Patents by Inventor Kevin L. Ricketson
Kevin L. Ricketson 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).
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Patent number: 7922977Abstract: A method and apparatus for converting a hydrocarbon and oxygen containing gas feed stream to a product stream, such as syngas, including catalytically partially oxidizing the hydrocarbon feed stream over a catalyst bed. The catalyst bed has a downstream zone which is less resistant to flow than the upstream zone.Type: GrantFiled: April 12, 2005Date of Patent: April 12, 2011Assignee: ConocoPhillips CompanyInventors: Bang Cheng Xu, Sriram Ramani, Kevin L. Ricketson, Gloria I. Straguzzi, Larry D. Swinney, Joe D. Allison
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Patent number: 6946114Abstract: Lanthanide-promoted rhodium-containing supported catalysts that are active for catalyzing the net partial oxidation of methane to CO and H2 are disclosed, along with their manner of making and high efficiency processes for producing synthesis gas employing the new catalysts. A preferred catalyst comprises highly dispersed, high surface area rhodium on a granular zirconia support with an intermediate coating of a lanthanide metal and/or oxide thereof and is thermally conditioned during catalyst preparation. In a preferred syngas production process a stream of methane-containing gas and O2 is passed over a thermally conditioned, high surface area Rh/Sm/zirconia granular catalyst in a short contact time reactor to produce a mixture of carbon monoxide and hydrogen.Type: GrantFiled: September 5, 2001Date of Patent: September 20, 2005Assignee: ConocoPhillips CompanyInventors: Joe D. Allison, Larry D. Swinney, Tianyan Niu, Kevin L. Ricketson, Daxiang Wang, Sriram Ramani, Gloria I. Straguzzi, David M. Minahan, Harold A. Wright, Baili Hu
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Patent number: 6923922Abstract: A method for the recovery of rhodium from spent supported catalysts. In one embodiment, a method for recovering rhodium from a host material includes roasting the host material in air at a temperature sufficient to convert at least a portion of rhodium to Rh2O3, leaching the host material in a solution with a leaching constituent which is reactive with Rh2O3 to form a first intermediate species, reacting the first intermediate species in a solution with an acidifying constituent or complexing agent to form a second intermediate species, and purifying the second intermediate species. Preferably, the roasting temperature is approximately from 600° C. to 800° C. for 0.5 to 10 hours. In some embodiments, the host material is ground to particles in the range of 0.1 to 10 mm.Type: GrantFiled: April 21, 2004Date of Patent: August 2, 2005Assignee: ConocoPhillips CompanyInventors: Zhen Chen, Kevin L. Ricketson, Baili Hu, Harold A. Wright, Joe D. Allison
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Patent number: 6903139Abstract: Embodiments include a method and apparatus for producing synthesis gas in a catalytic partial oxidation reactor by adding hydrogen to the reactor feed stream.Type: GrantFiled: November 21, 2002Date of Patent: June 7, 2005Assignee: ConocoPhillips CompanyInventors: Stephen R. Landis, Lisa M. Carmichael, Kevin L. Ricketson, Thomas R. Ruddy, II
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Patent number: 6887456Abstract: A method and apparatus for converting a hydrocarbon and oxygen containing gas feed stream to a product stream, such as syngas, including catalytically partially oxidizing the hydrocarbon feed stream over a catalyst bed. The catalyst bed has a downstream section which is less resistant to flow than the upstream section.Type: GrantFiled: October 4, 2002Date of Patent: May 3, 2005Assignee: ConocoPhillips CompanyInventors: Bang Chen Xu, Sriram Ramani, Kevin L. Ricketson, Gloria I. Straguzzi, Larry D. Swinney, Joe D. Allison
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Publication number: 20040202607Abstract: A method for the recovery of rhodium from spent supported catalysts. In one embodiment, a method for recovering rhodium from a host material includes roasting the host material in air at a temperature sufficient to convert at least a portion of rhodium to Rh2O3, leaching the host material in a solution with a leaching constituent which is reactive with Rh2O3 to form a first intermediate species, reacting the first intermediate species in a solution with an acidifying constituent or complexing agent to form a second intermediate species, and purifying the second intermediate species. Preferably, the roasting temperature is approximately from 600° C. to 800° C. for 0.5 to 10 hours. In some embodiments, the host material is ground to particles in the range of 0.1 to 10 mm.Type: ApplicationFiled: April 21, 2004Publication date: October 14, 2004Applicant: ConocoPhillips CompanyInventors: Zhen Chen, Kevin L. Ricketson, Baili Hu, Harold A. Wright, Joe D. Allison
