Patents by Inventor Krishniah Parimi

Krishniah Parimi 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: 10173194
    Abstract: We provide systems for ionic liquid catalyzed hydrocarbon conversion that comprise a modular reactor comprising a plurality of mixer modules. The mixer modules may be arranged in series. One or more feed modules are disposed between the mixer modules. Such systems may be used for ionic liquid catalyzed alkylation reactions. Processes for ionic liquid catalyzed hydrocarbon conversion are also disclosed.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: January 8, 2019
    Assignee: Chevron U.S.A. Inc.
    Inventors: Huping Luo, Arthur William Etchells, III, Donald Henry Mohr, Hye Kyung Cho Timken, Moinudden Ahmed, Krishniah Parimi, Bong Kyu Chang, Michael John Girgis
  • Patent number: 9796642
    Abstract: Systems and apparatus for ionic liquid catalyzed hydrocarbon conversion, such as alkylation, using vaporization to remove reaction heat from an ionic liquid reactor and to provide mixing therein, wherein hydrocarbon vapors are withdrawn from the ionic liquid reactor and the withdrawn hydrocarbon vapor is recovered by a hydrocarbon vapor recovery unit in fluid communication with the ionic liquid reactor for recycling condensed hydrocarbons to the ionic liquid reactor. Processes for ionic liquid catalyzed alkylation are also disclosed.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: October 24, 2017
    Assignee: Chevron U.S.A. Inc.
    Inventors: Donald Henry Mohr, Huping Luo, Clifford Michael Lowe, Hye Kyung Cho Timken, Krishniah Parimi, Michael John Girgis, Bong-Kyu Chang
  • Publication number: 20170197195
    Abstract: We provide systems for ionic liquid catalyzed hydrocarbon conversion that comprise a modular reactor comprising a plurality of mixer modules. The mixer modules may be arranged in series. One or more feed modules are disposed between the mixer modules. Such systems may be used for ionic liquid catalyzed alkylation reactions. Processes for ionic liquid catalyzed hydrocarbon conversion are also disclosed.
    Type: Application
    Filed: March 13, 2017
    Publication date: July 13, 2017
    Inventors: Huping Luo, Arthur William Etchells, III, Donald Henry Mohr, Hye Kyung Cho Timken, Moinudden Ahmed, Krishniah Parimi, Bong Kyu Chang, Michael John Girgis
  • Patent number: 9545614
    Abstract: Systems and apparatus for ionic liquid catalyzed hydrocarbon conversion, such as alkylation, using vaporization to remove reaction heat from an ionic liquid reactor and to provide mixing therein, wherein hydrocarbon vapors are withdrawn from the ionic liquid reactor and the withdrawn hydrocarbon vapor is recovered by a hydrocarbon vapor recovery unit in fluid communication with the ionic liquid reactor for recycling condensed hydrocarbons to the ionic liquid reactor. Processes for ionic liquid catalyzed alkylation are also disclosed.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: January 17, 2017
    Assignee: Chevron U.S.A. Inc.
    Inventors: Donald Henry Mohr, Huping Luo, Clifford Michael Lowe, Hye Kyung Cho Timken, Krishniah Parimi, Michael John Girgis, Bong-Kyu Chang
  • Publication number: 20160264494
    Abstract: Systems and apparatus for ionic liquid catalyzed hydrocarbon conversion, such as alkylation, using vaporization to remove reaction heat from an ionic liquid reactor and to provide mixing therein, wherein hydrocarbon vapors are withdrawn from the ionic liquid reactor and the withdrawn hydrocarbon vapor is recovered by a hydrocarbon vapor recovery unit in fluid communication with the ionic liquid reactor for recycling condensed hydrocarbons to the ionic liquid reactor. Processes for ionic liquid catalyzed alkylation are also disclosed.
    Type: Application
    Filed: March 13, 2015
    Publication date: September 15, 2016
    Inventors: Donald Henry Mohr, Huping Luo, Clifford Michael Lowe, Hye Kyung Cho Timken, Krishniah Parimi, Michael John Girgis, Bong-Kyu Chang
  • Publication number: 20160263547
    Abstract: Systems and apparatus for ionic liquid catalyzed hydrocarbon conversion, such as alkylation, using vaporization to remove reaction heat from an ionic liquid reactor and to provide mixing therein, wherein hydrocarbon vapors are withdrawn from the ionic liquid reactor and the withdrawn hydrocarbon vapor is recovered by a hydrocarbon vapor recovery unit in fluid communication with the ionic liquid reactor for recycling condensed hydrocarbons to the ionic liquid reactor. Processes for ionic liquid catalyzed alkylation are also disclosed.
