Patents by Inventor Harvey D. Hensley
Harvey D. Hensley 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: 7718838Abstract: A process is provided to stabilize and/or reactivate an olefin production catalyst system which comprises contacting an olefin production catalyst system, either before or after use, with an aromatic compound.Type: GrantFiled: December 12, 2006Date of Patent: May 18, 2010Assignee: Chevron Phillips Chemical Company LPInventors: William M. Woodard, Warren M. Ewert, Harvey D. Hensley, Mark E. Lashier, Glyndal D. Cowan, Jeffrey W. Freeman, Ralph V. Franklin, Ronald D. Knudsen, Richard L. Anderson, Lyle R. Kallenbach, Bruce E. Kreischer
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Patent number: 7157612Abstract: A process is provided to stabilize and/or reactivate an olefin production catalyst system which comprises contacting an olefin production catalyst system, either before or after use, with an aromatic compound.Type: GrantFiled: June 18, 2004Date of Patent: January 2, 2007Assignee: Phillips Petroleum CompanyInventors: Warren M. Ewert, William M. Woodard, Harvey D. Hensley, Mark E. Lashier, Glyndal D. Cowan, Jeffrey W. Freeman, Ralph V. Franklin, Ronald D. Knudsen, Richard L. Anderson, Lyle R. Kallenbach, Bruce E. Kreischer
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Patent number: 7033545Abstract: A polymerization loop reactor including a loop reaction zone, a continuous takeoff, and a fluid slurry disposed in the reaction zone. A generally cylindrical wall defines the loop reaction zone. The length of the loop reaction zone and the nominal outside diameter of the generally cylindrical wall define a length/diameter ratio greater than 250. The reactor can be charged with a fluid slurry including an olefin monomer reactant, solid olefin polymer particles, and a liquid diluent. The concentration of the solid olefin polymer particles in the slurry can be greater than 40 weight percent based on the weight of polymer particles and the weight of liquid diluent. Also disclosed is a polymerization process carried out by polymerizing, in the loop reaction zone of a reactor as defined above, at least one olefin monomer in a liquid diluent to produce a fluid slurry as defined above.Type: GrantFiled: September 20, 2002Date of Patent: April 25, 2006Assignee: Chevon Phillips Chemical Company, LPInventors: Scott E. Kufeld, Thomas A. Reid, John H. Tait, David H. Burns, Donald W. Verser, Harvey D. Hensley, David J. Przelomski, Teddy H. Cymbaluk, Robert K. Franklin, Ethelwoldo P. Perez, John D. Hottovy
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Publication number: 20040228775Abstract: A process is provided to stabilize and/or reactivate an olefin production catalyst system which comprises contacting an olefin production catalyst system, either before or after use, with an aromatic compound.Type: ApplicationFiled: June 18, 2004Publication date: November 18, 2004Inventors: Warren M. Ewert, William M. Woodard, Harvey D. Hensley, Mark E. Lashier, Glyndal D. Cowan, Jeffrey W. Freeman, Ralph V. Franklin, Ronald D. Knudsen, Richard L. Anderson, Lyle R. Kallenbach, Bruce E. Kreischer
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Patent number: 6806324Abstract: An olefin polymerization process wherein monomer, diluent and catalyst are circulated in a continuous loop reactor and product slurry is recovered by means of a continuous product take off. The product slurry is exposed to a pressure drop in a flash zone, producing a second slurry and vaporized diluent. The vaporized diluent produced in said flash chamber is condensed by heat exchange, without compression.Type: GrantFiled: June 20, 2002Date of Patent: October 19, 2004Assignee: Phillips Petroleum CompanyInventors: John D. Hottovy, Harvey D. Hensley, David J. Przelomski, Teddy H. Cymbaluk, Robert K. Franklin, III, Ethelwoldo P. Perez
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Publication number: 20040192860Abstract: An olefin polymerization process wherein monomer, diluent and catalyst are circulated in a continuous loop reactor and product slurry is recovered by means of a continuous product take off. The continuous product allows operating the reaction at significantly higher solids content in the circulating slurry. In a preferred embodiment, the slurry is heated in a flash line heater and passed to a high pressure flash where a majority of the diluent is separated and thereafter condensed by simple heat exchange, without compression, and thereafter recycled. Also an olefin polymerization process operating at higher reactor solids by virtue of more aggressive circulation.Type: ApplicationFiled: May 19, 2004Publication date: September 30, 2004Inventors: John D. Hottovy, Harvey D. Hensley, David J. Przelomski, Teddy H. Cymbaluk, Robert K. Franklin, Ethelwoldo P. Perez
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Patent number: 6743869Abstract: An olefin polymerization process wherein monomer, at least one olefin comonomer different from the olefin monomer, diluent and catalyst are circulated in a continuous loop reactor and product slurry is recovered by means of a continuous product take off. The continuous product allows operating the reaction at significantly higher solids content in the circulating slurry.Type: GrantFiled: June 20, 2002Date of Patent: June 1, 2004Assignee: Phillips Petroleum CompanyInventors: Robert K. Franklin, III, John D. Hottovy, Harvey D. Hensley, David J. Przelomski, Teddy H. Cymbaluk, Ethelwoldo P. Perez
