Patents by Inventor Ram Ganesh Rokkam
Ram Ganesh Rokkam 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: 11708311Abstract: A process for increase conversion and yield and selectivity to normal paraffins by reducing the hydrogen to hydrocarbon ratio for paraffin feeds with substantial butanes. The process works best with a low concentration of heavies and cyclics in the isomerization feed. High normal ratios of equilibrium, isobutane conversion, normal paraffins yield and selectivities are achieved for naphtha feed at low ratios of hydrogen to hydrocarbons.Type: GrantFiled: January 13, 2022Date of Patent: July 25, 2023Assignee: UOP LLCInventors: Ram Ganesh Rokkam, Cora Wang Ploentham, Vaibhav Ramesh Thool
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Publication number: 20230183585Abstract: A feed stream of cyclic paraffins may be separated to obtain an overhead of methylcyclopentane or cyclohexane and a bottoms stream cyclohexane or methylcyclohexane. The overhead stream may be subjected to separation of normal paraffins from non-normal paraffins with the former being isomerized or the entire overhead stream may be isomerized. In a further embodiment, the bottoms stream may be subjected to steam cracking. In an additional embodiment, the feed stream of cyclic paraffins may be formerly subjected to aromatic saturation.Type: ApplicationFiled: September 27, 2022Publication date: June 15, 2023Inventors: Ram Ganesh Rokkam, Amit Jain, Ashish Mathur, Nirlipt Mahapatra, PRASENJIT BASU SARKAR, SOURABH MAITHIL
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Publication number: 20230183152Abstract: A process for increase conversion and yield and selectivity to normal paraffins by reducing the hydrogen to hydrocarbon ratio for paraffin feeds with substantial butanes. The process works best with a low concentration of heavies and cyclics in the isomerization feed. High normal ratios of equilibrium, isobutane conversion, normal paraffins yield and selectivities are achieved for naphtha feed at low ratios of hydrogen to hydrocarbons.Type: ApplicationFiled: January 13, 2022Publication date: June 15, 2023Inventors: Ram Ganesh Rokkam, Cora Wang Ploentham, Vaibhav Ramesh Thool
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Publication number: 20230078452Abstract: A process for increasing conversion and selectivity to normal paraffins is achieved by reducing the hydrogen to hydrocarbon ratio for paraffin feeds with substantial butanes. A separator may be used to remove excess hydrogen from a first isomerate before a second isomerization step that may isomerize additional butanes perhaps generated in the first isomerization step.Type: ApplicationFiled: September 2, 2022Publication date: March 16, 2023Inventors: Ram Ganesh Rokkam, Cora Wang Ploentham, Gregory A. Funk, Priyesh Jayendrakumar Jani
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Patent number: 11597883Abstract: Favorable isomerization conditions for producing normal paraffins can produce olefins. The process for separating normal paraffins from non-normal paraffins by adsorption has a limit on olefin concentration, so the olefins must be removed. We propose to remove olefins from the isomerization effluent stream that is recycled to the adsorption separation process.Type: GrantFiled: June 7, 2021Date of Patent: March 7, 2023Assignee: UOP LLCInventors: Mark Lapinski, Ram Ganesh Rokkam, Gregory Funk
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Publication number: 20230036734Abstract: A process increases the concentration of normal paraffins in a feed stream comprising separating a naphtha feed stream into a normal paraffin rich stream and a non-normal paraffin rich stream. A naphtha feed stream may be separated into a normal paraffin stream and a non-normal paraffin stream. An isomerization feed stream is taken from the non-normal paraffin stream and isomerized over an isomerization catalyst to convert non-normal paraffins to normal paraffins and produce an isomerization effluent stream. The isomerization effluent stream may be separated into a propane stream and a C4+ hydrocarbon stream optionally in a single column. The C4+ hydrocarbon stream may be recycled to the step of separating a naphtha feed stream.Type: ApplicationFiled: July 7, 2022Publication date: February 2, 2023Inventors: Mark Lapinski, Ram Ganesh Rokkam, Cora Wang Ploentham, Gregory Funk
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Publication number: 20220389335Abstract: Favorable isomerization conditions for producing normal paraffins can produce olefins. The process for separating normal paraffins from non-normal paraffins by adsorption has a limit on olefin concentration, so the olefins must be removed. We propose to remove olefins from the isomerization effluent stream that is recycled to the adsorption separation process.Type: ApplicationFiled: June 7, 2021Publication date: December 8, 2022Inventors: Mark Lapinski, Ram Ganesh Rokkam, Gregory Funk