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Publication number: 20040171900Abstract: The present invention includes methods and apparatus for start-up a chemical reactor wherein at least a portion of the igniter is downstream from the reaction zone which needs to be ignited. Particularly, embodiments of the present invention include a partial oxidation reactor with an igniter downstream of the partial oxidation zone.Type: ApplicationFiled: February 28, 2003Publication date: September 2, 2004Applicant: ConocoPhillips CompanyInventors: Daxiang Wang, Chad Ricketson, Gloria I. Straguzzi, Harold A. Wright, Larry D. Swinney, Joe D. Allison, Zhen Chen, Kevin L. Ricketson, Shang Y. Chen, Steven R. McDonald
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Patent number: 6764662Abstract: A method for the recovery of rhodium from spent supported catalysts. In one embodiment, a method for recovering rhodium from a host material includes roasting the host material in air at a temperature sufficient to convert at least a portion of rhodium to Rh2O3, leaching the host material in a solution with a leaching constituent which is reactive with Rh2O3 to form a first intermediate species, reacting the first intermediate species in a solution with an acidifying constituent or complexing agent to form a second intermediate species, and purifying the second intermediate species. Preferably, the roasting temperature is approximately from 600° C. to 800° C. for 0.5 to 10 hours. In some embodiments, the host material is ground to particles in the range of 0.1 to 10 mm.Type: GrantFiled: June 20, 2002Date of Patent: July 20, 2004Assignee: ConocoPhillips CompanyInventors: Zhen Chen, Kevin L. Ricketson, Baili Hu, Harold A. Wright, Joe D. Allison
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Publication number: 20040102531Abstract: Embodiments include a method and apparatus for producing synthesis gas in a catalytic partial oxidation reactor by adding hydrogen to the reactor feed stream.Type: ApplicationFiled: November 21, 2002Publication date: May 27, 2004Applicant: Conoco Inc.Inventors: Stephen R. Landis, Lisa M. Carmichael, Kevin L. Ricketson, Thomas R. Ruddy
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Publication number: 20030236440Abstract: A method for the recovery of rhodium from spent supported catalysts. In one embodiment, a method for recovering rhodium from a host material includes roasting the host material in air at a temperature sufficient to convert at least a portion of rhodium to Rh2O3, leaching the host material in a solution with a leaching constituent which is reactive with Rh2O3 to form a first intermediate species, reacting the first intermediate species in a solution with an acidifying constituent or complexing agent to form a second intermediate species, and purifying the second intermediate species. Preferably, the roasting temperature is approximately from 600° C. to 800° C. for 0.5 to 10 hours. In some embodiments, the host material is ground to particles in the range of 0.1 to 10 mm.Type: ApplicationFiled: June 20, 2002Publication date: December 25, 2003Applicant: Conoco Inc.Inventors: Zhen Chen, Kevin L. Ricketson, Baili Hu, Harold A. Wright, Joe D. Allison
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Publication number: 20030083198Abstract: A method and apparatus for converting a hydrocarbon and oxygen containing gas feed stream to a product stream, such as syngas, including catalytically partially oxidizing the hydrocarbon feed stream over a catalyst bed. The catalyst bed has a downstream section which is less resistant to flow than the upstream section.Type: ApplicationFiled: October 4, 2002Publication date: May 1, 2003Applicant: Conoco Inc.Inventors: Bang Chen Xu, Sriram Ramani, Kevin L. Ricketson, Gloria I. Straguzzi, Larry D. Swinney, Joe D. Allison
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Publication number: 20020115730Abstract: Lanthanide-promoted rhodium-containing supported catalysts that are active for catalyzing the net partial oxidation of methane to CO and H2 are disclosed, along with their manner of making and high efficiency processes for producing synthesis gas employing the new catalysts. A preferred catalyst comprises highly dispersed, high surface area rhodium on a granular zirconia support with an intermediate coating of a lanthanide metal and/or oxide thereof and is thermally conditioned during catalyst preparation. In a preferred syngas production process a stream of methane-containing gas and O2 is passed over a thermally conditioned, high surface area Rh/Sm/zirconia granular catalyst in a short contact time reactor to produce a mixture of carbon monoxide and hydrogen.Type: ApplicationFiled: September 5, 2001Publication date: August 22, 2002Inventors: Joe D. Allison, Larry D. Swinney, Tianyan Niu, Kevin L. Ricketson, Daxiang Wang, Sriram Ramani, Gloria I. Straguzzi, David M. Minahan, Harold A. Wright, Baili Hu