    Type: Application
    Filed: March 13, 2015
    Publication date: September 15, 2016
    Inventors: Donald Henry Mohr, Huping Luo, Clifford Michael Lowe, Hye Kyung Cho Timken, Krishniah Parimi, Michael John Girgis, Bong-Kyu Chang
  • Patent number: 9388093
    Abstract: Systems for ionic liquid catalyzed hydrocarbon conversion comprise a reactor vessel, a mixing device in fluid communication with the reactor vessel, and at least one circulation loop in fluid communication with the reactor vessel and the mixing device. The mixing device may comprise an upper venturi, at least one feed injection component, and a lower venturi. Such systems may be used for ionic liquid catalyzed alkylation reactions. Processes for ionic liquid catalyzed hydrocarbon conversion are also disclosed.
    Type: Grant
    Filed: July 3, 2014
    Date of Patent: July 12, 2016
    Assignee: Chevron U.S.A. Inc.
    Inventors: Huping Luo, Moinuddin Ahmed, Krishniah Parimi, Bong Kyu Chang, Michael John Girgis, Donald Henry Mohr, Hye Kyung Cho Timken
  • Patent number: 9315736
    Abstract: Presented are one or more aspects and/or one or more embodiments of catalysts, methods of preparation of catalyst, methods of deoxygenation, and methods of fuel production.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: April 19, 2016
    Assignee: Energia Technologies, Inc.
    Inventors: Krishniah Parimi, Thien Duyen Thi Nguyen
  • Publication number: 20160001255
    Abstract: Systems and apparatus for ionic liquid catalyzed hydrocarbon conversion may comprise a modular reactor comprising a plurality of mixer modules. The mixer modules may be arranged in series. One or more feed modules may be disposed between the mixer modules. Such systems may be used for ionic liquid catalyzed alkylation reactions. Processes for ionic liquid catalyzed hydrocarbon conversion are also disclosed.
    Type: Application
    Filed: July 3, 2014
    Publication date: January 7, 2016
    Applicant: Chevron U.S.A. Inc.
    Inventors: Huping Luo, Arthur William Etchells, III, Donald Henry Mohr, Hye Kyung Cho Timken, Moinuddin Ahmed, Krishniah Parimi, Bong Kyu Chang, Michael John Girgis
  • Publication number: 20160002125
    Abstract: Systems for ionic liquid catalyzed hydrocarbon conversion comprise a reactor vessel, a mixing device in fluid communication with the reactor vessel, and at least one circulation loop in fluid communication with the reactor vessel and the mixing device. The mixing device may comprise an upper venturi, at least one feed injection component, and a lower venturi. Such systems may be used for ionic liquid catalyzed alkylation reactions. Processes for ionic liquid catalyzed hydrocarbon conversion are also disclosed.
    Type: Application
    Filed: July 3, 2014
    Publication date: January 7, 2016
    Applicant: Chevron U.S.A. Inc.
    Inventors: Huping Luo, Moinuddin Ahmed, Krishniah Parimi, Bong Kyu Chang, Michael John Girgis, Donald Henry Mohr, Hye Kyung Cho Timken
  • Patent number: 9079141
    Abstract: The present invention is directed to a vortex-type mixing device for a down-flow hydroprocessing reactor. In particular, the device improves the effectiveness of an existing mixing volume in mixing the gas phase and liquid phase of two-phase systems. According to the present invention, the mixing device helps create a highly arcuate flow to incoming effluents and a high degree of mixing within a constrained interbed space of a hydroprocessing reactor.
    Type: Grant
    Filed: October 30, 2012
    Date of Patent: July 14, 2015
    Assignee: Chevron U.S.A. Inc.
    Inventors: Craig Boyak, Abdenour Kemoun, Ralph Evans Killen, Krishniah Parimi, Steven Xuqi Song
  • Patent number: 8821805
    Abstract: This application provides a process unit for the production of alkylate gasoline, comprising: a) a nozzle having an orifice that dispenses one or more recirculated streams comprising ionic liquid catalyst into a chamber in the nozzle, b) a conduit for introducing a hydrocarbon feed stream comprising an olefin to the orifice at a close distance from the orifice; and c) a throat connecting the chamber in the nozzle to an alkylation zone. The process unit can have multiple Venturi nozzles.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: September 2, 2014
    Assignee: Chevron U.S.A. Inc.
    Inventors: Huping Luo, Moinuddin Ahmed, Krishniah Parimi, Bong-Kyu Chang
  • Publication number: 20140183275
    Abstract: Systems, apparatus, and methods for distributing a mixed phase fluid to a monolith catalyst bed within a reactor, wherein a mixed phase fluid may be generated by a nozzle tray comprising a plurality of nozzles, the mixed phase fluid may be distributed by the nozzles to a mixed phase distributor system, and the mixed phase fluid may be further distributed by the mixed phase distributor system to a plurality of monolith channels within the reactor.
    Type: Application
    Filed: March 7, 2014
    Publication date: July 3, 2014
    Applicant: CHEVRON U.S.A. INC.
