Patents by Inventor Sai P. Katikaneni

Sai P. Katikaneni 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: 11542159
    Abstract: Embodiments of the present disclosure are directed to a diesel reforming system comprising: a diesel autothermal reformer; a liquid desulfurizer disposed upstream of the diesel autothermal reformer and configured to remove sulfur compounds from diesel fuel prior to feeding to the diesel autothermal reformer; a combustor in communication with the liquid desulfurizer and configured to provide heat for the liquid desulfurizer; a regulating valve in communication with the liquid desulfurizer and the combustor, the regulating valve being configured to control diesel fuel feeds to the liquid desulfurizer and the combustor; and a post-reformer disposed downstream of the diesel autothermal reformer.
    Type: Grant
    Filed: June 22, 2020
    Date of Patent: January 3, 2023
    Assignees: Saudi Arabian Oil Company, Korea Advanced Institute of Science and Technology
    Inventors: Sai P. Katikaneni, Joongmyeon Bae, Jiwoo Oh, Minseok Bae, Dongyeon Kim
  • Patent number: 11492254
    Abstract: A system and method of producing hydrogen, including converting hydrocarbon to methane via steam and pre-reforming catalyst in a pre-reformer, converting the methane to hydrogen and carbon dioxide by steam reforming via a reforming catalyst in a membrane reformer, diffusing through hydrogen through a tubular membrane in the membrane reformer.
    Type: Grant
    Filed: June 18, 2020
    Date of Patent: November 8, 2022
    Assignee: Saudi Arabian Oil Company
    Inventors: Aadesh Harale, Aqil Jamal, Stephen N. Paglieri, Henk van Veen, Francesco Sebastiani, Sai P. Katikaneni
  • Patent number: 11472700
    Abstract: A process for producing a hydrogen-rich gas stream from a liquid hydrocarbon stream, the process comprising the steps of introducing the liquid hydrocarbon stream to a dual catalytic zone, the liquid hydrocarbon stream comprises liquid hydrocarbons selected from the group consisting of liquid petroleum gas (LPG), light naphtha, heavy naphtha, gasoline, kerosene, diesel, and combinations of the same, the dual catalytic zone comprises: a combustion zone comprising a seven component catalyst, and a steam reforming zone, the steam reforming zone comprising a steam reforming catalyst; introducing steam to the dual catalytic zone, introducing an oxygen-rich gas to the dual catalytic zone; contacting the liquid hydrocarbon stream, steam, and oxygen-rich gas with the seven component catalyst to produce a combustion zone fluid; and contacting the combustion zone fluid with the steam reforming catalyst to produce the hydrogen-rich gas stream, wherein the hydrogen-rich gas stream comprises hydrogen.
    Type: Grant
    Filed: December 27, 2019
    Date of Patent: October 18, 2022
    Assignees: Saudi Arabian Oil Company, King Fahd University of Petroleum & Minerals, PETROBRAS
    Inventors: Roberto Carlos Pontes Bittencourt, Mauri Jose Baldini Cardoso, Vivian Passos de Souza, Shakeel Ahmed, Aadesh Harale, Sai P. Katikaneni
  • Patent number: 11358128
    Abstract: A method for producing a hydrogen rich gas from a heavy hydrocarbon feed comprising the steps of introducing the hydrocarbon feed to a reactor, the reactor comprising a low temperature reforming catalyst, the low temperature reforming catalyst comprising an amount of praseodymium, 12 wt % nickel, and an aluminum oxide component, contacting the low temperature reforming catalyst with the hydrocarbon feed in the reactor, wherein the reactor operates at a temperature between 500° C. and 600° C., wherein the reactor operates at a pressure between 3 bar and 40 bar, and producing the hydrogen rich gas over the low temperature reforming catalyst, wherein the hydrogen rich gas comprises hydrogen.
    Type: Grant
    Filed: December 30, 2019
    Date of Patent: June 14, 2022
    Assignees: Saudi Arabian Oil Company, King Fahd University of Petroleum & Minerals
    Inventors: Shakeel Ahmed, Aadesh Harale, Mohammed Albuali, Kunho Lee, Sai P. Katikaneni, Mohammed Draze
  • Patent number: 11322766
    Abstract: A solid oxide fuel cell including a hydrocarbon reforming catalyst and a method for forming the solid oxide fuel cell are provided. An exemplary solid oxide fuel cell includes a cell. The cell includes a filled metal substrate including holes substantially filled with a permeable material that includes a hydrocarbon reforming catalyst, wherein the filled metal substrate has a front facing a fuel flow and a back facing an electrochemical stack. A permeable layer is formed on the back of the filled metal substrate that is in contact with the permeable material of the filled holes. The cell includes an anode layer proximate to the permeable layer, an electrolyte layer proximate to the anode layer, a diffusion barrier proximate to the anode layer, and a cathode proximate to the diffusion barrier.
