Patents by Inventor Debarshi Majumder

Debarshi Majumder 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: 9394215
    Abstract: Processes for making CX to CY olefins are provided. The processes include reacting a feedstock comprising C5 and C6 olefins under dimerization or oligomerization conditions to provide a dimerization or oligomerization product. The product is separated into a stream comprising unreacted C5 and C6 paraffins, a stream comprising C10 to CX-1 olefins, and a stream comprising CX to CY olefins, wherein X is at least 14 and Y is greater than X and less than or equal to 36.
    Type: Grant
    Filed: July 19, 2011
    Date of Patent: July 19, 2016
    Assignee: UOP LLC
    Inventors: Debarshi Majumder, Stephen Wayne Sohn, Bryan K. Glover, Andrea G. Bozzano
  • Publication number: 20150376084
    Abstract: Methods and systems are provided for converting methane in a feed stream to acetylene. The method includes removing at least a portion of carbon dioxide from a hydrocarbon stream. The hydrocarbon stream is introduced into a supersonic reactor and pyrolyzed to convert at least a portion of the methane to acetylene. The reactor effluent stream may be treated to convert acetylene to another hydrocarbon process. The method according to the invention provides certain aspects includes controlling the level of carbon dioxide in the hydrocarbon stream and in a fuel stream that is first sent to a combustion zone and then to the supersonic reactor. The results of removal of carbon dioxide include maintaining the shock location in the supersonic reactor and maintaining the acetylene yield without the production of undesired products such as carbon monoxide.
    Type: Application
    Filed: September 8, 2015
    Publication date: December 31, 2015
  • Publication number: 20150376081
    Abstract: Apparatuses and methods for producing linear alkylbenzene products from renewable oils are provided. An exemplary method includes deoxygenating the renewable oil in a deoxygenation zone to form paraffins. The method fractionates the paraffins to form first and second fractions. The method processes the first fraction of paraffins in a reforming zone to form a reformate stream and recovers a first hydrogen stream from the reforming zone. The method includes forming a LAB stream in a LAB production zone from the second fraction of paraffins and a portion of the reformate stream. Further, the method includes recovering a second hydrogen stream in the LAB production zone and recycling the first hydrogen stream from the reforming zone and the second hydrogen stream from the LAB production zone, wherein substantially all hydrogen recovered from the reforming zone and the LAB production zone is recycled.
    Type: Application
    Filed: June 30, 2014
    Publication date: December 31, 2015
    Inventors: Debarshi Majumder, Geoffrey William Fichtl
  • Patent number: 9193642
    Abstract: A method of making dialkylaromatics as a primary product is described. The design involves a dual reaction zone system, both reaction zones containing alkylation catalysts. The olefin feed is split into two portions (or two feeds are used), the first portion being fed to a first alkylation reaction zone and reacted with a first olefin. The other portion of olefin is reacted in a second reaction zone with the linear alkylaromatics formed in the first reaction zone to form the dialkylaromatics.
    Type: Grant
    Filed: June 20, 2013
    Date of Patent: November 24, 2015
    Assignee: UOP LLC
    Inventors: Debarshi Majumder, Stephen W. Sohn
  • Patent number: 9174891
    Abstract: The process of producing an alkylbenzene compound from the alkylation of an aromatic compound with an acyclic monoolefin is an exothermic process. A process for maintaining a relatively constant temperature improves the process and allows for controlling the yields. The process includes recycling a compound through the reactor that is relatively inert, but will moderate the exotherm, while maintaining the 2-phenyl content of the final alkylbenzene product.
    Type: Grant
    Filed: June 20, 2013
    Date of Patent: November 3, 2015
    Assignee: UOP LLC
    Inventors: Debarshi Majumder, Stephen W. Sohn
  • Patent number: 9163199
    Abstract: A linear alkyl benzene product and production of linear alkylbenzene from a natural oil are provided. A method comprises the step of deoxygenating the natural oils to form a stream comprising paraffins. The paraffins are dehydrogenated to provide mono-olefins. Then, benzene is alkylated with the mono-olefins under alkylation conditions to provide an alkylation effluent comprising alkylbenzenes and benzene. Thereafter, the alkylbenzenes are isolated to provide the alkylbenzene product.
