Patents by Inventor Jayant K. Gorawara

Jayant K. Gorawara 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: 10486132
    Abstract: Copper adsorbents which are resistant to the reduction by the components of the synthesis gas at normal operation conditions. The adsorbents are produced by admixing small amounts of an inorganic halide, such as NaCl, to the basic copper carbonate precursor followed by calcination at a temperature sufficient to decompose the carbonate. The introduction of the halide can be also achieved during the forming stage of adsorbent preparation. These reduction resistant copper oxides can be in the form of composites with alumina and are especially useful for purification of synthesis gas and the removal of mercury, arsine, phosphine, as well as hydrogen sulfide.
    Type: Grant
    Filed: April 17, 2018
    Date of Patent: November 26, 2019
    Assignee: UOP LLC
    Inventors: Vladislav I. Kanazirev, Jayant K. Gorawara
  • Patent number: 10450245
    Abstract: This present disclosure relates to processes for removing contaminants from hydrocarbon streams, e.g. removing chlorides, CO2, COS, H2S, AsH3, methanol, mercaptans and other S- or O-containing organic compounds from olefins, paraffins, aromatics, naphthenes and other hydrocarbon streams. The process involves contacting the stream with an adsorbent which comprises a zeolite, an alumina component and a metal component e.g. sodium, in an amount at least 30% of the zeolite's ion exchange capacity.
    Type: Grant
    Filed: October 20, 2017
    Date of Patent: October 22, 2019
    Assignee: UOP LLC
    Inventors: Jayant K. Gorawara, Jason L. Noe, Vladislav I. Kanazirev
  • Patent number: 10329498
    Abstract: A process is presented for the purification of an olefins feed stream to a benzene alkylation unit. The process removes heavy aromatics in an adsorbent system comprising at least two adsorbent units. The unit passes the olefins feed stream to a first adsorbent unit, while the second adsorbent unit is either in regeneration mode, or standby mode. The process switches the feed stream to the second adsorbent unit and displaces the fluid in the second adsorbent unit, while maintaining the flow of the purified feed stream to the benzene alkylation unit.
    Type: Grant
    Filed: October 30, 2018
    Date of Patent: June 25, 2019
  • Patent number: 10329495
    Abstract: A process is presented for the removal of contaminants like oxygenates from hydrocarbons. The contaminant oxygenates are removed from hydrocarbons that may be feed to cracking units. A crude feed stream is fed to a water wash column along with water to remove oxygenates and is subsequently treated with an adsorbent to effectively remove all the oxygenates from the crude hydrocarbon. A regenerant medium from a naphtha hydrotreating unit is used to regenerate the adsorbent.
    Type: Grant
    Filed: August 11, 2017
    Date of Patent: June 25, 2019
  • Publication number: 20190062648
    Abstract: A process is presented for the purification of an olefins feed stream to a benzene alkylation unit. The process removes heavy aromatics in an adsorbent system comprising at least two adsorbent units. The unit passes the olefins feed stream to a first adsorbent unit, while the second adsorbent unit is either in regeneration mode, or standby mode. The process switches the feed stream to the second adsorbent unit and displaces the fluid in the second adsorbent unit, while maintaining the flow of the purified feed stream to the benzene alkylation unit.
    Type: Application
    Filed: October 30, 2018
    Publication date: February 28, 2019
  • Patent number: 10167241
    Abstract: A process is presented for the purification of an olefins feed stream to a benzene alkylation unit. The process removes heavy aromatics in a two adsorbent unit system. The unit passes the olefins feed stream to a first adsorbent unit, while the second adsorbent unit is either in regeneration mode, or standby mode. The process switches the feed stream to the second adsorbent unit and displaces the fluid in the second adsorbent unit, while maintaining the flow of the purified feed stream to the benzene alkylation unit.
    Type: Grant
    Filed: May 23, 2018
    Date of Patent: January 1, 2019
  • Publication number: 20180273855
    Abstract: A process is presented for the removal of contaminants like sulfur compounds from hydrocarbons. The sulfur compounds are removed from hydrocarbons that may be a feed to cracking units. A feed stream is treated with a clinoptilolite or a barium exchanged zeolite adsorbent to effectively remove carbon disulfides from the feed hydrocarbon. The adsorbent may be regenerated by a hydrogen stream, a hydrocarbon stream or a mixture thereof.
