Patents by Inventor Randall D. Partridge

Randall D. Partridge has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11325111
    Abstract: Catalysts including at least one microporous material (e.g., zeolite), an organosilica material binder, and at least one catalyst metal are provided herein. Methods of making the catalysts, preferably without surfactants and processes of using the catalysts, e.g., for aromatic hydrogenation, are also provided herein.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: May 10, 2022
    Assignee: ExxonMobil Research & Engineering Company
    Inventors: Paul Podsiadlo, Quanchang Li, David C. Calabro, Kiara M. Benitez, Machteld M. W. Mertens, Scott J. Weigel, Doron Levin, Randall D. Partridge
  • Patent number: 11186788
    Abstract: Disclosed are methods and apparatuses for separating a wax product from a hydrocarbon feedstream by a) conducting a hydrocarbon feedstream to a membrane separation zone; b) retrieving at least one retentate product stream from the first side of the membrane element; c) retrieving at least one permeate product stream having a wax phase and an oil phase from a second side of the membrane element, wherein a pour point of the wax phase of the permeate product stream is higher than a pour point of the oil phase of permeate product stream; and d) separating a wax product from the wax phase of the permeate product stream.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: November 30, 2021
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Benjamin A. McCool, Yogesh V. Joshi, Dhaval A. Bhandari, Roberto Garcia, Randall D. Partridge
  • Patent number: 10920636
    Abstract: Systems and methods are provided for performing selective catalytic reduction on engine exhaust using ethanol from the engine fuel as the reducing agent. Fuel from a fuel tank or other fuel source can be passed through a separation module to produce a fuel stream with a reduced ethanol content and an ethanol-enriched fraction. After combustion of fuel under lean conditions, the combustion exhaust can be exposed to a catalyst system in the presence of the ethanol-enriched fraction.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: February 16, 2021
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Brian M. P. Weiss, Shamel Merchant, Randall D. Partridge, Benjamin A. McCool, Ajit B. Dandekar, Herbert W. Barry
  • Patent number: 10900423
    Abstract: Systems and methods are provided for performing on-board separation of a fuel into a higher octane fuel fraction and a lower octane fuel fraction using a membrane under osmosis conditions. By performing the separation under osmosis conditions, the feed for separation can be exposed to the membrane without requiring prior heating. This can avoid the need for having a separate heat exchanger system for heating the feed to the membrane to a desired temperature range. Additionally or alternately, the permeate from the membrane separation can be at a pressure of roughly 100 kPa-a or higher. This can avoid the need for having an eductor to provide a pressure below 100 kPa-a for the permeate side of the membrane. The fuel fractions produced during the membrane separation can then be used as fuel in a dual-fuel spark ignition engine.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: January 26, 2021
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Randall D. Partridge, Benjamin A. McCool, Dhaval A. Bhandari
  • Patent number: 10814288
    Abstract: Gas separation modules and methods for use including an integrated adsorbent and membrane. In certain refining applications, it is paramount to obtain high purity product gases. Adsorbent beds are effective at removing certain contaminants, such as CO2, from gas streams containing product and contaminant constituents to form a product-rich stream. The integrated membrane permits a further separation of products from any unadsorbed contaminant to produce a high purity product, such as hydrogen, stream. The gas separation modules described herein include stacked, radial, and spiral arrangements. Each modules includes a configuration of feed and cross-flow channels for the collection of contaminant gases and/or high purity product gases.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: October 27, 2020
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Narasimhan Sundaram, David C. Calabro, Hans Thomann, Randall D. Partridge
  • Publication number: 20200325406
    Abstract: A molecular separation method can include: passing a deasphalted oil stream through a reactor containing an active substrate, wherein the catalytic active substrate adsorbs heteroatom species from the deasphalted oil stream and produces a pretreated hydrocarbon feed stream essentially free of 4+ ring aromatic molecules (ARC 4+ species), metal species, and heteroatom species; and chromatographically separating with a simulated moving bed apparatus or a true moving bed apparatus (SMB/TMB) the pretreated hydrocarbon feed stream into a saturate fraction and an aromatics fraction.
    Type: Application
    Filed: April 3, 2020
    Publication date: October 15, 2020
    Inventors: Randall D. Partridge, Benjamin A. McCool, Carla S. Pereira, Dhaval A. Bhandari
  • Patent number: 10550050
    Abstract: In a process for separating one or more 3,3?-, 3,4?- and 4,4?-dimethyl biphenyl isomers, a feed comprising the isomers is contacted with a zeolite adsorbent which contains one or more metal cations in the +1 or +2 oxidation states. Separation processes for each of the 3,3?-, 3,4?- and 4,4?-dimethyl biphenyl isomers is provided.