    Type: Grant
    Filed: June 17, 2015
    Date of Patent: October 20, 2015
    Assignee: UOP LLC
    Inventors: Stanley J. Frey, Daniel L. Ellig, Andrea G. Bozzano, Geoffrey W. Fichtl, Debarshi Majumder
  • Publication number: 20150284662
    Abstract: A linear alkyl benzene product and production of linear alkylbenzene from a natural oil are provided. A method comprises the step of deoxygenating the natural oils to form a stream comprising paraffins. The paraffins are dehydrogenated to provide mono-olefins. Then, benzene is alkylated with the mono-olefins under alkylation conditions to provide an alkylation effluent comprising alkylbenzenes and benzene. Thereafter, the alkylbenzenes are isolated to provide the alkylbenzene product.
    Type: Application
    Filed: June 17, 2015
    Publication date: October 8, 2015
    Inventors: Stanley J. Frey, Daniel L. Ellig, Andrea G. Bozzano, Geoffrey W. Fichtl, Debarshi Majumder
  • Patent number: 9126883
    Abstract: A method of making alkylaromatics is described. The process includes recycling a portion of the alkylation reaction zone effluent back to the alkylation zone to maintain the product quality while reducing energy usage.
    Type: Grant
    Filed: June 20, 2013
    Date of Patent: September 8, 2015
    Assignee: UOP LLC
    Inventor: Debarshi Majumder
  • Patent number: 9080134
    Abstract: The production of linear alkylbenzene from a natural oil is provided. A method comprises the step of deoxygenating the natural oils to form a stream comprising paraffins. The paraffins are dehydrogenated to provide mono-olefins. Then, benzene is alkylated with the mono-olefins under alkylation conditions to provide an alkylation effluent comprising alkylbenzenes and benzene. Thereafter, the alkylbenzenes are isolated to provide the alkylbenzene product.
    Type: Grant
    Filed: June 6, 2014
    Date of Patent: July 14, 2015
    Assignee: UOP LLC
    Inventors: Stanley J. Frey, Daniel L. Ellig, Andrea G. Bozzano, Geoffrey W. Fichtl, Debarshi Majumder
  • Patent number: 9079814
    Abstract: A linear alkyl benzene product and production of linear alkylbenzene from a natural oil are provided. A method comprises the step of deoxygenating the natural oils to form a stream comprising paraffins. The paraffins are dehydrogenated to provide mono-olefins. Then, benzene is alkylated with the mono-olefins under alkylation conditions to provide an alkylation effluent comprising alkylbenzenes and benzene. Thereafter, the alkylbenzenes are isolated to provide the alkylbenzene product.
    Type: Grant
    Filed: June 6, 2014
    Date of Patent: July 14, 2015
    Assignee: UOP LLC
    Inventors: Stanley J. Frey, Daniel L. Ellig, Andrea G. Bozzano, Geoffrey W. Fichtl, Debarshi Majumder
  • Patent number: 9079811
    Abstract: A linear alkyl benzene product and production of linear alkylbenzene from a natural oil are provided. A method comprises the step of deoxygenating the natural oils to form a stream comprising paraffins. The paraffins are dehydrogenated to provide mono-olefins. Then, benzene is alkylated with the mono-olefins under alkylation conditions to provide an alkylation effluent comprising alkylbenzenes and benzene. Thereafter, the alkylbenzenes are isolated to provide the alkylbenzene product.
    Type: Grant
    Filed: June 6, 2014
    Date of Patent: July 14, 2015
    Assignee: UOP LLC
    Inventors: Stanley J. Frey, Daniel L. Ellig, Andrea G. Bozzano, Geoffrey W. Fichtl, Debarshi Majumder
  • Publication number: 20150165412
    Abstract: Apparatus and methods are provided for converting methane in a feed stream to acetylene. A hydrocarbon stream is introduced into a supersonic reactor and pyrolyzed to convert at least a portion of the methane to acetylene. The reactor effluent stream may be treated to convert acetylene to another hydrocarbon process. An acid washing system is employed to wash the reactor effluent to remove any copper acetylide byproducts that may be present in the reactor effluent, or alternatively to decompose any copper acetylide byproducts that may remain in the reactor after shutdown of the reactor.
    Type: Application
    Filed: December 12, 2013
    Publication date: June 18, 2015
    Applicant: UOP LLC
    Inventors: Debarshi Majumder, Laura E. Leonard
  • Publication number: 20150148561
    Abstract: A linear alkyl benzene product and production of linear alkylbenzene from a natural oil are provided. A method comprises the step of deoxygenating the natural oils to form a stream comprising paraffins. The paraffins are dehydrogenated to provide mono-olefins. Then, benzene is alkylated with the mono-olefins under alkylation conditions to provide an alkylation effluent comprising alkylbenzenes and benzene. Thereafter, the alkylbenzenes are isolated to provide the alkylbenzene product.