    Type: Application
    Filed: May 25, 2018
    Publication date: September 27, 2018
  • Publication number: 20180265432
    Abstract: A process is presented for the purification of an olefins feed stream to a benzene alkylation unit. The process removes heavy aromatics in a two adsorbent unit system. The unit passes the olefins feed stream to a first adsorbent unit, while the second adsorbent unit is either in regeneration mode, or standby mode. The process switches the feed stream to the second adsorbent unit and displaces the fluid in the second adsorbent unit, while maintaining the flow of the purified feed stream to the benzene alkylation unit.
    Type: Application
    Filed: May 23, 2018
    Publication date: September 20, 2018
  • Publication number: 20180245006
    Abstract: Copper sorbents which are resistant to the reduction by hydrogen are used as a guard bed for an acetylene conversion zone. The adsorbents include cuprous oxide, cupric oxide, copper metal, and a halide and are pre-reduced prior to be loaded into the guard bed. The sorbents can remove contaminants that would poison selective hydrogenation catalysts used for a selectively hydrogenating acetylenic compounds in an olefin stream. The sorbents may also selectively hydrogenate the acetylenic compounds.
    Type: Application
    Filed: May 2, 2018
    Publication date: August 30, 2018
  • Patent number: 10052580
    Abstract: Methods for operating an adsorption separation zone are described. A trim bed is used with two adsorption beds in a swing bed arrangement. The trim bed will catch small amounts of treated feed remaining in the adsorption bed during the switch over from the spent adsorption bed to the fresh adsorption bed. In addition, any adsorbed material that desorbs from the spent adsorption bed during the displacement step of regeneration would be adsorbed onto the trim bed.
    Type: Grant
    Filed: August 24, 2017
    Date of Patent: August 21, 2018
  • Publication number: 20180229211
    Abstract: Copper adsorbents which are resistant to the reduction by the components of the synthesis gas at normal operation conditions. The adsorbents are produced by admixing small amounts of an inorganic halide, such as NaCl, to the basic copper carbonate precursor followed by calcination at a temperature sufficient to decompose the carbonate. The introduction of the halide can be also achieved during the forming stage of adsorbent preparation. These reduction resistant copper oxides can be in the form of composites with alumina and are especially useful for purification of synthesis gas and the removal of mercury, arsine, phosphine, as well as hydrogen sulfide.
    Type: Application
    Filed: April 17, 2018
    Publication date: August 16, 2018
  • Publication number: 20180178159
    Abstract: Methods for operating an adsorption separation zone are described. A trim bed is used with two adsorption beds in a swing bed arrangement. The trim bed will catch small amounts of treated feed remaining in the adsorption bed during the switch over from the spent adsorption bed to the fresh adsorption bed. In addition, any adsorbed material that desorbs from the spent adsorption bed during the displacement step of regeneration would be adsorbed onto the trim bed.
    Type: Application
    Filed: August 24, 2017
    Publication date: June 28, 2018
  • Patent number: 10005968
    Abstract: A process is presented for the removal of contaminants like sulfur compounds from hydrocarbons. The sulfur compounds are removed from hydrocarbons that may be a feed to cracking units. A feed stream is treated with a clinoptilolite or a barium exchanged zeolite adsorbent to effectively remove carbon disulfides from the feed hydrocarbon. The adsorbent may be regenerated by a hydrogen stream, a hydrocarbon stream or a mixture thereof.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: June 26, 2018
  • Patent number: 9962682
    Abstract: A process for the providing a regenerant gas stream for a regenerable adsorbent used to remove water and hydrogen sulfide from a reactor effluent in a catalytic dehydrogenation process is described. The reactor effluent is compressed in a compressor to provide a compressed effluent. The compressed effluent may be treated to remove chlorides, and then passed to a dryer zone having a regenerable adsorbent. A regenerant gas stream is used to desorb the water and hydrogen sulfide and the spent regenerant stream may be passed to a cleaning zone having a sorbent configured to remove hydrogen sulfide from the spent regenerant stream. The cleaned regenerant gas stream may be recycled to the dryer zone to desorb and/or regenerate the regenerable adsorbent.
