Patents by Inventor Hye Kyung C. Timken

Hye Kyung C. Timken 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: 20250073635
    Abstract: In one embodiment is provided an energy-efficient post-combustion CO2 capturing process utilizing protic ionic liquids made of an organic superbase and a weak acid in the presence of moisture. The concept is demonstrated in one embodiment with the ionic liquid, 1,8-diazabiciclo(5.4.0)undec-7-enium imidazolate, [DBUH][Im].
    Type: Application
    Filed: August 27, 2024
    Publication date: March 6, 2025
    Applicant: Chevron U.S.A. Inc.
    Inventors: Dominic BURNS, Hye-Kyung C. TIMKEN, John HOLBREY, Huping LUO, Evan HATAKEYAMA
  • Publication number: 20240191142
    Abstract: Provided is a blend of a petroleum feedstock and 1-20 wt. % of plastic, based on the weight of the blend, with the plastic comprising polyethylene and/or polypropylene, and the plastic in the blend comprising finely dispersed microcrystalline particles having an average particle size of 10 micron to less than 100 microns, and less than 10 ppm chloride. A process for preparing a blend of plastic and petroleum is provided, comprising mixing together a petroleum feed and a plastic comprising polyethylene and/or polypropylene and heating the mixture above the melting point of the plastic, but less than 500° F. The blend mixture is then hot filtered with the resulting filtered blend mixture being heated to at least 500° F. The heated mixture can then be treated with a chloride removal guard bed. The resulting blend can then be cooled and stored or sent directly to a refinery conversion unit.
    Type: Application
    Filed: July 10, 2023
    Publication date: June 13, 2024
    Applicant: Chevron U.S.A. Inc.
    Inventors: Hye-Kyung C. Timken, Joel E. Schmidt, Tengfei Liu
  • Publication number: 20240191140
    Abstract: Provided is a blend of a petroleum feedstock and 1-20 wt. % of plastic, based on the weight of the blend, with the plastic comprising polyethylene and/or polypropylene, and the plastic in the blend comprising finely dispersed microcrystalline particles having an average particle size of 10 micron to less than 100 microns and less than 100 ppm chloride. A process for preparing a blend of plastic and petroleum is provided, comprising mixing together a petroleum feed and a plastic comprising polyethylene and/or polypropylene and heating the mixture in the range of from 550° F. to 700° F. The blend mixture is then hot filtered and then optionally treated with a chloride removal guard bed. The resulting blend can then be cooled and stored or sent directly to a refinery conversion unit.
    Type: Application
    Filed: July 10, 2023
    Publication date: June 13, 2024
    Applicant: Chevron U.S.A. Inc.
    Inventors: Hye-Kyung C. Timken, Joel E. Schmidt, Tengfei Liu
  • Publication number: 20240010928
    Abstract: Provided is a continuous process for converting waste plastic into recycle for polypropylene polymerization. The process comprises selecting waste plastics containing polyethylene and/or polypropylene and preparing a blend of a bio feedstock and the selected plastic. The amount of plastic in the blend comprises no more than 20 wt. % of the blend. The blend is passed to a FCC unit. A liquid petroleum gas LPG olefin/paraffin mixture and naphtha are recovered from the FCC unit and can be passed on to make polypropylene.
    Type: Application
    Filed: July 10, 2023
    Publication date: January 11, 2024
    Applicant: Chevron U.S.A. Inc.
    Inventors: Joel E. SCHMIDT, Tengfei LIU, Hye-Kyung C. TIMKEN
  • Publication number: 20240010583
    Abstract: Provided is a continuous process for converting waste plastic into recycle for polyethylene polymerization. The process comprises selecting waste plastics containing polyethylene and/or polypropylene and preparing a blend of a bio feedstock and the selected plastic. The amount of plastic in the blend comprises no more than 20 wt. % of the blend. The blend is passed to a FCC unit. A liquid petroleum gas LPG olefin/paraffin mixture and naphtha are recovered from the FCC unit and can be passed on to make polyethylene.
    Type: Application
    Filed: July 10, 2023
    Publication date: January 11, 2024
    Applicant: Chevron U.S.A. Inc.
