Patents by Inventor Catherine M. Gill
Catherine M. Gill 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: 10913046Abstract: A system and method for a first reactor to produce a transfer slurry having a first polyolefin polymerized in the first reactor, a heat-removal zone to remove heat from the transfer slurry, and a second reactor to receive the transfer slurry cooled by the heat-removal zone, the second reactor to produce a product slurry having a product polyolefin which includes the first polyolefin and a second polyolefin polymerized in the second reactor.Type: GrantFiled: June 1, 2018Date of Patent: February 9, 2021Assignee: Chevron Phillips Chemical Company LPInventors: Maruti Bhandarkar, Elizabeth A. Benham, Rebecca A. Gonzales, Joel A. Mutchler, Catherine M. Gill, Timothy O. Odi, Thanh T. Nguyen, Scott E. Kufeld
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Patent number: 10799847Abstract: A polyolefin production system including: a first reactor configured to produce a first discharge slurry having a first polyolefin; a second reactor configured to produce a second discharge slurry having a second polyolefin; and a post-reactor treatment zone having at least a separation vessel configured to receive the second discharge slurry or both the first discharge slurry and the second discharge slurry.Type: GrantFiled: September 19, 2016Date of Patent: October 13, 2020Assignee: Chevron Phillips Chemical Company LPInventors: Maruti Bhandarkar, Elizabeth Ann Benham, Rebecca A. Gonzales, Scott E. Kufeld, Joel A. Mutchler, Catherine M. Gill, Thanh T. Nguyen, Timothy O. Odi
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Patent number: 10646845Abstract: A system and method for a first reactor to produce a transfer slurry having a first polyolefin polymerized in the first reactor, a heat-removal zone to remove heat from the transfer slurry, and a second reactor to receive the transfer slurry cooled by the heat-removal zone, the second reactor to produce a product slurry having a product polyolefin which includes the first polyolefin and a second polyolefin polymerized in the second reactor.Type: GrantFiled: July 3, 2013Date of Patent: May 12, 2020Assignee: Chevron Phillips Chemical Company LPInventors: Maruti Bhandarkar, Elizabeth A Benham, Rebecca A. Gonzales, Joel A Mutchler, Catherine M. Gill, Timothy O. Odi, Thanh T. Nguyen, Scott E. Kufeld
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Publication number: 20180272309Abstract: A system and method for a first reactor to produce a transfer slurry having a first polyolefin polymerized in the first reactor, a heat-removal zone to remove heat from the transfer slurry, and a second reactor to receive the transfer slurry cooled by the heat-removal zone, the second reactor to produce a product slurry having a product polyolefin which includes the first polyolefin and a second polyolefin polymerized in the second reactor.Type: ApplicationFiled: June 1, 2018Publication date: September 27, 2018Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LPInventors: Maruti Bhandarkar, Elizabeth A. Benham, Rebecca A. Gonzales, Joel A. Mutchler, Catherine M. Gill, Timothy O. Odi, Thanh T. Nguyen, Scott E. Kufeld
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Patent number: 9963523Abstract: A system and method for discharging a transfer slurry from a first polymerization reactor through a transfer line to a second polymerization reactor, the transfer slurry including at least diluent and a first polyethylene. A product slurry is discharged from the second polymerization reactor, the product slurry including at least diluent, the first polyethylene, and a second polyethylene. The velocity, pressure drop, or pressure loss due to friction in the transfer line is determined, and a process variable adjusted in response to the velocity, pressure drop, or pressure loss not satisfying a specified value.Type: GrantFiled: December 2, 2016Date of Patent: May 8, 2018Assignee: CHEVRON PHILLIPS CHEMICAL COMPANY, LPInventors: Maruti Bhandarkar, Elizabeth Ann Benham, Rebecca A. Gonzales, Scott E. Kufeld, Joel A. Mutchler, Catherine M. Gill, Thanh T. Nguyen, Timothy O. Odi
