Patents by Inventor Steven F. Zink

Steven F. Zink 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: 20200055024
    Abstract: Catalysts are described. The catalysts comprise a dried extrudate of a mixture of ?-alumina and at least one mixed metal oxide or mixed metal hydroxide, the ?-alumina having a BET surface area of 150 m2/g to 275 m2/g. Processes of making the hydroprocessing catalysts, and hydroprocessing processes using the catalysts are also described.
    Type: Application
    Filed: August 14, 2018
    Publication date: February 20, 2020
    Inventors: Steven F. Zink, Joseph T. Kozlowski
  • Patent number: 10519388
    Abstract: The present invention discloses a process and apparatus for selectively hydrogenating diolefins in a cracked stream. The method combines a conversion unit and a recovery section. The recovery section includes the diolefin hydrogenation reactor that is used to selectively hydrogenate the diolefins in the cracked naphtha. The diolefin depleted naphtha may be debutanized to separate the stabilized naphtha and liquefied petroleum gas streams.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: December 31, 2019
    Assignee: UOP LLC
    Inventors: Steven F. Zink, Krishna Mani, Krishan Pratap Jadaun, Soumendra Mohan Banerjee
  • Patent number: 10443001
    Abstract: A process and apparatus for reducing the sulfur content of naphtha. The process includes introducing at least a portion of a naphtha feed stream to a selective hydrodesulfurization zone under selective hydrodesulfurization conditions in the presence of a selective hydrodesulfurization catalyst to form a low sulfur stream which contains mercaptan and thiophene compounds. At least a portion of the low sulfur stream is separated into at least two streams, a mercaptan rich stream containing mercaptan and thiophene compounds and an overhead stream containing hydrogen sulfide and liquid petroleum gas. The mercaptan rich stream is treated in an adsorbent zone to remove at least a portion of the mercaptan and thiophene compounds to form a mercaptan lean stream.
    Type: Grant
    Filed: August 11, 2017
    Date of Patent: October 15, 2019
    Assignee: UOP LLC
    Inventors: Priyesh Jayendrakumar Jani, Deepak Bisht, Tuhin Suvra Khan, Ram Ganesh Rokkam, Pijus Kanti Roy, Steven F. Zink, Avnish Kumar
  • Publication number: 20190161692
    Abstract: Methods and apparatuses are disclosed for upgrading a hydrocarbon feedstream comprising passing the hydrocarbon feedstream to a first hydroprocessing reactor in a reaction vessel to produce a first hydroprocessed effluent stream. The first hydroprocessed effluent stream is separated in a hot separator to produce a vapor stream and a liquid hydrocarbon stream. At least a portion of the liquid hydrocarbon stream is passed to a second hydroprocessing reactor disposed in the reaction vessel above the first hydroprocessing reactor, to produce a second hydroprocessed effluent stream. A liquid product stream is separated from the second hydroprocessing effluent stream. The vapor stream from the hot separator is mixed with the liquid product stream to provide a combined stream.
    Type: Application
    Filed: November 28, 2017
    Publication date: May 30, 2019
    Inventors: Krishna Mani, Deepak Bisht, Steven F. Zink
  • Publication number: 20180155640
    Abstract: A process for reducing the sulfur content of FCC naphtha is described. The process includes introducing a FCC naphtha feed to a selective hydrogenation zone to form a hydrogenated feed. The hydrogenated feed is separated into light fraction and a heavy fraction. The heavy fraction is introduced into a selective hydrodesulfurization zone to form a desulfurized stream which contains mercaptans. The desulfurized stream is separated into a mercaptan rich stream and a mercaptan lean stream. The mercaptan rich stream is treated with a caustic extraction process, a hydrodesulfurization reaction zone, a selective hydrogenation process, an adsorption process, or an ionic liquid extraction process to remove at least a portion of the mercaptan compounds to form a second mercaptan lean stream.