    Type: Application
    Filed: June 6, 2014
    Publication date: May 28, 2015
    Inventors: Stanley J. Frey, Daniel L. Ellig, Andrea G. Bozzano, Geoffrey W. Fichtl, Debarshi Majumder
  • Patent number: 9023255
    Abstract: Methods and systems are provided for converting methane in a feed stream to acetylene. The hydrocarbon stream is introduced into a supersonic reactor and pyrolyzed to convert at least a portion of the methane to acetylene. The reactor effluent stream may be treated to convert acetylene to nitrogen based hydrocarbon compounds such as pyridines. The method includes the reaction of acetylene with ammonia and controlling the ratio of acetylene to ammonia to generate the desired nitrogen based hydrocarbon compound.
    Type: Grant
    Filed: June 11, 2013
    Date of Patent: May 5, 2015
    Assignee: UOP LLC
    Inventors: Jeffery C. Bricker, John Q. Chen, Peter K. Coughlin, Debarshi Majumder
  • Publication number: 20150073176
    Abstract: A linear alkylbenzene product and a linear alkylbenzene sulfonate product from a natural oil are provided. The linear alkylbenzene product comprises alkylbenzenes having the formula C6H5CnH2n+1 wherein n is from 12 to 13; wherein the alkylbenzenes have at least 7 mass % modern carbon as measured by ASTM Method 6866; and wherein the alkyl group is a linear alkyl group for at least 80 mass % of the alkylbenzenes having the formula C6H5CnH2n+1 wherein n is from 12 to 13.
    Type: Application
    Filed: June 6, 2014
    Publication date: March 12, 2015
    Inventors: Stanley J. Frey, Daniel L. Ellig, Andrea G. Bozzano, Geoffrey W. Fichtl, Debarshi Majumder
  • Publication number: 20150072916
    Abstract: The production of linear alkylbenzene from a natural oil is provided. A method comprises the step of deoxygenating the natural oils to form a stream comprising paraffins. The paraffins are dehydrogenated to provide mono-olefins. Then, benzene is alkylated with the mono-olefins under alkylation conditions to provide an alkylation effluent comprising alkylbenzenes and benzene. Thereafter, the alkylbenzenes are isolated to provide the alkylbenzene product.
    Type: Application
    Filed: June 6, 2014
    Publication date: March 12, 2015
    Applicant: UOP LLC
    Inventors: Stanley J. Frey, Daniel L. Ellig, Andrea G. Bozzano, Geoffrey W. Fichtl, Debarshi Majumder
  • Patent number: 8937186
    Abstract: Methods and systems are provided for converting methane in a feed stream to acetylene. The method includes removing at least a portion of acids from a hydrocarbon stream. The hydrocarbon stream is introduced into a supersonic reactor and pyrolyzed to convert at least a portion of the methane to acetylene. The reactor effluent stream may be treated to convert acetylene to another hydrocarbon process. The method according to certain aspects includes controlling the level of acids in the hydrocarbon stream by use of adsorbents or basic solutions.
    Type: Grant
    Filed: July 25, 2013
    Date of Patent: January 20, 2015
  • Publication number: 20140378700
    Abstract: A liquid phase dehydrogenation process is described. The process includes reacting a liquid feed stream containing C10 to C28 paraffins and dissolved hydrogen in a dehydrogenation reaction zone in the presence of a dehydrogenation catalyst under liquid dehydrogenation conditions to dehydrogenate the paraffins to form a liquid dehydrogenation product stream comprising monoolefins, unreacted paraffins, and hydrogen, wherein the monoolefins in the product stream have 10 to 28 carbon atoms.
    Type: Application
    Filed: June 17, 2014
    Publication date: December 25, 2014
    Inventors: Debarshi Majumder, Stephen W. Sohn
  • Publication number: 20140378723
    Abstract: A method of making dialkylaromatics as a primary product is described. The design involves a dual reaction zone system, both reaction zones containing alkylation catalysts. The olefin feed is split into two portions (or two feeds are used), the first portion being fed to a first alkylation reaction zone and reacted with a first olefin. The other portion of olefin is reacted in a second reaction zone with the linear alkylaromatics formed in the first reaction zone to form the dialkylaromatics.
    Type: Application
    Filed: June 20, 2013
    Publication date: December 25, 2014
    Inventors: DEBARSHI MAJUMDER, STEPHEN W. SOHN
  • Publication number: 20140378724
    Abstract: A method of making alkylaromatics is described. The process includes recycling a portion of the alkylation reaction zone effluent back to the alkylation zone to maintain the product quality while reducing energy usage.
    Type: Application
    Filed: June 20, 2013
    Publication date: December 25, 2014
    Inventor: Debarshi Majumder