Patents by Inventor Lev Davydov

Lev Davydov 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: 20200101432
    Abstract: This present disclosure relates to apparatuses for methylation of aromatics in an aromatics complex for producing a xylene isomer product. More specifically, the present disclosure relates to the use of riser slip reduction technology to improve the methanol feed and catalyst contacting which will improve the product yield rate.
    Type: Application
    Filed: September 28, 2018
    Publication date: April 2, 2020
    Inventor: Lev Davydov
  • Patent number: 10239054
    Abstract: A counter-current catalyst regenerator with at least two stages of counter-current contact along with a regenerator riser is proposed. Each stage may comprise a permeable barrier that allows upward passage of oxygen-containing gas and downward passage of coked catalyst into each stage, but inhibits upward movement of catalyst to mitigate back mixing and approximate true counter-current contact and efficient combustion of coke from catalyst. The regenerator riser may provide a passage to transport the catalyst and may serve as a secondary stage for coke combustion to provide the regenerated catalyst.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: March 26, 2019
    Assignee: UPO LLC
    Inventors: Lev Davydov, Michael S. Sandacz, Paolo Palmas, Zhihao Fei, Matthew Lippmann
  • Patent number: 10071357
    Abstract: A process and apparatus for combusting coke from catalyst two stages is disclosed. Catalyst and flue gas from a lower chamber ascends to an upper chamber to be roughly separated by swirl ducts extending from a combustion conduit. The swirl ducts may discharge into a container in the upper chamber.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: September 11, 2018
    Assignee: UOP LLC
    Inventors: Robert L. Mehlberg, Paolo Palmas, Michael A. Stine, Lev Davydov
  • Publication number: 20180243715
    Abstract: A process and apparatus for combusting coke from catalyst two stages is disclosed. Catalyst and flue gas from a lower chamber ascends to an upper chamber to be roughly separated by swirl ducts extending from a combustion conduit. The swirl ducts may discharge into a container in the upper chamber.
    Type: Application
    Filed: February 28, 2017
    Publication date: August 30, 2018
    Inventors: Robert L. Mehlberg, Paolo Palmas, Michael A. Stine, Lev Davydov
  • Publication number: 20180178179
    Abstract: A counter-current catalyst regenerator with at least two stages of counter-current contact along with a regenerator riser is proposed. Each stage may comprise a permeable barrier that allows upward passage of oxygen-containing gas and downward passage of coked catalyst into each stage, but inhibits upward movement of catalyst to mitigate back mixing and approximate true counter-current contact and efficient combustion of coke from catalyst. The regenerator riser may provide a passage to transport the catalyst and may serve as a secondary stage for coke combustion to provide the regenerated catalyst.
    Type: Application
    Filed: November 30, 2017
    Publication date: June 28, 2018
    Inventors: Lev Davydov, Michael S. Sandacz, Paolo Palmas, Zhihao Fei, Matthew Lippmann
  • Publication number: 20180178208
    Abstract: A counter-current catalyst regenerator with at least two stages of counter-current contact along with a regenerator riser is proposed. Each stage may comprise a permeable barrier that allows upward passage of oxygen-containing gas and downward passage of coked catalyst into each stage, but inhibits upward movement of catalyst to mitigate back mixing and approximate true counter-current contact and efficient combustion of coke from catalyst. The regenerator riser may provide a passage to transport the catalyst and may serve as a secondary stage for coke combustion to provide the regenerated catalyst.
    Type: Application
    Filed: November 30, 2017
    Publication date: June 28, 2018
    Inventors: Lev Davydov, Michael S. Sandacz, Paolo Palmas, Zhihao Fei, Matthew Lippmann
  • Patent number: 9981261
    Abstract: A process and apparatus for combusting coke from catalyst two stages is disclosed. Catalyst and flue gas from a lower chamber ascends to an upper chamber to be roughly separated by swirl ducts extending from a combustion conduit. The swirl ducts may discharge into a container in the upper chamber.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: May 29, 2018
    Assignee: UOP LLC
    Inventors: Robert L. Mehlberg, Paolo Palmas, Michael A. Stine, Lev Davydov
  • Patent number: 9914090
    Abstract: Vapor-liquid contacting apparatuses and methods for removing contaminants from gas streams are provided. In an embodiment, a vapor-liquid contacting apparatus includes a vortex contacting stage having a contacting zone bound by a wall and defining an axis, a radially inner region surrounding the axis, and a radially outer region adjacent the wall. The vapor-liquid contacting apparatus also includes a feed conduit configured to direct flow of a feed gas into the radially outer region of the contacting zone in a direction tangential to the axis to form a vortex. Further, the vapor-liquid contacting apparatus includes a liquid conduit configured to deliver a liquid absorbent stream to the radially inner region in the contacting zone.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: March 13, 2018
    Assignee: UOP LLC
    Inventors: Lev Davydov, Xiaoming Wen, Lubo Zhou
  • Patent number: 9890338
    Abstract: A process and apparatus is for recycling LCO and/or HCO to an FCC unit to recover additional distillate. Spent catalyst recycle in the FCC unit may be used to improve distillate yield. A hydroprocessing zone may saturate cycle oil aromatics for cracking in an FCC unit. The recycle cracked stream may be recycled to a downstream hydroprocessing zone to avoid a first hydroprocessing zone for hydrotreating feed to the FCC unit. Additional recovery of cycle oil for recycle is obtained by heating slurry oil prior to vacuum separation.