    Inventors: Joel E. SCHMIDT, Tengfei LIU, Hye-Kyung C. TIMKEN
  • Publication number: 20240010927
    Abstract: Provided is a composition comprising a blend of a waste plastic and a bio feedstock. Also provided is a process for preparing a stable blend of a plastic and bio feedstock which can be stored or transported if desired. The amount of plastic in the blend comprises no more than 20 wt. % of the blend. The blend can be passed to a conversion unit for conversion of the waste plastic and bio feedstock. The conversion process produces clean monomers for polymerization and chemical intermediates.
    Type: Application
    Filed: July 10, 2023
    Publication date: January 11, 2024
    Applicant: Chevron U.S.A. Inc.
    Inventors: Tengfei LIU, Joel E. SCHMIDT, Hye-Kyung C. TIMKEN
  • Publication number: 20240010940
    Abstract: Provided is a continuous process for converting waste plastic into recycle for chemical production. The process comprises selecting waste plastics containing polyethylene and/or polypropylene and preparing a stable blend of a bio feedstock and the selected plastic. The amount of plastic in the blend comprises no more than 20 wt. % of the blend. The blend is passed to a conversion unit. Useful chemicals are recovered, including C3 and C4 olefins and aromatics.
    Type: Application
    Filed: July 10, 2023
    Publication date: January 11, 2024
    Applicant: Chevron U.S.A. Inc.
    Inventors: Tengfei LIU, Joel E. SCHMIDT, Hye-Kyung C. TIMKEN
  • Publication number: 20230348342
    Abstract: Provided is a continuous process for converting waste plastic into recycle for polyethylene polymerization. The process comprises selecting waste plastics containing polyethylene and/or polypropylene and preparing a blend of petroleum and the selected plastic. The amount of plastic in the blend comprises no more than 20 wt. % of the blend. The blend is passed to a refinery hydrocracking unit. A liquid petroleum gas C3-C4 olefin/paraffin mixture, and optionally naphtha, is recovered from the hydrocracking unit and passed to a steam cracker to make ethylene. A heavy fraction can also be recovered from the hydrocracking unit and passed to an isomerization dewaxing unit to prepare base oil.
    Type: Application
    Filed: March 30, 2023
    Publication date: November 2, 2023
    Applicant: Chevron U.S.A. Inc.
    Inventor: Hye-Kyung C. TIMKEN
  • Publication number: 20230312863
    Abstract: Provided is a blend of a petroleum feedstock and 1-20 wt. % of plastic, based on the weight of the blend, with the plastic comprising polyethylene and/or polypropylene, and the plastic in the blend comprising finely dispersed microcrystalline particles having an average particle size of 10 micron to less than 100 microns. A process for preparing a blend of plastic and petroleum is provided, comprising mixing together a petroleum feed and a plastic comprising polyethylene and/or polypropylene and heating the mixture above the melting point of the plastic, but less than 500° F. Then cooling the plastic melt and petroleum feedstock liquid blend with mixing to a temperature below the melting point of the plastic.
    Type: Application
    Filed: March 30, 2023
    Publication date: October 5, 2023
    Applicant: Chevron U.S.A. Inc.
    Inventors: Hye-Kyung C. TIMKEN, Tengfei LIU, Joel E. SCHMIDT, Kaustav CHAUDHURI
  • Publication number: 20230312438
    Abstract: Provided is a continuous process for converting waste plastic into recycle for polyethylene polymerization. The process comprises selecting waste plastics containing polyethylene and/or polypropylene and preparing a stable blend of petroleum and the selected plastic. The amount of plastic in the blend comprises no more than 20 wt.% of the blend. The blend is passed to a refinery crude unit. A liquid petroleum gas C3-C4 olefin/paraffin mixture, and optionally naphtha stream, is recovered from the crude unit and passed to a steam cracker to make ethylene. Product streams from the crude unit can also be passed to a hydrocracking unit, with a recovered heavy fraction then being passed to an isomerization dewaxing unit to prepare base oil.
    Type: Application
    Filed: March 30, 2023
    Publication date: October 5, 2023
    Applicant: Chevron U.S.A. Inc.
