Patents by Inventor Leonid Bresler

Leonid Bresler 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: 10822291
    Abstract: Processes and apparatuses for producing a C8 aromatic isomer product are provided. The processes comprise introducing a raffinate product stream comprising C8 aromatic isomers to an isomerization unit to provide an isomerized stream. The isomerized stream is separated to provide a first stream comprising C8 naphthenes and C7 aromatic hydrocarbons and a second stream comprising C8 aromatic isomers. The first stream is passed to an extractive distillation column to provide a recycle feedstream comprising the C8 naphthenes and an extract stream comprising the C7 aromatic hydrocarbons. The recycle feedstream is passed to the isomerization unit.
    Type: Grant
    Filed: July 18, 2018
    Date of Patent: November 3, 2020
    Assignee: UOP LLC
    Inventors: Jason T. Corradi, Patrick C. Whitchurch, Abhishek M. Pednekar, Leonid Bresler, Anton N. Mlinar
  • Patent number: 10427993
    Abstract: A process for separating xylene from a feedstock in which the feedstock is separated into a xylene stream, a benzene rich stream and a light ends stream. Two separation zones may be utilized in which liquid from both is sent to a compression zone and the vapor from the compression zone is combined with a stream prior to the stream entering the second separation zone.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: October 1, 2019
    Assignee: UOP LLC
    Inventors: Leonid Bresler, Patrick C. Whitchurch, Jason T. Corradi
  • Publication number: 20190062237
    Abstract: A process for separating xylene from a feedstock in which the feedstock is separated into a xylene stream, a benzene rich stream and a light ends stream. Two separation zones may be utilized in which liquid from both is sent to a compression zone and the vapor from the compression zone is combined with a stream prior to the stream entering the second separation zone.
    Type: Application
    Filed: August 31, 2017
    Publication date: February 28, 2019
    Inventors: Leonid Bresler, Patrick C. Whitchurch, Jason T. Corradi
  • Publication number: 20190003343
    Abstract: The present invention relates to a process and apparatus for using a waste heat stream in an aromatics complex. More specifically, the present invention relates to a process and apparatus for using waste heat to drive multiple compressor services within an aromatics complex to achieve energy savings and provide low grade heat that is otherwise wasted.
    Type: Application
    Filed: June 21, 2018
    Publication date: January 3, 2019
    Inventors: Donald A. Eizenga, Michael R. Van de Cotte, Leonid Bresler, Jason T. Corradi
  • Publication number: 20180319724
    Abstract: Processes and apparatuses for producing a C8 aromatic isomer product are provided. The processes comprise introducing a raffinate product stream comprising C8 aromatic isomers to an isomerization unit to provide an isomerized stream. The isomerized stream is separated to provide a first stream comprising C8 naphthenes and C7 aromatic hydrocarbons and a second stream comprising C8 aromatic isomers. The first stream is passed to an extractive distillation column to provide a recycle feedstream comprising the C8 naphthenes and an extract stream comprising the C7 aromatic hydrocarbons. The recycle feedstream is passed to the isomerization unit.
    Type: Application
    Filed: July 18, 2018
    Publication date: November 8, 2018
    Inventors: Jason T. Corradi, Patrick C. Whitchurch, Abhishek M. Pednekar, Leonid Bresler, Anton N. Mlinar
  • Patent number: 9738576
    Abstract: A process and system for the production of at least one xylene isomer is provided. The process includes passing a first stream to one side of a split shell fractionation column and a second stream to the other side of the column. The first stream has a higher ratio of methyl to C2+ alkyl-substituted C9 aromatic compounds than the second stream. A bottoms stream from the one side is separated and passed as feed to a transalkylation zone.
    Type: Grant
    Filed: June 11, 2014
    Date of Patent: August 22, 2017
    Assignee: UOP LLC
    Inventors: Jason T. Corradi, Leonid Bresler
  • Publication number: 20150065768
    Abstract: Methods and systems are provided for producing a xylene product. The method includes fractionating a feed stream in a feed fractionator to produce a feed bottoms stream and a feed overhead stream. The feed stream includes aromatic compounds and non-aromatic compounds, and more than 5 weight percent of the non-aromatic compounds have a boiling point above 105° C. at one atmosphere of pressure. The feed bottoms stream is de-ethylated in a heavy aromatics conversion zone to produce a de-ethylated aromatics stream and a light gases stream, where non-aromatic compounds are converted to light gases in the light gases stream. The de-ethylated aromatics stream is fractionated to produce a heavy aromatics stream and an intermediate aromatics stream, and a desired isomer stream is recovered from the intermediate aromatics stream and an isomerized stream in an isomer recovery process.
