Separation of hydrocarbons by extractive distillation
US6392115B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2000 |
| Grant date | May 21, 2002 |
| Priority date | — |
| Expiry date | Sep 18, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G7/08
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for separating a first hydrocarbon, selected from the group consisting of aromatic hydrocarbons, cycloalkanes, cycloalkenes, cycloalkadienes and combinations thereof, from a close-boiling second hydrocarbon, selected from the group consisting of alkanes, alkenes, and alkadienes and combinations thereof, by extractive distillation of a hydrocarbon-containing fluid containing such hydrocarbons by using a solvent containing a 3-alkyl-substituted-2-oxazolidinone. Such aromatic hydrocarbons contain in the range of from about 6 to about 10 carbon atoms per molecule. Such cycloalkanes, cycloalkenes, cycloalkadienes, and close-boiling second hydrocarbon contain in the range of from about 4 to about 10 carbon atoms per molecule.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.