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).

  • Simultaneous warm gas desulfurization and complete CO-shift for improved syngas cleanup
    Patent number: 8940660
    Abstract: The present invention involves both separated beds (or physical mixture) and a process for treating a fuel gas comprising sending the fuel gas to a separated bed (or physical mixture), in which the separated beds comprise a first bed of a sulfur sorbent and a second bed of a water gas shift catalyst (a physical mixture of a sulfur sorbent and a water gas shift catalyst). The process comprises first sending the fuel gas to the first bed to remove sulfur compounds from said fuel gas and then the fuel gas goes to the second bed to undergo a water gas shift reaction in which carbon monoxide is converted to carbon dioxide and water is converted to hydrogen. (or sending the fuel gas simultaneously to the physical mixture to remove simultaneously the sulfur compounds and to react CO with water to CO2 and hydrogen).
    Type: Grant
    Filed: December 4, 2008
    Date of Patent: January 27, 2015
    Assignee: UOP LLC
    Inventors: Manuela Serban, Kurt M. Vanden Bussche, Alakananda Bhattacharyya
  • Process for producing terephthalic acid
    Patent number: 8933266
    Abstract: A process for producing terephthalic acid from para-xylene. The process comprises forming a mixture comprising the para-xylene, a solvent, a bromine source, a catalyst, and ammonium acetate; and oxidizing the para-xylene by contacting the mixture with an oxidizing agent at oxidizing conditions to produce a solid oxidation product comprising terephthalic acid, para-toluic acid, 4-carboxybenzaldehyde. The solvent comprises a carboxylic acid having from 1 to 7 carbon atoms, and the catalyst comprises at least one of cobalt, titanium, manganese, chromium, copper, nickel, vanadium, iron, molybdenum, tin, cerium, and zirconium.
    Type: Grant
    Filed: June 8, 2011
    Date of Patent: January 13, 2015
    Assignee: UOP LLC
    Inventors: Alakananda Bhattacharyya, Joel T. Walenga
  • Process for oxidizing alkyl aromatic compounds
    Patent number: 8933265
    Abstract: A process and a mixture for oxidizing an alkyl-aromatic compound comprises forming a mixture comprising the alkyl-aromatic compound, a solvent, a bromine source, a catalyst, and ammonium acetate; and contacting the mixture with an oxidizing agent at oxidizing conditions to produce an oxidation product comprising at least one of an aromatic aldehyde, an aromatic alcohol, an aromatic ketone, and an aromatic carboxylic acid. The solvent comprises a carboxylic acid having from 1 to 7 carbon atoms; and the catalyst comprises at least one of cobalt, titanium, manganese, chromium, copper, nickel, vanadium, iron, molybdenum, tin, cerium, and zirconium.
    Type: Grant
    Filed: June 8, 2011
    Date of Patent: January 13, 2015
    Assignee: UOP LLC
    Inventors: Alakananda Bhattacharyya, Joel T. Walenga
  • Process for producing terephthalic acid
    Patent number: 8927764
    Abstract: Methods of producing terephthalic acid are described. The methods involve using a substantially pure 4-CBA stream. The substantially pure 4-CBA stream, 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: January 6, 2015
    Assignee: UOP LLC
    Inventor: Alakananda Bhattacharyya
  • CATALYTIC ISOMERIZATION OF PENTANE USING IONIC LIQUIDS
    Publication number: 20150005542
    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: Application
    Filed: June 28, 2013
    Publication date: January 1, 2015
    Inventors: Stuart Smith, Alakananda Bhattacharyya, Dana K. Sullivan
  • CATALYTIC REVERSE DISPROPORTIONATION OF PARAFFINS USING IONIC LIQUIDS
    Publication number: 20150005556
    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: Application
    Filed: June 12, 2014
    Publication date: January 1, 2015
    Inventors: Stuart Smith, Alakananda Bhattacharyya, Joel T. Walenga, Hayim Abrevaya
  • CATALYTIC DISPROPORTIONATION OF BUTANE USING IONIC LIQUIDS
    Publication number: 20150005555
    Abstract: Processes for the disproportionation and isomerization of a C4 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 300° C.
    Type: Application
    Filed: August 23, 2013
    Publication date: January 1, 2015
    Applicant: UOP LLC
    Inventors: Stuart Smith, Alakananda Bhattacharyya
  • CATALYTIC ISOMERIZATION OF HEPTANE USING IONIC LIQUIDS
    Publication number: 20150005541
    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: Application
    Filed: June 28, 2013
    Publication date: January 1, 2015
    Inventors: Stuart Smith, Alakananda Bhattacharyya
  • METHOD FOR TUNING PRODUCT COMPOSITION BASED ON VARYING TYPES AND RATIOS OF FEED
    Publication number: 20150005560
    Abstract: A process of tuning a hydrocarbon product composition is described. The process involves selecting paraffins for reaction. The equilibrium constants for reactions of the selected paraffins can be used to select appropriate feed ratios, or an equilibrium composition as function of C/H molar ratio. A selected feed is reacted to obtain the product. Equilibrium product compositions and non-equilibrium product compositions can be obtained using the process.
