Patents by Inventor Maruti Bhandarkar
Maruti Bhandarkar 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).
-
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
-
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
-
Patent number: 10773958Abstract: Disclosed are processes for purifying feed streams containing hydrogen sulfide and sulfur-containing impurities by removing sulfur-containing impurities, such as elemental sulfur and polysulfanes, using solid catalytic sorbents. Also disclosed are processes for producing hydrogen sulfide.Type: GrantFiled: March 21, 2014Date of Patent: September 15, 2020Assignee: Chevron Phillips Chemical Company LPInventors: Daniel M. Hasenberg, Mitchell D. Refvik, Michael S. Matson, Maruti Bhandarkar, Ronald D. Knudsen
-
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
-
Patent number: 10597345Abstract: Provided herein are methods of inhibiting polymerization of vinyl aromatic monomers. The methods include distilling a vinyl aromatic monomer in a distillation column to form a vinyl aromatic monomer distillate; removing the vinyl aromatic monomer distillate from the distillation column; combining the vinyl aromatic monomer distillate with 4-tert-butylcatechol (TBC) to form a treated distillate; and adding a reflux liquid that includes the treated distillate to the distillation column liquid of the distillation column. An added oxygen gas may be present in a distillation column liquid in an amount of at least 1 ppmw, based on the weight of the vinyl aromatic monomer.Type: GrantFiled: May 2, 2018Date of Patent: March 24, 2020Assignee: Chevron Phillips Chemical Company LPInventors: William D. Treleaven, Maruti Bhandarkar, Stephen L. Kelly, Wei Wang
-
Publication number: 20190337877Abstract: Provided herein are methods of inhibiting polymerization of vinyl aromatic monomers. The methods include distilling a vinyl aromatic monomer in a distillation column to form a vinyl aromatic monomer distillate; removing the vinyl aromatic monomer distillate from the distillation column; combining the vinyl aromatic monomer distillate with 4-tert-butylcatechol (TBC) to form a treated distillate; and adding a reflux liquid that includes the treated distillate to the distillation column liquid of the distillation column. An added oxygen gas may be present in a distillation column liquid in an amount of at least 1 ppmw, based on the weight of the vinyl aromatic monomer.Type: ApplicationFiled: May 2, 2018Publication date: November 7, 2019Inventors: William D. Treleaven, Maruti Bhandarkar, Stephen L. Kelly, Wei Wang
-
Patent number: 10280128Abstract: In a process for alkylating an aromatic hydrocarbon feedstock with an olefin feedstock, at least one of the aromatic hydrocarbon and olefin feedstocks is passed through a pretreatment unit containing an adsorbent such that the adsorbent removes impurities contained by the feedstock. Passage of the at least one feedstock through the pretreatment unit is then terminated and a heated inert gas is passed through the pretreatment unit such that the inert gas desorbs impurities from the adsorbent to produce an inert gas effluent stream containing the desorbed impurities. A condensable fluid is added to at least part of the inert gas effluent stream such that at least a portion of the impurities contained therein condense with said fluid to leave a purified inert gas stream, which is recycled to the pretreatment unit.Type: GrantFiled: July 25, 2013Date of Patent: May 7, 2019Assignee: BADGER LICENSING LLCInventors: Brian Maerz, Douglas Hubbell, Maruti Bhandarkar, Vijay Nanda
-
Patent number: 10138180Abstract: In a process for producing styrene, benzene is alkylated with ethylene to produce ethylbenzene and at least some of the ethylbenzene is dehydrogenated to produce styrene, together with benzene and toluene as by-products. At least part of the benzene by-product is passed through a bed of an adsorbent comprising at least one of an acidic clay, alumina, an acidic ion exchange resin and an acidic molecular sieve to remove basic nitrogenous impurities therefrom and produce a purified benzene by-product, which is then recycled to the alkylation step.Type: GrantFiled: November 27, 2012Date of Patent: November 27, 2018Assignee: BADGER LICENSING LLCInventors: Brian Maerz, Vijay Nanda, Maruti Bhandarkar, Matthew Vincent
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
Patent number: 9199892Abstract: The present invention provides an improved process for the catalytic conversion of a feedstock comprising an alkylatable aromatic compound and an alkylating agent to form a conversion product comprising the desired alkylaromatic compound by contacting said feedstock in at least partial liquid phase under catalytic conversion conditions with a catalyst composition comprising a porous crystalline material having a structure type of FAU, BEA* or MWW, or a mixture thereof, wherein the porous crystalline material has a Relative Activity measured at 220° C. as an RA220 of at least 7.5 or measured at 180° C. as RA180 of at least 2.5, allowing operation at lower reaction pressures, e.g., a reaction pressure of about 450 psig (3102 kPa) or less, and lower alkylating agent feed supply pressure of 450 psig (3102 kPa) or less.Type: GrantFiled: January 22, 2013Date of Patent: December 1, 2015Assignee: ExxonMobil Chemical Patents Inc.Inventors: Matthew J. Vincent, Vijay Nanda, Brian Maerz, Maruti Bhandarkar