Patents by Inventor Andrew Shuff

Andrew Shuff 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: 20150133701
    Abstract: A process is disclosed for integrating a steam methane reformer to produce hydrogen that is used for converting acetic acid and/or ethyl acetate to ethanol. The process may use a methane-containing stream obtained from a stranded natural gas or associated gas source. The process water from the hydrogenation reaction is used to saturate the methane-containing stream. The process water comprises water and oxygenates, wherein the maximum amount of oxygenates is less than or equal to 10 wt. %. Processes for integrating fuel sources, steam and electricity are also disclosed.
    Type: Application
    Filed: November 8, 2013
    Publication date: May 14, 2015
    Applicant: Celanese International Corporation
    Inventors: David Townsend, Andrew Shuff
  • Patent number: 9029614
    Abstract: Disclosed herein are processes for alcohol production by reducing ethyl acetate produced by hydrogenating acetic acid in the presence of a suitable catalyst. The product of the acetic acid hydrogenation is fed directly to a decanter to separate the hydrogenation product into an aqueous phase comprising water and ethanol and an organic phase comprising ethyl acetate. The organic phase is reduced with hydrogen in the presence of a catalyst to obtain a crude reaction mixture comprising the alcohol, in particular ethanol, which may be separated from the crude reaction mixture. Thus, ethanol may be produced from acetic acid through an ethyl acetate intermediate without an esterification step. This may reduce the recycle of ethanol in the hydrogenolysis process and improve ethanol productivity.
    Type: Grant
    Filed: November 20, 2012
    Date of Patent: May 12, 2015
    Assignee: Celanese International Corporation
    Inventors: Emily Duff, R. Jay Warner, Heiko Weiner, Radmila Wollrab, Zhenhua Zhou, James Zink, Andrew Shuff
  • Patent number: 9018426
    Abstract: In one embodiment, the invention is to a process for producing multi-carbon alcohols, including butanol and/or hexanol. The process comprises the step of reacting ethanol in a reactor to form a crude product comprising butanol, ethanol, and water. The process further comprises the step of separating at least a portion of the crude product in a first distillation zone to form a first distillate comprising ethanol and a first residue comprising butanol, and water. The process further comprises the step of separating at least a portion of the first residue in a second distillation zone to form a second distillate and a second residue comprising butanol.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: April 28, 2015
    Assignee: Celanese International Corporation
    Inventors: Claudio Ribeiro, Andrew Shuff, Tianshu Pan
  • Patent number: 8853469
    Abstract: Recovery of ethanol from a crude product comprising ethyl acetate obtained from the hydrogenation of acetic acid. The crude product is separated to form an organic stream that may be subjected to hydrogenolysis to form ethanol. The organic phase may comprise ethyl acetate is reacted via hydrogenolysis form ethanol that may be directly or indirectly fed to the separation zone or the hydrogenation reactor.
    Type: Grant
    Filed: November 20, 2012
    Date of Patent: October 7, 2014
    Assignee: Celanese International Corporation
    Inventors: Victor J. Johnston, David Lee, Mark O. Scates, R. Jay Warner, Heiko Weiner, Radmila Wollrab, Zhenhua Zhou, Emily Duff, Andrew Shuff
  • Publication number: 20140142351
    Abstract: Recovery of ethanol from a crude product comprising ethyl acetate obtained from the hydrogenation of acetic acid. The crude product is separated to form an organic stream that may be subjected to hydrogenolysis to form ethanol. The organic phase may comprise ethyl acetate is reacted via hydrogenolysis form ethanol that may be directly or indirectly fed to the separation zone or the hydrogenation reactor.
    Type: Application
    Filed: November 20, 2012
    Publication date: May 22, 2014
    Applicant: CELANESE INTERNATIONAL CORPORATION
    Inventors: Victor J. Johnston, David Lee, Mark O. Scates, R. Jay Warner, Heiko Weiner, Radmila Wollrab, Zhenhua Zhou, Emily Duff, Andrew Shuff
  • Publication number: 20140142349
    Abstract: The present invention relates to a process for producing ethanol by methyl acetate hydrogenolysis. The process comprises the step of reacting carbon monoxide and methanol in a reaction medium to form a reaction solution that comprises acetic acid and from 0.5 to 25 wt. % methyl acetate. The process further comprises the step of esterifying the acetic acid and feeding the methyl acetate to a distillation column to remove alkyl halides. The process further comprises the steps of reacting the methyl acetate stream that does not contain alkyl halides and hydrogen in the presence of a second catalyst to form an alcohol product that comprises ethanol and/or methanol.
    Type: Application
    Filed: November 20, 2012
    Publication date: May 22, 2014
    Applicant: CELANESE INTERNATIONAL CORPORATION
    Inventors: Andrew Shuff, G. Paull Torrence, Brian Hokkanen, Tianshu Pan, Mark O. Scates, Ronald D. Shaver
  • Patent number: 8729318
    Abstract: The present invention relates to a process for producing ethanol by methyl acetate hydrogenolysis. The process comprises the step of reacting carbon monoxide and methanol in a reaction medium to form a reaction solution that comprises acetic acid and from 0.5 to 25 wt. % methyl acetate. The process further comprises the step of esterifying the acetic acid and feeding the methyl acetate to a distillation column to remove alkyl halides. The process further comprises the steps of reacting the methyl acetate stream that does not contain alkyl halides and hydrogen in the presence of a second catalyst to form an alcohol product that comprises ethanol and/or methanol.
    Type: Grant
    Filed: November 20, 2012
    Date of Patent: May 20, 2014
    Assignee: Celanese International Corporation
    Inventors: Andrew Shuff, G. Paull Torrence, Brian Hokkanen, Tianshu Pan, Mark O. Scates, Ronald D. Shaver