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).

  • Publication number: 20130274533
    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: March 14, 2013
    Publication date: October 17, 2013
    Applicant: Chevron U.S.A. Inc.
    Inventors: Moinuddin Ahmed, Huping Luo, Krishniah Parimi, Bong-Kyu Chang, Sara Lindsay
  • Patent number: 8541638
    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: Grant
    Filed: November 26, 2008
    Date of Patent: September 24, 2013
    Assignee: Chevron U.S.A. Inc.
    Inventors: Moinuddin Ahmed, Huping Luo, Krishniah Parimi, Bong-Kyu Chang, Sara Lindsay
  • Patent number: 8524629
    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 16, 2011
    Date of Patent: September 3, 2013
    Assignee: Energia Technologies, Inc.
    Inventors: Thien Duyen Thi Nguyen, Krishniah Parimi
  • Patent number: 8507400
    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: August 13, 2013
    Assignee: Energia Technologies, Inc.
    Inventors: Thien Duyen Thi Nguyen, Krishniah Parimi
  • Publication number: 20130142700
    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: December 1, 2011
    Publication date: June 6, 2013
    Applicant: CHEVRON U.S.A. INC.
    Inventors: Krishniah Parimi, Steven Xuqi Song, Moinuddin Ahmed, Thien Duyen Thi Nguyen
  • Patent number: 8448926
    Abstract: Provided is a method 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, 2010
    Date of Patent: May 28, 2013
    Assignee: Chevron U.S.A. Inc.
    Inventors: Marcus Dutra E Mello, Manuel Lim, Krishniah Parimi, David Brossard
  • Publication number: 20130082125
    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: Application
    Filed: November 27, 2012
    Publication date: April 4, 2013
    Inventors: Zackory S. Akin, Craig R. Boyak, Abdenour Kemoun, Ralph Evan Killen, Krishniah Parimi, Steven Xuqi Song, Steven Alden Souers
  • Publication number: 20130064740
    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: Application
    Filed: October 30, 2012
    Publication date: March 14, 2013
    Inventors: Craig Boyak, Abdenour Kemoun, Ralph Evans Killen, Krishniah Parimi, Steven Xuqi Song
  • Patent number: 8372354
    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: July 19, 2010
    Date of Patent: February 12, 2013
    Assignee: Chevron U.S.A. Inc.
    Inventors: Ralph E. Killen, Craig Boyak, Steven X. Song, Abdenour Kemoun, Steve Souers, Krishniah Parimi, Zackory Akin
  • Publication number: 20130004378
    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: Application
    Filed: September 12, 2012
    Publication date: January 3, 2013
    Applicant: Chevron U.S.A. Inc.
    Inventors: Huping Luo, Moinuddin Ahmed, Krishniah Parimi, Bong-Kyu Chang
  • Publication number: 20120198999
    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: Application
    Filed: June 9, 2011
    Publication date: August 9, 2012
    Applicant: chevron U.S.A. Inc.
    Inventors: Marcus Dutra e Mello, Manuel Lim, Krishniah Parimi, David N. Brossard
  • Patent number: 8236999
    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 16, 2011
    Date of Patent: August 7, 2012
    Assignee: Energia Technologies, Inc.
    Inventors: Krishniah Parimi, Thien Duyen Thi Nguyen
  • Patent number: 8211375
    Abstract: The invention is a fluid distribution device for coupling with a fluid distribution conduit or chimney for improving the distribution of downwardly flowing poly-phase mixture including at least one gas phase and at least one liquid phase, above at least one catalyst bed of granular solid catalytic material. The fluid distribution device for receiving the liquid and gas phases has one or more openings in the top and/or upper portion of its height through which a gas phase can enter and has a gas conduit that opens to a mixing cavity within the device. The fluid distribution device further comprises one or more lateral openings for liquid ingress. The lateral opening or openings allow the liquid to enter a liquid conduit that opens to the internal mixing cavity. The mixing cavity allows intimate contact between the liquid and gas phases. Therefore the flow distribution device of the invention provides improved tolerance for tray out of levelness.
    Type: Grant
    Filed: October 7, 2009
    Date of Patent: July 3, 2012
    Assignee: Chevron U.S.A. Inc.
    Inventors: Krishniah Parimi, Steven X. Song, Ralph E. Killen, Ronald K. Meeker, Steven A. Souers
  • Publication number: 20120157297
    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 16, 2011
    Publication date: June 21, 2012
    Inventors: Thien Duyen Thi NGUYEN, Krishniah Parimi
  • Publication number: 20120157727
    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 16, 2011
    Publication date: June 21, 2012
    Inventors: Krishniah PARIMI, Thien Duyen Thi Nguyen
  • Publication number: 20120156109
    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: March 1, 2012
    Publication date: June 21, 2012
    Inventors: Krishniah PARIMI, Thien Duyen Thi Nguyen
  • Publication number: 20120157299
    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: March 1, 2012
    Publication date: June 21, 2012
    Inventors: Thien Duyen Thi NGUYEN, Krishniah Parimi
  • Patent number: 8202498
    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: July 19, 2010
    Date of Patent: June 19, 2012
    Assignee: Chevron U.S.A. Inc.
    Inventors: Ralph E. Killen, Craig Boyak, Steven X. Song, Abdenour Kemoun, Steve Souers, Krishniah Parimi, Zackory Akin
  • Publication number: 20120014849
    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: Application
    Filed: July 19, 2010
    Publication date: January 19, 2012
    Inventors: Ralph E. Killen, Craig Boyak, Steven X. Song, Abdenour Kemoun, Steve Souers, Krishniah Parimi, Zackory Akin
  • Publication number: 20120014847
    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: Application
    Filed: July 19, 2010
    Publication date: January 19, 2012
    Inventors: Ralph E. Killen, Craig Boyak, Steven X. Song, Abdenour Kemoun, Steve Souers, Krishniah Parimi, Zackory Akin