Patents by Inventor Soumendra M. Banerjee
Soumendra M. Banerjee 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: 9902912Abstract: A process for hydrotreating coker kerosene is described. Instead of a post treat reactor, a smaller trim reactor zone which operates at a lower pressure than the post treat reactor is used downstream of the product stripper. The trim reactor uses a noble metal catalyst to reduce the BI of the stripped product to less than about 150, and desirably in the range of about 50 to about 100.Type: GrantFiled: January 29, 2014Date of Patent: February 27, 2018Assignee: UOP LLCInventors: Soumendra M. Banerjee, Peter Kokayeff, Vikrant Vilasrao Dalal, Priyesh Jayendrakumar Jani, David Lindsay, Yoga Ayar
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Patent number: 9822317Abstract: The process and apparatus of the present invention selectively hydrogenates a heavier olefinic naphtha stream in an upstream catalyst bed and the hydrogenated effluent and a lighter olefinic naphtha stream in a downstream catalyst bed. The heavier di-alkenes are less re-active and are contacted with more hydrogenation catalyst than the lighter di-alkenes which are more re-active.Type: GrantFiled: October 10, 2014Date of Patent: November 21, 2017Assignee: UOP LLCInventors: Avnish Kumar, Steven F. Zink, Soumendra M. Banerjee
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Patent number: 9816038Abstract: A process is presented for the production of high quality kerosene from lower quality feedstocks, including kerosene produced from coker units, or kerosene from cracking units. The process includes hydrotreating the feedstock to remove contaminants in the feedstock. The hydrotreated process stream is then treated in a trim reactor at higher pressure to reduce the bromine index of the kerosene.Type: GrantFiled: June 12, 2014Date of Patent: November 14, 2017Assignee: UOP LLCInventors: Soumendra M. Banerjee, Peter Kokayeff, David A. Lindsay, Yoga R. Ayar
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Patent number: 9783747Abstract: A process has been developed in which some of the sulfur in a naphtha feed is removed using ionic liquids. The ionic liquid desulfurization step, which operates at low temperatures and pressures, is followed by a catalytic hydrodesulfurizaton step.Type: GrantFiled: June 27, 2013Date of Patent: October 10, 2017Assignee: UOP LLCInventors: Rajeswar R. Gattupalli, Soumendra M. Banerjee, Christopher P. Nicholas, Alakananda Bhatacharyya
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Patent number: 9732014Abstract: A process for producing alkylaromatic compounds is described. The process involves utilizing at least a portion of the aromatic compound used to regenerate the alkylation catalyst in a spent alkylation reaction zone as a reactant in the active alkylation reaction zone.Type: GrantFiled: March 7, 2014Date of Patent: August 15, 2017Assignee: UOP LLCInventors: Stephen W. Sohn, Shuguang Zhang, Priyesh Jayendrakumar Jani, Soumendra M. Banerjee
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Patent number: 9682904Abstract: A process for separating benzene from a reactor effluent in which the reactor effluent is passed to a first separation zone to separate the effluent into a bottom benzene lean stream and an overhead stream. The bottom benzene lean stream does not need to be processed further to remove benzene. The overhead stream may be cooled and is passed to a second separation zone in which it is separated into a bottom benzene rich stream and a second overhead stream. The bottom benzene rich stream contains at least 80% of the benzene from the reactor effluent. The operating temperature of the first separation zone is greater than the operating temperature of the second separation zone.Type: GrantFiled: March 10, 2014Date of Patent: June 20, 2017Assignee: UOP LLCInventors: Priyesh Jayendrakumar Jani, Soumendra M. Banerjee
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Patent number: 9393538Abstract: The process and apparatus of the present invention selectively hydrogenates a heavier olefinic naphtha stream in an upstream catalyst bed and the hydrogenated effluent and a lighter olefinic naphtha stream in a downstream catalyst bed. The heavier di-alkenes are less re-active and are contacted with more hydrogenation catalyst than the lighter di-alkenes which are more re-active.Type: GrantFiled: October 10, 2014Date of Patent: July 19, 2016Assignee: UOP LLCInventors: Avnish Kumar, Steven F. Zink, Soumendra M. Banerjee
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Publication number: 20160102258Abstract: The process and apparatus of the present invention selectively hydrogenates a heavier olefinic naphtha stream in an upstream catalyst bed and the hydrogenated effluent and a lighter olefinic naphtha stream in a downstream catalyst bed. The heavier di-alkenes are less re-active and are contacted with more hydrogenation catalyst than the lighter di-alkenes which are more re-active.Type: ApplicationFiled: October 10, 2014Publication date: April 14, 2016Inventors: Avnish Kumar, Steven F. Zink, Soumendra M. Banerjee