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Patent number: 11040926Abstract: An integrated process for maximizing recovery of aromatics is provided. The process comprises passing at least a portion of a xylene column bottoms stream to a heavy aromatics column to provide a heavy aromatics column bottoms stream comprising C9+ aromatics and a heavy aromatics column overhead stream. The heavy aromatics column bottoms stream is passed to a second stage hydrocracking reactor of a two-stage hydrocracking reactor. In the second stage hydrocracking reactor, the heavy aromatics column bottoms stream is hydrocracked in the presence of a hydrocracking catalyst and hydrogen to provide a hydrocracked effluent stream.Type: GrantFiled: July 22, 2019Date of Patent: June 22, 2021Assignee: UOP LLCInventors: Gautam Pandey, Krishna Mani, Deepak Bisht, Priyesh Jayendrakumar Jani, Vikrant Vilasrao Dalal, Ram Ganesh Rokkam
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Publication number: 20210024434Abstract: An integrated process for maximizing recovery of aromatics is provided. The process comprises passing at least a portion of a xylene column bottoms stream to a heavy aromatics column to provide a heavy aromatics column bottoms stream comprising C9+ aromatics and a heavy aromatics column overhead stream. The heavy aromatics column bottoms stream is passed to a second stage hydrocracking reactor of a two-stage hydrocracking reactor. In the second stage hydrocracking reactor, the heavy aromatics column bottoms stream is hydrocracked in the presence of a hydrocracking catalyst and hydrogen to provide a hydrocracked effluent stream.Type: ApplicationFiled: July 22, 2019Publication date: January 28, 2021Inventors: Gautam Pandey, Krishna Mani, Deepak Bisht, Priyesh Jayendrakumar Jani, Vikrant Vilasrao Dalal, Ram Ganesh Rokkam
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Patent number: 10899976Abstract: An integrated process for maximizing recovery of LPG is provided. The process comprises providing a hydrocarbonaceous feed comprising naphtha, and a hydrogen stream to a reforming zone. The hydrocarbonaceous feed is reformed in the reforming zone in the presence of the hydrogen stream and a reforming catalyst to provide a reformate effluent stream. At least a portion of the reformate effluent stream and at least one stream comprising C6? hydrocarbons from one or more of a hydrocracking zone, an isomerization zone, and a transalkylation zone is passed to a debutanizer column of the reforming zone to provide a fraction comprising liquid petroleum gas (LPG) and a debutanizer column bottoms stream.Type: GrantFiled: March 28, 2019Date of Patent: January 26, 2021Assignee: UOP LLCInventors: Gautam Madhusadan Pandey, Krishna Mani, Deepak Bisht, Priyesh Jayendrakumar Jani, Vikrant Vilasrao Dalal, Ram Ganesh Rokkam
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Patent number: 10899975Abstract: An integrated process for maximizing recovery of hydrogen is provided. The process comprises: providing a hydrocarbonaceous feed comprising naphtha, and a hydrogen stream to a reforming zone, wherein the hydrogen stream is obtained from at least one of a hydrocracking zone, a transalkylation zone, and an isomerization zone. The hydrocarbonaceous feed is reformed in the reforming zone in the presence of the hydrogen stream and a reforming catalyst to provide a reformate effluent stream. At least a portion of the reformate effluent stream is passed to a debutanizer column of the reforming zone to provide a net hydrogen stream and a fraction comprising liquid petroleum gas (LPG). At least a portion of the net hydrogen stream is recycled to the reforming zone as the hydrogen stream.Type: GrantFiled: March 28, 2019Date of Patent: January 26, 2021Assignee: UOP LLCInventors: Gautam Madhusadan Pandey, Krishna Mani, Deepak Bisht, Priyesh Jayendrakumar Jani, Vikrant Vilasrao Dalal, Ram Ganesh Rokkam
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Publication number: 20200308498Abstract: An integrated process for maximizing recovery of LPG is provided. The process comprises providing a hydrocarbonaceous feed comprising naphtha, and a hydrogen stream to a reforming zone. The hydrocarbonaceous feed is reformed in the reforming zone in the presence of the hydrogen stream and a reforming catalyst to provide a reformate effluent stream. At least a portion of the reformate effluent stream and at least one stream comprising C6? hydrocarbons from one or more of a hydrocracking zone, an isomerization zone, and a transalkylation zone is passed to a debutanizer column of the reforming zone to provide a fraction comprising liquid petroleum gas (LPG) and a debutanizer column bottoms stream.Type: ApplicationFiled: March 28, 2019Publication date: October 1, 2020Inventors: Gautam Madhusadan Pandey, Krishna Mani, Deepak Bisht, Priyesh Jayendrakumar Jani, Vikrant Vilasrao Dalal, Ram Ganesh Rokkam
