least 60% of the carbon monoxide that was present in the bed is discharged, pressurizing the column and adsorbent bed with NG, rinsing the column and the adsorbent bed by feeding NG until at least 50% of the carbon dioxide present at the commencement of this rinsing step is discharged, rinsing the column and adsorbent bed by feeding a mixture of hydrogen and nitrogen, pressurizing the column and adsorbent bed by feeding a mixture of hydrogen and nitrogen. With this method a feed comprising at least 50 vol % carbon monoxide can be produced. Furthermore, methane and carbon dioxide at a high pressure can be recovered from the Fischer-Tropsch gas. This can be fed to a gasifier or a reformer.
    Type: Grant
    Filed: December 31, 2013
    Date of Patent: January 10, 2017
    Assignee: SHELL OIL COMPANY
    Inventor: Sivakumar Sadasivan Vijayakumari
  • Patent number: 9463434
    Abstract: A system for regenerating an adsorbent in an off-line adsorption chamber including: a heat exchanger configured to exchange heat from a first fluid coming from a compressor and a second fluid, wherein only a portion of the first fluid flows through the heat exchanger when the first fluid is gas; a conduit providing fluid communication between the second fluid exiting the exchanger and an off-line adsorption chamber; an adsorbent in the off-line adsorption chamber; and an outlet to the off-line adsorption chamber configured to outlet the second fluid from the off-line adsorption chamber.
    Type: Grant
    Filed: January 31, 2014
    Date of Patent: October 11, 2016
    Assignee: SPX FLOW TECHNOLOGY USA, INC.
    Inventors: Timothy J. Fox, John E. Thelen
  • Patent number: 9272940
    Abstract: An ion transport membrane, a heat exchanger, and a recuperator are integrated with a float glass manufacturing process. Only feeds of fuel and air are necessary for producing hot oxygen for a melting furnace and a nitrogen-enriched stream to a float bath. The oxygen and nitrogen are produced on-site without requiring cryogenic distillation.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: March 1, 2016
    Assignee: L'Air Liquid Sociétë Anonyme Pour L'Ëtude Et L'Exploitation Des Procedes Georges Claude
    Inventors: Wei Huang, Youssef Joumani, Remi Pierre Tsiava, Bhadra S. Grover
  • Patent number: 9269473
    Abstract: The disclosure relates generally to materials that comprise conductive covalent organic frameworks. The disclosure also relates to materials that are useful to store and separate gas molecules and sensors.
    Type: Grant
    Filed: September 27, 2011
    Date of Patent: February 23, 2016
    Assignee: The Regents of the University of California
    Inventors: Omar M. Yaghi, Shun Wan, Christian J. Doonan, Bo Wang, Hexiang Deng
  • Publication number: 20150104524
    Abstract: Lightweight, small, portable devices and methods are disclosed that provide oxygen-enriched air using an ultra rapid adsorption cycle based on advanced molecular sieve materials.
    Type: Application
    Filed: October 17, 2014
    Publication date: April 16, 2015
    Inventors: Stephen Douglas Galbraith, David K. Walker, Kenneth J. McGowan, Elise N. DePetris, Judith C. Galbraith
  • Patent number: 8999039
    Abstract: The invention relates to membranes, in particular oxygen separation membranes, which enable improved gas separation conditions with respect to cost, price, size, weight, and noise. The membrane, in particular oxygen separation membrane, according to the invention comprises a support layer (28) and a separation layer (30), wherein the separation layer (30) is permeable for oxygen and has a sorptive affinity for at least one other gas, in particular for nitrogen, wherein the membrane (20) is designed such that substantially only the separation layer (30) is heatable by a heating device.
    Type: Grant
    Filed: February 4, 2011
    Date of Patent: April 7, 2015
    Assignee: Koninklijke Philips N.V.
