Patents by Inventor Penny A. Zellers
Penny A. Zellers 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: 8992840Abstract: Multiple components are selected, conveyed, and measured in a polymerization system. A control system adjusts the system variables to the desired values. Portions of the components can be fed to a pre-contactor before introduction into the polymerization reactor. The catalyst component concentrations and residence times are tightly controlled in the pre-contactor to affect product properties. The pre-contactor can be a single or multiple combinations of a CSTR or plug flow pre-contactors.Type: GrantFiled: September 8, 2009Date of Patent: March 31, 2015Assignee: Chevron Phillips Chemical Company LPInventors: David H. Burns, Donald W. Verser, Elizabeth A. Benham, Max P. McDaniel, John D. Hottovy, Clay K Thurman, David A. Lockman, John O. Lawmaster, Matthew T. Haberly, Thomas H. Smith, Jerry T. Lanier, Matthew G. Thorn, Penny A. Zellers
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Publication number: 20130102742Abstract: An olefin polymerization process and apparatus wherein a fluid slurry comprising monomer, diluent and catalyst is circulated in a continuous loop reactor by two or more pumps. The process and apparatus allow operating the reaction at significantly higher solids content in the circulating fluid slurry. In a preferred embodiment, the fluid slurry is circulated by two impellers arranged so that the downstream impeller benefits from the rotational energy imparted by the upstream impeller. An olefin polymerization process operating at higher reactor solids by virtue of more aggressive circulation has improved efficiencies, particularly in larger-volume reactors.Type: ApplicationFiled: December 12, 2012Publication date: April 25, 2013Applicants: CHEVRON PHILLIPS CHEMICAL COMPANY LPInventors: Chevron Phillips Chemical Company LP, Penny A. Zellers
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Patent number: 8354063Abstract: An olefin polymerization process and apparatus wherein a fluid slurry comprising monomer, diluent and catalyst is circulated in a continuous loop reactor by two or more pumps. The process and apparatus allow operating the reaction at significantly higher solids content in the circulating fluid slurry. In a preferred embodiment, the fluid slurry is circulated by two impellers arranged so that the downstream impeller benefits from the rotational energy imparted by the upstream impeller. An olefin polymerization process operating at higher reactor solids by virtue of more aggressive circulation has improved efficiencies, particularly in larger-volume reactors.Type: GrantFiled: April 30, 2010Date of Patent: January 15, 2013Assignees: Chevron Phillips Chemical Company LP, Lawrence Pump Inc.Inventors: John D. Hottovy, Robert K. Franklin, Donald Paul Russell, Penny A. Zellers
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Patent number: 8303899Abstract: A manufacturing system for producing polyolefin includes a polymerization reactor, a flash chamber, and a purge column. In certain embodiments, the purge column may receive a solids stream directly from the flash chamber. Further, the purge column may function as a feed tank for an extruder within an extrusion/loadout system. According to certain embodiments, the manufacturing system may be configured to consume less than 445 kilowatt-hours of energy per metric ton of polyolefin produced based on consumption of electricity, steam, and fuel gas.Type: GrantFiled: February 14, 2012Date of Patent: November 6, 2012Assignee: Chevron Phillips Chemical Company LPInventors: Robert R. McElvain, John D. Hottovy, Ralph W. Romig, Donald W. Verser, David H. Burns, John H. Tait, Richard Peacock, James E. Hein, Scott E. Kufeld, Carl W. Fenderson, Anurag Gupta, Dale A. Zellers, Penny A. Zellers, legal representative
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Publication number: 20120139149Abstract: A manufacturing system for producing polyolefin includes a polymerization reactor, a flash chamber, and a purge column. In certain embodiments, the purge column may receive a solids stream directly from the flash chamber. Further, the purge column may function as a feed tank for an extruder within an extrusion/loadout system. According to certain embodiments, the manufacturing system may be configured to consume less than 445 kilowatt-hours of energy per metric ton of polyolefin produced based on consumption of electricity, steam, and fuel gas.Type: ApplicationFiled: February 14, 2012Publication date: June 7, 2012Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LPInventors: Robert R. McElvain, John D. Hottovy, Ralph W. Romig, Donald W. Verser, David H. Burns, John H. Tait, Richard Peacock, James E. Hein, Scott E. Kufeld, Carl W. Fenderson, Anurag Gupta, Dale A. Zellers, Penny A. Zellers
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Patent number: 8128877Abstract: A manufacturing process for producing polyolefin, having a feed system, a reactor system including at least one polymerization reactor, a diluent/monomer recovery system, a fractionation system, and an extrusion/loadout system having an extruder. The manufacturing process is configured to consume less than 325 kilowatt-hours of electricity per metric ton of polyolefin produced.Type: GrantFiled: August 10, 2011Date of Patent: March 6, 2012Assignee: Chevron Phillips Chemical Company LPInventors: Robert R. McElvain, John D. Hottovy, Ralph W. Romig, Donald W. Verser, David H. Burns, John H. Tait, Richard Peacock, James E. Hein, Scott E. Kufeld, Carl W. Fenderson, Anurag Gupta, Dale A. Zellers, Penny A. Zellers, legal representative
