Patents by Inventor Ralph W. Romig
Ralph W. Romig 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: 20230400226Abstract: Disclosed is a process and apparatus for cooling a coolant used in a heat exchange equipment in a plant. The process is performed in a plant having the apparatus disclosed herein. The process and apparatus utilize a geothermal cooling loop for cooling at least a portion of the total amount of coolant circulating in the coolant loop that is used to cool a surface of a heat exchange equipment in the plant.Type: ApplicationFiled: June 8, 2022Publication date: December 14, 2023Inventor: Ralph W. Romig
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Publication number: 20230159669Abstract: Processes for producing an activated chromium catalyst are disclosed, and these processes comprise contacting a supported chromium catalyst with a gas stream containing from 25-60 vol % oxygen at a peak activation temperature of 550-900° C. to produce the activated chromium catalyst. The linear velocity of the gas stream is 0.18-0.4 ft/sec, and the oxygen linear velocity of the gas stream is 0.05-0.15 ft/sec. The resultant activated chromium catalyst and an optional co-catalyst can be contacted with an olefin monomer and an optional olefin comonomer in a polymerization reactor system under polymerization conditions to produce an olefin polymer.Type: ApplicationFiled: January 25, 2023Publication date: May 25, 2023Inventors: Ralph W. Romig, James E. Hein, Troy Bretz, Zhihui Gu
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Patent number: 11584806Abstract: Processes for producing an activated chromium catalyst are disclosed, and these processes comprise contacting a supported chromium catalyst with a gas stream containing from 25-60 vol % oxygen at a peak activation temperature of 550-900° C. to produce the activated chromium catalyst. The linear velocity of the gas stream is 0.18-0.4 ft/sec, and the oxygen linear velocity of the gas stream is 0.05-0.15 ft/sec. The resultant activated chromium catalyst and an optional co-catalyst can be contacted with an olefin monomer and an optional olefin comonomer in a polymerization reactor system under polymerization conditions to produce an olefin polymer.Type: GrantFiled: February 19, 2021Date of Patent: February 21, 2023Assignee: Chevron Phillips Chemical Company LPInventors: Ralph W Romig, James E. Hein, Troy Bretz, Zhihui Gu
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Patent number: 11578145Abstract: A method of operating a dump tank of a polymer production process by transferring all or a portion of a content of a polymerization reactor into the dump tank, wherein the reactor contents comprise solid polymer, and liquid and gaseous non-product components, and removing at least a portion of the liquid and gaseous non-product components from the dump tank by: reducing a pressure of the dump tank, subjecting the solid polymer to a first cleaning stage comprising heating the solid polymer by introducing a first heated treatment gas into the dump tank, and subjecting the solid polymer to a second cleaning stage comprising purging the solid polymer by introducing a second heated treatment gas into the dump tank.Type: GrantFiled: May 7, 2021Date of Patent: February 14, 2023Assignee: Chevron Phillips Chemical Company LPInventors: Joseph A. Curren, James E. Hein, Ralph W. Romig, Ai-Fu Chang
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Publication number: 20220267485Abstract: Processes for producing an activated chromium catalyst are disclosed, and these processes comprise contacting a supported chromium catalyst with a gas stream containing from 25-60 vol % oxygen at a peak activation temperature of 550-900° C. to produce the activated chromium catalyst. The linear velocity of the gas stream is 0.18-0.4 ft/sec, and the oxygen linear velocity of the gas stream is 0.05-0.15 ft/sec. The resultant activated chromium catalyst and an optional co-catalyst can be contacted with an olefin monomer and an optional olefin comonomer in a polymerization reactor system under polymerization conditions to produce an olefin polymer.Type: ApplicationFiled: February 19, 2021Publication date: August 25, 2022Inventors: Ralph W Romig, James E. Hein, Troy Bretz, Zhihui Gu
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Publication number: 20210261694Abstract: A method of operating a dump tank of a polymer production process by transferring all or a portion of a content of a polymerization reactor into the dump tank, wherein the reactor contents comprise solid polymer, and liquid and gaseous non-product components, and removing at least a portion of the liquid and gaseous non-product components from the dump tank by: reducing a pressure of the dump tank, subjecting the solid polymer to a first cleaning stage comprising heating the solid polymer by introducing a first heated treatment gas into the dump tank, and subjecting the solid polymer to a second cleaning stage comprising purging the solid polymer by introducing a second heated treatment gas into the dump tank.Type: ApplicationFiled: May 7, 2021Publication date: August 26, 2021Inventors: Joseph A. CURREN, James E. HEIN, Ralph W. ROMIG, Ai-Fu CHANG
