Patents by Inventor Stuart S. Goldstein

Stuart S. Goldstein 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: 9175233
    Abstract: An improved process for catalytic reformers and their use for the catalytic reforming of petroleum naphthas. More particularly, the invention relates to an improved reformer unit which can be operated at higher throughput relative to compressor size. The invention utilizes pressure swing adsorption to improve the hydrogen content of hydrogen containing streams generated by and utilized in catalytic reforming processes. The invention also has the capability of enabling compressor-limited catalytic reforming units to be operated at increased capacities.
    Type: Grant
    Filed: January 23, 2006
    Date of Patent: November 3, 2015
    Assignee: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Stuart S. Goldstein, John H. Thurtoll, Bal K. Kaul, Greg A. Marshall
  • Patent number: 8668824
    Abstract: This invention relates to process for producing a reformate or gasoline product. The process involves a rapid cycle of reacting hydrocarbon feedstock to form the product and then regenerating the catalyst used in the reaction. The process can be carried out at relatively high liquid hourly space velocities and preferably at relatively low hydrogen to hydrocarbon ratios to produce a reformed product having relatively high liquid yield and hydrogen content.
    Type: Grant
    Filed: November 15, 2010
    Date of Patent: March 11, 2014
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Bal K. Kaul, Abhash Nigam, Jasmina Poturovic, Mohsen N. Harandi, Stuart S. Goldstein
  • Publication number: 20110147270
    Abstract: An improved process for catalytic reformers and their use for the catalytic reforming of petroleum naphthas. More particularly, the invention relates to an improved reformer unit which can be operated at higher throughput relative to compressor size. The invention utilizes pressure swing adsorption to improve the hydrogen content of hydrogen containing streams generated by and utilized in catalytic reforming processes. The invention also has the capability of enabling compressor-limited catalytic reforming units to be operated at increased capacities.
    Type: Application
    Filed: January 23, 2006
    Publication date: June 23, 2011
    Inventors: Stuart S. Goldstein, John H. Thurtoll, Bal K. Kaul, Greg A. Marshall
  • Publication number: 20110147267
    Abstract: This invention relates to process for producing a reformate or gasoline product. The process involves a rapid cycle of reacting hydrocarbon feedstock to form the product and then regenerating the catalyst used in the reaction. The process can be carried out at relatively high liquid hourly space velocities and preferably at relatively low hydrogen to hydrocarbon ratios to produce a reformed product having relatively high liquid yield and hydrogen content.
    Type: Application
    Filed: November 15, 2010
    Publication date: June 23, 2011
    Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Bal K. Kaul, Abhash Nigam, Jasmina Poturovic, Mohsen N. Harandi, Stuart S. Goldstein
  • Publication number: 20040129605
    Abstract: A method for converting a fixed-bed catalytic reformer unit to a moving-bed unit. The fixed bed reactor is converted to a moving bed reactor that has continuous or intermittent catalyst feeding facilities to allow continuous or intermittent addition of fresh or regenerated catalyst to the catalyst inlet of the moving-bed reactor and continuous or intermittent removal of spent catalyst from the catalyst outlet of the moving-bed reactor. The spent catalyst removed from the reactor is regenerated in a non-integrated regenerator which may be an offsite regenerator, a centrally located on-site regenerator which serves several reforming units or a regenerator shared with a second moving bed unit. The moving-bed reactor, the catalyst feeding facilities and the catalyst recovery facilities are operatively connected between themselves and to existing facilities from the fixed bed unit, such as piping, compression and reformer charge handling and heating.
    Type: Application
    Filed: October 22, 2003
    Publication date: July 8, 2004
    Inventors: Stuart S. Goldstein, John H. Thurtell, John W. Viets, Tomas R. Melli, Jason R. Vollbracht
  • Patent number: 5417843
    Abstract: A process for reforming a gasoline boiling range naphtha stream using a reforming process unit comprised of two independent process units, each of which are operated in two stages. The first stage is operated in a fixed-bed mode and is comprised of a plurality of serially connected fixed bed reactors, and the second stage is operated in a moving bed continuous catalyst regeneration mode. A hydrogen-rich stream is recycled through both stages for each process unit and the moving-bed reforming zones share a common regeneration zone.
    Type: Grant
    Filed: May 18, 1994
    Date of Patent: May 23, 1995
    Assignee: Exxon Research & Engineering Co.
    Inventors: Gerrit S. Swart, Stuart S. Goldstein, Paul W. Kamienski, George A. Swan, III
  • Patent number: 5368720
    Abstract: A two stage process for reforming a naphtha feed at low severities with tin modified platinum-iridium catalysts. In particular, both high selectivity, and high activity are manifested by such catalysts in reforming a naphtha feed at low severities in a first fixed-bed reforming stage which is comprised of a series of reforming zones, or reactors; i.e., within the dehydrogenation and ring isomerization zones of a reforming unit. The first stage zones are charged with a tin-containing platinum-iridium catalyst, and the naphtha feed reformed to produce an intermediate RON clear C.sub.5 + liquid reformate. The intermediate octane product of the first reforming stage is passed to a second stage which is comprised of one or more moving-bed reforming zones, or reactors, which are operated in a continuous catalyst regeneration mode with platinum containing catalyst.
