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Class Information
Number: 203/53
Name: Distillation: processes, separatory > Adding material to distilland except water or steam per se > At least two materials > One material is water
Description: Processes in which the additional material comprises water or stream and at least one other substance.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7323579 |
Separation of propylene oxide from a mixture comprising propylene oxide and methanol |
Jan. 29, 2008 |
| 6638987 |
Azeotrope-like compositions of tetrafluoroethane, pentafluoropropane and water |
Oct. 28, 2003 |
| 6551502 |
Process of removing sulfur compounds from gasoline |
Apr. 22, 2003 |
| 6228226 |
Process for working up crude, liquid vinyl acetate |
May. 8, 2001 |
| 5849982 |
Recovery of styrene from pyrolysis gasoline by extractive distillation |
Dec. 15, 1998 |
| 5399244 |
Process to recover benzene from mixed hydrocarbons by extractive distillation |
Mar. 21, 1995 |
| 5262014 |
Process for removing acetone from a mixture of acetone, methyl, acetate and methyl iodide |
Nov. 16, 1993 |
| 5085741 |
Extractive distillation of low boiling alkene/alkane mixtures |
Feb. 4, 1992 |
| 4963232 |
Process for producing a purified hydrazine hydrate |
Oct. 16, 1990 |
| 4961826 |
Distillation process for ethanol |
Oct. 9, 1990 |
| 4955468 |
Separation of hydrocarbon mixtures |
Sep. 11, 1990 |
| 4948470 |
Extractive distillation of alkane/cycloalkane feed employing mixed solvent |
Aug. 14, 1990 |
| 4740273 |
Process for the purification of diethoxymethane from a mixture with ethanol and water |
Apr. 26, 1988 |
| 4652343 |
Process for the separation of mixtures of paraffin or respectively paraffins of 6-14 carbon atoms and alcohol or respectively alcohols of 4-8 |
Mar. 24, 1987 |
| 4532012 |
Production of high purity phenol by distillation with steam and a solvent |
Jul. 30, 1985 |
| 4506091 |
Removal of catalyst residues from polyesters |
Mar. 19, 1985 |
| 4401517 |
Vapor-liquid extractive distillation with dialkyl sulfone/water combination |
Aug. 30, 1983 |
| 4401515 |
Process for producing 1,3-butadiene or 2-methyl-1,3-butadiene having high purity |
Aug. 30, 1983 |
| 4342627 |
Dehydration of alcohols |
Aug. 3, 1982 |
| 4310388 |
Isolation of a conjugated diolefin from a C.sub.4 - or C.sub.5 hydrocarbon |
Jan. 12, 1982 |
| 4304639 |
Process for the purification of olefine oxides |
Dec. 8, 1981 |
| 4293503 |
Synthesis of polyol bis(allyl carbonate) utilizing reagent recovery and recycle |
Oct. 6, 1981 |
| 4278504 |
Isolation of a conjugated diolefin from a C.sub.4 - or C.sub.5 -hydrocarbon mixture |
Jul. 14, 1981 |
| 4277315 |
Isolation of a conjugated diolefin from a C.sub.4 - or C.sub.5 -hydrocarbon mixture |
Jul. 7, 1981 |
| 4269668 |
Extractive distillation of C-4 hydrocarbons using modified alkoxynitrile solvent |
May. 26, 1981 |
| 4268361 |
Inhibiting polymerization in extractive distillation of C-4 hydrocarbons using alkoxynitrile-containing solvent |
May. 19, 1981 |
| 4168209 |
Process for purifying benzene and toluene by extractive azeotropic distillation |
Sep. 18, 1979 |
| 4134795 |
Acetylenes removal from diolefin streams by extractive distillation |
Jan. 16, 1979 |
| 4128457 |
Process for the separation of butadiene by plural stage extractive distillation |
Dec. 5, 1978 |
| 4081332 |
Extractive distillation of C.sub.5 hydrocarbons using acetonitrile and additives |
Mar. 28, 1978 |
| 4061546 |
Purification of acetic acid |
Dec. 6, 1977 |
| 4028195 |
Recovery of alkylene glycols by distillation with aqueous organic acid |
Jun. 7, 1977 |
| 4009084 |
Process for the separation of diolefins from mixtures containing the same |
Feb. 22, 1977 |
| 4008130 |
Method for distilling a ternary azeotrope of fluorosilicic acid, hydrogen fluoride and water |
Feb. 15, 1977 |
| 3998706 |
Process for the separation of chlorohydrocarbons from lower boiling impurities |
Dec. 21, 1976 |
| 3975230 |
Steam distillation of polyvinyl chlorine slurry in presence of metal salt |
Aug. 17, 1976 |
| 3966726 |
Process for the production of cyclic carboxylic acid imides |
Jun. 29, 1976 |
| 3953300 |
Process for separating a high purity vinyl aromatic hydrocarbon from hydrocarbon mixtures containing the same |
Apr. 27, 1976 |
| 3951755 |
Process for preparing technically pure acetic acid by extractive distillation |
Apr. 20, 1976 |
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