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Patent number: 11021549Abstract: A method of operating a dump tank of a polymer production process by transferring all or a portion of a content of a polymerization reactor into the dump tank, wherein the reactor contents comprise solid polymer, and liquid and gaseous non-product components, and removing at least a portion of the liquid and gaseous non-product components from the dump tank by: reducing a pressure of the dump tank, subjecting the solid polymer to a first cleaning stage comprising heating the solid polymer by introducing a first heated treatment gas into the dump tank, and subjecting the solid polymer to a second cleaning stage comprising purging the solid polymer by introducing a second heated treatment gas into the dump tank.Type: GrantFiled: May 6, 2019Date of Patent: June 1, 2021Assignee: Chevron Phillips Chemical Company, LPInventors: Joseph A. Curren, James E. Hein, Ralph W. Romig, Ai-Fu Chang
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Publication number: 20200354483Abstract: A method of operating a dump tank of a polymer production process by transferring all or a portion of a content of a polymerization reactor into the dump tank, wherein the reactor contents comprise solid polymer, and liquid and gaseous non-product components, and removing at least a portion of the liquid and gaseous non-product components from the dump tank by: reducing a pressure of the dump tank, subjecting the solid polymer to a first cleaning stage comprising heating the solid polymer by introducing a first heated treatment gas into the dump tank, and subjecting the solid polymer to a second cleaning stage comprising purging the solid polymer by introducing a second heated treatment gas into the dump tank.Type: ApplicationFiled: May 6, 2019Publication date: November 12, 2020Inventors: Joseph A. CURREN, James E. HEIN, Ralph W. ROMIG, Ai-Fu CHANG
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Patent number: 10173951Abstract: Processes and systems for olefin and diluent recovery utilizing one or more side columns, including a side rectifier column and/or a side degassing column, in combination with a heavies column.Type: GrantFiled: September 13, 2016Date of Patent: January 8, 2019Assignee: Chevron Phillips Chemical Company LPInventors: Joseph A. Curren, Ralph W. Romig, Ji Xian Loh, Timothy O. Odi
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Patent number: 10046306Abstract: A treater regeneration system in a polyolefin production system, the treater regeneration system comprising an off-line treater receiving a first portion of a regenerating stream and regenerating a desiccant in the off-line treater to yield a regenerating effluent stream, where the regenerating stream comprises a regenerating medium, and where the regenerating effluent stream comprises the regenerating medium, water and an impurity; a decanter receiving at least a portion of the regenerating effluent stream to yield the regenerating stream and a water stream, wherein the water stream comprises the water; and a stripper receiving a second portion of the regenerating stream to yield an impurity stream and a process recycle stream, wherein the impurity stream comprises at least a portion of the impurity, and wherein the process recycle stream comprises the regenerating medium of the second portion of the regenerating stream.Type: GrantFiled: November 27, 2017Date of Patent: August 14, 2018Assignee: Chevron Phillips Chemical Company LPInventors: Ralph W. Romig, Timothy O. Odi, Jennifer F. Drew
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Patent number: 10040882Abstract: Polymerization reactor systems providing integrated liquid-solid sampling systems are disclosed. Methods for operating such polymerization reactor systems and for measuring a property of the liquid portion of liquid-solid mixture are described.Type: GrantFiled: June 15, 2017Date of Patent: August 7, 2018Assignee: Chevron Phillips Chemical Company LPInventors: Stephen L. Ege, Ralph W. Romig
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Publication number: 20180078921Abstract: Disclosed are embodiments of a method of regenerating a desiccant in an off-line treater of a polyolefin production process. The method may include a heating phase followed by a cooling phase. The heating phase may involve use of a regenerating gas made from heating a treated a recycle stream of the polyolefin production process to regenerate desiccant in an off-line treater. The cooling phase may involve thermosyphoning the regenerating gas, nitrogen, an olefin-free diluent, or combinations thereof in a closed-convection loop of the off-line treater.Type: ApplicationFiled: November 27, 2017Publication date: March 22, 2018Inventors: Ralph W. ROMIG, Timothy O. ODI, Jennifer F. DREW