    Type: Grant
    Filed: May 28, 2020
    Date of Patent: May 3, 2022
    Inventors: Kunho Lee, Sai P. Katikaneni
  • Patent number: 11277004
    Abstract: An off-grid power system includes a first renewable electrical power assembly configured to produce direct current (DC) electrical power from a first renewable source; a second renewable electrical power assembly configured to produce DC electrical power from a second renewable source; an electrical power circuit that electrically couples the first and second renewable electrical power assemblies together and changes the DC electrical power to at least one of a DC power supply or an alternating current (AC) power supply; and an off-grid hydrocarbon production or processing facility electrically coupled to the electrical power circuit to receive the at least one of the DC power supply or the AC power supply from the electrical power circuit.
    Type: Grant
    Filed: January 4, 2021
    Date of Patent: March 15, 2022
    Assignee: Saudi Arabian Oil Company
    Inventors: Sai P. Katikaneni, Kunho Lee, Tolga Tural
  • Patent number: 11239479
    Abstract: In accordance with one or more embodiments of the present disclosure, a method of starting a fuel reformer including a heating element and a subsequent autothermal reformer includes contacting a first fluid comprising oxygen with the heating element, passing the first fluid into the autothermal reformer to preheat a reformer catalyst within the autothermal reformer to a first temperature, reducing flow of the first fluid into the autothermal reformer, introducing a fuel into the autothermal reformer subsequent to preheating the reformer catalyst to initiate a partial oxidation reaction and generating additional heat, increasing flow of the fuel and first fluid to initiate autothermal reforming, and controlling the temperature of the reformer catalyst by supplying a cooling fluid, the first fluid, and the fuel and adjusting flow of each.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: February 1, 2022
    Assignees: Saudi Arabian Oil Company, Korea Advanced Institute of Science and Technology
    Inventors: Sai P. Katikaneni, Joongmyeon Bae, Jiwoo Oh, Minseok Bae, Dongyeon Kim
  • Publication number: 20220002151
    Abstract: According to embodiments of the present disclosure, a method of producing hydrogen in a fuel cell includes passing ammonia under pressure to an anode of the fuel cell, where the ammonia is decomposed into nitrogen gas and protons. The fuel cell comprises a cathode, the anode, and a proton-conducting electrolyte between the anode and the cathode. The anode includes an ammonia decomposition catalyst. The method further includes passing the purging the nitrogen from the anode, passing the protons through the proton-conducting electrolyte to the cathode, and passing the electrons from the anode to the cathode, wherein the protons and the electrons react to produce substantially pure hydrogen gas under pressure.
    Type: Application
    Filed: July 6, 2021
    Publication date: January 6, 2022
    Applicants: Saudi Arabian Oil Company, Korea Advanced Institute of Science and Technology
    Inventors: Sai P. Katikaneni, Kunho Lee, Joongmyeon Bae, WooChul Jung
  • Publication number: 20220002884
    Abstract: According to embodiments of the present disclosure, a solid oxide fuel cell includes a cathode, an anode, and a solid oxide electrolyte disposed between the anode and the cathode. The anode includes a porous scaffold that includes a solid oxide having one or more metal nanoparticles disposed on one or more surfaces of the porous scaffold. The porous scaffold and the solid oxide electrolyte are formed from La0.8Sr0.2Ga0.83Mg0.17O2.815 (LSGM), and the metal nanoparticles are selected from the group consisting of platinum, nickel, gold, and combinations thereof. Methods of synthesizing ammonia using the fuel cell are also described.
    Type: Application
    Filed: July 6, 2021
    Publication date: January 6, 2022
    Applicants: Saudi Arabian Oil Company, Korea Advanced Institute of Science and Technology
    Inventors: Sai P. Katikaneni, Kunho Lee, Kangyong Lee, Joongmyeon Bae, WooChul Jung
  • Publication number: 20220006110
    Abstract: According to embodiments of the present disclosure, a solid oxide fuel cell includes a cathode, an anode, and a solid oxide electrolyte between the anode and the cathode. The solid oxide electrolyte includes a solid oxide, and the anode includes a porous scaffold. The porous scaffold includes a solid oxide having metal-based catalysts disposed on one or more surfaces of the porous scaffold. In embodiments, at least one ammonia decomposition layer is disposed proximate the surface of the porous scaffold and is configured to convert ammonia into hydrogen and nitrogen for subsequent feed of hydrogen to the anode. The ammonia decomposition layer also includes a metal decomposition catalyst.
