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).

  • FLEXIBLE GASOLINE PROCESS USING MULTIPLE FEEDSTOCKS
    Publication number: 20150299584
    Abstract: A flexible process for gasoline refineries is described. The process can vary depending on the available feedstock and the desired products. At one time, the process can involve disproportionating pentanes to a product mixture including isobutane and isohexane. At other times, by switching the feedstock and operating conditions, the process can convert a mixture of C4 and C7 paraffins to a low aromatic blendstock with suitable octane and a vapor pressure lower than butanes. The process can be performed in separate stand-alone units operated at different times, or a single unit can be operated according to one process at one time and according to the other process at another time.
    Type: Application
    Filed: April 21, 2014
    Publication date: October 22, 2015
    Applicant: UOP LLC
    Inventors: Tom N. Kalnes, Stuart Smith, Mary Wier, Alakananda Bhattacharyya, Hayim Abrevaya
  • Process for oxidizing alkyl-aromatic compounds
    Patent number: 9156765
    Abstract: A process for oxidizing an alkyl-aromatic compound is described. The process includes contacting the alkyl-aromatic compound, a solvent comprising a precursor of at least one ionic liquid, a bromine source, a catalyst, and an oxidizing agent to produce an oxidation product comprising at least one of an aromatic alcohol, an aromatic aldehyde, an aromatic ketone, and an aromatic carboxylic acid.
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: October 13, 2015
    Assignee: UOP LLC
    Inventor: Alakananda Bhattacharyya
  • Alkylation process using phosphonium-based ionic liquids
    Patent number: 9156028
    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: Grant
    Filed: March 12, 2013
    Date of Patent: October 13, 2015
    Assignee: UOP LLC
    Inventors: Susie C. Martins, Douglas A. Nafis, Alakananda Bhattacharyya
  • Alkylation process using phosphonium-based ionic liquids
    Patent number: 9156747
    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: Grant
    Filed: March 12, 2013
    Date of Patent: October 13, 2015
    Assignee: UOP LLC
    Inventors: Susie C. Martins, Douglas A. Nafis, Alakananda Bhattacharyya
  • Process for producing terephthalic acid
    Patent number: 9150484
    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: Grant
    Filed: December 12, 2013
    Date of Patent: October 6, 2015
    Assignee: UOP LLC
    Inventor: Alakananda Bhattacharyya
  • Process for controlling reaction and crystallization solvent composition in process for production of aromatic carboxylic acid
    Patent number: 9150485
    Abstract: Processes have been developed for oxidizing alkyl aromatic compounds, and which reduce the amount of 4-CBA in the solid oxidation products. The process can reduce the makeup amount of ionic liquid, carboxylic acid, catalyst, bromine source, and ammonia source.
    Type: Grant
    Filed: October 8, 2013
    Date of Patent: October 6, 2015
    Assignee: UOP LLC
    Inventors: Avram M. Buchbinder, Raymond Shih, Alakananda Bhattacharyya, Evan B. Jorgenson, Tatsamai Jarusiripipat, Nina Kuznetsova
  • Hydrocarbon conversion process
    Patent number: 9133404
    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: Grant
    Filed: February 6, 2013
    Date of Patent: September 15, 2015
    Assignee: UOP LLC
    Inventors: Beckay J. Mezza, Haiyan Wang, Christopher P. Nicholas, Alakananda Bhattacharyya, Brenna E. Huovie, Rajeswar R. Gattupalli
  • Hydrocarbon conversion process to remove carbon residue contaminants
    Patent number: 9133400
    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: Grant
    Filed: February 6, 2013
    Date of Patent: September 15, 2015
    Assignee: UOP LLC
    Inventors: Beckay J. Mezza, Haiyan Wang, Christopher P. Nicholas, Alakananda Bhattacharyya, Brenna E. Huovie, Rajeswar R. Gattupalli
  • Hydrocarbon conversion process to remove metals
    Patent number: 9133403
    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: Grant
    Filed: February 6, 2013
    Date of Patent: September 15, 2015
    Assignee: UOP LLC
    Inventors: Beckay J. Mezza, Haiyan Wang, Christopher P. Nicholas, Alakananda Bhattacharyya, Brenna E. Huovie, Rajeswar R. Gattupalli
  • Hydrocarbon conversion process
    Patent number: 9133402
    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: Grant
    Filed: February 6, 2013
    Date of Patent: September 15, 2015
    Assignee: UOP LLC
    Inventors: Beckay J. Mezza, Haiyan Wang, Christopher P. Nicholas, Alakananda Bhattacharyya, Brenna E. Huovie, Rajeswar R. Gattupalli
  • Catalytic isomerization of pentane using ionic liquids
    Patent number: 9126881
    Abstract: Processes for the disproportionation and isomerization of a C5 hydrocarbon feed using a liquid catalyst comprising an ionic liquid and a halocarbon carbocation promoter are described. The ionic liquid is unsupported, and the reactions occur at temperatures below about 200° C.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: September 8, 2015
    Assignee: UOP LLC
    Inventors: Stuart Smith, Alakananda Bhattacharyya, Dana K. Sullivan
  • CATALYST CAPABLE OF FORMING 2,5-DIMETHYLHEXENES
    Publication number: 20150246940
    Abstract: A process of making a catalyst and the catalyst composition made by that process comprising a multinuclear metal compound of the formula Ma(PCy3)b(H)c(CO)d(OR)e(H2O)f with molar ratios a:b:c:d:e:f, wherein a is in the range from 2 to 2000, b is in the range from 0 to 4000, c is in the range from 0 to 6000 and d is in the range from 0 to 2000, e is in the range from 1 to 2000, and f is in the range from 0 to 100; wherein PCy3 indicates tricyclohexylphosphine, H indicates hydride, R is an alkyl group determined by the alcohol utilized and H2O is water from the reaction; and a is at least twice w. A method of making one or more 2,5-dimethylhexenes is described. A method of making p-xylene using one or more 2,5-dimethylhexenes is also described.
