Patents by Inventor Satish S. Tamhankar
Satish S. Tamhankar 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: 20180148330Abstract: A method for producing hydrogen in a steam methane reformer is disclosed. The method provides for the steps of feeding a mixture of fuel and air to a steam methane reformer; feeding a mixture of steam and hydrocarbons to the steam methane reformer; contacting the steam and hydrocarbons with a metal monolith supported catalyst; providing an electric current to the metal monolith supported catalyst; and recovering the hydrogen. The electric current applied to the metal monolith supported catalyst will encounter electrical resistance which will create heat. This heat can supplement that provided for by the reaction of the fuel and air allowing for a reduction in fueling costs as well as treatment costs of the resultant flue gas.Type: ApplicationFiled: November 30, 2016Publication date: May 31, 2018Inventors: Satish S. Tamhankar, Raju Natarajan, Ramachandran Krishnamurthy, Rachid Mabrouk
-
Publication number: 20170260879Abstract: A method for producing an energy source from excess electricity is disclosed. The method uses excess electricity from a power grid when electrical demand is low. The method produces the energy source by performing the steps firstly in the storage phase of feeding the excess electricity to a thermal reactor wherein solid carbon and gaseous hydrogen are produced from the thermal reaction of a hydrocarbon; feeding the gaseous hydrogen to a hydrogen storage unit; feeding the solid carbon to a carbon storage unit; and secondly in the discharge phase, feeding the solid carbon to a combustion unit wherein steam is produced; and feeding the steam to an engine or a turbine thereby producing electricity.Type: ApplicationFiled: March 14, 2016Publication date: September 14, 2017Inventors: Satish S. Tamhankar, Neeraj Saxena
-
Publication number: 20140332405Abstract: A method for producing hydrogen by performing the steps of feeding a synthesis gas mixture to a pressure swing adsorption unit; producing hydrogen from the synthesis gas mixture in the pressure swing adsorption unit; feeding the remainder of the synthesis gas mixture at low pressure to an electrochemical cell wherein hydrogen is separated from the remainder of the synthesis gas mixture and is simultaneously pressurized; feeding the pressurized hydrogen from the electrochemical cell to join with the hydrogen generated in the pressure swing adsorption unit and recovering the combined hydrogen product. The synthesis gas mixture may be from a reformation unit and it may be subject to a water gas shift reaction. In addition to the production of hydrogen, the separation of hydrogen in the electrochemical cell increases the concentration of carbon dioxide in the residual waste gas and enables carbon dioxide recovery.Type: ApplicationFiled: May 8, 2013Publication date: November 13, 2014Inventors: Satish S. Tamhankar, Ramachandran Krishnamurthy
-
Publication number: 20140311917Abstract: A method is disclosed for producing high purity, high pressure hydrogen from a low pressure synthesis gas production process. The low pressure synthesis gas is produced from steam or carbon dioxide reforming of hydrocarbons, autothermal reforming of hydrocarbons or partial oxidation of hydrocarbons. The resulting low pressure synthesis gas mixture is fed to an electro-chemical cell wherein hydrogen is separated from the low pressure synthesis gas mixture and subjected to compression and high pressure; high purity hydrogen is recovered from the electro-chemical cell.Type: ApplicationFiled: April 19, 2013Publication date: October 23, 2014Inventor: Satish S. Tamhankar
-
Patent number: 8128736Abstract: A method for producing carbon dioxide by the steps of feeding a CO2-rich feed stream containing fuel gas to an oxygenated oxygen-selective ceramic bed to produce a product stream of carbon dioxide, water, and residual oxygen; adding oxygen to this product stream and feeding to an oxygen-depleted oxygen-selective ceramic bed and recovering carbon dioxide substantially free of oxygen and fuel gas. In an additional embodiment, nitrogen oxides are also removed from the fuel gas.Type: GrantFiled: August 11, 2009Date of Patent: March 6, 2012Assignee: Linde AktiengesellschaftInventors: Donald Prentice Satchell, Jr., Frank R. Fitch, Satish S. Tamhankar
-
Patent number: 7976620Abstract: A hydrogen storage system for storing hydrogen gas at elevated pressures and cryogenic temperatures is disclosed. The hydrogen gas is fed to a storage container which contains a physisorption type material and a volatile liquid container for liquid nitrogen. Cryogenic conditions are maintained within the storage container during the periods of storage and the periods where the hydrogen gas is removed from the storage system.Type: GrantFiled: May 2, 2007Date of Patent: July 12, 2011Assignee: Linde North America, Inc.Inventors: Ron Lee, Frank R. Fitch, Satish S. Tamhankar