    Inventors: Rainer Hilbig, Joachim Opitz
  • Patent number: 8956441
    Abstract: A method for producing a gas comprising at least 80 vol % carbon monoxide from a Fischer-Tropsch off-gas comprises: (1) feeding Fischer-Tropsch off-gas through a column comprising an adsorbent bed at high pressure and discharging effluent; (2) reducing the pressure in the column and the bed slightly; (3) rinsing the column and the adsorbent bed with methane or a mixture of methane and carbon dioxide; (4) reducing the pressure of the column and adsorbent bed to a low pressure; (5) rinsing the column and adsorbent bed with a mixture of hydrogen and nitrogen; (6) pressurizing the column and adsorbent bed to a high pressure using a mixture of hydrogen and nitrogen. The product stream obtained in step (3) comprising at least 80 vol % carbon monoxide can be sent as feed to a Fischer-Tropsch reaction. In an embodiment, a gas comprising at least 80 vol % hydrogen is also produced.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: February 17, 2015
    Assignee: Shell Oil Company
    Inventors: Justus Theodorus Gerardus Te Braake, Maarten Bracht, Desmond Andrew Bungku, Wouter David Van De Graaf, Xander Linders, Sivakumar Sadasivan Vijayakumari
  • Patent number: 8932386
    Abstract: The present invention relates to an agglomerated zeolite adsorbent containing at least one polymer matrix that is greatly laden with at least one zeolite adsorbent. The invention also relates to the method for preparing such an adsorbent and to the uses thereof, particularly as an adsorbent of moisture, odors, volatile organic components, and the like.
    Type: Grant
    Filed: December 3, 2009
    Date of Patent: January 13, 2015
    Assignee: CECA S.A.
    Inventors: Ludivine Bouvier, Serge Nicolas, Alice Medevielle, Patrick Alex
  • Patent number: 8915248
    Abstract: An oxygen concentrator may rely on a pressure swing adsorption process to produce an oxygen enriched gas stream from canisters filled with granules capable of separation of oxygen from an air stream. The adsorption process uses a cyclical pressurization and venting of the canisters to generate an oxygen enriched gas stream. During venting of the canisters, use of oxygen as a purge gas may improve the efficiency and lifetime of the oxygen concentrator.
    Type: Grant
    Filed: August 25, 2010
    Date of Patent: December 23, 2014
    Assignee: Inova Labs, Inc.
    Inventors: William R. Wilkinson, Allan Sten Westersten, H. David Shockley, Jr.
  • Patent number: 8794237
    Abstract: An oxygen concentrator may rely on a pressure swing adsorption process to produce an oxygen enriched gas stream from canisters filled with granules capable of separation of oxygen from an air stream. The adsorption process uses a cyclical pressurization and venting of the canisters to generate an oxygen enriched gas stream. The oxygen concentrator system may include one or more flow restrictors to allow controlled release of oxygen enriched gas between the canisters.
    Type: Grant
    Filed: August 25, 2010
    Date of Patent: August 5, 2014
    Assignee: Inova Labs, Inc.
    Inventors: William R. Wilkinson, Allan Sten Westersten, H. David Shockley, Jr.
  • Patent number: 8758480
    Abstract: A Pressure Swing Adsorption filtration that separates a first set of particles and a second set of particles to produce a purified gas output can be monitored in real-time. A sentinel component can provide real-time in situ tracking of a parameter associated with the PSA filtration and dynamically adjusts the PSA filtration based upon the real-time tracked parameter. The real-time monitoring of the parameter further enables maintenance of equipment utilized with the PSA filtration as well as equipment down-the-line that utilize the purified gas output.
    Type: Grant
    Filed: September 9, 2011
    Date of Patent: June 24, 2014
    Assignee: Torosoleil, LLC
    Inventors: Robert Wellesley Heston Turnbull, Sunit Srivastava
  • Publication number: 20140157984
    Abstract: Systems and methods are provided for improving separation of gas phase streams using an adsorbent, such as 8-member ring zeolite adsorbents or DDR type zeolite adsorbents. Suitable gas phase streams can include at least one hydrocarbon, such as methane or a hydrocarbon containing at least one saturated carbon-carbon bond, and at least one additional component, such as CO2 or N2. The selectivity of the adsorbent is improved by selectivating the adsorbent with one or more barrier compounds. The presence of the barrier compounds is believed to alter the relative ability of potential adsorbates to enter into and/or move within the pores of the adsorbent.
    Type: Application
    Filed: November 8, 2013
    Publication date: June 12, 2014
    Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Harry W. Deckman, Peter I. Ravikovitch, Preeti Kamakoti, Chris Yoon
  • Publication number: 20140137737
    Abstract: Described herein are various embodiments of an oxygen concentrator system that includes a home oxygen concentrator system couplable to a portable oxygen concentrator system.