    Type: Application
    Filed: January 31, 2018
    Publication date: June 7, 2018
    Inventors: Vikrant Vilasrao Dalal, Krishna Mani, Krishan Pratap Jadaun, Steven F. Zink
  • Publication number: 20180119032
    Abstract: A process and apparatus for reducing the sulfur content of naphtha. The process includes introducing at least a portion of a naphtha feed stream to a selective hydrodesulfurization zone under selective hydrodesulfurization conditions in the presence of a selective hydrodesulfurization catalyst to form a low sulfur stream which contains mercaptan and thiophene compounds. At least a portion of the low sulfur stream is separated into at least two streams, a mercaptan rich stream containing mercaptan and thiophene compounds and an overhead stream containing hydrogen sulfide and liquid petroleum gas. The mercaptan rich stream is treated in an adsorbent zone to remove at least a portion of the mercaptan and thiophene compounds to form a mercaptan lean stream.
    Type: Application
    Filed: August 11, 2017
    Publication date: May 3, 2018
    Inventors: Priyesh Jayendrakumar Jani, Deepak Bisht, Tuhin Suvra Khan, Ram Ganesh Rokkam, Pijus Kanti Roy, Steven F. Zink, Avnish Kumar
  • Publication number: 20180044600
    Abstract: The present invention discloses a process and apparatus for selectively hydrogenating diolefins in a cracked stream. The method combines a conversion unit and a recovery section. The recovery section includes the diolefin hydrogenation reactor that is used to selectively hydrogenate the diolefins in the cracked naphtha. The diolefin depleted naphtha may be debutanized to separate the stabilized naphtha and liquefied petroleum gas streams.
    Type: Application
    Filed: October 30, 2017
    Publication date: February 15, 2018
    Inventors: Steven F. Zink, Krishna Mani, Krishan Pratap Jadaun, Soumendra Mohan Banerjee
  • Patent number: 9890335
    Abstract: Methods and apparatus for removing sulfur compounds from a hydrocarbon stream are disclosed. In one exemplary embodiment, a method for removing sulfur compounds from a hydrocarbon stream includes the steps of steam stripping a mixed hydrocarbon stream to form a steam stripped overhead stream comprising naphtha and lighter hydrocarbons and a steam stripped bottoms stream comprising naphtha and heavier hydrocarbons; fractionating the steam stripped bottoms stream to form a fractionated overhead stream comprising naphtha hydrocarbons; combining the steam stripped overhead stream with a portion of the fractionated overhead stream and an H2-rich makeup gas stream; and hydrodesulfurizing the combined stream to form an HDS reaction effluent stream.
    Type: Grant
    Filed: July 22, 2014
    Date of Patent: February 13, 2018
    Assignee: UOP LLC
    Inventors: Steven F. Zink, John Edward Kulach
  • Patent number: 9822317
    Abstract: The process and apparatus of the present invention selectively hydrogenates a heavier olefinic naphtha stream in an upstream catalyst bed and the hydrogenated effluent and a lighter olefinic naphtha stream in a downstream catalyst bed. The heavier di-alkenes are less re-active and are contacted with more hydrogenation catalyst than the lighter di-alkenes which are more re-active.
    Type: Grant
    Filed: October 10, 2014
    Date of Patent: November 21, 2017
    Assignee: UOP LLC
    Inventors: Avnish Kumar, Steven F. Zink, Soumendra M. Banerjee
  • Patent number: 9453167
    Abstract: Methods and apparatuses for processing hydrocarbon streams containing organic nitrogen species are provided. In an embodiment, a method for processing a hydrocarbon stream containing organic nitrogen species includes adding an aqueous acidic solution to a hydrocarbon feed stream to form a reaction stream. The method further includes contacting the reaction stream with a reaction surface and reacting the aqueous acidic solution and the organic nitrogen species to form an ammonium sulfate rich stream and a lean nitrogen naphtha stream. Also, the method includes separating an ammonium sulfate rich aqueous phase and an oil phase from the ammonium sulfate rich stream.
