Patents by Inventor Peter Cheung

Peter Cheung 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: 20170137346
    Abstract: A process includes hydrogenating, in a reaction zone, a highly unsaturated hydrocarbon received from a hydrocarbon stream to yield a product having an unsaturated hydrocarbon, the hydrogenating step occurring in the presence of a hydrogenation catalyst which has a selectivity for conversion of the highly unsaturated hydrocarbon to the unsaturated hydrocarbon of about 90 mol % or greater based on the moles of the highly unsaturated hydrocarbon which are converted to the product, the hydrogenating step occurring in a reaction zone under conditions which include a flow index (IF) in a range of about 0.09 to about 35, wherein the IF is defined as: I F = F × [ CO ] V , wherein F is the flow rate of the hydrocarbon stream into the reaction zone in units of kg/h, [CO] is the concentration of carbon monoxide in the hydrocarbon stream in units of mol %, and V is the volume of the reaction zone in units of ft3.
    Type: Application
    Filed: November 16, 2015
    Publication date: May 18, 2017
    Inventors: Joseph Bergmeister, III, Tin-Tack Peter Cheung, Zongxuan Hong, Timothy O. Odi, Charles D. Nolidin, Thomas J. Gonzales, Jennifer L. Nill, David W. Dockter
  • Patent number: 9636659
    Abstract: A composition comprising an extruded inorganic support comprising an oxide of a metal or metalloid, and at least one catalytically active metal, wherein the extruded inorganic support has pores, a total pore volume, and a pore size distribution, wherein the pore size distribution displays at least two peaks of pore diameters, each peak having a maximum, wherein a first peak has a first maximum of pore diameters of equal to or greater than about 120 nm and a second peak has a second maximum of pore diameters of less than about 120 nm, and wherein greater than or equal to about 5% of a total pore volume of the extruded inorganic support is contained within the first peak of pore diameters.
    Type: Grant
    Filed: July 14, 2015
    Date of Patent: May 2, 2017
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Tin-Tack Peter Cheung, Joseph Bergmeister, III, Stephen L. Kelly
  • Patent number: 9550173
    Abstract: A method for producing a selective hydrogenation catalyst for hydrogenating a highly unsaturated hydrocarbon to an unsaturated hydrocarbon comprising contacting an inorganic catalyst support with a chlorine-containing compound to form a chlorided catalyst support and adding palladium to the chlorided catalyst support to form a supported-palladium composition. A selective hydrogenation catalyst for hydrogenating a highly unsaturated hydrocarbon to an unsaturated hydrocarbon formed by the method comprising contacting an inorganic catalyst support with a chlorine-containing compound to form a chlorided catalyst support and adding palladium to the chlorided catalyst support to form a supported-palladium composition.
    Type: Grant
    Filed: April 9, 2014
    Date of Patent: January 24, 2017
    Assignee: Chevron Philips Chemical Company LP
    Inventors: Tin-Tack Peter Cheung, Joseph Bergmeister, III, Zongxuan Hong
  • Publication number: 20160355449
    Abstract: A process comprising hydrogenating a highly unsaturated hydrocarbon in the presence of a first hydrogenation catalyst and a second hydrogenation catalyst to one or more compounds including an unsaturated hydrocarbon such that a total conversion of the highly unsaturated hydrocarbon is about 99 mol % or greater. In the process, the first hydrogenation catalyst, the second hydrogenation catalyst, or both, have a hydrogenation selectivity to the unsaturated hydrocarbon of about 90% or greater.
    Type: Application
    Filed: June 8, 2015
    Publication date: December 8, 2016
    Inventors: Timothy O. Odi, Zongxuan Hong, Joseph Bergmeister, III, Tin-Tack Peter Cheung, Charles D. Nolidin, Thomas J. Gonzales, Jennifer L. Nill, David W. Dockter
  • Patent number: 9511359
    Abstract: A method of making a selective hydrogenation catalyst comprising contacting a support with a palladium-containing compound to form a supported-palladium composition; contacting the supported-palladium composition with an organophosphorus compound and a weak acid to form a catalyst composition; and reducing the catalyst composition to form the catalyst. A method of making a selective hydrogenation catalyst comprising contacting an alumina support with a palladium-containing compound to form a supported-palladium composition; contacting the supported-palladium composition with silver nitrate and potassium fluoride to form a mixture; contacting the mixture with an organophosphorus compound and a weak acid to form a catalyst precursor; and reducing the catalyst precursor to form the catalyst.