    Type: Application
    Filed: October 14, 2013
    Publication date: May 22, 2014
    Applicant: INOVA LABS, INC., A DELAWARE CORPORATION
    Inventors: William R. Wilkinson, Dragan Nebrigic
  • Patent number: 8702841
    Abstract: A portable oxygen concentrator designed for medical use where the usable life of the sieve beds, adsorbers, is monitored and communicated to the user or service provider through a user interface or a transmitted signal. The concentrator is designed so that the beds are easily replaced by the user or a field technician. Preferably PSA cycle operating parameters appropriate to the replaced beds can be easily reset if needed by the user or service provider.
    Type: Grant
    Filed: April 17, 2012
    Date of Patent: April 22, 2014
    Assignee: Inogen, Inc.
    Inventors: Brenton Taylor, Peter Hansen
  • Publication number: 20140060326
    Abstract: The invention relates to an increased efficiency high-capacity pressure and/or temperature swing adsorption process comprising: contacting a feedstream at a rate of more than 75 MSCFD with an adsorbent material under conditions sufficient for the adsorbent material to selectively adsorb at least one of the component gases in the feedstream, so as to form a first effluent; and selectively desorbing the adsorbed gas from the adsorption material, so as to form a second effluent The adsorption module can contain rotary valves both on the feed end and on the product end and a rotational member defining a central rotational axis, with the adsorption bed(s) oriented circumferentially thereto. The adsorption bed walls can be angled, the feed end cross-sectional area of the adsorption bed(s) can be larger than the product end, and/or the feed end rotary valve diameter of the module(s) can be larger than the product end.
    Type: Application
    Filed: September 4, 2012
    Publication date: March 6, 2014
    Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventor: NARASIMHAN SUNDARAM
  • Patent number: 8658120
    Abstract: Disclosed is a non-thermofusible phenol resin powder having an average particle diameter of not more than 20 ?m and a single particle ratio of not less than 0.7. This non-thermofusible phenol resin powder preferably has a chlorine content of not more than 500 ppm. This non-thermofusible phenol resin powder is useful as an organic filler for sealing materials for semiconductors and adhesives for semiconductors. The non-thermofusible phenol resin powder is also useful as a precursor of functional carbon materials such as a molecular sieve carbon and a carbon electrode material.
    Type: Grant
    Filed: February 2, 2012
    Date of Patent: February 25, 2014
    Assignee: Air Water Inc.
    Inventors: Naoto Yoshinaga, Satoshi Ibaraki, Yoshinobu Kodani, Takaomi Ikeda
  • Patent number: 8636838
    Abstract: To provide an oxygen concentrator that can reduce pressure loss when suctioning raw air and that can increase the amount of suctioned raw air by an amount of reduction in pressure loss, and moreover that can reduce noise without significantly changing a basic structure of a compressor. The oxygen concentrator includes: a compressor that has a plurality of suction ports suctioning raw air and that generates compressed air by compressing suctioned raw air; a conduit through which the compressed air is sent; a silencer that has a suction side end introducing the raw air and a discharge side end discharging the raw air, with the silencer being connected with the conduit; and a plurality of connection conduits directly connecting the discharge side end of the silencer and the respective suction ports of the compressor.
    Type: Grant
    Filed: November 29, 2010
    Date of Patent: January 28, 2014
    Assignee: Ikiken Co., Ltd.
    Inventors: Hirofumi Watanabe, Keiichi Asakura
  • Patent number: 8636003
    Abstract: An oxygen supply system is provided for generating oxygen from cabin air in an aircraft. The oxygen supply system exhibits a modular cabin unit with an oxygen port and a decentralized oxygen supply unit with an oxygen outlet, and the decentralized oxygen supply unit is set up in the modular cabin unit. The decentralized oxygen supply unit is set up to generate oxygen-enriched air from the cabin air by means of electrical power, and the oxygen-enriched air can be provided to the oxygen port of the modular cabin unit via the oxygen outlet.
    Type: Grant
    Filed: December 2, 2008
    Date of Patent: January 28, 2014
    Assignee: Airbus Operations GmbH
    Inventors: Walter Deutscher, Thomas Vogt, Robertino Kolarski, Dorothee Lang
  • Patent number: 8623118
    Abstract: A cyclic adsorption process is provided, the process containing one or more adsorber vessels undergoing the steps of at least pressurization and depressurization and driven by one or more variable speed centrifugal machines operating under acceleration and deceleration conditions and adjusted to the steps, vessel size, and process conditions employed, wherein the process cycle time is greater than the ratio of the change in inertia, defined the maximum energy that can be lost during a cycle due to inertia changes, to 0.3 times the total power of the one of more centrifugal machines that would be consumed in the absence of inertial effects.
