Patents by Inventor Alakananda Bhattacharyya

Alakananda Bhattacharyya 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).

  • PROCESS FOR OXIDIZING IMPURITIES IN CRUDE TEREPHTHALIC ACID
    Publication number: 20140107375
    Abstract: A process for oxidizing solid crude terephthalic acid is described. The process includes contacting solid crude terephthalic acid with a solvent comprising a carboxylic acid and one or more of an ionic liquid or ammonium acetate; a bromine source; a catalyst; and an oxidizing agent to produce solid purified terephthalic acid at a temperature of about 100 to about 210° C., and a pressure of about 2 to about 4.5 MPa, for a time of about 5 to about 60 min, and recovering the solid purified terephthalic acid.
    Type: Application
    Filed: October 12, 2012
    Publication date: April 17, 2014
    Applicant: UOP LLC
    Inventors: Alakananda Bhattacharyya, Nina Kuznetsova, Bair S. Bal'zhinimaev
  • Mixed metal oxide catalysts and catalytic conversions of lower alkane hydrocarbons
    Patent number: 8697596
    Abstract: Catalytic compositions and processes are disclosed for economical conversions of lower alkane hydrocarbons. Broadly, the present invention discloses solid compositions containing mixed metal oxides that exhibit catalytic activity for ammoxidation of lower alkane hydrocarbons to produce an unsaturated nitrile in high yield. Generally, these solid oxide compositions comprise, as component elements, molybdenum (Mo), vanadium (V) niobium (Nb) and at least one active element selected from the group consisting of the elements having the ability to form positive ions. Mixed metal oxide catalytic compositions advantageously comprise one or more crystalline phases at least one of which phases has pre-determined unit cell volume and aspect ratio. Also described are methods for forming the improved catalysts having the desired crystalline structure and ammoxidation processes for conversion of lower alkanes.
    Type: Grant
    Filed: April 3, 2007
    Date of Patent: April 15, 2014
    Assignee: INEOS USA LLC
    Inventors: James A. Kaduk, James F. Brazdil, Alakananda Bhattacharyya, Christos Paparizos
  • Process for producing terephthalic acid
    Patent number: 8697905
    Abstract: Methods of producing terephthalic acid are described. The methods involve using a p-xylene stream enriched with p-toluic acid. The p-xylene stream enriched with p-toluic acid, a solvent comprising an ionic liquid and optionally a carboxylic acid, a bromine source, a catalyst, and an oxidizing agent are contacted to produce a product comprising terephthalic acid.
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: April 15, 2014
    Assignee: UOP LLC
    Inventors: Alakananda Bhattacharyya, Joel T. Walenga
  • PROCESS FOR PRODUCING TEREPHTHALIC ACID
    Publication number: 20140100386
    Abstract: Methods of producing terephthalic acid are described. The methods involve using a p-xylene stream enriched with p-toluic acid and optionally terephthalic acid at impurity levels. The p-xylene stream enriched with p-toluic acid, a solvent comprising an ionic liquid and optionally a carboxylic acid, a bromine source, a catalyst, and an oxidizing agent are contacted to produce a product comprising terephthalic acid.
    Type: Application
    Filed: December 12, 2013
    Publication date: April 10, 2014
    Applicant: UOP LLC
    Inventor: Alakananda Bhattacharyya
  • PROCESS FOR OLIGOMERIZING DILUTE ETHYLENE
    Publication number: 20140024870
    Abstract: The process and apparatus converts ethylene in a dilute ethylene stream that may be derived from an FCC product to heavier hydrocarbons. The catalyst may be an amorphous silica-alumina base with a Group VIII and/or VIB metal. The catalyst is resistant to feed impurities such as hydrogen sulfide, carbon oxides, hydrogen and ammonia. At least 40 wt-% of the ethylene in the dilute ethylene stream can be converted to heavier hydrocarbons.