    Inventors: KRISHNIAH PARIMI, STEVEN XUQI SONG, MOINUDDIN AHMED, THIEN DUYEN THI NGUYEN
  • Publication number: 20140183282
    Abstract: Systems, apparatus, and methods for distributing a mixed phase fluid to a monolith catalyst bed within a reactor, wherein a mixed phase fluid may be generated by a nozzle tray comprising a plurality of nozzles, the mixed phase fluid may be distributed by the nozzles to a mixed phase distributor system, and the mixed phase fluid may be further distributed by the mixed phase distributor system to a plurality of monolith channels within the reactor.
    Type: Application
    Filed: March 7, 2014
    Publication date: July 3, 2014
    Applicant: Chevron U.S.A. Inc.
    Inventors: Krishniah Parimi, Steven Xuqi Song, Moinuddin Ahmed, Thien Duyen Thi Nguyen
  • Publication number: 20140148626
    Abstract: Presented are one or more aspects and/or one or more embodiments of catalysts, methods of preparation of catalyst, methods of deoxygenation, and methods of fuel production.
    Type: Application
    Filed: December 2, 2013
    Publication date: May 29, 2014
    Applicant: Energia Technologies, Inc.
    Inventors: Krishniah PARIMI, Then Duyen Thi Nguyen
  • Patent number: 8702071
    Abstract: Provided is a method, liquid distributor and reactor for contacting a gas with a liquid in a rotating packed bed. The method comprises providing a rotating packed bed comprising two sets of rotatable packing rings disposed within a chamber and defining an interior region. The rotating packed bed also comprises at least one liquid distributor with an inlet for accepting a liquid, the inlet in communication with an exit port for infusing the liquid into the interior region. The liquid distributor also comprises at least one gas outlet for accepting gas which has passed through the packed bed and for removing the gas from the interior region. The two sets of rotatable packing rings are caused to rotate. Liquid is infused into the interior region by way of the liquid inlet, and gas is injected through at least one gas inlet into the interior region, with the liquid and gas passing through each of the packing rings in countercurrent flow.
    Type: Grant
    Filed: June 9, 2011
    Date of Patent: April 22, 2014
    Assignee: Chevron U.S.A. Inc.
    Inventors: Marcus Dutra Mello, Manuel Lim, Krishniah Parimi, David Brossard
  • Patent number: 8697015
    Abstract: Systems, apparatus, and methods for distributing a mixed phase fluid to a monolith catalyst bed within a reactor, wherein a mixed phase fluid may be generated by a nozzle tray comprising a plurality of nozzles, the mixed phase fluid may be distributed by the nozzles to a mixed phase distributor system, and the mixed phase fluid may be further distributed by the mixed phase distributor system to a plurality of monolith channels within the reactor.
    Type: Grant
    Filed: December 1, 2011
    Date of Patent: April 15, 2014
    Assignee: Chevron U.S.A. Inc.
    Inventors: Krishniah Parimi, Steven Xuqi Song, Moinuddin Ahmed, Thien Duyen Thi Nguyen
  • Publication number: 20140024874
    Abstract: Disclosed herein are processes in which precipitation permits removal of metal halides (e.g. AlCl3) from ionic liquids. After precipitation, the precipitated metal halides can be physically separated from the bulk ionic liquid. More effective precipitation can be achieved through cooling or the combination of cooling and the provision of metal halide seed crystals. The ionic liquids can be regenerated ionic liquid catalysts, which contain excess metal halides after regeneration. Upon removal of the excess metal halides, they can be reused in processes using ionic liquid catalysts, such as alkylation processes.
    Type: Application
    Filed: September 27, 2013
    Publication date: January 23, 2014
    Applicant: CHEVRON U.S.A. INC.
    Inventors: Moinuddin Ahmed, Huping Luo, Krishniah Parimi, Bong-Kyu Chang, Sara Lindsay
  • Patent number: 8597595
    Abstract: Systems and apparatus for mixing, cooling, and distributing multiphase fluid mixtures within a reactor, wherein reactor internal apparatus of the present invention provides not only improved fluid mixing and distribution to each underlying catalyst bed surface, but also offers other advantages including: decreased mixing tray height; easier maintenance, assembly and disassembly; and decreased amounts of fabrication material. In an embodiment, fluid may be evenly distributed to a catalyst bed from a fluid distribution unit comprising a nozzle tray including a plurality of nozzles, wherein the nozzles include at least one liquid inlet disposed tangentially to an inner surface of the nozzle.
    Type: Grant
    Filed: November 27, 2012
    Date of Patent: December 3, 2013
    Assignee: Chevron U.S.A. Inc.
    Inventors: Zackory S. Akin, Craig R. Boyak, Abdenour Kemoun, Ralph Evan Killen, Krishniah Parimi, Steven Xuqi Song, Steven Alden Souers
  • Patent number: 8597599
    Abstract: Presented are one or more aspects and/or one or more embodiments of catalysts, methods of preparation of catalyst, methods of deoxygenation, and methods of fuel production.
    Type: Grant
    Filed: March 1, 2012
    Date of Patent: December 3, 2013
    Assignee: Energia Technologies, Inc.
    Inventors: Krishniah Parimi, Thien Duyen Thi Nguyen