    Type: Grant
    Filed: February 8, 2012
    Date of Patent: January 7, 2014
    Assignee: Praxair Technology, Inc.
    Inventors: Paul W. Belanger, Michael S. Manning, Andrew C. Rosinski
  • Patent number: 8617268
    Abstract: An equipment for carrying out a process for producing synthesis gas (S) from biomass, includes a storage unit (1) for biomass and means (3; 5, 6) to carry out pyrolysis and combustion of the biomass. The equipment further includes first or second heat exchanging means (7, 9; 15) to receive outgoing gases (CO2, N2 and H2O) from the means (3; 5, 6) to carry out pyrolysis and combustion of the biomass, a gas purification unit (10) to receive the outgoing gases (CO2, N2 and H2O) that are cooled in the first or second heat exchanging means (7, 9; 15), means (11) to supply a process gas (P) from the gas purification unit (10) to the first heat exchanging means (7, 9), and a reduction shaft (12) to carry out reduction of the process gas (P) discharged from the first heat exchanging means (7, 9).
    Type: Grant
    Filed: November 8, 2012
    Date of Patent: December 31, 2013
    Assignee: Cortus AB
    Inventor: Rolf Ljunggren
  • Patent number: 8603228
    Abstract: Described herein are various embodiments of an oxygen concentrator system In some embodiment, an oxygen concentrator system includes improved charging and battery control circuits.
    Type: Grant
    Filed: September 7, 2010
    Date of Patent: December 10, 2013
    Assignee: Inova Labs, Inc.
    Inventors: William R. Wilkinson, Allan Sten Westersten, Alaa Hassan
  • Patent number: 8597408
    Abstract: An apparatus for separation of gases from ambient air that has at least one separation column with an inlet at a first end and an outlet at a second end, a buffer column having a single inlet at a first end, a vacuum pump, and a valve system that connects the vacuum pump to the outlet at the first end of the separation column, and that connects the outlet at the second end of separation column to the single inlet at the first end of the buffer column.
    Type: Grant
    Filed: October 15, 2012
    Date of Patent: December 3, 2013
    Assignee: Vbox, Incorporated
    Inventors: Nicholas P. Van Brunt, Theodore W. Jagger, Perry B. Lonnes, John A. Kivisto
  • Patent number: 8557025
    Abstract: An arrangement for generating oxygen in a facility is described, which arrangement has at least one unit for generating medical air (V, R), a vacuum system (VS), and a PSA unit (A), which serves to generate an oxygen product stream. According to the invention, the PSA unit (A) and the vacuum system (VS) are interconnected in such a way that the adsorber or adsorbers of the PSA unit (A) can be regenerated by means of the vacuum system (VS), and/or the unit for generating medical air (V, R) is connected to the PSA unit (A) in such a way that at least a subsidiary stream (2) of the generated medical air is delivered as feed gas to the PSA unit (A).
    Type: Grant
    Filed: March 15, 2011
    Date of Patent: October 15, 2013
    Assignee: Linde AG
    Inventors: Matthias Grahl, Philippe Sage, Alfred Bolkart, Paul Leitgeb
  • Patent number: 8540802
    Abstract: The disclosure relates generally to a gas-separation system for separating one or more components from a multi-component gas using Zeolitic imidazolate or imidazolate-derived framework.
    Type: Grant
    Filed: May 9, 2008
    Date of Patent: September 24, 2013
    Assignee: The Regents of the University of California
    Inventors: Omar M. Yaghi, Hideki Hayashi, Rahul Banerjee
  • Patent number: 8535423
    Abstract: Methods of purifying hydrogen-containing materials are described. The methods may include the steps of providing a purifier material comprising silica. The silica may be heated at temperature of about 100° C. or more in a dry atmosphere to form activated silica. The activated silica may be contacted with a starting hydrogen-containing material, where the activated silica reduces a concentration of one or more impurity from the starting hydrogen-containing material to form the purified hydrogen-containing material, and where the activated silica does not decompose the purified hydrogen-containing material.
