51
Stephen William Colley, Norman Harris, Colin Rathmell: Process for purification of alkyl alkanoate. Davy Process Technology, Senniger Powers Leavitt & Roedel, October 14, 2003: US06632330 (117 worldwide citation)

A process for the recovery of substantially pure alkyl alkanoate, such as ethyl acetate, from an impure feedstock. The impure feedstock is contacted with a selective hydrogenation catalyst in the presence of hydrogen in a selective hydrogenation zone maintained under selective hydrogenation conditio ...


52
Lawrence A Smith Jr: Catalytic distillation process. Chemical Research & Licensing Company, Kenneth H Johnson, November 4, 1980: US04232177 (113 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 contracting the reactants with a fixed bed catalytic packing to concurrently carry out the reaction and fractionate the ...


53
Lawrence A Smith Jr: Catalytic distillation structure. Chemical Research & Licensing Company, Kenneth H Johnson, April 17, 1984: US04443559 (113 worldwide citation)

Catalytic distillation structure for use in reaction distillation columns, a providing reaction sites and distillation structure and consisting of a catalyst component and a resilient component intimately associated therewith. The resilient component has at least about 70 volume % open space and bei ...


54
John R Messick, William R Ackley, George D Moon Jr: Anhydrous ethanol distillation method and apparatus. Raphael Katzen Associates International, Merriam Marshall & Bicknell, December 27, 1983: US04422903 (110 worldwide citation)

An improved distillation method and apparatus are provided for recovering anhydrous ethanol from fermentation or synthetic feedstocks. The system includes at least one stripper-rectifier tower, a dehydrating tower, and an azeotropic agent stripping tower. Substantial energy savings are realized by o ...


55
Hans E Grethlein, Lee H Lynd: Distillation systems and methods. Trustees of Dartmouth College, Hamilton Brook Smith & Reynolds, December 2, 1986: US04626321 (109 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 ...


56
Jack E Bridges, Harsh Dev, Richard H Snow, Allen Taflove: In situ decontamination of spills and landfills by radio frequency heating. IIT Research Institute, Fitch Even Tabin & Flannery, June 2, 1987: US04670634 (105 worldwide citation)

A water-containing region at or near the surface of the earth, such as a landfill, that is contaminated with hazardous materials is decontaminated by heating the region with bound radio frequency energy from a bound-wave transmission line excitor array disposed outside the region to a temperature to ...


57
Lawrence A Smith Jr: Process for separating isobutene from C.sub.4 streams. Chemical Research & Licensing Company, Kenneth H Johnson, December 30, 1980: US04242530 (105 worldwide citation)

A method for the separation of isobutene from a mixture comprising n-butene and isobutene comprising feeding a C.sub.4 stream containing n-butene and isobutene to a distillation column reactor into a feed zone contacting the stream with fixed bed acidic cation exchange resin to form diisobutene whic ...


58
John M Moses: Liquid CO.sub.2 /cosolvent extraction. CF Systems Corporation, Schiller Pandiscio & Kusmer, October 31, 1989: US04877530 (104 worldwide citation)

Disclosed are a fluid extractant, and a process and apparatus for using the extractant to separate an organic liquid from an aqueous mixture. The extractant comprises a first fluid solvent which is a gas in its near-critical or supercritical state and a cosolvent. A preferred first fluid solvent is ...


59
August Sommer, Rainer Brucker, Wilhelm Heitmann, Norbert Wozny: Distillation process for the production of dehydrated ethanol. Chemische Werke Huls Aktiengesellschaft, Oblon Fisher Spivak McClelland & Maier, September 17, 1985: US04541897 (102 worldwide citation)

A distillation process for the production of dehydrated ethanol from dilute aqueous solutions of ethanol characterized in that the distillation is performed in a two-column system wherein the first column--for rectification--is operated under such a pressure that the second column--for dehydration-- ...


60
Joe D Allison, Harold A Wright, Todd H Harkins, Doug S Jack: Use of catalytic distillation reactor for methanol synthesis. ConocoPhillips Company, Conley Rose P C, April 20, 2004: US06723886 (102 worldwide citation)

An apparatus and method is disclosed for producing alcohols, particularly methanol, according to an alcohol synthesis process. The apparatus comprises a catalytic distillation reactor where reactants are fed into the catalytic distillation reactor to undergo catalytic reaction to form methanol. Meth ...



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