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Publication number: 20030229187Abstract: A polymerization loop reactor including a loop reaction zone, a continuous takeoff, and a fluid slurry disposed in the reaction zone. A generally cylindrical wall defines the loop reaction zone. The length of the loop reaction zone and the nominal outside diameter of the generally cylindrical wall define a length/diameter ratio greater than 250. The reactor can be charged with a fluid slurry including an olefin monomer reactant, solid olefin polymer particles, and a liquid diluent. The concentration of the solid olefin polymer particles in the slurry can be greater than 40 weight percent based on the weight of polymer particles and the weight of liquid diluent. Also disclosed is a polymerization process carried out by polymerizing, in the loop reaction zone of a reactor as defined above, at least one olefin monomer in a liquid diluent to produce a fluid slurry as defined above.Type: ApplicationFiled: September 20, 2002Publication date: December 11, 2003Inventors: Scott E. Kufeld, Thomas A. Reid, John H. Tait, David H. Burns, Donald W. Verser, Harvey D. Hensley, David J. Przelomski, Teddy H. Cymbaluk, Robert K. Franklin, Ethelwoldo P. Perez, John D. Hottovy
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Publication number: 20030092856Abstract: An olefin polymerization process wherein monomer, diluent and catalyst are circulated in a continuous loop reactor and product slurry is recovered by means of a continuous product take off. The continuous product allows operating the reaction at significantly higher solids content in the circulating slurry. In a preferred embodiment, the slurry is heated in a flash line heater and passed to a high pressure flash where a majority of the diluent is separated and thereafter condensed by simple heat exchange, without compression, and thereafter recycled. Also an olefin polymerization process operating at higher reactor solids by virtue of more aggressive circulation.Type: ApplicationFiled: November 20, 2002Publication date: May 15, 2003Inventors: John D. Hottovy, Harvey D. Hensley, David J. Przelomski, Teddy H. Cymbaluk, Robert K. Franklin, Ethelwoldo P. Perez
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Publication number: 20030050409Abstract: An olefin polymerization process wherein monomer, diluent and catalyst are circulated in a continuous loop reactor and product slurry is recovered by means of a continuous product take off. The continuous product allows operating the reaction at significantly higher solids content in the circulating slurry. In a preferred embodiment, the slurry is heated in a flash line heater and passed to a high pressure flash where a majority of the diluent is separated and thereafter condensed by simple heat exchange, without compression, and thereafter recycled. Also an olefin polymerization process operating at higher reactor solids by virtue of more aggressive circulation.Type: ApplicationFiled: August 26, 2002Publication date: March 13, 2003Inventors: John D. Hottovy, Harvey D. Hensley, David J. Przelomski, Teddy H. Cymbaluk, Robert K. Franklin,, Ethelwoldo P. Perez
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Publication number: 20030027944Abstract: An olefin polymerization process wherein monomer, diluent and catalyst are circulated in a continuous loop reactor and product slurry is recovered by means of a continuous product take off. The continuous product allows operating the reaction at significantly higher solids content in the circulating slurry. Also an olefin polymerization process operating at higher reactor solids by virtue of more aggressive circulation. The fluid slurry is circulated in the loop reaction zone with a pump providing a pressure differential of at least 18 psi.Type: ApplicationFiled: June 20, 2002Publication date: February 6, 2003Applicant: Phillips Petroleum CompanyInventors: John D. Hottovy, Harvey D. Hensley, David J. Przelomski, Teddy H. Cymbaluk, Robert K. Franklin, Ethelwoldo P. Perez
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Publication number: 20030023011Abstract: An olefin polymerization process wherein monomer, diluent and catalyst are circulated in a continuous loop reactor and product slurry is recovered by means of a continuous product take off. The product slurry is exposed to a pressure drop in a flash zone, producing a second slurry and vaporized diluent. The vaporized diluent produced in said flash chamber is condensed by heat exchange, without compression.Type: ApplicationFiled: June 20, 2002Publication date: January 30, 2003Applicant: Phillips Petroleum CompanyInventors: John D. Hottovy, Harvey D. Hensley, David J. Przelomski, Teddy H. Cymbaluk, Robert K. Franklin, Ethelwoldo P. Perez
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Publication number: 20030023009Abstract: An olefin polymerization process wherein monomer, at least one olefin comonomer different from the olefin monomer, diluent and catalyst are circulated in a continuous loop reactor and product slurry is recovered by means of a continuous product take off. The continuous product allows operating the reaction at significantly higher solids content in the circulating slurry.Type: ApplicationFiled: June 20, 2002Publication date: January 30, 2003Applicant: Phillips Petroleum CompanyInventors: Robert K. Franklin, John D. Hottovy, Harvey D. Hensley, David J. Przelomski, Teddy H. Cymbaluk, Ethelwoldo P. Perez
