Patents Assigned to GREENYUG, LLC
  • Patent number: 9447018
    Abstract: A method of purifying an ethyl acetate stream comprises contacting an inlet stream with a solvent, transferring at least a portion of the impurity compound from the inlet stream into the solvent to form an extract and a purified product, separating the extract from the purified product, separating the portion of the impurity compound from the extract, forming an impurities stream and a regenerated solvent, and recycling at least a portion of the regenerated solvent to contact the inlet stream. The inlet stream comprises ethyl acetate and an impurity compound, and the extract comprises the solvent and the portion of the impurity compound transferred from the inlet stream.
    Type: Grant
    Filed: September 10, 2013
    Date of Patent: September 20, 2016
    Assignee: Greenyug, LLC
    Inventors: Sagar B. Gadewar, Peter K. Stoimenov
  • Patent number: 9079851
    Abstract: A reactive distillation method comprises introducing an feed stream comprising ethanol to a reactive distillation column, contacting the feed stream with a catalyst in the reactive distillation column during a distillation, where the feed stream reacts in the presence of the catalyst to produce a reaction product comprising ethyl acetate and hydrogen, removing ethyl acetate during the distillation from the reactive distillation column as a bottoms stream, and removing hydrogen during the distillation from the reactive distillation column as an overhead stream.
    Type: Grant
    Filed: February 1, 2012
    Date of Patent: July 14, 2015
    Assignee: Greenyug, LLC
    Inventors: Sagar B. Gadewar, Brian Christopher Vicente, Robert Elliot Norton, Michael Francis Doherty
  • Patent number: 9018427
    Abstract: A reactive distillation method comprises introducing a feed stream to a reactive distillation column, contacting the feed stream with one or more catalysts in the reactive distillation column during a distillation, and removing one or more higher alcohols during the distillation from the reactive distillation column as a bottoms stream. The feed stream comprises one or more alpha hydrogen alcohols, and the feed stream reacts in the presence of the one or more catalysts to produce a reaction product comprising the one or more higher alcohols.
    Type: Grant
    Filed: February 18, 2014
    Date of Patent: April 28, 2015
    Assignee: Greenyug, LLC
    Inventors: Sagar B. Gadewar, Brian Christopher Vicente, Peter K. Stoimenov, Vivek Julka
  • Publication number: 20140235901
    Abstract: A reactive distillation method comprises introducing a feed stream to a reactive distillation column, contacting the feed stream with one or more catalysts in the reactive distillation column during a distillation, and removing one or more higher alcohols during the distillation from the reactive distillation column as a bottoms stream. The feed stream comprises one or more alpha hydrogen alcohols, and the feed stream reacts in the presence of the one or more catalysts to produce a reaction product comprising the one or more higher alcohols.
    Type: Application
    Filed: February 18, 2014
    Publication date: August 21, 2014
    Applicant: Greenyug, LLC
    Inventors: Sagar B. GADEWAR, Brian Christopher VICENTE, Peter K. STOIMENOV, Vivek JULKA
  • Patent number: 8562921
    Abstract: A process for the production of high purity ethyl acetate from ethanol is described. The process involves reacting ethanol over a suitable catalyst in a reactive distillation column. The reactive distillation setup allows overcoming the reaction equilibrium for increased conversion of ethanol. Hydrogen is removed as the distillate and ethyl acetate is obtained as a bottoms product from the reactive distillation column. A feed of hydrogen at the bottom of the column and a suitable hydrogenation catalyst placed at the bottom of the column allows for a significant reduction of impurities such as butan-2-one and/or n-butyraldehyde in the ethyl acetate product. Adding side reactors to the reactive distillation column allows additional catalyst holdup for improved reactant conversion.
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: October 22, 2013
    Assignee: Greenyug, LLC.
    Inventor: Sagar B. Gadewar
  • Patent number: 8558025
    Abstract: A process for the production of high purity ethyl acetate from ethanol is described. The process involves reacting ethanol over a suitable catalyst in a reactive distillation column. The reactive distillation setup allows overcoming the reaction equilibrium for increased conversion of ethanol. Hydrogen is removed as the distillate and ethyl acetate is obtained as a bottoms product from the reactive distillation column. A feed of hydrogen at the bottom of the column and a suitable hydrogenation catalyst placed at the bottom of the column allows for a significant reduction of impurities such as butan-2-one, butyraldehyde in the ethyl acetate product. Adding side reactors to the reactive distillation column allows additional catalyst holdup for improved reactant conversion.
    Type: Grant
    Filed: October 20, 2010
    Date of Patent: October 15, 2013
    Assignee: Greenyug, LLC
    Inventor: Sagar B Gadewar
  • Publication number: 20130197266
    Abstract: A reactive distillation method comprises introducing an feed stream comprising ethanol to a reactive distillation column, contacting the feed stream with a catalyst in the reactive distillation column during a distillation, where the feed stream reacts in the presence of the catalyst to produce a reaction product comprising ethyl acetate and hydrogen, removing ethyl acetate during the distillation from the reactive distillation column as a bottoms stream, and removing hydrogen during the distillation from the reactive distillation column as an overhead stream.
    Type: Application
    Filed: February 1, 2012
    Publication date: August 1, 2013
    Applicant: GREENYUG, LLC
    Inventors: Sagar B. GADEWAR, Brian Christopher VICENTE, Robert Elliot NORTON, Michael Francis DOHERTY
  • Publication number: 20120178962
    Abstract: A process for the production of high purity ethyl acetate from ethanol is described. The process involves reacting ethanol over a suitable catalyst in a reactive distillation column. The reactive distillation setup allows overcoming the reaction equilibrium for increased conversion of ethanol. Hydrogen is removed as the distillate and ethyl acetate is obtained as a bottoms product from the reactive distillation column. A feed of hydrogen at the bottom of the column and a suitable hydrogenation catalyst placed at the bottom of the column allows for a significant reduction of impurities such as butan-2-one and/or n-butyraldehyde in the ethyl acetate product. Adding side reactors to the reactive distillation column allows additional catalyst holdup for improved reactant conversion.
    Type: Application
    Filed: March 16, 2012
    Publication date: July 12, 2012
    Applicant: GREENYUG, LLC
    Inventor: Sagar B. GADEWAR