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Publication number: 20170081436Abstract: A system and method for discharging a transfer slurry from a first polymerization reactor through a transfer line to a second polymerization reactor, the transfer slurry including at least diluent and a first polyethylene. A product slurry is discharged from the second polymerization reactor, the product slurry including at least diluent, the first polyethylene, and a second polyethylene. The velocity, pressure drop, or pressure loss due to friction in the transfer line is determined, and a process variable adjusted in response to the velocity, pressure drop, or pressure loss not satisfying a specified value.Type: ApplicationFiled: December 2, 2016Publication date: March 23, 2017Inventors: Maruti Bhandarkar, Elizabeth Ann Benham, Rebecca A. Gonzales, Scott E. Kufeld, Joel A. Mutchler, Catherine M. Gill, Thanh T. Nguyen, Timothy O. Odi
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Patent number: 9556288Abstract: A system and method for polymerizing olefin in the presence of a chain transfer agent in a first reactor to form a first polyolefin, discharging from the first reactor a transfer slurry having the first polyolefin and the chain transfer agent, and processing the transfer slurry in a separator to remove chain transfer agent and to provide a fluff slurry having the first polyolefin and a lower content of chain transfer agent than in the transfer slurry. The system and method provide for feeding the fluff slurry to a second reactor, polymerizing olefin in the second reactor to form a second polyolefin, and discharging from the second reactor a slurry having the second polyolefin.Type: GrantFiled: January 15, 2015Date of Patent: January 31, 2017Assignee: Chevron Phillips Chemical Company, LPInventors: Maruti Bhandarkar, Elizabeth A Benham, Rebecca A. Gonzales, Scott E. Kufeld, Joel A Mutchler, Catherine M. Gill, Thanh T. Nguyen, Timothy O. Odi
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Patent number: 9556283Abstract: A system and method for discharging a transfer slurry from a first polymerization reactor through a transfer line to a second polymerization reactor, the transfer slurry including at least diluent and a first polyethylene. A product slurry is discharged from the second polymerization reactor, the product slurry including at least diluent, the first polyethylene, and a second polyethylene. The velocity, pressure drop, or pressure loss due to friction in the transfer line is determined, and a process variable adjusted in response to the velocity, pressure drop, or pressure loss not satisfying a specified value.Type: GrantFiled: July 23, 2014Date of Patent: January 31, 2017Assignee: Chevron Phillips Chemical Company, LPInventors: Maruti Bhandarkar, Elizabeth Ann Benham, Rebecca A. Gonzales, Scott E. Kufeld, Joel A. Mutchler, Catherine M. Gill, Thanh T. Nguyen, Timothy O. Odi
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Publication number: 20170022299Abstract: A system and method for discharging a transfer slurry from a first polymerization reactor through a transfer line to a second polymerization reactor, the transfer slurry including at least diluent and a first polyethylene. A product slurry is discharged from the second polymerization reactor, the product slurry including at least diluent, the first polyethylene, and a second polyethylene. The velocity, pressure drop, or pressure loss due to friction in the transfer line is determined, and a process variable adjusted in response to the velocity, pressure drop, or pressure loss not satisfying a specified value.Type: ApplicationFiled: July 23, 2014Publication date: January 26, 2017Inventors: Maruti Bhandarkar, Elizabeth Ann Benham, Rebecca A. Gonzales, Scott E. Kufeld, Joel A. Mutchler, Catherine M. Gill, Thanh T. Nguyen, Timothy O. Odi
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Publication number: 20170001167Abstract: A polyolefin production system including: a first reactor configured to produce a first discharge slurry having a first polyolefin; a second reactor configured to produce a second discharge slurry having a second polyolefin; and a post-reactor treatment zone having at least a separation vessel configured to receive the second discharge slurry or both the first discharge slurry and the second discharge slurry.Type: ApplicationFiled: September 19, 2016Publication date: January 5, 2017Inventors: Maruti Bhandarkar, Elizabeth Ann Benham, Rebecca A. Gonzales, Scott E. Kufeld, Joel A. Mutchler, Catherine M. Gill, Thanh T. Nguyen, Timothy O. Odi