    Type: Grant
    Filed: March 10, 2015
    Date of Patent: February 13, 2018
    Assignee: UOP LLC
    Inventor: Lev Davydov
  • Patent number: 9783749
    Abstract: A process and apparatus is for recycling LCO and/or HCO to an FCC unit to recover additional distillate. Spent catalyst recycle in the FCC unit may be used to improve distillate yield. A hydroprocessing zone may saturate cycle oil aromatics for cracking in an FCC unit. The recycle cracked stream may be recycled to a downstream hydroprocessing zone to avoid a first hydroprocessing zone for hydrotreating feed to the FCC unit. Additional recovery of cycle oil for recycle is obtained by heating slurry oil prior to vacuum separation.
    Type: Grant
    Filed: March 10, 2015
    Date of Patent: October 10, 2017
    Assignee: UOP LLC
    Inventor: Lev Davydov
  • Patent number: 9777229
    Abstract: A process and apparatus is for recycling LCO and/or HCO to an FCC unit to recover additional distillate. Spent catalyst recycle in the FCC unit may be used to improve distillate yield. A hydroprocessing zone may saturate cycle oil aromatics for cracking in an FCC unit. The recycle cracked stream may be recycled to a downstream hydroprocessing zone to avoid a first hydroprocessing zone for hydrotreating feed to the FCC unit. Additional recovery of cycle oil for recycle is obtained by heating slurry oil prior to vacuum separation.
    Type: Grant
    Filed: March 10, 2015
    Date of Patent: October 3, 2017
    Assignee: UOP LLC
    Inventor: Lev Davydov
  • Patent number: 9777228
    Abstract: A process and apparatus is for recycling HCO and/or naphtha from a first FCC unit to a second FCC unit to recover additional distillate and/or light olefins. A first catalyst stream for the first FCC unit may be isolated from a second catalyst stream for the second FCC unit. Fractionation of second cracked products from the second FCC unit may be separate from fractionation of first cracked products from the first FCC unit.
    Type: Grant
    Filed: May 3, 2016
    Date of Patent: October 3, 2017
    Assignee: UOP LLC
    Inventor: Lev Davydov
  • Patent number: 9732290
    Abstract: A process and apparatus is for recycling LCO and/or HCO to an FCC unit to recover additional distillate. Spent catalyst recycle in the FCC unit may be used to improve distillate yield. A hydroprocessing zone may saturate cycle oil aromatics for cracking in an FCC unit. The recycle cracked stream may be recycled to a downstream hydroprocessing zone to avoid a first hydroprocessing zone for hydrotreating feed to the FCC unit. Additional recovery of cycle oil for recycle is obtained by heating slurry oil prior to vacuum separation.
    Type: Grant
    Filed: March 10, 2015
    Date of Patent: August 15, 2017
    Assignee: UOP LLC
    Inventor: Lev Davydov
  • Publication number: 20170002274
    Abstract: A process and apparatus is for recycling HCO and/or naphtha from a first FCC unit to a second FCC unit to recover additional distillate and/or light olefins. A first catalyst stream for the first FCC unit may be isolated from a second catalyst stream for the second FCC unit. Fractionation of second cracked products from the second FCC unit may be separate from fractionation of first cracked products from the first FCC unit.
