Patents by Inventor David P. Mann
David P. Mann 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: 9169062Abstract: Methods, systems, and apparatus for mass flow are provided. The apparatus can include a housing, an inlet disposed at a first end of the housing, and an outlet disposed at a second end of the housing. The housing can include a first section and a second section. The second section can have at least one tapered sidewall that slopes away from an inner surface of the first section toward the outlet. The apparatus can also include a divider disposed at least partially within the first and second sections of the housing. The divider can have at least one tapered surface disposed proximate the at least one tapered sidewall of the second section. An edge of the divider can be located between the outlet and a point within the second section where the cross-sectional area of the second section is about three times or less a cross-sectional area of the outlet.Type: GrantFiled: June 30, 2011Date of Patent: October 27, 2015Assignee: KELLOGG BROWN & ROOT LLCInventors: Edwin V. Reece, John Abughazaleh, Michael J. Sandefur, David P. Mann
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Patent number: 8608982Abstract: Systems and methods for producing a synthetic gas are provided. A feedstock can be gasified within a gasifier to produce a raw syngas. The raw syngas can be processed within a processing device to produce a processed syngas. The processed syngas can be separated into a vapor phase, an organic phase, and an aqueous phase within a separator. The organic phase can be introduced to the gasifier. The aqueous phase can be introduced to a stripper to provide steam and a condensate, and the steam can then be introduced to the gasifier.Type: GrantFiled: July 25, 2012Date of Patent: December 17, 2013Assignee: Kellogg Brown & Root LLCInventors: John Abughazaleh, Siva Ariyapadi, David P. Mann
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Publication number: 20130004247Abstract: Methods, systems, and apparatus for mass flow are provided. The apparatus can include a housing, an inlet disposed at a first end of the housing, and an outlet disposed at a second end of the housing. The housing can include a first section and a second section. The second section can have at least one tapered sidewall that slopes away from an inner surface of the first section toward the outlet. The apparatus can also include a divider disposed at least partially within the first and second sections of the housing. The divider can have at least one tapered surface disposed proximate the at least one tapered sidewall of the second section. An edge of the divider can be located between the outlet and a point within the second section where the cross-sectional area of the second section is about three times or less a cross-sectional area of the outlet.Type: ApplicationFiled: June 30, 2011Publication date: January 3, 2013Applicants: Edwin V. Reece, David P. Mann, Michael J. Sandefur, John AbughazalehInventors: Edwin V. Reece, John Abughazaleh, Michael J. Sandefur, David P. Mann
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Patent number: 8293195Abstract: Systems and methods for contacting a liquid, gas, and/or a multi-phase mixture with particulate solids. The system can include a body having a first head and a second head disposed thereon. Two or more discrete fixed beds can be disposed across a cross-section of the body. One or more unobstructed fluid flow paths can bypass each fixed bed, and one or more baffles can be disposed between the fixed beds.Type: GrantFiled: May 30, 2012Date of Patent: October 23, 2012Assignee: Kellogg Brown & Root LLCInventors: Kenneth L. Blanchard, David P. Mann
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Patent number: 8273139Abstract: Systems and processes for producing syngas are provided. A first hydrocarbon can be partially oxidized in the presence of an oxidant and one or more first catalysts at conditions sufficient to partially combust a portion of the first hydrocarbon to provide carbon dioxide, non-combusted first hydrocarbon, and heat. At least a portion of the non-combusted first hydrocarbon can be reformed in the presence of at least a portion of the heat generated in the partial oxidation step and the one or more first catalysts to provide a first syngas. The first syngas can comprise hydrogen, carbon monoxide, and carbon dioxide. Heat can be indirectly exchanged from the first syngas to a second hydrocarbon to reform at least a portion of the second hydrocarbon in the presence of steam and one or more second catalysts to provide a second syngas. The second syngas can comprise hydrogen, carbon monoxide, and carbon dioxide.Type: GrantFiled: July 18, 2008Date of Patent: September 25, 2012Assignee: Kellogg Brown & Root LLCInventors: Avinash Malhotra, David P. Mann
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Publication number: 20120237434Abstract: Systems and methods for contacting a liquid, gas, and/or a multi-phase mixture with particulate solids. The system can include a body having a first head and a second head disposed thereon. Two or more discrete fixed beds can be disposed across a cross-section of the body. One or more unobstructed fluid flow paths can bypass each fixed bed, and one or more baffles can be disposed between the fixed beds.Type: ApplicationFiled: May 30, 2012Publication date: September 20, 2012Applicant: Kellogg Brown & Root LLCInventors: Kenneth L. Blanchard, David P. Mann