    Type: Application
    Filed: February 28, 2014
    Publication date: September 3, 2015
    Applicant: UOP LLC
    Inventors: Stuart E. Smith, Alakananda Bhattacharyya, Christopher P. Nicholas
  • Regeneration of an acidic catalyst by silane addition
    Patent number: 9120092
    Abstract: A method of regenerating an acidic catalyst is described. A silane compound is contacted with an acidic catalyst that contains conjunct polymer, which releases the conjunct polymer from the acidic catalyst. The acidic catalyst can then be re-activated with acid. The conjunct polymer can be separated from the silane compound, and the silane compound can be recycled.
    Type: Grant
    Filed: May 5, 2014
    Date of Patent: September 1, 2015
    Assignee: UOP LLC
    Inventors: Erin M. Broderick, Alakananda Bhattacharyya, Susie C. Martins, Kaitlin M. DeSalvo, Douglas A. Nafis
  • Catalytic isomerization of paraffins using ionic liquids
    Patent number: 9102578
    Abstract: Processes for the disproportionation and isomerization of a hydrocarbon feed using a liquid catalyst comprising an ionic liquid and a carbocation promoter are described. The ionic liquid is unsupported, and the reactions occur at temperatures below about 200° C.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: August 11, 2015
    Assignee: UOP LLC
    Inventors: Stuart Smith, Alakananda Bhattacharyya
  • Catalytic disproportionation of paraffins using ionic liquids
    Patent number: 9102577
    Abstract: Processes for the disproportionation and isomerization of a hydrocarbon feed using a liquid catalyst comprising an ionic liquid and a carbocation promoter are described. The ionic liquid is unsupported, and the reactions occur at temperatures below about 200° C.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: August 11, 2015
    Assignee: UOP LLC
    Inventors: Stuart Smith, Alakananda Bhattacharyya
  • Catalytic disproportionation of pentane using ionic liquids
    Patent number: 9096481
    Abstract: Processes for the disproportionation and isomerization of a C5 hydrocarbon feed using a liquid catalyst comprising an ionic liquid and a carbocation promoter are described. The ionic liquid is unsupported, and the reactions occur at temperatures below about 200° C.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: August 4, 2015
    Assignee: UOP LLC
    Inventors: Stuart Smith, Alakananda Bhattacharyya
  • Catalytic reverse disproportionation of paraffins using ionic liquids
    Patent number: 9096482
    Abstract: A reverse disproportionation reaction of two hydrocarbon feeds allows production of a reaction mixture containing products with intermediate carbon numbers. The amount of at least one of the products with intermediate carbon numbers is equal to or greater than the amount formed from disproportionation of the hydrocarbon alone. A reverse disproportionation reaction mixture is also described.
    Type: Grant
    Filed: June 12, 2014
    Date of Patent: August 4, 2015
    Assignee: UOP LLC
    Inventors: Stuart Smith, Alakananda Bhattacharyya, Joel T. Walenga, Hayim Abrevaya
  • Catalytic isomerization of heptane using ionic liquids
    Patent number: 9096485
    Abstract: Processes for the disproportionation and isomerization of a C7 hydrocarbon feed using a liquid catalyst comprising an ionic liquid and a carbocation promoter are described. The ionic liquid is unsupported, and the reactions occur at temperatures below about 200° C.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: August 4, 2015
    Assignee: UOP LLC
    Inventors: Stuart Smith, Alakananda Bhattacharyya
  • Catalytic disproportionation of heptane using ionic liquids
    Patent number: 9096480
    Abstract: Processes for the disproportionation and isomerization of a C7 hydrocarbon feed using a liquid catalyst comprising an ionic liquid and a carbocation promoter are described. The ionic liquid is unsupported, and the reactions occur at temperatures below about 200° C.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: August 4, 2015
    Assignee: UOP LLC
    Inventors: Stuart Smith, Alakananda Bhattacharyya
  • Catalytic isomerization of hexanes using ionic liquids
    Patent number: 9096483
    Abstract: Processes for the disproportionation and isomerization of a hydrocarbon feed using a liquid catalyst comprising an ionic liquid and a carbocation promoter are described. The ionic liquid is unsupported, and the reactions occur at temperatures below the decomposition temperature of the ionic liquid, typically below about 250° C. The process includes isomerizing a hydrocarbon feed comprising normal C6 alkane or branched C6 alkane by contacting the hydrocarbon feed with a liquid catalyst in a reaction zone to form a product mixture. Isomerization reaction mixtures are also described.
    Type: Grant
    Filed: June 23, 2014
    Date of Patent: August 4, 2015
    Assignee: UOP LLC
    Inventors: Alakananda Bhattacharyya, Stuart Smith, Dana K. Sullivan, Susie C. Martins