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: September 27, 2016
    Assignee: UOP LLC
    Inventor: Steven F. Zink
  • Patent number: 9434894
    Abstract: A method and apparatus for processing hydrocarbons are described. The method includes fractionating a hydrocarbon stream to form at least two fractions. The first fraction is reformed to form a reformate stream, and the reformate stream is introduced into an aromatics processing zone to produce aromatic products. At least a portion of the second fraction is cracked in a fluid catalytic cracking unit. A selectively hydrogenated light naphtha stream is formed by separating the cracked hydrocarbon stream into at least two streams and selectively hydrogenating the light naphtha stream, or selectively hydrogenating the cracked hydrocarbon stream and separating the hydrogenated cracked hydrocarbon stream into at least two streams. Aromatics are extracted from the selectively hydrogenated light naphtha stream forming an extract stream and a raffinate stream. The extract stream is hydrotreated, sent to the aromatics processing zone to produce additional aromatic products.
    Type: Grant
    Filed: June 19, 2014
    Date of Patent: September 6, 2016
    Assignee: UOP LLC
    Inventors: Robert Mehlberg, Robert Jason Lee Noe, Antoine Negiz, Steven F. Zink
  • Patent number: 9399741
    Abstract: Methods and apparatuses for desulfurizing hydrocarbon streams are provided herein. In one embodiment, a method for desulfurizing a hydrocarbon stream includes separating the hydrocarbon stream into a heavier fraction and a lighter fraction. The heavier fraction includes a relatively higher amount of lower octane mono-unsaturates and the lighter fraction includes a relatively higher amount of higher octane mono-unsaturates. The method further includes hydrodesulfurizing the heavier fraction in a first hydrodesulfurization zone and hydrodesulfurizing the lighter fraction in a second hydrodesulfurization zone. Further, the method forms a hydrodesulfurized stream from the heavier fraction and the lighter fraction.
    Type: Grant
    Filed: October 9, 2013
    Date of Patent: July 26, 2016
    Assignee: UOP LLC
    Inventors: Steven F. Zink, Paul C. Steacy, Peter Kokayeff
  • Patent number: 9393538
    Abstract: The process and apparatus of the present invention selectively hydrogenates a heavier olefinic naphtha stream in an upstream catalyst bed and the hydrogenated effluent and a lighter olefinic naphtha stream in a downstream catalyst bed. The heavier di-alkenes are less re-active and are contacted with more hydrogenation catalyst than the lighter di-alkenes which are more re-active.
    Type: Grant
    Filed: October 10, 2014
    Date of Patent: July 19, 2016
    Assignee: UOP LLC
    Inventors: Avnish Kumar, Steven F. Zink, Soumendra M. Banerjee
  • Publication number: 20160168482
    Abstract: A process for removing sulfur and nitrogen contaminants from a hydrocarbon stream using a Brønsted acid or an ionic liquid and a Brønsted acid is described. The process includes contacting the hydrocarbon stream comprising the contaminant with a Brønsted acid or a hydrocarbon-immiscible ionic liquid and the Brønsted acid to produce a mixture comprising the hydrocarbon and the Brønsted acid comprising at least a portion of the removed contaminant or a hydrocarbon-immiscible ionic liquid comprising at least a portion of the removed contaminant; and separating the mixture to produce a hydrocarbon effluent having a reduced level of the contaminant and a Brønsted acid effluent comprising the Brønsted acid comprising at least the portion of the removed contaminant or a hydrocarbon-immiscible ionic liquid effluent comprising the hydrocarbon-immiscible ionic liquid comprising at least the portion of the removed contaminant.
    Type: Application
    Filed: December 12, 2014
    Publication date: June 16, 2016
    Inventors: Beckay J. Mezza, Alakananda Bhattacharyya, Steven F. Zink, Massimo Sangalli
  • Publication number: 20160102258
    Abstract: The process and apparatus of the present invention selectively hydrogenates a heavier olefinic naphtha stream in an upstream catalyst bed and the hydrogenated effluent and a lighter olefinic naphtha stream in a downstream catalyst bed. The heavier di-alkenes are less re-active and are contacted with more hydrogenation catalyst than the lighter di-alkenes which are more re-active.
    Type: Application
    Filed: October 10, 2014
    Publication date: April 14, 2016
    Inventors: Avnish Kumar, Steven F. Zink, Soumendra M. Banerjee
  • Publication number: 20160101404
    Abstract: The process and apparatus of the present invention selectively hydrogenates a heavier olefinic naphtha stream in an upstream catalyst bed and the hydrogenated effluent and a lighter olefinic naphtha stream in a downstream catalyst bed. The heavier di-alkenes are less re-active and are contacted with more hydrogenation catalyst than the lighter di-alkenes which are more re-active.