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Publication number: 20180072639Abstract: Processes and systems for olefin and diluent recovery utilizing one or more side columns, including a side rectifier column and/or a side degassing column, in combination with a heavies column.Type: ApplicationFiled: September 13, 2016Publication date: March 15, 2018Inventors: Joseph A. CURREN, Ralph W. ROMIG, Ji Xian LOH, Timothy O. ODI
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Patent number: 9861955Abstract: Disclosed are embodiments of a method of regenerating a desiccant in an off-line treater of a polyolefin production process. The method may include a heating phase followed by a cooling phase. The heating phase may involve use of a regenerating gas made from heating a treated a recycle stream of the polyolefin production process to regenerate desiccant in an off-line treater. The cooling phase may involve thermosyphoning the regenerating gas, nitrogen, an olefin-free diluent, or combinations thereof in a closed-convection loop of the off-line treater.Type: GrantFiled: May 3, 2017Date of Patent: January 9, 2018Assignee: Chevron Phillips Chemical Company, LPInventors: Ralph W. Romig, Timothy O. Odi, Jennifer F. Drew
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Publication number: 20170282151Abstract: Polymerization reactor systems providing integrated liquid-solid sampling systems are disclosed. Methods for operating such polymerization reactor systems and for measuring a property of the liquid portion of liquid-solid mixture are described.Type: ApplicationFiled: June 15, 2017Publication date: October 5, 2017Inventors: Stephen L. Ege, Ralph W. Romig
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Publication number: 20170232422Abstract: Disclosed are embodiments of a method of regenerating a desiccant in an off-line treater of a polyolefin production process. The method may include a heating phase followed by a cooling phase. The heating phase may involve use of a regenerating gas made from heating a treated a recycle stream of the polyolefin production process to regenerate desiccant in an off-line treater. The cooling phase may involve thermosyphoning the regenerating gas, nitrogen, an olefin-free diluent, or combinations thereof in a closed-convection loop of the off-line treater.Type: ApplicationFiled: May 3, 2017Publication date: August 17, 2017Inventors: Ralph W. ROMIG, Timothy O. ODI, Jennifer F. DREW
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Patent number: 9708426Abstract: Polymerization reactor systems providing integrated liquid-solid sampling systems are disclosed. Methods for operating such polymerization reactor systems and for measuring a property of the liquid portion of liquid-solid mixture are described.Type: GrantFiled: June 1, 2015Date of Patent: July 18, 2017Assignee: Chevron Phillips Chemical Company LPInventors: Stephen L. Ege, Ralph W. Romig
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Patent number: 9687815Abstract: Disclosed are embodiments of a method of regenerating a desiccant in an off-line treater of a polyolefin production process. The method may include a heating phase followed by a cooling phase. The heating phase may involve use of a regenerating gas made from heating a treated a recycle stream of the polyolefin production process to regenerate desiccant in an off-line treater. The cooling phase may involve thermosyphoning the regenerating gas, nitrogen, an olefin-free diluent, or combinations thereof in a closed-convection loop of the off-line treater.Type: GrantFiled: February 16, 2016Date of Patent: June 27, 2017Assignee: Chevron Phillips Chemical Company LPInventors: Ralph W. Romig, Robert R. McElvain, Steve E. Page
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Patent number: 9624316Abstract: A system and method for a polyolefin reactor temperature control system having a first reactor temperature control path, a second reactor temperature control path, and a shared temperature control path. The shared temperature control path is configured to combine and process coolant return streams, and to provide coolant supply for the first reactor temperature control path and the second reactor temperature control path.Type: GrantFiled: March 31, 2016Date of Patent: April 18, 2017Assignee: CHEVRON PHILLIPS CHEMICAL COMPANY LPInventors: Timothy O. Odi, Anurag Gupta, Ralph W. Romig
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Patent number: 9610558Abstract: 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: December 18, 2015Date of Patent: April 4, 2017Assignee: 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