    Type: Application
    Filed: June 12, 2014
    Publication date: January 1, 2015
    Inventors: Stuart Smith, Alakananda Bhattacharyya, Peter K. Coughlin
  • CATALYTIC ISOMERIZATION OF HEXANES USING IONIC LIQUIDS
    Publication number: 20150005546
    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: Application
    Filed: June 23, 2014
    Publication date: January 1, 2015
    Inventors: Alakananda Bhattacharyya, Stuart Smith, Dana K. Sullivan, Susie C. Martin
  • CATALYTIC DISPROPORTIONATION OF PARAFFINS USING IONIC LIQUIDS
    Publication number: 20150005543
    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: Application
    Filed: June 28, 2013
    Publication date: January 1, 2015
    Inventors: Stuart Smith, Alakananda Bhattacharyya
  • CATALYTIC DISPROPORTIONATION OF PENTANE USING IONIC LIQUIDS
    Publication number: 20150005545
    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: Application
    Filed: June 28, 2013
    Publication date: January 1, 2015
    Inventors: Stuart Smith, Alakananda Bhattacharyya
  • CATALYTIC ISOMERIZATION OF BUTANE USING IONIC LIQUIDS
    Publication number: 20150005554
    Abstract: Processes for the disproportionation and isomerization of a C4 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 300° C.
    Type: Application
    Filed: August 23, 2013
    Publication date: January 1, 2015
    Applicant: UOP LLC
    Inventors: Stuart Smith, Alakananda Bhattacharyya
  • CATALYTIC ISOMERIZATION OF PARAFFINS USING IONIC LIQUIDS
    Publication number: 20150005540
    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: Application
    Filed: June 28, 2013
    Publication date: January 1, 2015
    Inventors: Stuart Smith, Alakananda Bhattacharyya
  • CATALYTIC DISPROPORTIONATION OF HEPTANE USING IONIC LIQUIDS
    Publication number: 20150005544
    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: Application
    Filed: June 28, 2013
    Publication date: January 1, 2015
    Inventors: Stuart Smith, Alakananda Bhattacharyya
  • Process for removing metals from tallow oil
    Patent number: 8912351
    Abstract: A process for removing a metal from a tallow feed includes contacting the tallow feed comprising the metal with a tallow oil-immiscible ionic liquid to produce a tallow oil and TALLOW-immiscible ionic liquid mixture, and separating the mixture to produce a tallow oil effluent having a reduced metal content relative to the tallow feed. The metals removed include iron, aluminum, calcium, magnesium, sodium, zinc, and potassium.
    Type: Grant
    Filed: March 6, 2012
    Date of Patent: December 16, 2014
    Assignee: UOP LLC
    Inventors: Beckay J. Mezza, Alakananda Bhattacharyya, F. Stephen Lupton
  • HYDROCARBON CONVERSION PROCESSES USING IONIC LIQUIDS
    Publication number: 20140353208
    Abstract: A method of hydrocarbon conversion is described. The hydrocarbon feed is decontaminated using an ionic liquid and introduced into a conversion zone. The conversion of the decontaminated feed is increased compared to the conversion of the contaminated feed and the yield of the desired product made from the decontaminated hydrocarbon feed is increased compared to the yield of the desired product made from the contaminated hydrocarbon feed.
    Type: Application
    Filed: May 31, 2013
    Publication date: December 4, 2014
    Inventors: Rajeswar R. Gattupalli, Beckay J. Mezza, Alakananda Bhattacharyya, Robert B. James, Massimo Sangalli, Peter Van Opdorp
  • Process for the reduction of gasoline benzene content by alkylation with dilute ethylene
    Patent number: 8895793
    Abstract: The process converts ethylene in a dilute ethylene stream and dilute benzene in an aromatic containing stream via alkylation to heavier hydrocarbons. The catalyst may be a zeolite such as UZM-8. The catalyst is resistant to feed impurities such as hydrogen sulfide, carbon oxides, and hydrogen and selectively converts benzene. At least 40 wt-% of the ethylene in the dilute ethylene stream and at least 20 wt-% of the benzene in the dilute benzene stream can be converted to heavier hydrocarbons.
    Type: Grant
    Filed: June 11, 2010
    Date of Patent: November 25, 2014
    Assignee: UOP LLC
    Inventors: Christopher P. Nicholas, Alakananda Bhattacharyya
  • RECYCLE GAS SCRUBBING USING IONIC LIQUIDS
    Publication number: 20140336428
    Abstract: A method of removing CO2 from a gaseous mixture using ionic liquids is described. The ionic liquids can be regenerated by pressure reductions. A method of processing a renewable feedstock using the ionic liquids to remove CO2 is also described.
    Type: Application
    Filed: May 10, 2013
    Publication date: November 13, 2014
    Applicant: UOP LLC
    Inventors: Soumendra M. Banerjee, Alakananda Bhattacharyya, Erin M. Broderick
  • Anaerobic conversion of 4-carboxybenzaldehyde in ionic liquids
    Patent number: 8884056
    Abstract: A method of decreasing an amount of an aromatic aldehyde in a product is described. The method includes reacting the aromatic aldehyde in the presence of a reaction medium comprising a nucleophilic solvent, or an ionic liquid and a carboxylic acid, the reaction taking place in the absence of a hydrogenating agent and an oxidizing agent, to form aromatic carboxylic acid, an aromatic alcohol, or both.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: November 11, 2014
    Assignee: UOP LLC
    Inventors: Avram M. Buchbinder, Alakananda Bhattacharyya, Joel T. Walenga