-
Publication number: 20110038783Abstract: A method for producing carbon dioxide by the steps of feeding a CO2-rich feed stream containing fuel gas to an oxygenated oxygen-selective ceramic bed to produce a product stream of carbon dioxide, water, and residual oxygen; adding oxygen to this product stream and feeding to an oxygen-depleted oxygen-selective ceramic bed and recovering carbon dioxide substantially free of oxygen and fuel gas. In an additional embodiment, nitrogen oxides are also removed from the fuel gas.Type: ApplicationFiled: August 11, 2009Publication date: February 17, 2011Inventors: Donald Prentice SATCHELL, JR., Frank R. FITCH, Satish S. TAMHANKAR
-
Patent number: 7624770Abstract: Multi compressor systems and apparatuses for the manufacture, storage and dispensing of manufactured hydrogen fuel to hydrogen vehicle tanks or remote mobile refuelers are disclosed.Type: GrantFiled: September 23, 2005Date of Patent: December 1, 2009Assignee: The BOC Group, Inc.Inventors: Robert Walter Boyd, David Grant Wardle, Kelly R. Leitch, Satish S. Tamhankar, Gary Peter Lomas
-
Publication number: 20090185972Abstract: A hydrogen storage system for storing hydrogen gas at elevated pressures and cryogenic temperatures is disclosed. The hydrogen gas is fed to a storage container which contains a physisorption type material and a volatile liquid container for liquid nitrogen. Cryogenic conditions are maintained within the storage container during the periods of storage and the periods where the hydrogen gas is removed from the storage system.Type: ApplicationFiled: May 2, 2007Publication date: July 23, 2009Inventors: Ron Lee, Frank R. Fitch, Satish S. Tamhankar
-
Patent number: 7544342Abstract: The present invention provides a process for producing hydrogen by passing a hydrocarbon-containing gas over a ceramic monolith at a temperature sufficient to produce hydrogen; and passing an oxygen-containing gas over the ceramic monolith at a temperature sufficient to react with the carbon on the ceramic monolith and to produce carbon monoxide. The process is performed cyclically using one or more beds in a manner such that hydrogen is produced followed by carbon monoxide production.Type: GrantFiled: June 6, 2005Date of Patent: June 9, 2009Assignee: The BOC Group, Inc.Inventors: Satish S. Tamhankar, Sekharipuram V. Krishnan, Michael H. Leison
-
Patent number: 7303606Abstract: Production of oxygen-enriched gas streams is disclosed herein. Air streams contact an oxygen-selective mixed conductor particularly a perovskite material whereby oxygen is retained or adsorbed on the perovskite and can be employed in a variety of processes such as in combusting a fuel gas, heat recovery and boiler related operations.Type: GrantFiled: March 29, 2005Date of Patent: December 4, 2007Assignee: The BOC Group, Inc.Inventors: Yongxian Zeng, Divyanshu R. Acharya, Satish S. Tamhankar, Narayanan Ramprasad, Ramakrishnan Ramachandran, Frank R. Fitch, Donald L. MacLean, Jerry Y. S. Lin, Richard H. Clarke
-
Patent number: 7214331Abstract: An improved process for the catalytic partial oxidation of hydrocarbons to produce hydrogen and carbon monoxide is disclosed. The process also utilizes a novel catalyst configuration containing at least two serially aligned layers containing a noble metal or transition metal catalyst supported on a support. Alternatively the process employs only the first layer of a catalytically active metal dispersed on an inert carrier support to partially oxidize hydrocarbons.Type: GrantFiled: February 26, 2004Date of Patent: May 8, 2007Assignee: The BOC Group, Inc.Inventors: Weibin Jiang, Adeola F. Ojo, Sudhakar R. Jale, Satish S. Tamhankar, Bruce Walter Uhlman
-
Patent number: 7090826Abstract: An improved process for the catalytic partial oxidation of hydrocarbons to produce hydrogen and carbon monoxide and less than ˜2% carbon dioxide is disclosed. The process further permits the reaction to be initiated at room temperature, and utilizes a metal catalyst deposited on a ceria-coated zirconia monolith support, which exhibits high conversions of hydrocarbons to synthesis gas (hydrogen and carbon monoxide).Type: GrantFiled: September 8, 2003Date of Patent: August 15, 2006Assignee: The BOC Group, Inc.Inventors: Weibin Jiang, Seungdoo Park, Mark S. Tomczak, Divyanshu R. Acharya, Satish S. Tamhankar, Ramakrishnan Ramachandran
-