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Patent number: 8197785Abstract: Systems and methods for contacting a liquid, gas, and/or a multi-phase mixture with particulate solids. The system can include a body having a first head and a second head disposed thereon. Two or more discrete fixed beds can be disposed across a cross-section of the body. One or more unobstructed fluid flow paths can bypass each fixed bed, and one or more baffles can be disposed between the fixed beds.Type: GrantFiled: February 27, 2008Date of Patent: June 12, 2012Assignee: Kellogg Brown & Root LLCInventors: Kenneth L. Blanchard, David P. Mann
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Patent number: 7932296Abstract: Systems and methods for producing syngas are provided. A first hydrocarbon can be partially oxidized in the presence of an oxidant and one or more first catalysts at conditions sufficient to partially combust a portion of the first hydrocarbon to provide carbon dioxide, non-combusted first hydrocarbon, and heat. The non-combusted first hydrocarbon can be reformed in the presence of the heat generated in the partial oxidation step and the one or more first catalysts to provide a first syngas. Heat can be indirectly exchanged from the first syngas to a second hydrocarbon to reform at least a portion of the second hydrocarbon in the presence of steam and one or more second catalysts to provide a second syngas. A syngas, which can include the at least a portion of the first syngas, at least a portion of the second syngas, or a mixture thereof can be converted to provide one or more Fischer-Tropsch products, methanol, derivatives thereof, or combinations thereof.Type: GrantFiled: July 18, 2008Date of Patent: April 26, 2011Assignee: Kellogg Brown & Root LLCInventors: Avinash Malhotra, David P. Mann
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Patent number: 7846417Abstract: An ammonia converter and method are disclosed. The reactor can alter the conversion of ammonia by controlling the reaction temperature of the exothermic reaction along the length of the reactor to parallel the equilibrium curve for the desired product. The reactor 100 can comprise a shell 101 and internal catalyst tubes 109. The feed gas stream enters the reactor, flows through the shell 101, and is heated by indirect heat exchange with the catalyst tubes 109. The catalyst tubes 109 comprise reactive zones 122 having catalyst and reaction limited zones 124 that can comprise inert devices that function to both separate the reactive zones, increase heat transfer area, and reduce the temperature of the reaction mixture as the effluent passes through the catalyst tube 109.Type: GrantFiled: October 31, 2007Date of Patent: December 7, 2010Assignee: Kellogg Brown & Root LLCInventors: Shashi P. Singh, David P. Mann, Anant Pisut
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Patent number: 7842254Abstract: An ammonia converter is disclosed. The converter can alter the conversion of ammonia by controlling the reaction temperature of the exothermic reaction along the length of the reactor to parallel the equilibrium curve for the desired product. The converter can comprise a shell 101 and internal catalyst tubes 109. The feed gas stream enters the reactor, flows through the shell 101, and is heated by indirect heat exchange with the catalyst tubes 109. The catalyst tubes 109 comprise reactive zones 122 having catalyst and reaction limited zones 124 that can comprise inert devices that function to both separate the reactive zones, increase heat transfer area, and reduce the temperature of the reaction mixture as the effluent passes through the catalyst tube 109.Type: GrantFiled: October 31, 2007Date of Patent: November 30, 2010Assignee: Kellogg Brown & Root LLCInventors: Shashi P. Singh, David P. Mann, Anant Pisut
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Publication number: 20090214410Abstract: Systems and methods for contacting a liquid, gas, and/or a multi-phase mixture with particulate solids. The system can include a body having a first head and a second head disposed thereon. Two or more discrete fixed beds can be disposed across a cross-section of the body. One or more unobstructed fluid flow paths can bypass each fixed bed, and one or more baffles can be disposed between the fixed beds.Type: ApplicationFiled: February 27, 2008Publication date: August 27, 2009Inventors: Kenneth L. Blanchard, David P. Mann
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Publication number: 20090064582Abstract: Systems and processes for producing syngas are provided. A first hydrocarbon can be partially oxidized in the presence of an oxidant and one or more first catalysts at conditions sufficient to partially combust a portion of the first hydrocarbon to provide carbon dioxide, non-combusted first hydrocarbon, and heat. At least a portion of the non-combusted first hydrocarbon can be reformed in the presence of at least a portion of the heat generated in the partial oxidation step and the one or more first catalysts to provide a first syngas. The first syngas can comprise hydrogen, carbon monoxide, and carbon dioxide. Heat can be indirectly exchanged from the first syngas to a second hydrocarbon to reform at least a portion of the second hydrocarbon in the presence of steam and one or more second catalysts to provide a second syngas. The second syngas can comprise hydrogen, carbon monoxide, and carbon dioxide.Type: ApplicationFiled: July 18, 2008Publication date: March 12, 2009Applicant: KELLOGG BROWN & ROOT LLCInventors: Avinash Malhotra, David P. Mann