    Type: Application
    Filed: October 10, 2014
    Publication date: April 14, 2016
    Inventors: Avnish Kumar, Steven F. Zink, Soumendra M. Banerjee
  • Publication number: 20160024396
    Abstract: Methods and apparatus for removing sulfur compounds from a hydrocarbon stream are disclosed. In one exemplary embodiment, a method for removing sulfur compounds from a hydrocarbon stream includes the steps of steam stripping a mixed hydrocarbon stream to form a steam stripped overhead stream comprising naphtha and lighter hydrocarbons and a steam stripped bottoms stream comprising naphtha and heavier hydrocarbons; fractionating the steam stripped bottoms stream to form a fractionated overhead stream comprising naphtha hydrocarbons; combining the steam stripped overhead stream with a portion of the fractionated overhead stream and an H2-rich makeup gas stream; and hydrodesulfurizing the combined stream to form an HDS reaction effluent stream.
    Type: Application
    Filed: July 22, 2014
    Publication date: January 28, 2016
    Inventors: Steven F. Zink, John Edward Kulach
  • Publication number: 20150368571
    Abstract: A method and apparatus for processing hydrocarbons are described. The method includes fractionating a hydrocarbon stream to form at least two fractions. The first fraction is reformed to form a reformate stream, and the reformate stream is introduced into an aromatics processing zone to produce aromatic products. At least a portion of the second fraction is cracked in a fluid catalytic cracking unit. A selectively hydrogenated light naphtha stream is formed by separating the cracked hydrocarbon stream into at least two streams and selectively hydrogenating the light naphtha stream, or selectively hydrogenating the cracked hydrocarbon stream and separating the hydrogenated cracked hydrocarbon stream into at least two streams. Aromatics are extracted from the selectively hydrogenated light naphtha stream forming an extract stream and a raffinate stream. The extract stream is hydrotreated, sent to the aromatics processing zone to produce additional aromatic products.
    Type: Application
    Filed: June 19, 2014
    Publication date: December 24, 2015
    Inventors: Robert Mehlberg, Robert Jason Lee Noe, Antoine Negiz, Steven F. Zink
  • Patent number: 9074159
    Abstract: Embodiments of a process for improving a re-refined lube oil stream are provided. The process comprises the steps of introducing a gas stream comprising hydrogen (H2) and the re-refined lube oil stream comprising hydroprocessed used lube oil to a hydrogenation reactor that contain Group VIII catalyst. A gas to oil feed ratio rate of from about 30 to about 100 Nm3 H2/m3 is used to introduce the streams to the reactor. The hydroprocessed used lube oil is hydrogenated with the H2 in the reactor such that an effluent is formed containing hydrogenated re-refined lube oil having about 2 wt. % or less of aromatics and about 55 wt. % or less of naphthenes. The reactor is operating at a temperature of from about 250 to about 300° C.
    Type: Grant
    Filed: October 6, 2010
    Date of Patent: July 7, 2015
    Assignee: UOP LLC
    Inventors: Steven F. Zink, Tom Kalnes, Mark VanWees
  • Publication number: 20150096923
    Abstract: Methods and apparatuses for desulfurizing hydrocarbon streams are provided herein. In one embodiment, a method for desulfurizing a hydrocarbon stream includes separating the hydrocarbon stream into a heavier fraction and a lighter fraction. The heavier fraction includes a relatively higher amount of lower octane mono-unsaturates and the lighter fraction includes a relatively higher amount of higher octane mono-unsaturates. The method further includes hydrodesulfurizing the heavier fraction in a first hydrodesulfurization zone and hydrodesulfurizing the lighter fraction in a second hydrodesulfurization zone. Further, the method forms a hydrodesulfurized stream from the heavier fraction and the lighter fraction.
    Type: Application
    Filed: October 9, 2013
    Publication date: April 9, 2015
    Applicant: UOP LLC
    Inventors: Steven F. Zink, Paul C. Steacy, Peter Kokayeff