Patents by Inventor Krishna Mani

Krishna Mani 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).

  • Publication number: 20200308496
    Abstract: 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: Application
    Filed: March 28, 2019
    Publication date: October 1, 2020
    Inventors: Gautam Madhusadan Pandey, Krishna Mani, Deepak Bisht, Priyesh Jayendrakumar Jani, Vikrant Vilasrao Dalal, Ram Ganesh Rokkam
  • Publication number: 20200308498
    Abstract: 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: Application
    Filed: March 28, 2019
    Publication date: October 1, 2020
    Inventors: Gautam Madhusadan Pandey, Krishna Mani, Deepak Bisht, Priyesh Jayendrakumar Jani, Vikrant Vilasrao Dalal, Ram Ganesh Rokkam
  • Publication number: 20200102510
    Abstract: Processes and apparatus for maximizing production of heavy naphtha from a hydrocarbon stream are provided. The process comprises providing a hydrocarbon feed stream comprising vacuum gas oil to a first hydrocracking reactor. The hydrocarbon feed stream is hydrocracked at first hydrocracking conditions comprising a first hydrocracking pressure to provide a first hydrocracked effluent stream therein. At least a portion of the first hydrocracked effluent stream is fractionated in a fractionation column to provide a heavy naphtha fraction. A kerosene stream is hydrocracked in a second hydrocracking reactor operating at second hydrocracking conditions comprising a second hydrocracking pressure to provide a second hydrocracked effluent stream. In an aspect, the first hydrocracking pressure can be greater than the second hydrocracking pressure by at least about 6895 kPa (g).
    Type: Application
    Filed: September 29, 2018
    Publication date: April 2, 2020
    Inventors: Krishna Mani, Deepak Bisht, Krishan Pratap Jadaun, Nikhil Gupta, Arunim Bose, Soumendra Mohan Banerjee, Rajaraman Panchapakesan
  • Patent number: 10519388
    Abstract: The present invention discloses a process and apparatus for selectively hydrogenating diolefins in a cracked stream. The method combines a conversion unit and a recovery section. The recovery section includes the diolefin hydrogenation reactor that is used to selectively hydrogenate the diolefins in the cracked naphtha. The diolefin depleted naphtha may be debutanized to separate the stabilized naphtha and liquefied petroleum gas streams.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: December 31, 2019
    Assignee: UOP LLC
    Inventors: Steven F. Zink, Krishna Mani, Krishan Pratap Jadaun, Soumendra Mohan Banerjee
  • Publication number: 20190161692
    Abstract: Methods and apparatuses are disclosed for upgrading a hydrocarbon feedstream comprising passing the hydrocarbon feedstream to a first hydroprocessing reactor in a reaction vessel to produce a first hydroprocessed effluent stream. The first hydroprocessed effluent stream is separated in a hot separator to produce a vapor stream and a liquid hydrocarbon stream. At least a portion of the liquid hydrocarbon stream is passed to a second hydroprocessing reactor disposed in the reaction vessel above the first hydroprocessing reactor, to produce a second hydroprocessed effluent stream. A liquid product stream is separated from the second hydroprocessing effluent stream. The vapor stream from the hot separator is mixed with the liquid product stream to provide a combined stream.
    Type: Application
    Filed: November 28, 2017
    Publication date: May 30, 2019
    Inventors: Krishna Mani, Deepak Bisht, Steven F. Zink
  • Publication number: 20190108454
    Abstract: This disclosure provides an apparatus and method for harnessing machine learning and data analytics for a real-time predictive model for a FCC pre-treatment unit. The method includes collecting operating parameters of a pre-treatment unit and fluid catalytic cracking (FCC) unit; evaluating an independent variable of the operating parameters; and adjusting an input to the pre-treatment unit to control the independent variable within specifications in an output of the FCC unit.
    Type: Application
    Filed: October 3, 2018
    Publication date: April 11, 2019
    Inventors: Soumendra Mohan Banerjee, Deepak Bisht, Krishna Mani, Priyesh Jayendrakumar Jani, Gautam Pandey
  • Patent number: 10240099
    Abstract: Processes for the production of transportation fuel from a renewable feedstock. A catalyst is used which is more selective to hydrodeoxygenate the fatty acid side chains compared to decarboxylation and decarbonylation reactions. A gaseous mixture of carbon monoxide and hydrogen can be supplied to the conversion zone. Water may also be introduced into the conversion zone to increase the amount of hydrogen.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: March 26, 2019
    Assignee: UOP LLC
    Inventors: Krishna Mani, Kanchan Dutta, Avnish Kumar, Anjan Ray
  • Publication number: 20180155640
    Abstract: A process for reducing the sulfur content of FCC naphtha is described. The process includes introducing a FCC naphtha feed to a selective hydrogenation zone to form a hydrogenated feed. The hydrogenated feed is separated into light fraction and a heavy fraction. The heavy fraction is introduced into a selective hydrodesulfurization zone to form a desulfurized stream which contains mercaptans. The desulfurized stream is separated into a mercaptan rich stream and a mercaptan lean stream. The mercaptan rich stream is treated with a caustic extraction process, a hydrodesulfurization reaction zone, a selective hydrogenation process, an adsorption process, or an ionic liquid extraction process to remove at least a portion of the mercaptan compounds to form a second mercaptan lean stream.