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Patent number: 9403921Abstract: A system and method for polymerizing olefin in the presence of a chain transfer agent in a first reactor to form a first polyolefin, discharging from the first reactor a transfer slurry having the first polyolefin and the chain transfer agent, and processing the transfer slurry in a separator to remove chain transfer agent and to provide a fluff slurry having the first polyolefin and a lower content of chain transfer agent than in the transfer slurry. The system and method provide for feeding the fluff slurry to a second reactor, polymerizing olefin in the second reactor to form a second polyolefin, and discharging from the second reactor a slurry having the second polyolefin.Type: GrantFiled: August 18, 2015Date of Patent: August 2, 2016Assignee: Chevron Phillips Chemical Company, LPInventors: Maruti Bhandarkar, Elizabeth A. Benham, Rebecca A. Gonzales, Scott E. Kufeld, Joel A. Mutchler, Catherine M. Gill, Thanh T. Nguyen, Timothy O. Odi
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Patent number: 9340627Abstract: A reactor system containing one or more loop reactors for olefin polymerization is provided. The loop reactors include vertical sections, elbow sections, and/or horizontal sections connected into one or more loop reaction zones to polymerize an olefin monomer in the presence of a liquid diluent into a slurry comprising particles of a polyolefin polymer. The reactor system footprint is reduced to increase production efficiency and save cost, while maintaining a high processing capacity. In one embodiment a horizontal length (LH) of at least one horizontal section is greatly reduced with maintained processing capacity. In another embodiment, at least one elbow section of the reactor system is configured to maintain a Dean number (Dn) of the slurry flowing therein to be higher than 3,000,000.Type: GrantFiled: May 21, 2014Date of Patent: May 17, 2016Inventors: Scott E. Kufeld, Joel A. Mutchler, Ralph W. Romig, John D Stewart, Catherine M Gill, Bruce E. Kreischer, John D. Hottovy
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Patent number: 9340629Abstract: A technique for polymerizing ethylene on catalyst in a first polymerization reactor and in a second polymerization reactor to form polyethylene particles, and controlling particle size of the polyethylene particles.Type: GrantFiled: December 13, 2012Date of Patent: May 17, 2016Assignee: Chevron Phillips Chemical Company LPInventors: Maruti Bhandarkar, Elizabeth A Benham, Rebecca A. Gonzales, Scott E. Kufeld, Joel A Mutchler, Catherine M. Gill, Thanh T. Nguyen, Timothy O. Odi
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Publication number: 20160024231Abstract: A system and method for discharging a transfer slurry from a first polymerization reactor through a transfer line to a second polymerization reactor, the transfer slurry including at least diluent and a first polyethylene. A product slurry is discharged from the second polymerization reactor, the product slurry including at least diluent, the first polyethylene, and a second polyethylene. The velocity, pressure drop, or pressure loss due to friction in the transfer line is determined, and a process variable adjusted in response to the velocity, pressure drop, or pressure loss not satisfying a specified value.Type: ApplicationFiled: July 23, 2014Publication date: January 28, 2016Inventors: Maruti Bhandarkar, Elizabeth Ann Benham, Rebecca A. Gonzales, Scott E. Kufeld, Joel A. Mutchler, Catherine M. Gill, Thanh T. Nguyen, Timothy O. Odi
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Publication number: 20150353652Abstract: A system and method for polymerizing olefin in the presence of a chain transfer agent in a first reactor to form a first polyolefin, discharging from the first reactor a transfer slurry having the first polyolefin and the chain transfer agent, and processing the transfer slurry in a separator to remove chain transfer agent and to provide a fluff slurry having the first polyolefin and a lower content of chain transfer agent than in the transfer slurry. The system and method provide for feeding the fluff slurry to a second reactor, polymerizing olefin in the second reactor to form a second polyolefin, and discharging from the second reactor a slurry having the second polyolefin.Type: ApplicationFiled: August 18, 2015Publication date: December 10, 2015Applicant: Chevron Phillips Chemical Company LPInventors: Maruti BHANDARKAR, Elizabeth A. BENHAM, Rebecca A. GONZALES, Scott E. KUFELD, Joel A. MUTCHLER, Catherine M. GILL, Thanh T. NGUYEN, Timothy O. ODI