    Type: Application
    Filed: September 26, 2013
    Publication date: January 23, 2014
    Applicant: UOP LLC
    Inventors: Christopher P. Nicholas, Alakananda Bhattacharyya, David E. Mackowiak
  • DECONTAMINATION OF DEOXYGENATED BIOMASS-DERIVED PYROLYSIS OIL USING IONIC LIQUIDS
    Publication number: 20140005451
    Abstract: Embodiments of methods for purifying a biomass-derived pyrolysis oil are provided. The method comprises the step of contacting the biomass-derived pyrolysis oil with a first deoxygenating catalyst in the presence of hydrogen at first predetermined hydroprocessing conditions to form a first low-oxygen biomass-derived pyrolysis oil effluent. The low-oxygen biomass-derived pyrolysis oil effluent is contacted with an ionic liquid to remove phenolic compounds, nitrogen compounds and other impurities. This ionic liquid step may be followed by a second deoxygenation step or the deoxygenating may be completed and then followed by the ionic liquid purification step.
    Type: Application
    Filed: October 2, 2012
    Publication date: January 2, 2014
    Applicant: UOP LLC
    Inventors: Beckay J. Mezza, Haiyan Wang, Alakananda Bhattacharyya, Christopher P. Nicholas
  • HYDROCARBON CONVERSION PROCESS TO REMOVE METALS
    Publication number: 20140001092
    Abstract: The invention involves a process for hydrocarbon conversion. The process can include providing a feed to a primary upgrading zone and then treating the product from the primary upgrading zone with a feed-immiscible ionic liquid to remove metal compounds.
    Type: Application
    Filed: February 6, 2013
    Publication date: January 2, 2014
    Applicant: UOP LLC
    Inventors: Beckay J. Mezza, Haiyan Wang, Christopher P. Nicholas, Alakananda Bhattacharyya, Brenna E. Huovie, Rajeswar R. Gattupalli
  • PROCESS FOR REMOVING SULFUR COMPOUNDS FROM VACUUM GAS OIL
    Publication number: 20140001088
    Abstract: A process for removing a nitrogen compound and a sulfur compound from a hydroprocessed vacuum gas oil feed includes contacting the hydroprocessed vacuum gas oil feed comprising the nitrogen compound and the sulfur compound with a VGO-immiscible phosphonium ionic liquid to produce a hydroprocessed vacuum gas oil and VGO-immiscible phosphonium ionic liquid mixture, and separating the mixture to produce a hydroprocessed vacuum gas oil effluent having a reduced nitrogen compound and sulfur compound content relative to the vacuum gas oil feed. It was found that the amount of the sulfur compound being removed was significantly improved by first removing the nitrogen compounds, especially polar nitrogen compounds.
    Type: Application
    Filed: March 12, 2013
    Publication date: January 2, 2014
    Applicant: UOP LLC
    Inventors: Beckay J. Mezza, Alakananda Bhattacharyya, Christopher P. Nicholas, Haiyan Wang
  • PROCESS FOR REMOVING SULFUR COMPOUNDS FROM VACUUM GAS OIL
    Publication number: 20140001099
    Abstract: A process for removing a sulfur compound from a low nitrogen content vacuum gas oil feed includes contacting the low nitrogen content vacuum gas oil feed comprising the sulfur compound with a VGO-immiscible phosphonium ionic liquid to produce a vacuum gas oil and VGO-immiscible phosphonium ionic liquid mixture, and separating the mixture to produce a vacuum gas oil effluent having a reduced sulfur compound content relative to the vacuum gas oil feed. It was found that the amount of the sulfur compound being removed was significantly improved by treating a low nitrogen content vacuum gas oil. The low nitrogen content and especially a low level of polar nitrogen compounds increases the amount of sulfur compounds that can be removed.
