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: 9175233Abstract: 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: GrantFiled: January 23, 2006Date of Patent: November 3, 2015Assignee: EXXONMOBIL RESEARCH AND ENGINEERING COMPANYInventors: Stuart S. Goldstein, John H. Thurtoll, Bal K. Kaul, Greg A. Marshall
-
Patent number: 8668824Abstract: 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: GrantFiled: November 15, 2010Date of Patent: March 11, 2014Assignee: ExxonMobil Research and Engineering CompanyInventors: Bal K. Kaul, Abhash Nigam, Jasmina Poturovic, Mohsen N. Harandi, Stuart S. Goldstein
-
Publication number: 20110147270Abstract: 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: ApplicationFiled: January 23, 2006Publication date: June 23, 2011Inventors: Stuart S. Goldstein, John H. Thurtoll, Bal K. Kaul, Greg A. Marshall
-
Publication number: 20110147267Abstract: 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: ApplicationFiled: November 15, 2010Publication date: June 23, 2011Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANYInventors: Bal K. Kaul, Abhash Nigam, Jasmina Poturovic, Mohsen N. Harandi, Stuart S. Goldstein
-
Publication number: 20040129605Abstract: 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: ApplicationFiled: October 22, 2003Publication date: July 8, 2004Inventors: Stuart S. Goldstein, John H. Thurtell, John W. Viets, Tomas R. Melli, Jason R. Vollbracht
-
Patent number: 5417843Abstract: 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: GrantFiled: May 18, 1994Date of Patent: May 23, 1995Assignee: Exxon Research & Engineering Co.Inventors: Gerrit S. Swart, Stuart S. Goldstein, Paul W. Kamienski, George A. Swan, III
-
Patent number: 5368720Abstract: 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: GrantFiled: April 13, 1992Date of Patent: November 29, 1994Assignee: Exxon Research & Engineering Co.Inventors: John F. Dolan, Stuart S. Goldstein, George A. Swan, III
-
Patent number: 5354451Abstract: 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: GrantFiled: December 9, 1991Date of Patent: October 11, 1994Assignee: Exxon Research and Engineering CompanyInventors: Stuart S. Goldstein, Paul W. Kamienski, David W. Staubs, Gerrit S. Swart, George A. Swan, III
-
Patent number: 5211838Abstract: 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: GrantFiled: December 9, 1991Date of Patent: May 18, 1993Assignee: Exxon Research & Engineering CompanyInventors: Staubs, David W., Stuart S. Goldstein, Paul W. Kamienski, Gerrit S. Swart, George A. Swan, III, Kenneth R. Clem
-
Patent number: 5196110Abstract: 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: GrantFiled: December 9, 1991Date of Patent: March 23, 1993Assignee: Exxon Research and Engineering CompanyInventors: Gerrit S. Swart, Paul W. Kamienski, Stuart S. Goldstein, David W. Staubs, George A. Swan, III
-
Patent number: 5190639Abstract: 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: GrantFiled: December 9, 1991Date of Patent: March 2, 1993Assignee: Exxon Research and Engineering CompanyInventors: Gerrit S. Swart, Paul W. Kamienski, Stuart S. Goldstein
-
Patent number: 4348486Abstract: 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: GrantFiled: August 27, 1981Date of Patent: September 7, 1982Assignee: Exxon Research and Engineering Co.Inventors: William J. Calvin, Stuart S. Goldstein, Harry A. Marshall
-
Patent number: 4348487Abstract: 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: GrantFiled: November 2, 1981Date of Patent: September 7, 1982Assignee: Exxon Research and Engineering Co.Inventors: Stuart S. Goldstein, William J. Calvin, Harry A. Marshall
-
Patent number: H2244Abstract: 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: GrantFiled: March 22, 2005Date of Patent: August 3, 2010Assignee: ExxonMobil Research and Engineering CompanyInventors: Russell T. Clay, Stuart S. Goldstein