    Inventor: Hye-Kyung C. TIMKEN
  • Publication number: 20230312437
    Abstract: Provided is a continuous process for converting waste plastic into recycle for polypropylene polymerization. The process comprises selecting waste plastics containing polyethylene and/or polypropylene and preparing a stable blend of petroleum and the selected plastic. The amount of plastic in the blend comprises no more than 20 wt. % of the blend. The blend is passed to a refinery FCC unit. A liquid petroleum gas C3 olefin/paraffin mixture is recovered from the FCC unit. The C3 paraffins and C3 olefins are separated into different fractions with the C3 olefin fraction passed to a propylene polymerization reactor, and the C3 paraffin fraction passed optionally to a dehydrogenation unit to produce additional propylene.
    Type: Application
    Filed: March 30, 2023
    Publication date: October 5, 2023
    Applicant: Chevron U.S.A. Inc.
    Inventors: Joel E. SCHMIDT, Hye-Kyung C. TIMKEN, Tengfei LIU, Richard L. GROVE, Kaidong CHEN
  • Publication number: 20230313052
    Abstract: Provided is a continuous process for converting waste plastic into recycle for polypropylene polymerization. The process comprises selecting waste plastics containing polyethylene and/or polypropylene and preparing a stable blend of petroleum and the selected plastic. The amount of plastic in the blend comprises no more than 20 wt. % of the blend. The blend is passed to a refinery hydrocracking unit. A liquid petroleum gas C3 olefin/paraffin mixture is recovered from the hydrocracking unit. The C3 paraffins and C3 olefins are separated into different fractions with the C3 olefin fraction passed to a propylene polymerization reactor, and the C3 paraffin fraction passed optionally to a dehydrogenation unit to produce additional propylene. A heavy fraction can also be recovered from the hydrocracking unit and passed to an isomerization dewaxing unit to prepare base oil.
    Type: Application
    Filed: March 30, 2023
    Publication date: October 5, 2023
    Applicant: Chevron U.S.A. Inc.
    Inventor: Hye-Kyung C. TIMKEN
  • Publication number: 20230312862
    Abstract: Provided is a continuous process for converting waste plastic into recycle for polyethylene polymerization. The process comprises selecting waste plastics containing polyethylene and/or polypropylene and preparing a stable blend of petroleum and the selected plastic. The amount of plastic in the blend comprises no more than 20 wt. % of the blend. The blend is passed to a refinery FCC unit. A liquid petroleum gas LPG olefin/paraffin mixture and naphtha are recovered from the FCC unit and passed to a steam cracker to make ethylene.
    Type: Application
    Filed: March 30, 2023
    Publication date: October 5, 2023
    Applicant: Chevron U.S.A. Inc.
    Inventors: Tengfei LIU, Joel E. SCHMIDT, Hye-Kyung C. TIMKEN, Richard L. GROVE, Kaidong CHEN
  • Publication number: 20230312439
    Abstract: Provided is a continuous process for converting waste plastic into recycle for polypropylene polymerization. The process comprises selecting waste plastics containing polyethylene and/or polypropylene and preparing a stable blend of petroleum and the selected plastic. The amount of plastic in the blend comprises no more than 20 wt. % of the blend. The blend is passed to a refinery crude unit. A liquid petroleum gas C3 olefin/paraffin mixture is recovered from the crude unit. The C3 paraffins and C3 olefins are separated into different fractions with the C3 olefin fraction passed to a propylene polymerization reactor, and the C3 paraffin fraction passed to a dehydrogenation unit to produce additional propylene. Product streams from the crude unit can also be passed to a hydrocracking unit, with a recovered heavy fraction then being passed to an isomerization dewaxing unit to prepare base oil.
    Type: Application
    Filed: March 30, 2023
    Publication date: October 5, 2023
    Applicant: Chevron U.S.A. Inc.
    Inventor: Hye-Kyung C. TIMKEN
  • Patent number: 8586812
    Abstract: Processes for upgrading condensate in a first hydrocarbon stream to provide distillate material may involve ionic liquid catalyzed olefin oligomerization of olefins in the first hydrocarbon stream to provide a first distillate enriched stream, dechlorination of the first distillate enriched stream, hydroprocessing at least one of a second and a third hydrocarbon stream to provide a second distillate enriched stream, and separation of a distillate product from the first and second distillate enriched streams.