    Type: Grant
    Filed: February 1, 2018
    Date of Patent: February 4, 2020
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Changyub Paek, Michael P. Lanci, Randall D. Partridge, Allen W. Burton, Carla S. Pereira, Benjamin A. McCool
  • Publication number: 20190390126
    Abstract: Disclosed are methods and apparatuses for separating a wax product from a hydrocarbon feedstream by a) conducting a hydrocarbon feedstream to a membrane separation zone; b) retrieving at least one retentate product stream from the first side of the membrane element; c) retrieving at least one permeate product stream having a wax phase and an oil phase from a second side of the membrane element, wherein a pour point of the wax phase of the permeate product stream is higher than a pour point of the oil phase of permeate product stream; and d) separating a wax product from the wax phase of the permeate product stream.
    Type: Application
    Filed: June 21, 2019
    Publication date: December 26, 2019
    Inventors: Benjamin A. McCool, Yogesh V. Joshi, Dhaval A. Bhandari, Roberto Garcia, Randall D. Partridge
  • Patent number: 10486107
    Abstract: Asymmetric membrane structures are provided that are suitable for various types of separations, such as separations by reverse osmosis. Methods for making an asymmetric membrane structure are also provided. The membrane structure can include at least one polymer layer. Pyrolysis can be used to convert the polymer layer to a porous carbon structure with a higher ratio of carbon to hydrogen.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: November 26, 2019
    Assignees: ExxonMobil Research and Engineering Company, Georgia Tech Research Corporation
    Inventors: Benjamin A. McCool, Harry W. Deckman, Ryan P. Lively, Dong-Yeun Koh, Randall D. Partridge
  • Patent number: 10322979
    Abstract: A process for separating dimethyl biphenyl (DMBP) isomers, including contacting a mixture of 3,3?-DMBP, 3,4?-DMBP and 4,4?-DMBP in a first solvent with a 12-member ring zeolite exchanged with potassium or barium, or combinations thereof, and adsorbing the 3,3?-DMBP onto the 12-member ring zeolite, such as by passing the mixture through at least one packed bed of the potassium and/or barium exchanged 12-member ring zeolite.
    Type: Grant
    Filed: February 1, 2018
    Date of Patent: June 18, 2019
    Assignee: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Benjamin A. McCool, Michael P. Lanci, Randall D. Partridge, Carla S. Pereira
  • Publication number: 20190136786
    Abstract: Systems and methods are provided for performing on-board separation of a fuel into a higher octane fuel fraction and a lower octane fuel fraction using a membrane under osmosis conditions. By performing the separation under osmosis conditions, the feed for separation can be exposed to the membrane without requiring prior heating. This can avoid the need for having a separate heat exchanger system for heating the feed to the membrane to a desired temperature range. Additionally or alternately, the permeate from the membrane separation can be at a pressure of roughly 100 kPa-a or higher. This can avoid the need for having an eductor to provide a pressure below 100 kPa-a for the permeate side of the membrane. The fuel fractions produced during the membrane separation can then be used as fuel in a dual-fuel spark ignition engine.
    Type: Application
    Filed: October 29, 2018
    Publication date: May 9, 2019
    Inventors: Randall D. Partridge, Benjamin A. McCool, Dhaval A. Bhandari
  • Publication number: 20190136734
    Abstract: Systems and methods are provided for performing selective catalytic reduction on engine exhaust using ethanol from the engine fuel as the reducing agent. Fuel from a fuel tank or other fuel source can be passed through a separation module to produce a fuel stream with a reduced ethanol content and an ethanol-enriched fraction. After combustion of fuel under lean conditions, the combustion exhaust can be exposed to a catalyst system in the presence of the ethanol-enriched fraction.
    Type: Application
    Filed: October 29, 2018
    Publication date: May 9, 2019
    Inventors: Brian M.P. Weiss, Shamel Merchant, Randall D. Partridge, Benjamin A. McCool, Ajit B. Dandekar, Herbert W. Barry
  • Publication number: 20190105647
    Abstract: Catalysts including at least one microporous material (e.g., zeolite), an organosilica material binder, and at least one catalyst metal are provided herein. Methods of making the catalysts, preferably without surfactants and processes of using the catalysts, e.g., for aromatic hydrogenation, are also provided herein.
    Type: Application
    Filed: December 7, 2018
    Publication date: April 11, 2019
    Inventors: Paul Podsiadlo, Quanchang Li, David C. Calabro, Kiara M. Benitez, Machteld M.W. Mertens, Scott J. Weigel, Doron Levin, Randall D. Partridge
  • Patent number: 10195600
    Abstract: Catalysts including at least one microporous material (e.g., zeolite), an organosilica material binder, and at least one catalyst metal are provided herein. Methods of making the catalysts, preferably without surfactants and processes of using the catalysts, e.g., for aromatic hydrogenation, are also provided herein.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: February 5, 2019
    Assignee: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Paul Podsiadlo, Quanchang Li, David C. Calabro, Kiara M. Benitez, Machteld M. W. Mertens, Scott J. Weigel, Doron Levin, Randall D. Partridge
  • Patent number: 10093597
    Abstract: In a process for separating one or more 3,3?-, 3,4?- and 4,4?-dimethyl biphenyl isomers, a feed comprising the isomers is contacted with an adsorbent containing a zeolite having a largest diffuse along dimension of at least 4 Angstroms. The adsorbents provide selective adsorption of 4,4?-dimethyl biphenyl.