    Type: Grant
    Filed: August 30, 2012
    Date of Patent: September 17, 2013
    Assignee: Matheson Tri-Gas, Inc.
    Inventors: Tadaharu Watanabe, Mark Raynor, Ade Lau, Hirotaka Mangyo
  • Publication number: 20130216627
    Abstract: Lightweight, small, portable devices and methods are disclosed that provide oxygen-enriched air using an ultra rapid adsorption cycle based on advanced molecular sieve materials.
    Type: Application
    Filed: August 15, 2012
    Publication date: August 22, 2013
    Inventors: Stephen Douglas Galbraith, David K. Walker, Kenneth J. McGowan, Elise N. DePetris, Judith C. Galbraith
  • Patent number: 8500879
    Abstract: The present invention provides oxygen concentrators which achieve reliable pressure control in the oxygen columns with reduced number of components for pressure control in the oxygen columns, and also easy maintenance and reduced power consumption. PSA, PVSA, or VSA oxygen concentrator consisting of oxygen concentration columns BF1 and BF2, pressure control means for adjusting pressure in the oxygen concentration columns, and oxygen tank T for storing concentrated oxygen, comprises mechanical flow control means SC1 which regulates flow from the oxygen tank to the oxygen concentration columns. Pressures in the oxygen concentration columns BF1 and BF2 are kept within a predetermined range by the function of mechanical flow control means SC1 placed in between the oxygen concentration columns and the oxygen tank.
    Type: Grant
    Filed: March 14, 2011
    Date of Patent: August 6, 2013
    Assignee: Metran Co., Ltd.
    Inventors: Tran Ngoc Phuc, Shinichi Nakane
  • Patent number: 8500850
    Abstract: The present invention relates to a process for the separation of gases which comprises putting a mixture of gases in contact with a zeolite of the ESV type to obtain the selective adsorption of at least one of the gases forming the gaseous mixture. The present invention also relates to particular zeolitic compositions suitable as adsorbents.
    Type: Grant
    Filed: June 19, 2007
    Date of Patent: August 6, 2013
    Assignee: ENI S.p.A.
    Inventors: Angela Carati, Caterina Rizzo, Marco Tagliabue, Luciano Cosimo Carluccio, Cristina Flego, Liberato Giampaolo Ciccarelli
  • Patent number: 8496738
    Abstract: A mixed gas is separated with collection of at least one constituent gas. An inlet leads to a blower or other gas compression element through a valve. This blower feeds a chamber which contains media which selectively adsorbs the constituent gas to be collected, such as nitrogen from air. An exhaust from the chamber leads to an exhaust through a check valve. The blower can be reversed after nitrogen has been adsorbed within the chamber to desorb nitrogen and deliver nitrogen back through the blower. The inlet valve is closed after blower reversing and a separate diversion pathway is opened so that nitrogen is delivered from the blower to a nitrogen collection region. A variant system also includes an oxygen collection region on a side of the chamber opposite the blower for collection of both nitrogen and oxygen separated from air simultaneously, or collection of other constituent gases.
    Type: Grant
    Filed: January 27, 2011
    Date of Patent: July 30, 2013
    Assignee: Pacific Consolidated Industries, Inc.
    Inventors: Tarik Naheiri, Steve Schellhase, Javier Lopez, James Yang
  • Publication number: 20130139686
    Abstract: A system and method for systematically generating potential metal-organic framework (MOFs) structures given an input library of building blocks is provided herein. One or more material properties of the potential MOFs are evaluated using computational simulations. A range of material properties (surface area, pore volume, pore size distribution, powder x-ray diffraction pattern, methane adsorption capability, and the like) can be estimated, and in doing so, illuminate unidentified structure-property relationships that may only have been recognized by taking a global view of MOF structures. In addition to identifying structure-property relationships, this systematic approach to identify the MOFs of interest is used to identify one or more MOFs that may be useful for high pressure methane storage.
    Type: Application
    Filed: July 6, 2012
    Publication date: June 6, 2013
    Applicant: Northwestern University
    Inventors: CHRISTOPHER E. WILMER, Michael Leaf, Randall Q. Snurr, Omar K. Farha, Joseph T. Hupp
  • Publication number: 20130108531
    Abstract: The present invention is directed toward a method for purifying a natural gas stream comprising: 1) removing the bulk of CO2 by at least one non-membrane gas separation means; and 2) removing oxygen and other impurities by at least one additional gas separation means, wherein the final natural gas product has low level of CO2 and oxygen.