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Publication number: 20160101404Abstract: The process and apparatus of the present invention selectively hydrogenates a heavier olefinic naphtha stream in an upstream catalyst bed and the hydrogenated effluent and a lighter olefinic naphtha stream in a downstream catalyst bed. The heavier di-alkenes are less re-active and are contacted with more hydrogenation catalyst than the lighter di-alkenes which are more re-active.Type: ApplicationFiled: October 10, 2014Publication date: April 14, 2016Inventors: Avnish Kumar, Steven F. Zink, Soumendra M. Banerjee
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Patent number: 9283531Abstract: A hydrotreater reactor device includes a reactor chamber including a first bed and a second bed. A first input is disposed to provide a hydrocarbon stream to the first bed and a second input is disposed to bypass the first bed and provide a hydrocarbon stream to the second bed. A differential temperature controller measures a temperature difference across the first bed. A control valve at the second input adjusts an amount of the hydrocarbon stream admitted through the second input based on the measured temperature difference. A charge heater provides a hydrocarbon stream as an output through a split output line having a first branch connected to the first input and in fluid communication with the first bed, and a second branch connected to the second input and in fluid communication with the second bed. A restrictor downstream of the split controls a pressure drop at the first input.Type: GrantFiled: September 10, 2013Date of Patent: March 15, 2016Assignee: UOP LLCInventors: Soumendra M. Banerjee, Richard K. Hoehn, Srinivasa Gopalan Rajan Varadarajan, Parthasarathy Kothandaraman
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Publication number: 20150361351Abstract: A process and apparatus for increasing vacuum gas oil recovery from a vacuum column are described. The process includes separating a residue crude oil stream from a crude oil separation column in a vacuum column into at least one vacuum gas oil fraction, and a contaminant-rich slop fraction containing at least one contaminant; contacting the contaminant-rich slop fraction with a lean ionic liquid in a contaminant removal zone to produce a mixture comprising a contaminant-lean slop fraction and a rich ionic liquid comprising at least a portion of the at least one contaminant; and separating the mixture to produce a treated slop effluent comprising the contaminant-lean slop fraction and a rich ionic liquid effluent comprising the rich ionic liquid.Type: ApplicationFiled: June 12, 2014Publication date: December 17, 2015Inventors: Soumendra M. Banerjee, Vasant P. Thakkar, Deepak Bisht
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Publication number: 20150361355Abstract: A process is presented for the production of high quality kerosene from lower quality feedstocks, including kerosene produced from coker units, or kerosene from cracking units. The process includes hydrotreating the feedstock to remove contaminants in the feedstock. The hydrotreated process stream is then treated in a trim reactor at higher pressure to reduce the bromine index of the kerosene.Type: ApplicationFiled: June 12, 2014Publication date: December 17, 2015Inventors: Soumendra M. Banerjee, Peter Kokayeff, David A. Lindsay, Yoga R. Ayar
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Publication number: 20150251978Abstract: A process for separating benzene from a reactor effluent in which the reactor effluent is passed to a first separation zone to separate the effluent into a bottom benzene lean stream and an overhead stream. The bottom benzene lean stream does not need to be processed further to remove benzene. The overhead stream may be cooled and is passed to a second separation zone in which it is separated into a bottom benzene rich stream and a second overhead stream. The bottom benzene rich stream contains at least 80% of the benzene from the reactor effluent. The operating temperature of the first separation zone is greater than the operating temperature of the second separation zone.Type: ApplicationFiled: March 10, 2014Publication date: September 10, 2015Applicant: UOP LLCInventors: Priyesh Jayendrakumar Jani, Soumendra M. Banerjee
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Publication number: 20150251974Abstract: A process for producing alkylaromatic compounds is described. The process involves utilizing at least a portion of the aromatic compound used to regenerate the alkylation catalyst in a spent alkylation reaction zone as a reactant in the active alkylation reaction zone.Type: ApplicationFiled: March 7, 2014Publication date: September 10, 2015Applicant: UOP LLCInventors: Stephen W. Sohn, Shuguang Zhang, Priyesh Jayendarkumar Jani, Soumendra M. Banerjee