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: December 6, 2016
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Tin-Tack Peter Cheung, Zongxuan Hong, Joseph Bergmeister, III
  • Patent number: 9347139
    Abstract: A method of removing a metal protective layer from a surface of a reactor component comprising treating the metal protective layer with one or more chemical removal agents to remove at least a portion of the metal protective layer from the reactor component. A method of removing a metal protective layer from a surface of a reactor component comprising treating the metal protective layer to remove the metal protective layer from the reactor component, and determining a thickness of the reactor component following treatment.
    Type: Grant
    Filed: July 31, 2013
    Date of Patent: May 24, 2016
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Dennis L. Holtermann, Tin-Tack Peter Cheung, Christopher D. Blessing, Lawrence E. Huff, Joseph Bergmeister, III, Robert L. Hise, Geoffrey E. Scanlon, David W. Dockter
  • Publication number: 20160136630
    Abstract: A method of making a selective hydrogenation catalyst comprising contacting a support with a palladium-containing compound to form a supported-palladium composition; contacting the supported-palladium composition with an organophosphorus compound and a weak acid to form a catalyst composition; and reducing the catalyst composition to form the catalyst. A method of making a selective hydrogenation catalyst comprising contacting an alumina support with a palladium-containing compound to form a supported-palladium composition; contacting the supported-palladium composition with silver nitrate and potassium fluoride to form a mixture; contacting the mixture with an organophosphorus compound and a weak acid to form a catalyst precursor; and reducing the catalyst precursor to form the catalyst.
    Type: Application
    Filed: November 14, 2014
    Publication date: May 19, 2016
    Inventors: Tin-Tack Peter Cheung, Zongxuan Hong, Joseph Bergmeister, III
  • Publication number: 20160107146
    Abstract: A composition comprising a support formed from a high surface area alumina and having a low angularity particle shape; and at least one catalytically active metal, wherein the support has pores, a total pore volume, and a pore size distribution; wherein the pore size distribution displays at least two peaks of pore diameters, each peak having a maximum; wherein a first peak has a first maximum of pore diameters of equal to or greater than about 200 nm and a second peak has a second maximum of pore diameters of less than about 200 nm; and wherein greater than or equal to about 5% of a total pore volume of the support is contained within the first peak of pore diameters.
    Type: Application
    Filed: December 29, 2015
    Publication date: April 21, 2016
    Inventors: Tin-Tack Peter CHEUNG, Joseph BERGMEISTER, III, Stephen L. KELLY, Michael Joseph BREEN, Joseph C. DELLAMORTE, Dana Rehms MOONEY
  • Publication number: 20160059199
    Abstract: Methods and systems for improved catalytic reforming are disclosed. A method of catalytic reforming includes feeding a feedstream comprising C6-convertibles to one or more reactors; contacting the feedstream with a reforming catalyst; selecting values for a LHSV, a H2/HC ratio, and a conversion of C6-convertibles from a deactivation kinetic model so as to maximize a net present amount of benzene produced over a run-length of the reforming catalyst; operating the one or more reactors at the selected LHSV, the selected H2/HC ratio, and the selected conversion of C6-convertibles; andrecovering an effluent from the reactor, wherein the effluent comprises at least about 40 wt % benzene.
    Type: Application
    Filed: November 10, 2015
    Publication date: March 3, 2016
    Inventor: Tin-Tack Peter CHEUNG
  • Patent number: 9221727
    Abstract: A composition comprising a supported hydrogenation catalyst comprising palladium and an organophosphorous compound, the supported hydrogenation catalyst being capable of selectively hydrogenating highly unsaturated hydrocarbons to unsaturated hydrocarbons. A method of making a selective hydrogenation catalyst comprising contacting a support with a palladium-containing compound to form a palladium supported composition, contacting the palladium supported composition with an organophosphorus compound to form a catalyst precursor, and reducing the catalyst precursor to form the catalyst.