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Patent number: 9079986Abstract: A system and method for producing polyolefin, including a polyolefin reactor system having: a first reactor to produce a first reactor discharge stream having a first polyolefin and a first diluent; and a second reactor to receive at least a portion of the first reactor discharge stream and to produce a second reactor discharge stream having a second polyolefin and a second diluent, wherein the second diluent is different than the first diluent.Type: GrantFiled: June 26, 2014Date of Patent: July 14, 2015Assignee: Chevron Phillips Chemical Company LPInventors: Maruti Bhandarkar, Elizabeth Ann Benham, Rebecca A. Gonzales, Scott E. Kufeld, Joel A Mutchler, Catherine M. Gill, Thanh T. Nguyen, Timothy O. Odi
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Publication number: 20150126693Abstract: A system and method for polymerizing olefin in the presence of a chain transfer agent in a first reactor to form a first polyolefin, discharging from the first reactor a transfer shiny having the first polyolefin and the chain transfer agent, and processing the transfer slurry in a separator to remove chain transfer agent and to provide a fluff slurry having the first polyolefin and a lower content of chain transfer agent than in the transfer slurry. The system and method provide for feeding the fluff slurry to a second reactor, polymerizing olefin in the second reactor to form a second polyolefin, and discharging from the second reactor a slurry having the second polyolefin.Type: ApplicationFiled: January 15, 2015Publication date: May 7, 2015Inventors: Maruti Bhandarkar, Elizabeth A. Benham, Rebecca A. Gonzales, Scott E. Kufeld, Joel A. Mutchler, Catherine M. Gill, Thanh T. Nguyen, Timothy O. Odi
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Patent number: 8987390Abstract: A system and method for polymerizing olefin in the presence of a chain transfer agent in a first reactor to form a first polyolefin, discharging from the first reactor a transfer slurry having the first polyolefin and the chain transfer agent, and processing the transfer slurry in a separator to remove chain transfer agent and to provide a fluff slurry having the first polyolefin and a lower content of chain transfer agent than in the transfer slurry. The system and method provide for feeding the fluff slurry to a second reactor, polymerizing olefin in the second reactor to form a second polyolefin, and discharging from the second reactor a slurry having the second polyolefin.Type: GrantFiled: December 18, 2012Date of Patent: March 24, 2015Assignee: Chevron Phillips Chemical Company, LPInventors: Maruti Bhandarkar, Elizabeth A Benham, Rebecca A. Gonzales, Scott E. Kufeld, Joel A Mutchler, Catherine M. Gill, Thanh T. Nguyen, Timothy O. Odi
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Patent number: 8932527Abstract: Loop reactors for olefin polymerization and processes utilizing such loop reactors are described herein. In one or more embodiments, the loop reactor generally includes a plurality of vertical sections; a plurality of elbow sections connecting the vertical sections to either a horizontal section having a horizontal length (LH) or another elbow section, at least one elbow section having an internal diameter (d), a radius (Rc) of an inner curvature and a chord length (W) and wherein the horizontal length (LH) is from 0 feet to 3 feet, the chord length (W) is 250 inches or less and a ratio (Rc/d) of the radius (Rc) of the inner curvature to the internal diameter (d) of the at least one elbow section is maintained from 2 to 4; and at least one loop reaction zone configured to polymerize an olefin monomer in the presence of a liquid diluent into a slurry comprising particles of a polyolefin polymer.Type: GrantFiled: August 17, 2014Date of Patent: January 13, 2015Assignee: Chevron Phillips Chemical Co.Inventors: Scott E. Kufeld, Joel A. Mutchler, Ralph W. Romig, John D Stewart, Catherine M Gill, Bruce E. Kreischer, John D. Hottovy
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Publication number: 20150011814Abstract: A system and method for a first reactor to produce a transfer slurry having a first polyolefin polymerized in the first reactor, a heat-removal zone to remove heat from the transfer slurry, and a second reactor to receive the transfer slurry cooled by the heat-removal zone, the second reactor to produce a product slurry having a product polyolefin which includes the first polyolefin and a second polyolefin polymerized in the second reactor.Type: ApplicationFiled: July 3, 2013Publication date: January 8, 2015Inventors: Maruti Bhandarkar, Elizabeth A. Benham, Rebecca A. Gonzales, Joel A. Mutchler, Catherine M. Gill, Timothy O. Odi, Thanh T. Nguyen, Scott E. Kufeld