Process for isomerizing C.sub.5 /C.sub.6 normal paraffins with recycling normal paraffins and methyl-pentanes
US5602291A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 14, 1994 |
| Grant date | Feb 11, 1997 |
| Priority date | — |
| Expiry date | Jun 14, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G61/06
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention involves a process for the isomerization of C.sub.5 /C.sub.6 n-paraffins into isoparaffins comprising: PA0 a stage (1) of isomerizing a charge constituted by a light naphtha and recycling a flow rich in methyl-pentanes and n-paraffins, PA0 an adsorption stage (2) performed by passing the isomerization effluent onto an adsorbent retaining the n-paraffins and alternating with the adsorpotion stage (2), a desorption stage (3) performed by lowering the pressure and stripping by means of a gas flow rich in methyl-pentanes from the deisohexanization stage (4) and PA0 a deisohexanization stage (4) for the adsorption effluent. The isomerate freed from the n-paraffins in stage (2) and distilled in stage (4) is a high octane number product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.