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Publication number: 20110300025Abstract: A manufacturing process for producing polyolefin, having a feed system, a reactor system including at least one polymerization reactor, a diluent/monomer recovery system, a fractionation system, and an extrusion/loadout system having an extruder. The manufacturing process is configured to consume less than 325 kilowatt-hours of electricity per metric ton of polyolefin produced.Type: ApplicationFiled: August 10, 2011Publication date: December 8, 2011Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LPInventors: Robert R. McElvain, John D. Hottovy, Ralph W. Romig, Donald W. Verser, David H. Burns, John H. Tait, Richard Peacock, James E. Hein, Scott E. Kufeld, Carl W. Fenderson, Anurag Gupta, Dale A. Zellers, Penny A. Zellers
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Patent number: 8017701Abstract: A manufacturing process for producing polyolefin, having a feed system, a reactor system including at least one polymerization reactor, a diluent/monomer recovery system, a fractionation system, and an extrusion/loadout system having an extruder. The manufacturing process is configured to consume less than 325 kilowatt-hours of electricity per metric ton of polyolefin produced.Type: GrantFiled: August 26, 2005Date of Patent: September 13, 2011Assignee: Chevron Phillips Chemical Company LPInventors: Robert R. McElvain, John D. Hottovy, Ralph W. Romig, Donald W. Verser, David H. Burns, John H. Tait, Richard Peacock, James E. Hein, Scott E. Kufeld, Carl W. Fenderson, Anurag Gupta, Dale A. Zellers, Penny A. Zellers, legal representative
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Publication number: 20100215550Abstract: An olefin polymerization process and apparatus wherein a fluid slurry comprising monomer, diluent and catalyst is circulated in a continuous loop reactor by two or more pumps. The process and apparatus allow operating the reaction at significantly higher solids content in the circulating fluid slurry. In a preferred embodiment, the fluid slurry is circulated by two impellers arranged so that the downstream impeller benefits from the rotational energy imparted by the upstream impeller. An olefin polymerization process operating at higher reactor solids by virtue of more aggressive circulation has improved efficiencies, particularly in larger-volume reactors.Type: ApplicationFiled: April 30, 2010Publication date: August 26, 2010Applicant: Chevron Phillips Chemical Company LPInventors: John D. Hottovy, Dale A. Zellers, Penny A. Zellers, Robert K. Franklin, III, Donald Paul Russell
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Patent number: 7736597Abstract: An olefin polymerization process and apparatus wherein a fluid slurry comprising monomer, diluent and catalyst is circulated in a continuous loop reactor by two or more pumps. The process and apparatus allow operating the reaction at significantly higher solids content in the circulating fluid slurry. In a preferred embodiment, the fluid slurry is circulated by two impellers arranged so that the downstream impeller benefits from the rotational energy imparted by the upstream impeller. An olefin polymerization process operating at higher reactor solids by virtue of more aggressive circulation has improved efficiencies, particularly in larger-volume reactors.Type: GrantFiled: March 20, 2006Date of Patent: June 15, 2010Assignee: Chevron Phillips Chemical Company LPInventors: John D. Hottovy, Dale A. Zellers, Penny A. Zellers, legal representative, Robert K. Franklin, Donald Paul Russell
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Publication number: 20090326168Abstract: Multiple components are selected, conveyed, and measured in a polymerization system. A control system adjusts the system variables to the desired values. Portions of the components can be fed to a pre-contactor before introduction into the polymerization reactor. The catalyst component concentrations and residence times are tightly controlled in the pre-contactor to affect product properties. The pre-contactor can be a single or multiple combinations of a CSTR or plug flow pre-contactors.Type: ApplicationFiled: September 8, 2009Publication date: December 31, 2009Applicant: Chevron Phillips Chemical Company LPInventors: David H. Burns, Donald W. Verser, Elizabeth A. Benham, Max P. McDaniel, John D. Hottovy, Dale A. Zellers, Penny A. Zeller, Clay K. Thurman, David A. Lockman, John O. Lawmaster, Matthew T. Haberly, Thomas H. Smith, Jerry T. Lanier, Matthew G. Thorn
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Patent number: 7615596Abstract: Multiple components are selected, conveyed, and measured in a polymerization system. A control system adjusts the system variables to the desired values. Portions of the components can be fed to a pre-contactor before introduction into the polymerization reactor. The catalyst component concentrations and residence times are tightly controlled in the pre-contactor to affect product properties. The pre-contactor can be a single or multiple combinations of a CSTR or plug flow pre-contactors.Type: GrantFiled: September 30, 2005Date of Patent: November 10, 2009Assignee: Chevron Phillips Chemical Company LPInventors: David H. Burns, Donald W. Verser, Elizabeth A. Benham, Max P. McDaniel, John D. Hottovy, Dale A. Zellers, Penny A. Zellers, legal representative, Clay K Thurman, David A. Lockman, John O. Lawmaster, Matthew T. Haberly, Thomas H. Smith, Jerry T. Lanier, Matthew G. Thorn
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Publication number: 20070078238Abstract: Multiple components are selected, conveyed, and measured in a polymerization system. A control system adjusts the system variables to the desired values. Portions of the components can be fed to a pre-contactor before introduction into the polymerization reactor. The catalyst component concentrations and residence times are tightly controlled in the pre-contactor to affect product properties. The pre-contactor can be a single or multiple combinations of a CSTR or plug flow pre-contactors.Type: ApplicationFiled: September 30, 2005Publication date: April 5, 2007Inventors: David Burns, Donald Verser, Elizabeth Benham, Max McDaniel, John Hottovy, Dale Zellers, Penny Zellers, Clay Thurman, David Lockman, John Lawmaster, Matthew Haberly, Thomas Smith, Jerry Lanier, Matthew Thorn