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Publication number: 20150210939Abstract: A process for hydrotreating coker kerosene is described. Instead of a post treat reactor, a smaller trim reactor zone which operates at a lower pressure than the post treat reactor is used downstream of the product stripper. The trim reactor uses a noble metal catalyst to reduce the BI of the stripped product to less than about 150, and desirably in the range of about 50 to about 100.Type: ApplicationFiled: January 29, 2014Publication date: July 30, 2015Applicant: UOP LLCInventors: Soumendra M. Banerjee, Peter Kokayeff, Vikrant Vilasrao Dalal, Priyesh Jayendrakumar Jani, David Lindsay, Yoga Ayar
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Patent number: 9084945Abstract: A process for recovering hydrogen during hydroprocessing, where the process includes providing a pressure increasing device to a hydroprocessing unit, wherein the pressure increasing device utilizes a high pressure stream from a separator for increasing pressure; introducing a hydrogen containing stream to the pressure increasing device, thereby increasing the pressure of the hydrogen containing stream; and routing the hydrogen containing stream from the pressure increasing device to a vapor-liquid separator. The process also includes separating the hydrogen from the hydrogen containing stream in a hydrogen purification unit to produce a recovered hydrogen stream; and then preferably using the recovered hydrogen stream from the hydrogen purification unit within the hydroprocessing unit.Type: GrantFiled: August 19, 2013Date of Patent: July 21, 2015Assignee: UOP LLCInventors: Richard K. Hoehn, Soumendra M. Banerjee, Kiran Ladkat, Andrew J. Towarnicky, Brent M. Lemberg
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Publication number: 20150075450Abstract: A process for recovering heat from a high pressure stream during hydroprocessing, where one embodiment of the process includes serially introducing a high pressure stream from a hot separator into a first steam generator and a second steam generator; using the first steam generator to generate a medium pressure stream of steam, and then using the medium pressure stream as stripping steam. The process also includes using the second steam generator to generate a low pressure stream of steam, and then using the low pressure stream as stripping steam.Type: ApplicationFiled: September 13, 2013Publication date: March 19, 2015Applicant: UOP LLCInventors: Richard K. Hoehn, Soumendra M. Banerjee, Sudipto Chakraborty
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Publication number: 20150073186Abstract: A hydrotreater reactor device includes a reactor chamber including a first bed and a second bed. A first input is disposed to provide a hydrocarbon stream to the first bed and a second input is disposed to bypass the first bed and provide a hydrocarbon stream to the second bed. A differential temperature controller measures a temperature difference across the first bed. A control valve at the second input adjusts an amount of the hydrocarbon stream admitted through the second input based on the measured temperature difference. A charge heater provides a hydrocarbon stream as an output through a split output line having a first branch connected to the first input and in fluid communication with the first bed, and a second branch connected to the second input and in fluid communication with the second bed. A restrictor downstream of the split controls a pressure drop at the first input.Type: ApplicationFiled: September 10, 2013Publication date: March 12, 2015Applicant: UOP LLCInventors: Soumendra M. Banerjee, Richard K. Hoehn, Srinivasa Gopalan Rajan Varadarajan, Parthasarathy Kothandaraman
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Publication number: 20150047503Abstract: A process for recovering hydrogen during hydroprocessing, where the process includes providing a pressure increasing device to a hydroprocessing unit, wherein the pressure increasing device utilizes a high pressure stream from a separator for increasing pressure; introducing a hydrogen containing stream to the pressure increasing device, thereby increasing the pressure of the hydrogen containing stream; and routing the hydrogen containing stream from the pressure increasing device to a vapor-liquid separator. The process also includes separating the hydrogen from the hydrogen containing stream in a hydrogen purification unit to produce a recovered hydrogen stream; and then preferably using the recovered hydrogen stream from the hydrogen purification unit within the hydroprocessing unit.Type: ApplicationFiled: August 19, 2013Publication date: February 19, 2015Applicant: UOP LLCInventors: Richard K. Hoehn, Soumendra M. Banerjee, Kiran Ladkat, Andrew J. Towarnicky, Brent M. Lemberg
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Publication number: 20150001135Abstract: A process has been developed in which some of the sulfur in a naphtha feed is removed using ionic liquids. The ionic liquid desulfurization step, which operates at low temperatures and pressures, is followed by a catalytic hydrodesulfurizaton step.Type: ApplicationFiled: June 27, 2013Publication date: January 1, 2015Inventors: Rajeswar R. Gattupalli, Soumendra M. Banerjee, Christopher P. Nicholas, Alakananda Bhatacharyya