    Type: Grant
    Filed: March 26, 2015
    Date of Patent: December 29, 2015
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Tin-Tack Peter Cheung, Zongxuan Hong
  • Patent number: 9200214
    Abstract: Methods and systems for improved catalytic reforming are disclosed. A method of catalytic reforming includes feeding a feedstream comprising C6-convertibles to one or more reactors; contacting the feedstream with a reforming catalyst; selecting values for a LHSV, a H2/HC ratio, and a conversion of C6-convertibles from a deactivation kinetic model so as to maximize a net present amount of benzene produced over a run-length of the reforming catalyst; operating the one or more reactors at the selected LHSV, the selected H2/HC ratio, and the selected conversion of C6-convertibles; and recovering an effluent from the reactor, wherein the effluent comprises at least about 40 wt % benzene.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: December 1, 2015
    Assignee: Chevron Phillips Chemical Company LP
    Inventor: Tin-Tack Peter Cheung
  • Publication number: 20150314270
    Abstract: A composition comprising an extruded inorganic support comprising an oxide of a metal or metalloid, and at least one catalytically active metal, wherein the extruded inorganic support has pores, a total pore volume, and a pore size distribution, wherein the pore size distribution displays at least two peaks of pore diameters, each peak having a maximum, wherein a first peak has a first maximum of pore diameters of equal to or greater than about 120 nm and a second peak has a second maximum of pore diameters of less than about 120 nm, and wherein greater than or equal to about 5% of a total pore volume of the extruded inorganic support is contained within the first peak of pore diameters.
    Type: Application
    Filed: July 14, 2015
    Publication date: November 5, 2015
    Inventors: Tin-Tack Peter CHEUNG, Joseph BERGMEISTER, III, Stephen L. KELLY
  • Publication number: 20150275104
    Abstract: A system of reforming reactors comprises a plurality of reactors coupled by flow lines, a feed header coupled to the plurality of reactors by a plurality of feed lines, an effluent header coupled to the plurality of reactors by a plurality of effluent lines, and a plurality of valves disposed in the flow lines, the feed lines, and the effluent lines. Each reactor comprises a reforming catalyst, and the plurality of valves are capable of being dynamically operated to create a first serial flow path through the plurality of reactors. The plurality of valves is further configured to dynamically reconnect the plurality of reactors to create a second serial flow path through the plurality of reactors. A first reactor of the plurality of reactors is adjacent to a second reactor of the plurality of reactors in the first serial flow path, and the first reactor is not adjacent to the second reactor in the second serial flow path.
    Type: Application
    Filed: June 11, 2015
    Publication date: October 1, 2015
    Inventors: Scott G. Morrison, Tin-Tack Peter Cheung, Joe Bergmeister, III, Vincent D. McGahee, Bruce D. Murray, Daniel M. Hasenberg
  • Patent number: 9144787
    Abstract: A composition comprising an extruded inorganic support comprising an oxide of a metal or metalloid, and at least one catalytically active metal, wherein the extruded inorganic support has pores, a total pore volume, and a pore size distribution, wherein the pore size distribution displays at least two peaks of pore diameters, each peak having a maximum, wherein a first peak has a first maximum of pore diameters of equal to or greater than about 120 nm and a second peak has a second maximum of pore diameters of less than about 120 nm, and wherein greater than or equal to about 5% of a total pore volume of the extruded inorganic support is contained within the first peak of pore diameters.
    Type: Grant
    Filed: March 25, 2014
    Date of Patent: September 29, 2015
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Tin-Tack Peter Cheung, Joseph Bergmeister, III, Stephen L. Kelly
  • Publication number: 20150241484
    Abstract: A circuit including over-current protection includes a voltage input, first and second switching transistors that are complementarily switched and that receive current from the voltage input, a first resistor, a first diode including a first anode and a first cathode, and a second diode including a second anode and a second cathode. The first anode and the second anode are connected to each other and are connected to the voltage input via the first resistor. The first cathode is connected to the first switching transistor and the second cathode is connected to the second switching transistor such that the connection of the first and second anodes provides an over-current signal that is related to the current in the first and second switching transistors.
