31
Stephen William Colley, Christopher Richard Fawcett, Mohammad Sharif, Michael William Marshall Tuck, David John Watson, Michael Anthony Wood: Process. Davy Process Technology, Senniger Powers, June 30, 2009: US07553397 (149 worldwide citation)

A process is described for the recovery of substantially pure ethyl acetate from a feedstock including ethyl acetate, ethanol and water. The process includes supplying the feedstock to a first distillation zone maintained under first distillation conditions effective for distilling from the feedstoc ...


32
Barkev Keoshkerian, George Liebermann, Cheng Kuo Hsiao, James D Mayo, Dasarao K Murti, Sandra J Gardner: Method of making hydroxygallium phthalocyanine type V photoconductive imaging members. Xerox Corporation, E D Palazzo, January 9, 1996: US05482811 (145 worldwide citation)

A process for the preparation of hydroxygallium phthalocyanines which comprises hydrolyzing a gallium phthalocyanine precursor pigment by dissolving said hydroxygallium phthalocyanine in a strong acid and then reprecipitating the resulting dissolved pigment in basic aqueous media; removing any ionic ...


33
Arien Kwantes, Cornelis W J De Goederen: Process for the preparation of ethanol. Shell Oil Company, Ronald R Reper, Ronald L Clendenen, July 26, 1983: US04395576 (144 worldwide citation)

A process for the preparation of ethanol by catalytic hydration of ethylene in which the crude ethanol is separated by distillation in a first column into a bottom stream consisting of aqueous ethanol and a top stream containing diethyl ether and acetaldehyde, the bottom stream is processed further ...


34
Heinz Houben, Hans U Petzoldt, Joachim Stegemann: Apparatus for producing ethanol. Huftung Fried Krupp Gesellschaft mit beschrankter, Sughrue Mion Zinn Macpeak and Seas, July 7, 1987: US04678543 (143 worldwide citation)

Apparatus is provided for simultaneously producing various forms of alcohol, including ethanol, which can likewise be withdrawn from the apparatus simultaneously. To this end, successive columns in the individual processing stages, each of which includes distillation, rectification, purification and ...


35
Mark O Scates, Steven E Parker, Jennifer B Lacy, Russell K Gibbs: Recovery of acetic acid from dilute aqueous streams formed during a carbonylation process. Hoechst Celanese Corporation, Donald R Cassady, Stuart D Frenkel, February 4, 1997: US05599976 (142 worldwide citation)

A method is provided to improve the quality of recycle of certain residues by modifying the separation of alkanes and alkane-like materials and carbonyl-containing impurities from the recycle during the manufacture of acetic acid by the carbonylation of methanol. The improvement comprises partitioni ...


36

37
Dan W Verser, Timothy J Eggeman: Process for producing ethanol from corn dry milling. Zeachem, Sheridan Ross P C, July 11, 2006: US07074603 (140 worldwide citation)

A process for producing ethanol by the conversion of carbohydrates from a corn dry milling process in which the bottoms fraction from distillation of ethanol in a conventional yeast fermentation is used in a process including a combination of biochemical and synthetic conversions. The process result ...


38
Bradley Michael William, Harris Norman, Turner Keith: Process for the production of ethanol.. Davy Mckee London, April 4, 1984: EP0104197-A1 (140 worldwide citation)

Ethanol is produced by carbonylation of methanol by reaction with carbon monoxide in the presence of a carbonylation catalyst to form acetic acid which is then converted to an acetate ester followed by hydrogenolysis of the acetate ester formed to give ethanol or a mixture of ethanol and another alc ...


39
Raphael Katzen, Vincent B Diebold: Alcohol distillation process. Raphael Katzen Associates International, Hibben Noyes & Bicknell, November 9, 1976: US03990952 (137 worldwide citation)

A crude alcohol-containing mixture comprising a saturated aliphatic alcohol of not more than three carbon atoms and associated impurities is processed in a three-tower distillation system to permit recovery of the desired alcohol product in highly concentrated and purified form. In the first tower t ...


40
Heinz Houben, Hans U Petzoldt, Joachim Stegemann: Process for producing ethanol. Fried Krupp, Sughrue Mion Zinn Macpeak and Seas, September 8, 1987: US04692218 (135 worldwide citation)

Method and apparatus are provided for simultaneously producing various forms of alcohol, including ethanol, which can likewise be withdrawn from the apparatus simultaneously. To this end, successive columns in the individual processing stages, each of which includes distillation, rectification, puri ...



Click the thumbnails below to visualize the patent trend.