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Hans E Grethlein, Lee H Lynd: Distillation process for ethanol. Trustees of Dartmouth College, Hamilton Brook Smith & Reynolds, October 9, 1990: US04961826 (101 worldwide citation)

A method of distillation employing a heat pump (which may be driven by a compressor) using a vapor stream from within the distillation system as a heat source and a liquid stream from within the distillation system as a heat sink. The selection of heat-source vapors and heat-sink liquid is such that ...


62
Lawrence A Smith Jr: Catalytic distillation process. Chemical Research & Licensing Company, Kenneth H Johnson, December 22, 1981: US04307254 (98 worldwide citation)

A method for conducting chemical reactions and fractionation of the reaction mixture comprising feeding reactants to a distillation column reactor into a feed zone and concurrently contacting the reactants with a fixed bed catalytic packing to concurrently carry out the reaction and fractionate the ...


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Julio H Krasuk, Fernando J Silva, Roberto E Galiasso, Alfredo Souto: Process for hydroconversion and upgrading of heavy crudes of high metal and asphaltene content. Intevep, Bachman & LaPointe, May 27, 1986: US04591426 (97 worldwide citation)

A process for upgrading feedstocks containing not less than about 200 ppm metals, an API gravity of less than about 20.degree., a Conradson Carbon of more than about 8%, by hydroconversion with hydrogen in the presence of a naturally occurring inorganic material as a catalyst. The invention further ...


65
Richard P deFilippi, J Edward Vivian: Apparatus for separating organic liquid solutes from their solvent mixtures. Critical Fluid Systems, Schiller & Pandiscio, March 1, 1983: US04375387 (96 worldwide citation)

Process and apparatus for extracting an organic liquid from an organic liquid solute/solvent mixture. The mixture is contacted with a fluid extractant which is at a temperature and pressure to render the extractant a solvent for the solute but not for the solvent. The resulting fluid extract of the ...


66
Arthur S Holmes, James M Ryan: Distillative separations of gas mixtures containing methane, carbon dioxide and other components. Koch Process Systems, Richard P Crowley, July 31, 1984: US04462814 (96 worldwide citation)

Distillative separations of hydrocarbon feed mixtures containing at least methane and carbon dioxide, as well as other components, such as ethane, higher hydrocarbons, and hydrogen sulfide are disclosed. In the separations described, methane is preferably separated from an acid gas under conditions ...


67
Patrick Eduard van Acker, Olivier Mathieu, Russell James Milner, Witold Franciszek Pacynko: Ester co-production. BP Chemicals, Nixon & Vanderhye, July 25, 2000: US06093845 (95 worldwide citation)

This invention relates to a process for the simultaneous co-production of ethyl acetate and n-butyl acetate. The process involves reacting a reaction mixture of ethanol, n-butanol and acetic acid in the liquid phase, in the presence of an acidic catalyst. The process is carried out in a series of re ...


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Stephan RĂ¼diger Blum, Bernhard Kaiser: Distillation method. 2S Sophisticated Systems, Buss SMS Canzler, Cohen Pontani Lieberman & Pavane, June 29, 2010: US07744727 (94 worldwide citation)

A method for distilling ethanol from a mash includes feeding a fluid to a first distillation column. The fluid and a distillate of the first distillation column are delivered to a second distillation column. The fed fluid and/or distillate of the second distillation column is/are purified in a first ...


69
R Jay Warner, Carl David Murphy, Gustavo Angel Robelo Grajales, Francisco Javier Sanchez Santiago, Fernando Alejo Solorzano, Jose Alfonso Torres: Process for the simultaneous coproduction and purification of ethyl acetate and isopropyl acetate. Celanese International Corporation, M Susan Spiering, July 20, 2004: US06765110 (93 worldwide citation)

This invention relates to a process for the simultaneous coproduction of ethyl acetate and isopropyl acetate. The esterification reaction comprises contacting acetic acid with a mixed alcohol stream of ethanol and isopropanol. Exemplified is a purified, Fischer Tropsch derived mixture of ethanol and ...


70
Izak Nieuwoudt, Braam Van Dyk: Separation of ethanol mixtures by extractive distillation. Larson & Taylor, April 23, 2002: US06375807 (92 worldwide citation)

A method of separating ethanol and ethyl acetate, and ethanol and water involves distilling a mixture of the components by an extractive distillation process in the presence of an extractive distillation solvent. The extractive distillation solvent may be an amine, an alkylated thiopene, and paraffi ...



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