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Publication number: 20200308496Abstract: An integrated process for maximizing recovery of hydrogen is provided. The process comprises: providing a hydrocarbonaceous feed comprising naphtha, and a hydrogen stream to a reforming zone, wherein the hydrogen stream is obtained from at least one of a hydrocracking zone, a transalkylation zone, and an isomerization zone. The hydrocarbonaceous feed is reformed in the reforming zone in the presence of the hydrogen stream and a reforming catalyst to provide a reformate effluent stream. At least a portion of the reformate effluent stream is passed to a debutanizer column of the reforming zone to provide a net hydrogen stream and a fraction comprising liquid petroleum gas (LPG). At least a portion of the net hydrogen stream is recycled to the reforming zone as the hydrogen stream.Type: ApplicationFiled: March 28, 2019Publication date: October 1, 2020Inventors: Gautam Madhusadan Pandey, Krishna Mani, Deepak Bisht, Priyesh Jayendrakumar Jani, Vikrant Vilasrao Dalal, Ram Ganesh Rokkam
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Patent number: 10443001Abstract: A process and apparatus for reducing the sulfur content of naphtha. The process includes introducing at least a portion of a naphtha feed stream to a selective hydrodesulfurization zone under selective hydrodesulfurization conditions in the presence of a selective hydrodesulfurization catalyst to form a low sulfur stream which contains mercaptan and thiophene compounds. At least a portion of the low sulfur stream is separated into at least two streams, a mercaptan rich stream containing mercaptan and thiophene compounds and an overhead stream containing hydrogen sulfide and liquid petroleum gas. The mercaptan rich stream is treated in an adsorbent zone to remove at least a portion of the mercaptan and thiophene compounds to form a mercaptan lean stream.Type: GrantFiled: August 11, 2017Date of Patent: October 15, 2019Assignee: UOP LLCInventors: Priyesh Jayendrakumar Jani, Deepak Bisht, Tuhin Suvra Khan, Ram Ganesh Rokkam, Pijus Kanti Roy, Steven F. Zink, Avnish Kumar
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Publication number: 20180119032Abstract: A process and apparatus for reducing the sulfur content of naphtha. The process includes introducing at least a portion of a naphtha feed stream to a selective hydrodesulfurization zone under selective hydrodesulfurization conditions in the presence of a selective hydrodesulfurization catalyst to form a low sulfur stream which contains mercaptan and thiophene compounds. At least a portion of the low sulfur stream is separated into at least two streams, a mercaptan rich stream containing mercaptan and thiophene compounds and an overhead stream containing hydrogen sulfide and liquid petroleum gas. The mercaptan rich stream is treated in an adsorbent zone to remove at least a portion of the mercaptan and thiophene compounds to form a mercaptan lean stream.Type: ApplicationFiled: August 11, 2017Publication date: May 3, 2018Inventors: Priyesh Jayendrakumar Jani, Deepak Bisht, Tuhin Suvra Khan, Ram Ganesh Rokkam, Pijus Kanti Roy, Steven F. Zink, Avnish Kumar
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Patent number: 9452383Abstract: One exemplary embodiment is a membrane separation element. The membrane separation element can include a membrane and a feed spacer positioned adjacent to the membrane. The feed spacer may include a first layer, a second layer, and a third layer. Usually, a plurality of fibers of the second layer only touches a plurality of fibers of the first and third layers.Type: GrantFiled: April 30, 2014Date of Patent: September 27, 2016Assignee: UOP LLCInventors: Travis C. Bowen, Parag Jain, Ram Ganesh Rokkam
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Publication number: 20150314231Abstract: One exemplary embodiment is a membrane separation element. The membrane separation element can include a membrane and a feed spacer positioned adjacent to the membrane. The feed spacer may include a first layer, a second layer, and a third layer. Usually, a plurality of fibers of the second layer only touches a plurality of fibers of the first and third layers.Type: ApplicationFiled: April 30, 2014Publication date: November 5, 2015Applicant: UOP, LLCInventors: Travis C. Bowen, Parag Jain, Ram Ganesh Rokkam