Process for producing dehydrated alcohols for use as component of a motor fuel composition
US4366032A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 1, 1981 |
| Grant date | Dec 28, 1982 |
| Priority date | — |
| Expiry date | Sep 1, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S203/14
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Process for dehydrating aliphatic alcohols admixed with water wherein the alcohols-water mixture is subjected to a first fractionation in the presence of a selective solvent, giving a vapor effluent containing dehydrated light alcohols and a liquid phase containing heavy alcohols, water and the selective solvent, said liquid phase being subjected to a second fractionation giving as vapor effluent an hetero-azeotropic mixture of water and heavy alcohols and, as liquid effluent, the selective solvent, which is fed back, said hetero-azeotropic mixture being condensed and separated into: PA1 (a) a light phase of high alcohol content which is subjected to a third fractionation giving a vapor effluent which is fed back and dehydrated heavy alcohols as liquid effluent, and PA0 (b) a heavy phase which is subjected to a fourth fractionation giving a vapor effluent which is fed back and water as liquid effluent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.