    Type: Grant
    Filed: February 1, 2018
    Date of Patent: October 9, 2018
    Assignee: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Changyub Paek, Michael P. Lanci, Randall D. Partridge, Allen W. Burton, Peter I. Ravikovitch, Sumathy Raman
  • Publication number: 20180222824
    Abstract: A process for separating dimethyl biphenyl (DMBP) isomers, including contacting a mixture of 3,3?-DMBP, 3,4?-DMBP and 4,4?-DMBP in a first solvent with a 12-member ring zeolite exchanged with potassium or barium, or combinations thereof, and adsorbing the 3,3?-DMBP onto the 12-member ring zeolite, such as by passing the mixture through at least one packed bed of the potassium and/or barium exchanged 12-member ring zeolite.
    Type: Application
    Filed: February 1, 2018
    Publication date: August 9, 2018
    Inventors: Benjamin A. McCOOL, Michael P. LANCI, Randall D. PARTRIDGE, Carla S. PEREIRA
  • Publication number: 20180215685
    Abstract: In a process for separating one or more 3,3?-, 3,4?- and 4,4?-dimethyl biphenyl isomers, a feed comprising the isomers is contacted with a zeolite adsorbent which contains one or more metal cations in the +1 or +2 oxidation states. Separation processes for each of the 3,3?-, 3,4?- and 4,4?-dimethyl biphenyl isomers is provided.
    Type: Application
    Filed: February 1, 2018
    Publication date: August 2, 2018
    Inventors: Changyub PAEK, Michael P. LANCI, Randall D. PARTRIDGE, Allen W. BURTON, Carla S. PEREIRA, Benjamin A. McCOOL
  • Patent number: 10022701
    Abstract: Methods for coating a substrate with a coating including an adsorbent material and a binder comprising an organosilica material which is a polymer comprising independent units of Formula [Z3Z4SiCH2]3 (I), wherein each Z3 represents a hydroxyl group, a C1-C4 alkoxy group or an oxygen atom bonded to a silicon atom of another unit or an active site on the substrate and each Z4 represents a hydroxyl group, a C1-C4 alkoxy group, a C1-C4 alkyl group, an oxygen atom bonded to a silicon atom of another unit or an active site on the substrate are provided. Methods of gas separation are also provided.
    Type: Grant
    Filed: December 11, 2015
    Date of Patent: July 17, 2018
    Assignee: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Quanchang Li, Randall D. Partridge
  • Patent number: 10005975
    Abstract: A fuel separation method by which auxiliary fuel is separated from blended gasoline fuel for a flexible fuel vehicle capable of using ethanol-blended gasoline fuel, the method including the following steps (a) and (b): (a) a step in which, when the ethanol concentration is low, the blended gasoline fuel is separated by a polar separating membrane member at a relatively high separation temperature to obtain, at the permeation side of the membrane, a first auxiliary fuel enriched with the aromatic gasoline components and ethanol component, and (b) a step in which, when the ethanol concentration is high, the blended gasoline fuel is separated by a polar separating membrane member at a relatively low second separation temperature to obtain, at the permeation side of the membrane, a second auxiliary fuel enriched with the non-aromatic high-volatile gasoline components.
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: June 26, 2018
    Assignees: Toyota Jidosha Kabushiki Kaisha, Exxonmobil Research and Engineering Company, Corning Incorporated
    Inventors: Yoshihiro Iwashita, Takanori Ueda, Randall D. Partridge, Robert Lucchesi, Paul O. Johnson, George L. Kellogg
  • Publication number: 20180036688
    Abstract: Gas separation modules and methods for use including an integrated adsorbent and membrane. In certain refining applications, it is paramount to obtain high purity product gases. Adsorbent beds are effective at removing certain contaminants, such as CO2, from gas streams containing product and contaminant constituents to form a product-rich stream. The integrated membrane permits a further separation of products from any unadsorbed contaminant to produce a high purity product, such as hydrogen, stream. The gas separation modules described herein include stacked, radial, and spiral arrangements. Each modules includes a configuration of feed and cross-flow channels for the collection of contaminant gases and/or high purity product gases.
    Type: Application
    Filed: July 19, 2017
    Publication date: February 8, 2018
    Inventors: Narasimhan SUNDARAM, David C. CALABRO, Hans THOMANN, Randall D. PARTRIDGE