    Type: Application
    Filed: July 6, 2021
    Publication date: January 6, 2022
    Applicants: Saudi Arabian Oil Company, Korea Advanced Institute of Science and Technology
    Inventors: Sai P. Katikaneni, Kunho Lee, Kangyong Lee, Joongmyeon Bae, WooChul Jung
  • Publication number: 20210395084
    Abstract: Embodiments of the present disclosure are directed to a diesel reforming system comprising: a diesel autothermal reformer; a liquid desulfurizer disposed upstream of the diesel autothermal reformer and configured to remove sulfur compounds from diesel fuel prior to feeding to the diesel autothermal reformer; a combustor in communication with the liquid desulfurizer and configured to provide heat for the liquid desulfurizer; a regulating valve in communication with the liquid desulfurizer and the combustor, the regulating valve being configured to control diesel fuel feeds to the liquid desulfurizer and the combustor; and a post-reformer disposed downstream of the diesel autothermal reformer.
    Type: Application
    Filed: June 22, 2020
    Publication date: December 23, 2021
    Applicants: Saudi Arabian Oil Company, Korea Advanced Institute of Science and Technology
    Inventors: Sai P. Katikaneni, Joongmyeon Bae, Jiwoo Oh, Minseok Bae, Dongyeon Kim
  • Publication number: 20210394151
    Abstract: Embodiments of the present disclosure are directed to a diesel reformer system comprising: a diesel autothermal reforming unit; a post-reforming unit disposed downstream of the autothermal reforming unit; a heat exchanger disposed downstream of the post-reforming unit; and a desulfurization unit disposed downstream of the heat exchanger.
    Type: Application
    Filed: June 23, 2020
    Publication date: December 23, 2021
    Applicants: Saudi Arabian Oil Company, Korea Advanced Institute of Science and Technology
    Inventors: Sai P. Katikaneni, Joongyeon Bae, Jiwoo Oh, Minseok Bae, Dongyeon Kim
  • Publication number: 20210395083
    Abstract: A system and method of producing hydrogen, including converting hydrocarbon to methane via steam and pre-reforming catalyst in a pre-reformer, converting the methane to hydrogen and carbon dioxide by steam reforming via a reforming catalyst in a membrane reformer, diffusing through hydrogen through a tubular membrane in the membrane reformer.
    Type: Application
    Filed: June 18, 2020
    Publication date: December 23, 2021
    Inventors: Aadesh Harale, Aqil Jamal, Stephen N. Paglieri, Henk van Veen, Francesco Sebastiani, Sai P. Katikaneni
  • Publication number: 20210376367
    Abstract: A solid oxide fuel cell including a hydrocarbon reforming catalyst and a method for forming the solid oxide fuel cell are provided. An exemplary solid oxide fuel cell includes a cell. The cell includes a filled metal substrate including holes substantially filled with a permeable material that includes a hydrocarbon reforming catalyst, wherein the filled metal substrate has a front facing a fuel flow and a back facing an electrochemical stack. A permeable layer is formed on the back of the filled metal substrate that is in contact with the permeable material of the filled holes. The cell includes an anode layer proximate to the permeable layer, an electrolyte layer proximate to the anode layer, a diffusion barrier proximate to the anode layer, and a cathode proximate to the diffusion barrier.
    Type: Application
    Filed: May 28, 2020
    Publication date: December 2, 2021
    Applicant: Saudi Arabian Oil Company
    Inventors: Kunho Lee, Sai P. Katikaneni
  • Publication number: 20210305604
    Abstract: In accordance with one or more embodiments of the present disclosure, a method of starting a fuel reformer including a heating element and a subsequent autothermal reformer includes contacting a first fluid comprising oxygen with the heating element, passing the first fluid into the autothermal reformer to preheat a reformer catalyst within the autothermal reformer to a first temperature, reducing flow of the first fluid into the autothermal reformer, introducing a fuel into the autothermal reformer subsequent to preheating the reformer catalyst to initiate a partial oxidation reaction and generating additional heat, increasing flow of the fuel and first fluid to initiate autothermal reforming, and controlling the temperature of the reformer catalyst by supplying a cooling fluid, the first fluid, and the fuel and adjusting flow of each.
