Patents by Inventor Ptoshia A. Burnett
Ptoshia A. Burnett 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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Publication number: 20060081502Abstract: The present invention provides a process for reducing the nitrogen content of a liquid hydrocarbon feed wherein said process comprises a) contacting a liquid hydrocarbon feed comprising an alkylating agent and organic nitrogen species with an acidic catalyst at elevated temperature in a first reaction zone to generate a liquid hydrocarbon feed comprising a reduced alkylating agent content and organic nitrogen species of higher boiling point. b) fractionating the liquid hydrocarbon feed comprising a reduced alkylating agent content and organic nitrogen species of higher boiling point to remove the organic nitrogen species of higher boiling point to generate a liquid hydrocarbon feed comprising a reduced alkylating agent content and a reduced nitrogen content.Type: ApplicationFiled: April 16, 2003Publication date: April 20, 2006Inventors: Ptoshia Burnett, Michael Hodges, Thomas Knox
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Patent number: 6736963Abstract: Economical processes are disclosed for the production of fuels of reduced sulfur content from a feedstock, typically derived from natural petroleum, wherein the feedstock is comprised of limited amounts of sulfur-containing organic compounds as unwanted impurities. The processes involve an integrated, multiple stage system for converting these impurities to higher boiling products by alkylation and removing the higher boiling products by fractional distillation. Advantageously, the processes include selective hydrogenation of the high-boiling fraction whereby the incorporation of hydrogen into hydrocarbon compounds, sulfur-containing organic compounds, and/or nitrogen-containing organic compounds assists by hydrogenation removal of sulfur and/or nitrogen. Products can be used directly as transportation fuels and/or blending components to provide, for example, more suitable components for blending into fuels which are more friendly to the environment.Type: GrantFiled: July 31, 2001Date of Patent: May 18, 2004Assignee: BP Corporation North America Inc.Inventors: Vivek R. Pradhan, Ptoshia A. Burnett, Stacey McDaniel, Michael Hodges
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Patent number: 6733660Abstract: Economical processes are disclosed for the production of fuels of reduced sulfur content from a feedstock, typically derived from natural petroleum, wherein the feedstock is comprised of limited amounts of sulfur-containing organic compounds as unwanted impurities. The processes involve integrated, multistage processes which include pretreatment of a light naphtha with a solid adsorbent to remove basic nitrogen containing compounds, chemical conversion of one or more of the sulfur-containing impurities to higher boiling products by alkylation, and removing the higher boiling products by fractional distillation. Advantageously, the processes include selective hydrogenation of the high-boiling fraction whereby the incorporation of hydrogen into hydrocarbon compounds, sulfur-containing organic compounds, and/or nitrogen-containing organic compounds assists by hydrogenation removal of sulfur and/or nitrogen.Type: GrantFiled: July 31, 2001Date of Patent: May 11, 2004Assignee: BP Corporation North America Inc.Inventors: Vivek R. Pradhan, Ptoshia A. Burnett, Stacey McDaniel, Michael Hodges
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Patent number: 6602405Abstract: A product of reduced sulfur content is produced from an olefin-containing hydrocarbon feedstock which includes sulfur-containing impurities. The feedstock is contacted with an olefin-modification catalyst in a reaction zone under conditions which are effective to produce an intermediate product which has a reduced amount of olefinic unsaturation relative to that of the feedstock as measured by bromine number. The intermediate product is then contacted with a hydrodesulfurization catalyst in the presence of hydrogen under conditions which are effective to convert at least a portion of its sulfur-containing impurities to hydrogen sulfide.Type: GrantFiled: January 21, 2000Date of Patent: August 5, 2003Assignee: BP Corporation North America Inc.Inventors: Vivek R. Pradhan, Ptoshia A. Burnett, George A. Huff
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Patent number: 6599417Abstract: A product of reduced sulfur content is produced from an olefin-containing hydrocarbon feedstock which includes sulfur-containing impurities. The feedstock is contacted with an olefin-modification catalyst in a reaction zone under conditions which are effective to produce an intermediate product which has a reduced amount of olefinic unsaturation relative to that of the feedstock as measured by bromine number. The intermediate product is then separated into fractions of different volatility, and the lowest boiling fraction is contacted with a hydrodesulfurization catalyst in the presence of hydrogen under conditions which are effective to convert at least a portion of its sulfur-containing impurities to hydrogen sulfide.Type: GrantFiled: January 21, 2000Date of Patent: July 29, 2003Assignee: BP Corporation North America Inc.Inventors: Vivek R. Pradhan, Ptoshia A. Burnett, George A. Huff