    Type: Application
    Filed: October 9, 2013
    Publication date: August 27, 2015
    Inventors: Atul Abhyankar, Peter Cheung
  • Patent number: 9108188
    Abstract: A composition comprising an extruded inorganic support comprising an oxide of a metal or metalloid, and at least one catalytically active metal, wherein the extruded inorganic support has pores, a total pore volume, and a pore size distribution, wherein the pore size distribution displays at least two peaks of pore diameters, each peak having a maximum, wherein a first peak has a first maximum of pore diameters of equal to or greater than about 120 nm and a second peak has a second maximum of pore diameters of less than about 120 nm, and wherein greater than or equal to about 5% of a total pore volume of the extruded inorganic support is contained within the first peak of pore diameters.
    Type: Grant
    Filed: March 7, 2012
    Date of Patent: August 18, 2015
    Assignee: Chevoron Phillip Chemical Company, LP
    Inventors: Tin-Tack Peter Cheung, Joseph Bergmeister, III, Stephen L. Kelly
  • Patent number: 9085736
    Abstract: A process for operating a reforming reactor system comprising operating a plurality of reactors until at least one reactor is deemed to have an operational issue, wherein each of the plurality of reactors contains a catalyst capable of converting at least a portion of a hydrocarbon stream to aromatic hydrocarbons, isolating the at least one reactor deemed to have the operational issue from a remaining plurality of reactors that continue to operate to convert at least the portion of the hydrocarbon stream to aromatic hydrocarbons while the at least one reactor deemed to have the operational issue is isolated from the plurality of remaining reactors, addressing the operational issues, returning the at least one reactor to the hydrocarbon stream by connecting the reactor to the remaining plurality of reactors, and resuming operations of the reforming reactor system to convert at least the portion of the hydrocarbon stream to aromatic hydrocarbons.
    Type: Grant
    Filed: October 26, 2011
    Date of Patent: July 21, 2015
    Assignee: CHEVRON PHILLIPS CHEMICAL COMPANY LP
    Inventors: Scott G. Morrison, Tin-Tack Peter Cheung, Joe Bergmeister, III, Vincent D. McGahee, Bruce D. Murray, Daniel M. Hasenberg
  • Publication number: 20150197464
    Abstract: A composition comprising a supported hydrogenation catalyst comprising palladium and an organophosphorous compound, the supported hydrogenation catalyst being capable of selectively hydrogenating highly unsaturated hydrocarbons to unsaturated hydrocarbons. A method of making a selective hydrogenation catalyst comprising contacting a support with a palladium-containing compound to form a palladium supported composition, contacting the palladium supported composition with an organophosphorus compound to form a catalyst precursor, and reducing the catalyst precursor to form the catalyst.
    Type: Application
    Filed: March 26, 2015
    Publication date: July 16, 2015
    Inventors: Tin-Tack Peter Cheung, Zongxuan Hong
  • Patent number: 9012348
    Abstract: A composition comprising a supported hydrogenation catalyst comprising palladium and an organophosphorous compound, the supported hydrogenation catalyst being capable of selectively hydrogenating highly unsaturated hydrocarbons to unsaturated hydrocarbons. A method of making a selective hydrogenation catalyst comprising contacting a support with a palladium-containing compound to form a palladium supported composition, contacting the palladium supported composition with an organophosphorus compound to form a catalyst precursor, and reducing the catalyst precursor to form the catalyst.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: April 21, 2015
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Tin-Tack Peter Cheung, Zongxuan Hong
  • Publication number: 20140221197
    Abstract: A method for producing a selective hydrogenation catalyst for hydrogenating a highly unsaturated hydrocarbon to an unsaturated hydrocarbon comprising contacting an inorganic catalyst support with a chlorine-containing compound to form a chlorided catalyst support and adding palladium to the chlorided catalyst support to form a supported-palladium composition. A selective hydrogenation catalyst for hydrogenating a highly unsaturated hydrocarbon to an unsaturated hydrocarbon formed by the method comprising contacting an inorganic catalyst support with a chlorine-containing compound to form a chlorided catalyst support and adding palladium to the chlorided catalyst support to form a supported-palladium composition.
    Type: Application
    Filed: April 9, 2014
    Publication date: August 7, 2014
    Applicant: Chevron Phillips Chemical Company LP
    Inventors: Tin-Tack Peter Cheung, Joseph Bergmeister, III, Zongxuan Hong