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Class Information
Number: 203/43
Name: Distillation: processes, separatory > With disparate physical separation > Utilizing liquid-liquid extracting of distillation product
Description: Processes directed to extracting a liquid product of a distillation step with a liquid.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7619126 |
Method for obtaining crude 1,3-butadiene from a C.sub.4 fraction |
Nov. 17, 2009 |
| 7402720 |
Distillation process for removal of methyl acetylene and/or propadiene from an olefin stream |
Jul. 22, 2008 |
| 7241365 |
Material for a facility for the production of anhydrous formic acid |
Jul. 10, 2007 |
| H2194 |
Purification of phenols |
Jul. 3, 2007 |
| 7226527 |
Method for recovering crude 1,3-butadiene by extractive distillation from a C.sub.4 cut |
Jun. 5, 2007 |
| 7074434 |
Process for the separation of a mixture comprising at least one hydrofluoroalkane and hydrogen fluoride, processes for the preparation of a hydrofluoroalkane and azeotropic compositions |
Jul. 11, 2006 |
| 7041199 |
Process and device for hydrolytically obtaining a carboxylic acid alcohol from the corresponding carboxylate |
May. 9, 2006 |
| 6986833 |
Process for fractionating water-containing crude amine mixtures from amine synthesis |
Jan. 17, 2006 |
| 6913674 |
Process for fractionating water-containing crude amine mixtures from amine synthesis |
Jul. 5, 2005 |
| 6838104 |
Process for the production of tocotrienols |
Jan. 4, 2005 |
| 6821396 |
Process for fractionating water-containing crude amine mixtures from amine synthesis |
Nov. 23, 2004 |
| 6706898 |
Methods for separating a tocopherol from a tocopherol-containing mixture |
Mar. 16, 2004 |
| 6679975 |
Process for recovering the methanol contained in a liquid hydrocarbon feed |
Jan. 20, 2004 |
| 6572831 |
Materials treatment |
Jun. 3, 2003 |
| 6494996 |
Process for removing water from aqueous methanol |
Dec. 17, 2002 |
| 6488818 |
Removal of impurities from 3-(2'-acetoxyethyl)-dihydro-2(3H)furanone |
Dec. 3, 2002 |
| 6444096 |
Process for the recovery and purification of cyclobutanone |
Sep. 3, 2002 |
| 6417128 |
Methods and replacing water and cyclohexanone with acetic acid in aqueous solutions of catalyst |
Jul. 9, 2002 |
| 6398917 |
Apparatus for the purification of commercially available diphenyl-p-phenylenediamine (DPPD) |
Jun. 4, 2002 |
| 6375802 |
Method of retrofitting existing equipment for an improved aromatics separation process |
Apr. 23, 2002 |
| 6294055 |
Process for the separation of hydrogen fluoride from its mixtures with a hydrofluoroalkane containing from 3 to 6 carbon atoms |
Sep. 25, 2001 |
| 6224717 |
Methods for separating a tocotrienol from a tocol-containing mixture and compositions thereof |
May. 1, 2001 |
| 6159347 |
Methods for separating a tocol from a tocol-containing mixture |
Dec. 12, 2000 |
| 6113790 |
Process for removing water-soluble organics from waste streams |
Sep. 5, 2000 |
| 6066238 |
Hydrocarbon separation |
May. 23, 2000 |
| 5961787 |
Solvent extraction apparatus |
Oct. 5, 1999 |
| 5858169 |
Process for the simplified separation of multicomponent mixtures of at least partly organic origin |
Jan. 12, 1999 |
| 5846387 |
On-site manufacture of ultra-high-purity hydrochloric acid for semiconductor processing |
Dec. 8, 1998 |
| 5830325 |
Separating and removing 1, 1, 1-trifluoroethane by using azeotropic distillation |
Nov. 3, 1998 |
| 5776319 |
Continuous linear-torroidal extraction method |
Jul. 7, 1998 |
| 5750008 |
Method and device for the extraction treatment of a sample |
May. 12, 1998 |
| 5744010 |
Process for the preparation of the non-toxic salts of 6-methyl-3,4-dihydro-1,2,3-oxathiazin-4-one 2,2-dioxide and arrangement for carrying out this process |
Apr. 28, 1998 |
| 5677193 |
Method and apparatus for processing a test sample to concentrate an analyte in the sample from a solvent in the sample |
Oct. 14, 1997 |
| 5624566 |
Method and apparatus for recovering carboxylic acids from dilute solutions |
Apr. 29, 1997 |
| 5549794 |
Continuous linear-toroidal extraction-distillation apparatus |
Aug. 27, 1996 |
| 5507953 |
Extraction method and apparatus for cleaning contaminated soil |
Apr. 16, 1996 |
| 5492625 |
Method of recovering carboxylic acids from dilute solutions |
Feb. 20, 1996 |
| RE35107 |
Recovery of isopropyl acetate and ethanol from an isopropyl acetate ethanol and water-containing stream |
Dec. 5, 1995 |
| 5264085 |
Method of separating components of phenols mixture by distillation |
Nov. 23, 1993 |
| 5252188 |
Process for producing hydroxyacetaldehyde |
Oct. 12, 1993 |
| 5217582 |
Process for the isolation of alkyl glyoxylate |
Jun. 8, 1993 |
| 5188709 |
Crude oil processing apparatus for heavy oil extraction |
Feb. 23, 1993 |
| 5183538 |
Extraction plus ion exchange processing of a brine stream |
Feb. 2, 1993 |
| 5154801 |
Advances in product separation in DIPE process |
Oct. 13, 1992 |
| 5122236 |
Method for removal of dimethyl ether and methanol from C.sub.4 hydrocarbon streams |
Jun. 16, 1992 |
| 5104492 |
Recovery of carboxylic acids from water by precipitation from organic solutions |
Apr. 14, 1992 |
| 5078974 |
Apparatus for making alkali-metal tetraorganylborates |
Jan. 7, 1992 |
| 5059288 |
Recovery of isopropyl acetate and ethanol from an isopropyl acetate, ethanol and water-containing stream |
Oct. 22, 1991 |
| 5047580 |
Process for the separation of sulfuric acid from aqueous mixtures of paraffin-sulfonic acids |
Sep. 10, 1991 |
| 5013444 |
Process for separating off enol ethers from reaction mixtures containing alcohols |
May. 7, 1991 |
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