    Type: Grant
    Filed: December 22, 2010
    Date of Patent: November 19, 2013
    Assignee: Chevron U.S.A. Inc.
    Inventors: Hye-Kyung C. Timken, Bi-Zeng Zhan
  • Patent number: 8388828
    Abstract: A process comprising regenerating a used ionic liquid catalyst, recovering conjunct polymer from the regenerated catalyst and using at least a portion of the conjunct polymer is disclosed.
    Type: Grant
    Filed: January 10, 2012
    Date of Patent: March 5, 2013
    Assignee: Chevron U.S.A. Inc.
    Inventors: Saleh A. Elomari, Hye-Kyung C. Timken
  • Patent number: 8247628
    Abstract: A process for reacting an iso-alkane, comprising: a) partially converting one or more olefins in an olefinic feedstock with an ionic liquid catalyst to make a converted olefinic feedstock; and b) alkylating the iso-alkane with the converted olefinic feedstock, wherein a reaction heat that is evolved during the alkylating is at least 20% less than if the alkylating step is done with the iso-alkane and the olefinic feedstock without the partially converting step. Also, a process for reacting an iso-alkane, comprising: a) partially converting one or more olefins in an olefinic feedstock to make a converted olefinic feedstock, wherein the converting is different from isomerization; b) isolating from the converted olefinic feedstock: i. an enriched feed that has linear internal olefins, and ii. products having a boiling point of 150° C. or higher; and c) alkylating the iso-alkane with the enriched feed to make an alkylate gasoline blending component.
    Type: Grant
    Filed: November 30, 2009
    Date of Patent: August 21, 2012
    Assignee: Chevron U.S.A. Inc.
    Inventors: Sven Ivar Hommeltoft, Hye-Kyung C. Timken, Steve S. Mathur
  • Patent number: 8222471
    Abstract: We provide a process, comprising oligomerizing one or more olefins having a boiling point less than 82° C. in a presence of an ionic liquid catalyst and one or more C5+ alpha olefins in a reactor to produce a base oil having a kinematic viscosity at 100° C. of 36 mm2/s or higher and a VI greater than 55; and wherein the one or more olefins having the boiling point less than 82° C. comprise greater than 50 wt % of a total mixture of olefins fed to the reactor. We provide a process, comprising oligomerizing olefins having a low boiling point in a presence of an ionic liquid catalyst and a mixture of C5+ alpha olefins derived from waste plastic to produce a base oil having a kinematic viscosity at 40° C. greater than 1100 mm2/s and a VI greater than 55. We also provide a base oil made by the process.
    Type: Grant
    Filed: December 13, 2010
    Date of Patent: July 17, 2012
    Assignee: Chevron U.S.A. Inc.
    Inventors: Saleh Elomari, Stephen J. Miller, Sven Ivar Hommeltoft, Hye-Kyung C. Timken
  • Publication number: 20120165586
    Abstract: Processes for upgrading condensate in a first hydrocarbon stream to provide distillate material may involve ionic liquid catalyzed olefin oligomerization of olefins in the first hydrocarbon stream to provide a first distillate enriched stream, dechlorination of the first distillate enriched stream, hydroprocessing at least one of a second and a third hydrocarbon stream to provide a second distillate enriched stream, and separation of a distillate product from the first and second distillate enriched streams.
    Type: Application
    Filed: December 22, 2010
    Publication date: June 28, 2012
    Inventors: Hye-Kyung C. Timken, Bi-Zeng Zhan
  • Publication number: 20120160740
    Abstract: Ionic liquid catalyzed hydrocarbon conversion processes for upgrading oxygenate containing olefinic hydrocarbon feedstocks may involve treating an oxygenate containing hydrocarbon stream to provide an olefin enriched hydrocarbon stream, which may be contacted with an ionic liquid catalyst under hydrocarbon conversion conditions to provide a converted hydrocarbon stream containing one or more halogenated components; such components may be removed from the converted hydrocarbon stream to provide one or more dechlorinated hydrocarbon products.
    Type: Application
    Filed: December 22, 2010
    Publication date: June 28, 2012
    Inventors: Bi-Zeng Zhan, Sven Ivar Hommeltoft, Hye-Kyung C. Timken