    Type: Application
    Filed: August 29, 2013
    Publication date: March 5, 2015
    Applicant: UOP LLC
    Inventors: Leonid Bresler, Robert B. Larson, John B. Robertson
  • Publication number: 20150037223
    Abstract: A process and system for the production of at least one xylene isomer is provided. The process includes passing a first stream to one side of a split shell fractionation column and a second stream to the other side of the column. The first stream has a higher ratio of methyl to C2+ alkyl-substituted C9 aromatic compounds than the second stream. A bottoms stream from the one side is separated and passed as feed to a transalkylation zone.
    Type: Application
    Filed: June 11, 2014
    Publication date: February 5, 2015
    Inventors: Jason T. Corradi, Leonid Bresler
  • Publication number: 20150038755
    Abstract: A process and system for the production of at least one xylene isomer is provided. The process includes passing a first stream to one side of a split shell fractionation column and a second stream to the other side of the column. The first stream has a higher ratio of methyl to C2+ alkyl-substituted C9 aromatic compounds than the second stream. A bottoms stream from the one side is separated and passed as feed to a transalkylation zone.
    Type: Application
    Filed: June 11, 2014
    Publication date: February 5, 2015
    Inventors: Jason T. Corradi, Leonid Bresler
  • Patent number: 8388732
    Abstract: The present invention relates to an integrated membrane/adsorbent process and system for removal of carbon dioxide from natural gas on a ship that houses natural gas purification equipment. Additional membrane units or adsorbent beds are used to reduce the amount of product gas that is lost in gas streams that are used to regenerate the adsorbent beds. These systems produce a product stream that meets the specifications of less than 50 parts per million carbon dioxide in natural gas for liquefaction.
    Type: Grant
    Filed: May 11, 2011
    Date of Patent: March 5, 2013
    Assignee: UOP LLC
    Inventors: Shain-Jer Doong, Lubo Zhou, Dennis J. Bellville, Mark E. Schott, Leonid Bresler, John M. Foresman
  • Patent number: 8337593
    Abstract: One exemplary embodiment can be a process for purifying a natural gas by using first and second adsorbers. The process may include passing a feed including the natural gas through the first adsorber to obtain a purified natural gas product, regenerating the second adsorber in a heating stage, and regenerating the second adsorber in a cooling stage. The heating stage may include separating a portion of the feed comprised in a regeneration gas, passing the regeneration gas to a dryer for removing water, heating the regeneration gas with a heater after exiting the dryer, and passing the regeneration gas to the second adsorber to regenerate the second adsorber. The cooling stage may include expelling at initiation of cooling at least a part of a fluid present in the second adsorber to the dryer to desorb water from a molecular sieve in the dryer, and cooling the second adsorber by circulating the regeneration gas bypassing the heater.
    Type: Grant
    Filed: August 18, 2010
    Date of Patent: December 25, 2012
    Assignee: UOP LLC
    Inventors: Leonid Bresler, Cedric Freeman, Keith R. Clark
  • Patent number: 8323581
    Abstract: The apparatus includes at least two adsorptive separation zones to separate para-xylene from a feed stream comprising C8 aromatic hydrocarbons and at least one C9 aromatic hydrocarbon component. The first adsorptive separation zone delivers a raffinate stream to a raffinate distillation zone and an extract stream to an extract distillation zone. The raffinate distillation zone delivers a stream to the second adsorptive separation zone and at least one of the extract distillation zone and raffinate distillation zone delivers a recycle stream to the first adsorptive separation zone.
    Type: Grant
    Filed: May 26, 2011
    Date of Patent: December 4, 2012
    Assignee: UOP LLC
    Inventors: Leonid Bresler, Stanley J. Frey
  • Patent number: 8282707
    Abstract: The present invention relates to an integrated membrane/absorbent/adsorbent process and system for removal of mercury and sulfur compounds from natural gas on a ship that houses natural gas purification equipment. First mercury and most of the sulfur compounds are removed by an adsorbent bed and then the natural gas stream passes through a membrane unit to produce a partially purified natural gas residue stream to be dried and then liquefied and a carbon dioxide permeate stream that can be used as a fuel gas.
    Type: Grant
    Filed: May 19, 2011
    Date of Patent: October 9, 2012
    Assignee: UOP LLC
    Inventors: Leonid Bresler, John M. Foresman, William I. Echt, Mark E. Schott
  • Patent number: 8211213
    Abstract: The invention involves a process for maintaining a low level of carbon monoxide in a carbon dioxide product stream and also for keeping the carbon monoxide out of the fully shifted synthesis gas. The overall process is a process for treating both fully shifted and partially shifted or unshifted synthesis gas. The carbon monoxide is separately removed by a carbon monoxide stripping column and returned to the partially shifted or unshifted synthesis gas which can then undergo a shift reaction to convert the carbon monoxide to carbon dioxide.