    Type: Application
    Filed: May 22, 2013
    Publication date: January 2, 2014
    Applicant: UOP LLC
    Inventors: Beckay J. Mezza, Alakananda Bhattacharyya, Christopher P. Nicholas, Haiyan Wang
  • HYDROCARBON CONVERSION PROCESS TO REMOVE CARBON RESIDUE CONTAMINANTS
    Publication number: 20140001094
    Abstract: The invention involves a process for hydrocarbon conversion. The process can include providing a feed to a primary upgrading zone and then treating the product from the primary upgrading zone with a feed-immiscible ionic liquid to remove carbon residue compounds.
    Type: Application
    Filed: February 6, 2013
    Publication date: January 2, 2014
    Applicant: UOP LLC
    Inventors: Beckay J. Mezza, Haiyan Wang, Christopher P. Nicholas, Alakananda Bhattacharyya, Brenna E. Huovie, Rajeswar R. Gattupalli
  • HYDROCARBON CONVERSION PROCESS
    Publication number: 20140001091
    Abstract: The invention involves a process for hydrocarbon conversion. The process can include providing a feed to a primary upgrading zone and then treating the product from the primary upgrading zone with a feed-immiscible ionic liquid to remove nitrogen compounds.
    Type: Application
    Filed: February 6, 2013
    Publication date: January 2, 2014
    Applicant: UOP LLC
    Inventors: Beckay J. Mezza, Haiyan Wang, Christopher P. Nicholas, Alakananda Bhattacharyya, Brenna E. Huovie, Rajeswar R. Gattupalli
  • HYDROCARBON CONVERSION PROCESS
    Publication number: 20140001093
    Abstract: The invention involves a process for hydrocarbon conversion. The process can include providing a feed to a primary upgrading zone and then treating the product from the primary upgrading zone with a feed-immiscible ionic liquid to remove sulfur compounds.
    Type: Application
    Filed: February 6, 2013
    Publication date: January 2, 2014
    Applicant: UOP LLC
    Inventors: Beckay J. Mezza, Haiyan Wang, Christopher P. Nicholas, Alakananda Bhattacharyya, Brenna E. Huovie, Rajeswar R. Gattupalli
  • Process for using supported molybdenum catalyst for slurry hydrocracking
    Patent number: 8617386
    Abstract: A process is disclosed for converting heavy hydrocarbon feed into lighter hydrocarbon products. The heavy hydrocarbon feed is slurried with a catalyst comprising molybdenum supported on a base, such as boehmite or pseudo-boehmite alumina. Iron oxide may also be in the base. The base is preferably bauxite. The heavy hydrocarbon slurry is hydrocracked in the presence of the catalyst to produce lighter hydrocarbons.
    Type: Grant
    Filed: June 10, 2010
    Date of Patent: December 31, 2013
    Assignee: UOP LLC
    Inventors: Alakananda Bhattacharyya, Beckay J. Mezza, Maureen L. Bricker, Lorenz J. Bauer
  • Alkylation Process Using Phosphonium-Based Ionic Liquids
    Publication number: 20130345483
    Abstract: A process for making an alkylate is presented. The process includes mixing an isoparaffin stream with an olefin stream in an alkylation reactor. The alkylation reactor includes a catalyst for performing the reaction. The catalyst is an ionic liquid that is a quaternary phosphonium based ionic liquid, and the reaction is performed at or near ambient temperatures.
    Type: Application
    Filed: March 12, 2013
    Publication date: December 26, 2013
    Applicant: UOP LLC
    Inventors: Susie C. Martins, Douglas A. Nafis, Alakananda Bhattacharyya
  • Alkylation Process Using Phosphonium-Based Ionic Liquids
    Publication number: 20130345484
    Abstract: A process for making an alkylate is presented. The process includes mixing an isoparaffin stream with an olefin stream in an alkylation reactor. The alkylation reactor includes a catalyst for performing the reaction. The catalyst is an ionic liquid that is a quaternary chloroaluminate based ionic liquid, and the reaction is performed at or near ambient temperatures.