    Type: Application
    Filed: October 28, 2011
    Publication date: May 2, 2013
    Applicant: Guild Associates, Inc.
    Inventor: Michael J. Mitariten
  • Patent number: 8424525
    Abstract: A breathing gas supply system for an aircraft includes a plurality of oxygen concentrating apparatus, each of which in use, is operable to supply oxygen enriched gas to a breathing gas supply. Each oxygen concentrating apparatus includes at least two active molecular sieve beds which are operable so that while one sieve bed is adsorbing non-oxygen gas from a pressurized gas supply, the or another bed is being purged of non-oxygen gas by subjecting the bed to lower pressure. Each oxygen concentrating apparatus includes an oxygen enriched gas flow control device which permits the flow of oxygen enriched gas produced by the oxygen concentrating apparatus to the breathing gas supply and permits a restricted flow of oxygen enriched gas from the breathing gas supply to the oxygen concentrating apparatus. Oxygen enriched gas produced by the adsorbing sieve bed flows direct to the bed being purged.
    Type: Grant
    Filed: March 25, 2004
    Date of Patent: April 23, 2013
    Assignee: Honeywell Normalair-Garrett (Holdings) Ltd.
    Inventors: David John Peacey, Kraig Charles Murley
  • Patent number: 8394178
    Abstract: An apparatus for separation of gases from ambient air that has at least one separation column with an inlet at a first end and an outlet at a second end, a buffer column having a single inlet at a first end, a vacuum pump, and a valve system that connects the vacuum pump to the outlet at the first end of the separation column, and that connects the outlet at the second end of separation column to the single inlet at the first end of the buffer column.
    Type: Grant
    Filed: July 20, 2010
    Date of Patent: March 12, 2013
    Assignee: VBox, Incorporated
    Inventors: Nicholas P. Van Brunt, Theodore W. Jagger, Perry B. Lonnes, John A. Kivisto
  • Patent number: 8388735
    Abstract: An adsorbent media composition has a finished media lithium-exchanged zeolite X (LiX) with a finished Li content in a range from 96% to 83%, based on the total cation equivalents in the LiX. The adsorbent media composition is obtained from a slurry comprising water, a LiX precursor having a pre-media production Li content that is greater than the finished media LiX Li content, and another media component material, such as fibers. The water used to produced the media has a specific conductance in a range from 2.2 ?Siemens/cm to 150 ?Siemens/cm. The finished media LiX has a monovalent cation (Na, K, Rb, Cs and combinations thereof) in a range from 0.05% to 3%, based on the total equivalents of exchangeable cations in the finished media LiX.
    Type: Grant
    Filed: September 1, 2009
    Date of Patent: March 5, 2013
    Assignee: UOP LLC
    Inventors: Robert L. Bedard, Evgeny T. Kolev
  • Publication number: 20130047849
    Abstract: Porous bulk materials formed of shape-persistent, non-collapsible, three-dimensional molecular cage building blocks are presented that are useful for a variety of applications including gas separation/storage, sensing, and catalysis.
    Type: Application
    Filed: March 18, 2011
    Publication date: February 28, 2013
    Inventors: Wei Zhang, Richard D. Noble, Yinghua Jin, Bret A. Voss
  • Patent number: 8361204
    Abstract: A vacuum-pressure swing absorption concentrator includes a motor driven compressor having pressure and vacuum heads that are connected to a pressure reservoir and a vacuum reservoir respectively. The pressure and vacuum reservoirs are selectively and alternately interconnected in sequence through a main valve to a pair of nitrogen filtering sieve beds. A controller operates the valve to alternately and cyclically interconnect the sieve beds to the pressure and vacuum reservoirs respectively. During each cycle, a respective bed is pressurized and enriched oxygen is produced and delivered to a tank for use by a patient. At the same time, the other bed is evacuated through the vacuum reservoir. A crossover valve delivers oxygen from a pressurized bed to an evacuated bed to facilitate purging of impurities previously collected in the evacuated bed.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: January 29, 2013
    Assignee: O2 Concepts, LLC
    Inventor: Stuart Bassine