    Type: Grant
    Filed: December 7, 2009
    Date of Patent: July 3, 2012
    Assignee: UOP LLC
    Inventors: William J. Lechnick, Leonid Bresler, Nagaraju Palla
  • Patent number: 8198502
    Abstract: The invention is an adsorptive separation process for producing a para-xylene product from a feed stream comprising para-xylene, at least one other C8 aromatic, and a C9 aromatic. An adsorbent comprising X or Y zeolite and a desorbent comprising para-diethylbenzene (p-DEB) are used in an adsorptive separation zone to produce an extract stream comprising para-xylene, p-DEB, and the C9 aromatic and a raffinate stream comprising the at least one other C8 aromatic, the C9 aromatic, and p-DEB. The extract stream is separated in an extract distillation zone to produce a second desorbent stream comprising the C9 aromatic and p-DEB and the raffinate stream is separated in a raffinate distillation zone to produce a third desorbent stream comprising the C9 aromatic and p-DEB. At least a portion of at least one of the second desorbent stream and the third desorbent stream is further separated in a desorbent distillation zone to produce a stream comprising the C9 aromatic.
    Type: Grant
    Filed: March 8, 2010
    Date of Patent: June 12, 2012
    Assignee: UOP LLC
    Inventors: Leonid Bresler, Stanley J. Frey
  • Publication number: 20120042689
    Abstract: One exemplary embodiment can be a process for purifying a natural gas by using first and second adsorbers. The process may include passing a feed including the natural gas through the first adsorber to obtain a purified natural gas product, regenerating the second adsorber in a heating stage, and regenerating the second adsorber in a cooling stage. The heating stage may include separating a portion of the feed comprised in a regeneration gas, passing the regeneration gas to a dryer for removing water, heating the regeneration gas with a heater after exiting the dryer, and passing the regeneration gas to the second adsorber to regenerate the second adsorber. The cooling stage may include expelling at initiation of cooling at least a part of a fluid present in the second adsorber to the dryer to desorb water from a molecular sieve in the dryer, and cooling the second adsorber by circulating the regeneration gas bypassing the heater.
    Type: Application
    Filed: August 18, 2010
    Publication date: February 23, 2012
    Applicant: UOP, LLC
    Inventors: Leonid Bresler, Cedric Freeman, Keith R. Clark
  • Publication number: 20120000359
    Abstract: The present invention relates to an integrated membrane/absorbent/adsorbent process and system for removal of mercury and sulfur compounds from natural gas on a ship that houses natural gas purification equipment. First mercury and most of the sulfur compounds are removed by an adsorbent bed and then the natural gas stream passes through a membrane unit to produce a partially purified natural gas residue stream to be dried and then liquefied and a carbon dioxide permeate stream that can be used as a fuel gas.
    Type: Application
    Filed: May 19, 2011
    Publication date: January 5, 2012
    Applicant: UOP LLC
    Inventors: Leonid Bresler, John M. Foresman, William I. Echt, Mark E. Schott
  • Publication number: 20110315010
    Abstract: The present invention relates to an integrated membrane/adsorbent process and system for removal of carbon dioxide from natural gas on a ship that houses natural gas purification equipment. Additional membrane units or adsorbent beds are used to reduce the amount of product gas that is lost in gas streams that are used to regenerate the adsorbent beds. These systems produce a product stream that meets the specifications of less than 50 parts per million carbon dioxide in natural gas for liquefaction.
    Type: Application
    Filed: May 11, 2011
    Publication date: December 29, 2011
    Applicant: UOP LLC
    Inventors: Shain-Jer Doong, Lubo Zhou, Dennis J. Bellville, Mark E. Schott, Leonid Bresler, John M. Foresman
  • Publication number: 20110226604
    Abstract: The apparatus includes at least two adsorptive separation zones to separate para-xylene from a feed stream comprising C8 aromatic hydrocarbons and at least one C9 aromatic hydrocarbon component. The first adsorptive separation zone delivers a raffinate stream to a raffinate distillation zone and an extract stream to an extract distillation zone. The raffinate distillation zone delivers a stream to the second adsorptive separation zone and at least one of the extract distillation zone and raffinate distillation zone delivers a recycle stream to the first adsorptive separation zone.
    Type: Application
    Filed: May 26, 2011
    Publication date: September 22, 2011
    Applicant: UOP LLC
    Inventors: Leonid Bresler, Stanley J. Frey
  • Patent number: 7972568
    Abstract: The apparatus includes at least two adsorptive separation zones to separate para-xylene from a feed stream comprising C8 aromatic hydrocarbons and at least one C9 aromatic hydrocarbon component. The first adsorptive separation zone delivers a raffinate stream to a raffinate distillation zone and an extract stream to an extract distillation zone. The raffinate distillation zone delivers a stream to the second adsorptive separation zone and at least one of the extract distillation zone and raffinate distillation zone delivers a recycle stream to the first adsorptive separation zone.
    Type: Grant
    Filed: June 26, 2008
    Date of Patent: July 5, 2011
    Assignee: UOP LLC
    Inventors: Leonid Bresler, Stanley J. Frey