Patents Assigned to GREENYUG, LLC
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Patent number: 9447018Abstract: 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: GrantFiled: September 10, 2013Date of Patent: September 20, 2016Assignee: Greenyug, LLCInventors: Sagar B. Gadewar, Peter K. Stoimenov
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Patent number: 9079851Abstract: 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: GrantFiled: February 1, 2012Date of Patent: July 14, 2015Assignee: Greenyug, LLCInventors: Sagar B. Gadewar, Brian Christopher Vicente, Robert Elliot Norton, Michael Francis Doherty
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Patent number: 9018427Abstract: 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: GrantFiled: February 18, 2014Date of Patent: April 28, 2015Assignee: Greenyug, LLCInventors: Sagar B. Gadewar, Brian Christopher Vicente, Peter K. Stoimenov, Vivek Julka
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Publication number: 20140235901Abstract: 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: ApplicationFiled: February 18, 2014Publication date: August 21, 2014Applicant: Greenyug, LLCInventors: Sagar B. GADEWAR, Brian Christopher VICENTE, Peter K. STOIMENOV, Vivek JULKA
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Patent number: 8562921Abstract: 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: GrantFiled: March 16, 2012Date of Patent: October 22, 2013Assignee: Greenyug, LLC.Inventor: Sagar B. Gadewar
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Patent number: 8558025Abstract: 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: GrantFiled: October 20, 2010Date of Patent: October 15, 2013Assignee: Greenyug, LLCInventor: Sagar B Gadewar
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Publication number: 20130197266Abstract: 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: ApplicationFiled: February 1, 2012Publication date: August 1, 2013Applicant: GREENYUG, LLCInventors: Sagar B. GADEWAR, Brian Christopher VICENTE, Robert Elliot NORTON, Michael Francis DOHERTY
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Publication number: 20120178962Abstract: 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: ApplicationFiled: March 16, 2012Publication date: July 12, 2012Applicant: GREENYUG, LLCInventor: Sagar B. GADEWAR