Isomerization process comprising fractionation having at least two draw-off levels associated with at least two isomerization zones
US5831140A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 4, 1997 |
| Grant date | Nov 3, 1998 |
| Priority date | — |
| Expiry date | Feb 4, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2400/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention concerns a process for isomerizing a feed containing essentially hydrocarbons, preferably paraffins containing principally 4 to 8, preferably principally 4 to 6 and more preferably principally 5 and/or 6 carbon atoms per molecule, comprising a fractionation zone and at least two isomerization reaction zones, said process comprising carrying out the following steps: PA1 (1) sending the feed to a fractionation zone; PA1 (2) drawing off at least a portion of the liquid circulating in said zone, via at least two draw-off levels; PA1 (3) sending the major portion of the liquid drawn off in step (2) to at least two isomerization zones, each isomerization zone being associated with a draw-off level; PA1 (4) sending the major portion of the effluents from step (3) to the fractionation zone, substantially adjacent to the draw-off levels; PA1 (5) recovering an effluent from the fractionation zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.