    Type: Grant
    Filed: April 13, 1992
    Date of Patent: November 29, 1994
    Assignee: Exxon Research & Engineering Co.
    Inventors: John F. Dolan, Stuart S. Goldstein, George A. Swan, III
  • Patent number: 5354451
    Abstract: A two stage process for catalytically reforming a gasoline boiling range hydrocarbonaceous feedstock. The reforming is conducted in two stages wherein the first stage is operated in a fixed-bed mode, and the second stage is operated in a moving-bed continual catalyst regeneration mode. A gaseous stream comprised of hydrogen and predominantly C.sub.4.sup.-- hydrocarbon gases are separated between stages. A portion of the hydrogen-rich gaseous stream is recycled and the remaining portion along with the C.sub.5.sup.+ stream are sent to second stage reforming.
    Type: Grant
    Filed: December 9, 1991
    Date of Patent: October 11, 1994
    Assignee: Exxon Research and Engineering Company
    Inventors: Stuart S. Goldstein, Paul W. Kamienski, David W. Staubs, Gerrit S. Swart, George A. Swan, III
  • Patent number: 5211838
    Abstract: A two stage process for catalytically reforming a gasoline boiling range hydrocarbonaceous feedstock. The reforming is conducted in two stages wherein the first stage is operated in a fixed bed mode, and the second stage is operated in a moving bed continual catalyst regeneration mode. A gaseous stream comprised of hydrogen and predominantly C.sub.4.sup.- and a C.sub.5.sup.+ liquid stream are produced between stages. A portion of the hydrogen-rich stream is recycled and the and the remaining portion and an aromatics-lean stream, which is obtained during aromatics separation between stages, is sent to second stage reforming.
    Type: Grant
    Filed: December 9, 1991
    Date of Patent: May 18, 1993
    Assignee: Exxon Research & Engineering Company
    Inventors: Staubs, David W., Stuart S. Goldstein, Paul W. Kamienski, Gerrit S. Swart, George A. Swan, III, Kenneth R. Clem
  • Patent number: 5196110
    Abstract: A two stage catalytic reforming process. The first stage is comprised of two separate fixed-bed reforming units each comprised of one or more serially connected fixed-bed reforming zones. The second stage is comprised of one or more moving-bed reforming zones with continual catalyst regeneration. A hydrogen-rich gaseous stream is separated after each fixed-bed unit and a portion is recycled to the respective fixed-bed reforming zones.
    Type: Grant
    Filed: December 9, 1991
    Date of Patent: March 23, 1993
    Assignee: Exxon Research and Engineering Company
    Inventors: Gerrit S. Swart, Paul W. Kamienski, Stuart S. Goldstein, David W. Staubs, George A. Swan, III
  • Patent number: 5190639
    Abstract: A reforming system for reforming gasoline boiling range hydrocarbon streams, which system is comprised of two or more parallel fixed-bed reforming stages sharing a common moving-bed reforming stage.
    Type: Grant
    Filed: December 9, 1991
    Date of Patent: March 2, 1993
    Assignee: Exxon Research and Engineering Company
    Inventors: Gerrit S. Swart, Paul W. Kamienski, Stuart S. Goldstein
  • Patent number: 4348486
    Abstract: Methanol is produced by gasifying a carbonaceous feed material with steam in the presence of a carbon-alkali metal catalyst and added hydrogen and carbon monoxide at a temperature between about 1000.degree. F. and about 1500.degree. F.
    Type: Grant
    Filed: August 27, 1981
    Date of Patent: September 7, 1982
    Assignee: Exxon Research and Engineering Co.
    Inventors: William J. Calvin, Stuart S. Goldstein, Harry A. Marshall
  • Patent number: 4348487
    Abstract: Methanol is produced by gasifying a carbonaceous feed material with steam in the presence of a carbon-alkali metal catalyst and added hydrogen and carbon monoxide at a temperature between about 1000.degree. F. and about 1500.degree. F.
    Type: Grant
    Filed: November 2, 1981
    Date of Patent: September 7, 1982
    Assignee: Exxon Research and Engineering Co.
    Inventors: Stuart S. Goldstein, William J. Calvin, Harry A. Marshall
  • Patent number: H2244
    Abstract: A reforming process in which a hydrocarbon feed containing aliphatic hydrocarbons is converted to a hydrocarbon product comprising an increased proportion of aromatics by passage over a reforming catalyst in a sequence of moving bed reactors operating under reforming conditions including moderate hydrogen pressure. The process is applicable when a former fixed moving bed reformer has been converted to moving bed reactor operation with the recycle and other ancillary equipment retained so that moderate pressure (hydrogen partial pressure at least 11 barg) is required, usually with a catalysts such as Pt/Re which tend to exhibit excessive hydrogenolysis activity in moving bed service. The recycle hydrogen stream is split with a portion going to at least one reactor subsequent to the first reactor.
    Type: Grant
    Filed: March 22, 2005
    Date of Patent: August 3, 2010
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Russell T. Clay, Stuart S. Goldstein