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Publication number: 20030023010Abstract: An olefin polymerization process wherein monomer, diluent and catalyst are circulated in a continuous loop reactor and product slurry is recovered by means of a continuous product take off. The continuous product allows operating the reaction at significantly higher solids content in the circulating slurry. The concentration of solid olefin polymer particles in the slurry in the reaction zone may be maintained at a value of 45 weight percent or higher, based on the weight of polymer particles and the weight of the liquid diluent.Type: ApplicationFiled: June 20, 2002Publication date: January 30, 2003Applicant: Phillips Petroleum CompanyInventors: John D. Hottovy, Harvey D. Hensley, David J. Przelomski, Teddy H. Cymbaluk, Robert K. Franklin, Ethelwoldo P. Perez
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Publication number: 20030012705Abstract: An olefin polymerization process wherein monomer, at least one olefin comonomer different from the olefin monomer, diluent and catalyst are circulated in a continuous loop reactor and product slurry is recovered by means of a continuous product take off. The continuous product allows operating the reaction at significantly higher solids content in the circulating slurry. The polymerization process operates at a space-time yield of at least 2.18 lb/hr-gal.Type: ApplicationFiled: June 20, 2002Publication date: January 16, 2003Applicant: Phillips Petroleum CompanyInventors: John D. Hottovy, Harvey D. Hensley, David J. Przelomski, Teddy H. Cymbaluk, Robert K. Franklin, Ethelwoldo P. Perez
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Publication number: 20020187081Abstract: An olefin polymerization process wherein monomer, diluent and catalyst are circulated in a continuous loop reactor and product slurry is recovered by means of a continuous product take off. The continuous product allows operating the reaction at significantly higher solids content in the circulating slurry. The concentration of ethylene in the circulating slurry is at least 3.67 weight percent and the average concentration of solid olefin polymer particles is greater than 40 weight percent.Type: ApplicationFiled: June 20, 2002Publication date: December 12, 2002Applicant: Phillips Petroleum CompanyInventors: John D. Hottovy, Harvey D. Hensley, David J. Przelomski, Teddy H. Cymbaluk, Robert K. Franklin, Ethelwoldo P. Perez
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Publication number: 20020182124Abstract: A process is provided to stabilize and/or reactivate an olefin production catalyst system which comprises contacting an olefin production catalyst system, either before or after use, with an aromatic compound.Type: ApplicationFiled: October 14, 1997Publication date: December 5, 2002Inventors: WILLIAM M. WOODARD, WARREN M. EWERT, HARVEY D. HENSLEY, MARK E. LASHIER, BRUCE E. KREISCHER, GLYNDAL D. COWAN, JEFFREY W. FREEMAN, RALPH V. FRANKLIN, RONALD D. KNUDSEN, RICHARD L. ANDERSON, LYLE R. KALLENBACH
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Patent number: 6239235Abstract: An olefin polymerization process wherein monomer, diluent and catalyst are circulated in a continuous loop reactor and product slurry is recovered by means of a continuous product take off. The continuous product allows operating the reaction at significantly higher solids content in the circulating slurry. In a preferred embodiment, the slurry is heated in a flash line heater and passed to a high pressure flash where a majority of the diluent is separated and thereafter condensed by simple heat exchange, without compression, and thereafter recycled. Also an olefin polymerization process operating at higher reactor solids by virtue of more aggressive circulation.Type: GrantFiled: July 15, 1997Date of Patent: May 29, 2001Assignee: Phillips Petroleum CompanyInventors: John D. Hottovy, Harvey D. Hensley, David J. Przelomski, Teddy H. Cymbaluk, Robert K. Franklin, III, Ethelwoldo P. Perez
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Patent number: 5792896Abstract: An alkylation process for reacting alkylatable hydrocarbons in the presence of a sulfolane and hydrofluoric acid catalyst within a natural circulation reaction and circulation system.Type: GrantFiled: March 4, 1997Date of Patent: August 11, 1998Assignee: Phillips Petroleum CompanyInventors: Bruce B. Randolph, Richard L. Anderson, Harvey D. Hensley
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Patent number: 5438115Abstract: A process is provided for producing a poly(arylene sulfide) polymer which employs at least one base as a reactant, wherein the base is contacted with the polymerization reaction mixture incrementally during the polymerization.Type: GrantFiled: November 30, 1993Date of Patent: August 1, 1995Assignee: Phillips Petroleum CompanyInventors: Darryl R. Fahey, Owen H. Decker, Carlton E. Ash, Jon F. Geibel, Fernando C. Vidaurri, Jr., Lacey E. Scoggins, Harvey D. Hensley, Wei-Teh W. Shang, Jimmie J. Straw, Paul J. DesLauriers