    Type: Application
    Filed: March 26, 2020
    Publication date: September 30, 2021
    Applicants: Saudi Arabian Oil Company, Korea Advanced Institute of Science and Technology
    Inventors: Sai P. Katikaneni, Joongmyeon Bae, Jiwoo Oh, Minseok Bae, Dongyeon Kim
  • Publication number: 20210197178
    Abstract: A method for producing a hydrogen rich gas from a heavy hydrocarbon feed comprising the steps of introducing the hydrocarbon feed to a reactor, the reactor comprising a low temperature reforming catalyst, the low temperature reforming catalyst comprising an amount of praesodymium, 12 wt % nickel, and an aluminum oxide component, contacting the low temperature reforming catalyst with the hydrocarbon feed in the reactor, wherein the reactor operates at a temperature between 500° C. and 600° C., wherein the reactor operates at a pressure between 3 bar and 40 bar, and producing the hydrogen rich gas over the low temperature reforming catalyst, wherein the hydrogen rich gas comprises hydrogen.
    Type: Application
    Filed: December 30, 2019
    Publication date: July 1, 2021
    Inventors: Shakeel Ahmed, Aadesh Harale, Mohammed Albuali, Kunho Lee, Sai P. Katikaneni, Mohammed Draze
  • Publication number: 20210198106
    Abstract: A process for producing a hydrogen-rich gas stream from a liquid hydrocarbon stream, the process comprising the steps of introducing the liquid hydrocarbon stream to a dual catalytic zone, the liquid hydrocarbon stream comprises liquid hydrocarbons selected from the group consisting of liquid petroleum gas (LPG), light naphtha, heavy naphtha, gasoline, kerosene, diesel, and combinations of the same, the dual catalytic zone comprises: a combustion zone comprising a seven component catalyst, and a steam reforming zone, the steam reforming zone comprising a steam reforming catalyst; introducing steam to the dual catalytic zone, introducing an oxygen-rich gas to the dual catalytic zone; contacting the liquid hydrocarbon stream, steam, and oxygen-rich gas with the seven component catalyst to produce a combustion zone fluid; and contacting the combustion zone fluid with the steam reforming catalyst to produce the hydrogen-rich gas stream, wherein the hydrogen-rich gas stream comprises hydrogen.
    Type: Application
    Filed: December 27, 2019
    Publication date: July 1, 2021
    Inventors: Roberto Carlos Pontes Bittencourt, Mauri Jose Baldini Cardoso, Vivian Passos de Souza, Shakeel Ahmed, Aadesh Harale, Sai P. Katikaneni
  • Publication number: 20210162374
    Abstract: Provided herein are structured catalysts, methods of making structured catalysts, and methods of using structured catalysts for pre-reforming of hydrocarbons. The structured catalysts contain a structured catalyst substrate, a first coating containing cerium-gadolinium oxide; and a second coating containing nickel and cerium-gadolinium oxide.
    Type: Application
    Filed: February 11, 2021
    Publication date: June 3, 2021
    Applicants: SAUDI ARABIAN OIL COMPANY, Korea Advanced Institute of Science and Technology
    Inventors: Sai P. Katikaneni, Joongmyeon Bae, Sangho Lee, Minseok Bae
  • Patent number: 10953388
    Abstract: A method for producing a methane-rich gas from a heavy hydrocarbon feed, the method comprising the steps of introducing the heavy hydrocarbon stream to a catalytic reactor, the catalytic reactor comprising an activated catalyst, the activated catalyst comprising 20 wt % of nickel, 70 wt % of a cerium oxide component, and 10 wt % of a gadolinium oxide component; applying the heavy hydrocarbon stream to the activated catalyst; and producing the methane-rich gas over the activated catalyst, wherein the methane-rich gas is selected from the group consisting of methane, carbon dioxide, carbon monoxide, hydrogen, and combinations of the same.
    Type: Grant
    Filed: December 27, 2019
    Date of Patent: March 23, 2021
    Inventors: Aadesh Harale, Sai P. Katikaneni, Joongmyeon Bae, Youshan Ma, Ahmed Al-Naimi
  • Patent number: 10790519
    Abstract: Solid oxide fuel cell stacks and methods of sealing a planar solid oxide fuel cell. Unit cells within the stack each include a metal frame with a periphery that can both provide a support surface for a membrane electrode assembly, as well as form a fluid-tight seal with a bonded separator plate. The separator plate includes a peripheral lip that bounds a cell-receiving cavity such that a volumetric region is formed within the separator plate to receive at least a portion of the membrane electrode assembly to create a fluid-tight pathway for at least one of the reactants that is being introduced to a corresponding anode layer or cathode layer of the membrane electrode assembly.
    Type: Grant
    Filed: June 5, 2018
    Date of Patent: September 29, 2020
    Assignee: Saudi Arabian Oil Company
    Inventors: Sai P. Katikaneni, Inyong Kang, Jinwoo Park, Hyundal Song, Hyunbae Park, Byungwook Park