    Type: Application
    Filed: March 12, 2013
    Publication date: December 26, 2013
    Applicant: UOP LLC
    Inventors: Susie C. Martins, Douglas A. Nafis, Alakananda Bhattacharyya
  • Alkylation Process Using Phosphonium-Based Ionic Liquids
    Publication number: 20130345482
    Abstract: A process for making an alkylate is presented. The process includes mixing an isoparaffin stream with an olefin stream in an alkylation reactor. The alkylation reactor includes a catalyst for performing the reaction. The catalyst is an ionic liquid that is a quaternary phosphonium based ionic liquid, and the reaction is performed at or near ambient temperatures.
    Type: Application
    Filed: March 12, 2013
    Publication date: December 26, 2013
    Applicant: UOP LLC
    Inventors: Susie C. Martins, Douglas A. Nafis, Alakananda Bhattacharyya
  • Process for using supported molybdenum catalyst for slurry hydrocracking
    Patent number: 8608945
    Abstract: A process is disclosed for converting heavy hydrocarbon feed into lighter hydrocarbon products. The heavy hydrocarbon feed is slurried with a catalyst comprising molybdenum supported on a base, such as boehmite or pseudo-boehmite alumina. Iron oxide may also be in the base. The base is preferably bauxite. The heavy hydrocarbon slurry is hydrocracked in the presence of the catalyst to produce lighter hydrocarbons.
    Type: Grant
    Filed: June 10, 2010
    Date of Patent: December 17, 2013
    Assignee: UOP LLC
    Inventors: Alakananda Bhattacharyya, Beckay J. Mezza, Maureen L. Bricker, Lorenz J. Bauer
  • Process for de-acidifying hydrocarbons
    Patent number: 8608952
    Abstract: A process for de-acidifying a hydrocarbon feed includes contacting the hydrocarbon feed containing an organic acid with a feed-immiscible phosphonium ionic liquid to produce a hydrocarbon and feed-immiscible phosphonium ionic liquid mixture and separating the mixture to produce a hydrocarbon effluent having a reduced organic acid content relative to the hydrocarbon feed. Optionally, a de-emulsifier is added to at least one of the contacting and separating steps.
    Type: Grant
    Filed: November 12, 2010
    Date of Patent: December 17, 2013
    Assignee: UOP LLC
    Inventors: Manuela Serban, Alakananda Bhattacharyya, Beckay J. Mezza, Kurt M. Vanden Bussche, Christopher P. Nicholas, Warren K. Bennion
  • Process for removing metals from vacuum gas oil
    Patent number: 8608949
    Abstract: A process for removing a metal from a vacuum gas oil feed includes contacting the vacuum gas oil feed comprising the metal with a VGO-immiscible ionic liquid to produce a vacuum gas oil and VGO-immiscible ionic liquid mixture, and separating the mixture to produce a vacuum gas oil effluent having a reduced metal content relative to the vacuum gas oil feed.
    Type: Grant
    Filed: November 12, 2010
    Date of Patent: December 17, 2013
    Assignee: UOP LLC
    Inventors: Alakananda Bhattacharyya, Manuela Serban, Beckay J. Mezza, Kurt M. Vanden Bussche, Christopher P. Nicholas, Joseph A. Kocal, Warren K. Bennion
  • Process for removing nitrogen from vacuum gas oil
    Patent number: 8608943
    Abstract: A process for removing a nitrogen compound from a vacuum gas oil feed includes contacting the vacuum gas oil feed comprising the nitrogen compound with a VGO-immiscible phosphonium ionic liquid to produce a vacuum gas oil and VGO-immiscible phosphonium ionic liquid mixture, and separating the mixture to produce a vacuum gas oil effluent having a reduced nitrogen content relative to the vacuum gas oil feed.
    Type: Grant
    Filed: November 12, 2010
    Date of Patent: December 17, 2013
    Assignee: UOP LLC
    Inventors: Manuela Serban, Alakananda Bhattacharyya, Beckay J. Mezza, Kurt M. Vanden Bussche, Christopher P. Nicholas, Joseph A. Kocal, Warren K. Bennion