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Publication number: 20030136706Abstract: A product of reduced sulfur content is produced from an olefin-containing hydrocarbon feedstock which includes sulfur-containing impurities. The feedstock is contacted with an olefin-modification catalyst in a reaction zone under conditions which are effective to produce an intermediate product which has a reduced amount of olefinic unsaturation relative to that of the feedstock as measured by bromine number. The intermediate product is then separated into at least three fractions of different volatility, and the lowest boiling first fraction is contacted with a hydrodesulfurization catalyst in the presence of hydrogen under conditions which are effective to convert at least a portion of its sulfur-containing impurities to hydrogen sulfide. The intermediate boiling fraction is contacted with a selective hydrotreating catalyst in the presence of hydrogen under conditions which are effective to convert at least a portion of its sulfur-containing impurities to hydrogen sulfide.Type: ApplicationFiled: October 23, 2002Publication date: July 24, 2003Inventors: Stacey McDaniel, Ptoshia A. Burnett
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Publication number: 20030034276Abstract: Economical processes are disclosed for the production of fuels of reduced sulfur content from a feedstock, typically derived from natural petroleum, wherein the feedstock is comprised of limited amounts of sulfur-containing organic compounds as unwanted impurities. The processes involve an integrated, multiple stage system for converting these impurities to higher boiling products by alkylation and removing the higher boiling products by fractional distillation. Advantageously, the processes include selective hydrogenation of the high-boiling fraction whereby the incorporation of hydrogen into hydrocarbon compounds, sulfur-containing organic compounds, and/or nitrogen-containing organic compounds assists by hydrogenation removal of sulfur and/or nitrogen. Products can be used directly as transportation fuels and/or blending components to provide, for example, more suitable components for blending into fuels which are more friendly to the environment.Type: ApplicationFiled: July 31, 2001Publication date: February 20, 2003Inventors: Vivek R. Pradhan, Ptoshia A. Burnett, Stacey McDaniel, Michael Hodges
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Publication number: 20030029776Abstract: Economical processes are disclosed for the production of fuels of reduced sulfur content from a feedstock, typically derived from natural petroleum, wherein the feedstock is comprised of limited amounts of sulfur-containing organic compounds as unwanted impurities. The processes involve integrated, multistage processes which include pretreatment of a light naphtha with a solid adsorbent to remove basic nitrogen containing compounds, chemical conversion of one or more of the sulfur-containing impurities to higher boiling products by alkylation, and removing the higher boiling products by fractional distillation. Advantageously, the processes include selective hydrogenation of the high-boiling fraction whereby the incorporation of hydrogen into hydrocarbon compounds, sulfur-containing organic compounds, and/or nitrogen-containing organic compounds assists by hydrogenation removal of sulfur and/or nitrogen.Type: ApplicationFiled: July 31, 2001Publication date: February 13, 2003Inventors: Vivek R. Pradhan, Ptoshia A. Burnett, Stacey McDaniel, Michael Hodges
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Publication number: 20020121458Abstract: A product of reduced sulfur content is produced from an olefin-containing hydrocarbon feedstock which includes sulfur-containing impurities. The feedstock is contacted with an olefin-modification catalyst in a reaction zone under conditions which are effective to produce an intermediate product which has a reduced amount of olefinic unsaturation relative to that of the feedstock as measured by bromine number. The intermediate product is then contacted with a hydrodesulfurization catalyst in the presence of hydrogen under conditions which are effective to convert at least a portion of its sulfur-containing impurities to hydrogen sulfide.Type: ApplicationFiled: January 21, 2000Publication date: September 5, 2002Inventors: Vivek R. Pradhan, Ptoshia A. Burnett, George A. Huff
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Publication number: 20020121459Abstract: A product of reduced sulfur content is produced from an olefin-containing hydrocarbon feedstock which includes sulfur-containing impurities. The feedstock is contacted with an olefin-modification catalyst in a reaction zone under conditions which are effective to produce an intermediate product which has a reduced amount of olefinic unsaturation relative to that of the feedstock as measured by bromine number. The intermediate product is then separated into fractions of different volatility, and the lowest boiling fraction is contacted with a hydrodesulfurization catalyst in the presence of hydrogen under conditions which are effective to convert at least a portion of its sulfur-containing impurities to hydrogen sulfide.Type: ApplicationFiled: January 21, 2000Publication date: September 5, 2002Inventors: Vivek R. Pradhan, Ptoshia A. Burnett, George A. Huff