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Publication number: 20080275143Abstract: Systems and methods for producing syngas are provided. A first hydrocarbon can be partially oxidized in the presence of an oxidant and one or more first catalysts at conditions sufficient to partially combust a portion of the first hydrocarbon to provide carbon dioxide, non-combusted first hydrocarbon, and heat. The non-combusted first hydrocarbon can be reformed in the presence of the heat generated in the partial oxidation step and the one or more first catalysts to provide a first syngas. Heat can be indirectly exchanged from the first syngas to a second hydrocarbon to reform at least a portion of the second hydrocarbon in the presence of steam and one or more second catalysts to provide a second syngas. A syngas, which can include the at least a portion of the first syngas, at least a portion of the second syngas, or a mixture thereof can be converted to provide one or more Fischer-Tropsch products, methanol, derivatives thereof, or combinations thereof.Type: ApplicationFiled: July 18, 2008Publication date: November 6, 2008Applicant: KELLOGG BROWN & ROOT LLCInventors: Avinash Malhotra, David P. Mann
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Patent number: 7371361Abstract: An ammonia converter system and method are disclosed. The reactor can alter the conversion of ammonia by controlling the reaction temperature of the exothermic reaction along the length of the reactor to parallel the equilibrium curve for the desired product. The reactor 100 can comprise a shell 101 and internal catalyst tubes 109. The feed gas stream enters the reactor, flows through the shell 101, and is heated by indirect heat exchange with the catalyst tubes 109. The catalyst tubes 109 comprise reactive zones 122 having catalyst and reaction limited zones 124 that can comprise inert devices that function to both separate the reactive zones, increase heat transfer area, and reduce the temperature of the reaction mixture as the effluent passes through the catalyst tube 109.Type: GrantFiled: November 3, 2004Date of Patent: May 13, 2008Assignee: Kellogg Brown & Root LLCInventors: Shashi P. Singh, David P. Mann, Anant Pisut
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Patent number: 7138001Abstract: Low-energy hydrogen production is disclosed. A reforming exchanger is placed in parallel with a partial oxidation reactor in a new hydrogen plant with improved efficiency and reduced steam export, or in an existing hydrogen plant where the hydrogen capacity can be increased by as much as 20–30 percent with reduced export of steam from the hydrogen plant.Type: GrantFiled: March 15, 2004Date of Patent: November 21, 2006Assignee: Kellogg Brown & Root LLCInventors: Stanislaus A. Knez, Avinash Malhotra, David P. Mann, Martin J. Van Sickels
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Publication number: 20040177555Abstract: Low-energy hydrogen production is disclosed. A reforming exchanger is placed in parallel with a partial oxidation reactor in a new hydrogen plant with improved efficiency and reduced steam export, or in an existing hydrogen plant where the hydrogen capacity can be increased by as much as 20-30 percent with reduced export of steam from the hydrogen plant.Type: ApplicationFiled: March 15, 2004Publication date: September 16, 2004Applicant: KELLOGG BROWN AND ROOT, INC.Inventors: Stanislaus A. Knez, Avinash Malhotra, David P. Mann, Martin J. Van Sickels
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Patent number: 5264649Abstract: Disclosed is a process for removing acid soluble oils, produced as an undesirable by-product of an HF catalyzed alkylation reaction, from a liquid containing a sulfone compound. The process includes the use of a solvent to extract the acid soluble oils from a sulfone-containing fluid that has previously been neutralized by a treating step.Type: GrantFiled: December 15, 1992Date of Patent: November 23, 1993Assignee: Phillips Petroleum CompanyInventors: Alan D. Eastman, Ronald G. Abbott, Robert B. Eldridge, Fu-Ming Lee, David P. Mann, Robert J. Mitchell
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Patent number: 5237122Abstract: Disclosed is a process for removing acid soluble oils, produced as an undesirable by-product of an HF catalyzed alkylation reaction, from a liquid containing a sulfone compound. The process includes the use of water to induce the formation of the two immiscible liquid phases of ASO and sulfone with water. The two immiscible phases can subsequently be separated from each other.Type: GrantFiled: August 24, 1992Date of Patent: August 17, 1993Assignee: Phillips Petroleum CompanyInventors: Alan D. Eastman, Robert B. Eldridge, Richard L. Anderson, David P. Mann
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Patent number: 4518484Abstract: The process described uses a C.sub.2 -C.sub.10 hydrocarbon solvent and an organophosphorous compound to extract metals from metal containing oils. Preferably, the extraction is performed above the critical conditions of the solvent.Type: GrantFiled: February 16, 1984Date of Patent: May 21, 1985Assignee: Phillips Petroleum CompanyInventors: David P. Mann, Simon G. Kukes, Daniel M. Coombs