Patent number: 7070752Abstract: Supported perovskite-type oxides are described. The perovskite-type oxides have the general formula of AxA?x?ByB?y?O3??, wherein A is an ion of a metal of Group IIIa or IIIb of the periodic table of elements or mixtures thereof; A? is an ion of a metal of Groups Ia or IIa of the periodic table or mixtures thereof; B and B? are ions of a d-block transition metal of the periodic table or mixtures thereof; x, x?, y and y? vary from 0 to 1; 0.95<x+x?<1.05; 0.95<y+y?<1.05; ? is the deviation from ideal oxygen stoichiometry. This invention also provides for the selection of support materials and the shapes of supported perovskite-type oxides as well as the methods for making them.Type: GrantFiled: January 19, 2005Date of Patent: July 4, 2006Assignee: The BOC Group, Inc.Inventors: Yongxian Zeng, Rudolph J. Wolf, Frank R. Fitch, Martin Bülow, Satish S. Tamhankar, Divyanshu R. Acharya
-
Patent number: 6783749Abstract: Improved method for recovering hydrogen and carbon monoxide from hydrocarbon conversion processes are disclosed. A monolith catalyst reactor means is utilized in treating the waste gas stream from the hydrocarbon conversion process to assist in recovering hydrogen and carbon monoxide from the waste gas stream. The present invention also provides a method for improving the yield of hydrogen and carbon monoxide from a hydrocarbon conversion process utilizing a monolith catalyst reactor means.Type: GrantFiled: May 13, 2002Date of Patent: August 31, 2004Assignee: The BOC Group, Inc.Inventors: Natarajan Narasimhan, Ramakrishnan Ramachandran, Satish S. Tamhankar, Weibin Jiang
-
Patent number: 6761838Abstract: Partial oxidation of hydrocarbons to produce hydrogen and carbon monoxide is carried out by a cyclical process, which includes (a) contacting an oxygen ion conducting ceramic with air at a pressure between about 1 and 50 bara in a reactor, wherein oxygen from the air reacts with the ceramic, thereby producing an oxygen-enriched ceramic, and (b) contacting the hot, oxygen-enriched ceramic with hydrocarbon gas and optionally steam in the reactor. During the partial oxidation reaction phase of the process, the oxygen-enriched ceramic reacts with the hydrocarbon, thereby producing the desired gas products and regenerating the oxygen ion conducting ceramic for the next cycle of the process.Type: GrantFiled: July 20, 2001Date of Patent: July 13, 2004Assignee: The BOC Group, Inc.Inventors: Yongxian Zeng, Satish S. Tamhankar, Narayanan Ramprasad, Ravi Jain, Donald L. MacLean
-
Publication number: 20040120888Abstract: An improved process for the catalytic partial oxidation of hydrocarbons to produce hydrogen and carbon monoxide and less than ˜2% carbon dioxide is disclosed. The process further permits the reaction to be initiated at room temperature, and utilizes a metal catalyst deposited on a ceria-coated zirconia monolith support, which exhibits high conversions of hydrocarbons to synthesis gas (hydrogen and carbon monoxide).Type: ApplicationFiled: September 8, 2003Publication date: June 24, 2004Inventors: Weibin Jiang, Seungdoo Park, Mark S. Tomczak, Divyanshu R. Acharya, Satish S. Tamhankar, Ramakrishnan Ramachandran
-
Publication number: 20030208960Abstract: Improved method for recovering hydrogen and carbon monoxide from hydrocarbon conversion processes are disclosed. A monolith catalyst reactor means is utilized in treating the waste gas stream from the hydrocarbon conversion process to assist in recovering hydrogen and carbon monoxide from the waste gas stream. The present invention also provides a method for improving the yield of hydrogen and carbon monoxide from a hydrocarbon conversion process utilizing a monolith catalyst reactor means.Type: ApplicationFiled: May 13, 2002Publication date: November 13, 2003Inventors: Natarajan Narasimhan, Ramakrishnan Ramachandran, Satish S. Tamhankar, Weibin Jiang
-
Publication number: 20030166463Abstract: A process and a metal catalyst are provided for the partial oxidation of hydrocarbons to produce hydrogen and carbon monoxide. The process is conducted by contacting a mixture of a hydrocarbon-containing gas and an oxygen-containing gas in the presence of a metal catalyst. The metal catalyst is a transition or noble metal supported on a ceria monolith substrate. Partial oxidation of hydrocarbons can be carried out at low initiation temperatures with high product yields.Type: ApplicationFiled: March 7, 2003Publication date: September 4, 2003Inventors: Satish S. Tamhankar, Narayanan Ramprasad, YuDong Chen, Mark S. Tomczak
-
Publication number: 20030138747Abstract: Production of oxygen-enriched gas streams is disclosed herein. Air streams contact an oxygen-selective mixed conductor particularly a perovskite material whereby oxygen is retained or adsorbed on the perovskite and can be employed in a variety of processes such as in combusting a fuel gas, heat recovery and boiler related operations.Type: ApplicationFiled: December 6, 2002Publication date: July 24, 2003Inventors: Yongxian Zeng, Divyanshu R. Acharya, Satish S. Tamhankar, Narayanan Ramprasad, Ramakrishnan Ramachandran, Frank R. Fitch, Donald L. MacLean, Jerry Y.S. Lin, Richard H. Clarke