    Type: Application
    Filed: January 31, 2018
    Publication date: June 7, 2018
    Inventors: Vikrant Vilasrao Dalal, Krishna Mani, Krishan Pratap Jadaun, Steven F. Zink
  • Patent number: 9982198
    Abstract: Processes for pyrolyzing biomass. A catalyst is used to both pyrolyze and deoxygenate the biomass within the pyrolysis zone. A source of carbon monoxide is also passed to the pyrolysis reactor. The source of carbon monoxide may comprise a stream of gas that includes carbon monoxide, or a material capable of generating or being converted in carbon monoxide within the pyrolysis zone. The carbon monoxide may be used as a reactant for a water gas shift reaction or as a reducing agent to remove oxygen from oxygenated hydrocarbons. The catalyst preferably comprises iron (III) oxide.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: May 29, 2018
    Assignee: UOP LLC
    Inventors: Kanchan Dutta, Anjan Ray, Krishna Mani, Avnish Kumar
  • Publication number: 20180119036
    Abstract: Processes for the production of transportation fuel from a renewable feedstock. A catalyst is used which is more selective to hydrodeoxygenate the fatty acid side chains compared to decarboxylation and decarbonylation reactions. A gaseous mixture of carbon monoxide and hydrogen can be supplied to the conversion zone. Water may also be introduced into the conversion zone to increase the amount of hydrogen.
    Type: Application
    Filed: September 12, 2017
    Publication date: May 3, 2018
    Inventors: Krishna Mani, Kanchan Dutta, Avnish Kumar, Anjan Ray
  • Patent number: 9914883
    Abstract: Processes for the production of transportation fuel from a renewable feedstock. A gaseous mixture of carbon monoxide and hydrogen is used to deoxygenate and hydrogenate the glycerides to produce long chain hydrocarbons. The hydrocarbons may be isomerized to improve cold flow properties to provide a diesel fuel. Prior to isomerization, the long chain hydrocarbons can be separated or the separation can be after isomerization. Recycle gas streams from the isomerization and the deoxygenation and hydrogenation reactions may be used to supply at least a portion of the gaseous mixture of carbon monoxide and hydrogen. Synthesis gas may also be used to supply at least a portion of the gaseous mixture of carbon monoxide and hydrogen.
    Type: Grant
    Filed: April 2, 2015
    Date of Patent: March 13, 2018
    Assignee: UOP LLC
    Inventors: Kanchan Dutta, Avnish Kumar, Krishna Mani, Anjan Ray
  • Publication number: 20180044600
    Abstract: The present invention discloses a process and apparatus for selectively hydrogenating diolefins in a cracked stream. The method combines a conversion unit and a recovery section. The recovery section includes the diolefin hydrogenation reactor that is used to selectively hydrogenate the diolefins in the cracked naphtha. The diolefin depleted naphtha may be debutanized to separate the stabilized naphtha and liquefied petroleum gas streams.
    Type: Application
    Filed: October 30, 2017
    Publication date: February 15, 2018
    Inventors: Steven F. Zink, Krishna Mani, Krishan Pratap Jadaun, Soumendra Mohan Banerjee
  • Publication number: 20170096605
    Abstract: Processes for pyrolyzing biomass. A catalyst is used to both pyrolyze and deoxygenate the biomass within the pyrolysis zone. A source of carbon monoxide is also passed to the pyrolysis reactor. The source of carbon monoxide may comprise a stream of gas that includes carbon monoxide, or a material capable of generating or being converted in carbon monoxide within the pyrolysis zone. The carbon monoxide may be used as a reactant for a water gas shift reaction or as a reducing agent to remove oxygen from oxygenated hydrocarbons. The catalyst preferably comprises iron (III) oxide.
    Type: Application
    Filed: September 30, 2016
    Publication date: April 6, 2017
    Inventors: Kanchan Dutta, Anjan Ray, Krishna Mani, Avnish Kumar
  • Publication number: 20170037322
    Abstract: Processes for the production of transportation fuel from a renewable feedstock. A gaseous mixture of carbon monoxide and hydrogen is used to deoxygenate and hydrogenate the glycerides to produce long chain hydrocarbons. Water is also introduced into the reaction zone to increase the amount of hydrogen and to increase the utilization of carbon monoxide within the reaction zone. Synthesis gas may also be used to supply at least a portion of the gaseous mixture of carbon monoxide and hydrogen. The amount of hydrogen equivalents in the reaction zone is at least 100% of a stoichiometric hydrogen demand within the reaction zone.
    Type: Application
    Filed: August 2, 2016
    Publication date: February 9, 2017
    Inventors: Kanchan Dutta, Paul T. Barger, David E. Mackowiak, Anjan Ray, Krishna Mani, Avnish Kumar
  • Publication number: 20160289568
    Abstract: Processes for the production of transportation fuel from a renewable feedstock. A gaseous mixture of carbon monoxide and hydrogen is used to deoxygenate and hydrogenate the glycerides to produce long chain hydrocarbons. The hydrocarbons may be isomerized to improve cold flow properties to provide a diesel fuel. Prior to isomerization, the long chain hydrocarbons can be separated or the separation can be after isomerization. Recycle gas streams from the isomerization and the deoxygenation and hydrogenation reactions may be used to supply at least a portion of the gaseous mixture of carbon monoxide and hydrogen. Synthesis gas may also be used to supply at least a portion of the gaseous mixture of carbon monoxide and hydrogen.
    Type: Application
    Filed: April 2, 2015
    Publication date: October 6, 2016
    Inventors: Kanchan Dutta, Avnish Kumar, Krishna Mani, Anjan Ray