    Type: Application
    Filed: May 3, 2016
    Publication date: January 5, 2017
    Inventor: Lev Davydov
  • Patent number: 9527054
    Abstract: Methods and apparatuses are provided for cracking a hydrocarbon. The method includes contacting a first hydrocarbon stream with a first cracking catalyst at a first cracking temperature in a first riser to produce a first riser effluent and a first spent catalyst. A second hydrocarbon stream is contacted with a second cracking catalyst at a second cracking temperature in a second riser to produce a second riser effluent and a second spent catalyst, where the second cracking temperature is less than the first cracking temperature. The first riser effluent and the second riser effluent are combined to produce a mixed riser effluent, and the mixed riser effluent is fractionated in a fractionation zone to produce a light cycle oil. The first spent catalyst and the second spent catalyst are combined in a reactor to produce a mixed spent catalyst.
    Type: Grant
    Filed: May 9, 2014
    Date of Patent: December 27, 2016
    Assignee: UOP LLC
    Inventors: Trung Pham, Lev Davydov, Lance Awender Baird
  • Patent number: 9457294
    Abstract: One exemplary embodiment can be an apparatus for contacting a first liquid and a second liquid. The apparatus can include a vessel. The vessel can include a wall and a funnical frustum. The wall may form a perimeter about an interior space and include a first side and a second side forming a passageway communicating at least one of the first and second liquids to the interior space. The funnical frustum may be positioned proximate to the passageway and abut the wall for facilitating contacting of the first and second liquids.
    Type: Grant
    Filed: December 10, 2012
    Date of Patent: October 4, 2016
    Assignees: UOP LLC, BORESKOV INSTITUTE OF CATALYSIS
    Inventors: Andrey Kuzmin, Aziz Sattar, Lev Davydov
  • Patent number: 9458068
    Abstract: One exemplary embodiment can be a process for removing one or more sulfur compounds from a first liquid. The process can include passing the first liquid through a first inlet and a second liquid through a second inlet of a vessel, passing the first and second liquids through the passageway for facilitating contacting of the first and second liquids to extract the one or more sulfur compounds from the first liquid to the second liquid, and passing the first liquid through the first outlet and the second liquid through the second outlet. Often, the vessel has a plurality of vortex contactors, and a first outlet and a second outlet. The plurality of vortex contactors can include a first vortex contactor, in turn having at least one wall forming a perimeter about an interior region and including a first side and a second side forming a passageway communicating the first liquid from an exterior to the interior region, and a frustum positioned proximate to the passageway and abutting the at least one wall.
    Type: Grant
    Filed: December 10, 2012
    Date of Patent: October 4, 2016
    Assignees: UOP LLC, BORESKOV INSTITUTE OF CATALYSIS
    Inventors: Andrey Kuzmin, Aziz Sattar, Lev Davydov, Jonathan Andrew Tertel
  • Publication number: 20160264887
    Abstract: A process and apparatus is for recycling LCO and/or HCO to an FCC unit to recover additional distillate. Spent catalyst recycle in the FCC unit may be used to improve distillate yield. A hydroprocessing zone may saturate cycle oil aromatics for cracking in an FCC unit. The recycle cracked stream may be recycled to a downstream hydroprocessing zone to avoid a first hydroprocessing zone for hydrotreating feed to the FCC unit. Additional recovery of cycle oil for recycle is obtained by heating slurry oil prior to vacuum separation.
    Type: Application
    Filed: March 10, 2015
    Publication date: September 15, 2016
    Inventor: Lev Davydov
  • Publication number: 20160263544
    Abstract: A process and apparatus is for recycling LCO and/or HCO to an FCC unit to recover additional distillate. Spent catalyst recycle in the FCC unit may be used to improve distillate yield. A hydroprocessing zone may saturate cycle oil aromatics for cracking in an FCC unit. The recycle cracked stream may be recycled to a downstream hydroprocessing zone to avoid a first hydroprocessing zone for hydrotreating feed to the FCC unit. Additional recovery of cycle oil for recycle is obtained by heating slurry oil prior to vacuum separation.
    Type: Application
    Filed: March 10, 2015
    Publication date: September 15, 2016
    Inventor: Lev Davydov
  • Publication number: 20160264888
    Abstract: A process and apparatus is for recycling LCO and/or HCO to an FCC unit to recover additional distillate. Spent catalyst recycle in the FCC unit may be used to improve distillate yield. A hydroprocessing zone may saturate cycle oil aromatics for cracking in an FCC unit. The recycle cracked stream may be recycled to a downstream hydroprocessing zone to avoid a first hydroprocessing zone for hydrotreating feed to the FCC unit. Additional recovery of cycle oil for recycle is obtained by heating slurry oil prior to vacuum separation.
    Type: Application
    Filed: March 10, 2015
    Publication date: September 15, 2016
    Inventor: Lev Davydov