    Type: Grant
    Filed: November 8, 2016
    Date of Patent: May 8, 2018
  • Publication number: 20180119029
    Abstract: A process is presented for the removal of contaminants like oxygenates from hydrocarbons. The contaminant oxygenates are removed from hydrocarbons that may be feed to cracking units. A crude feed stream is fed to a water wash column along with water to remove oxygenates and is subsequently treated with an adsorbent to effectively remove all the oxygenates from the crude hydrocarbon. A regenerant medium from a naphtha hydrotreating unit is used to regenerate the adsorbent.
    Type: Application
    Filed: August 11, 2017
    Publication date: May 3, 2018
  • Publication number: 20180057427
    Abstract: This present disclosure relates to processes for removing contaminants from hydrocarbon streams, e.g. removing chlorides, CO2, COS, H2S, AsH3, methanol, mercaptans and other S- or O-containing organic compounds from olefins, paraffins, aromatics, naphthenes and other hydrocarbon streams. The process involves contacting the stream with an adsorbent which comprises a zeolite, an alumina component and a metal component e.g. sodium, in an amount at least 30% of the zeolite's ion exchange capacity.
    Type: Application
    Filed: October 20, 2017
    Publication date: March 1, 2018
  • Patent number: 9718747
    Abstract: A process for removal of trace chloride contaminants from a reactor effluent in a catalytic dehydrogenation process is described. The reactor effluent is compressed in a compressor to provide a compressed effluent. The compressed effluent is introduced from the compressor into a chloride treater. In the chloride treater, trace chloride contaminants in the compressed effluent are adsorbed to provide a treated effluent. The treated effluent is cooled in a cooler.
    Type: Grant
    Filed: June 19, 2013
    Date of Patent: August 1, 2017
  • Patent number: 9670422
    Abstract: The invention relates to a process for removing and recovering mercury, an impurity, from a hydrocarbon feedstream containing oxygen, such as introduced during hydraulic fracturing. Mercury is selectively removed to very low levels of concentration from fluid streams such as natural gas, cracked gas, hydrogen or naphtha by passage of the stream through an adsorbent bed containing particles of a zeolitic molecular sieve preferably having pore diameters of at least 3.0 angstroms and in which the zeolite crystallites are formed into an aggregate (cylindrical or beads) which contain ionic or elemental silver. These adsorbent particles maintain their capacity for removal of mercury despite the presence of oxygen.
    Type: Grant
    Filed: November 20, 2014
    Date of Patent: June 6, 2017
  • Publication number: 20170073589
    Abstract: A process is presented for the removal of contaminants like sulfur compounds from hydrocarbons. The sulfur compounds are removed from hydrocarbons that may be a feed to cracking units. A feed stream is treated with a clinoptilolite or a barium exchanged zeolite adsorbent to effectively remove carbon disulfides from the feed hydrocarbon. The adsorbent may be regenerated by a hydrogen stream, a hydrocarbon stream or a mixture thereof.
    Type: Application
    Filed: September 16, 2016
    Publication date: March 16, 2017
  • Publication number: 20170050176
    Abstract: A process for the providing a regenerant gas stream for a regenerable adsorbent used to remove water and hydrogen sulfide from a reactor effluent in a catalytic dehydrogenation process is described. The reactor effluent is compressed in a compressor to provide a compressed effluent. The compressed effluent may be treated to remove chlorides, and then passed to a dryer zone having a regenerable adsorbent. A regenerant gas stream is used to desorb the water and hydrogen sulfide and the spent regenerant stream may be passed to a cleaning zone having a sorbent configured to remove hydrogen sulfide from the spent regenerant stream. The cleaned regenerant gas stream may be recycled to the dryer zone to desorb and/or regenerate the regenerable adsorbent.
    Type: Application
    Filed: November 8, 2016
    Publication date: February 23, 2017