Aromatic hydrocarbon separation process
Patent
·
OSTI ID:6817756
A solvent extraction process for separating polar hydrocarbons. The solvent-rich extract phase is introduced into a stripping column through two separated loci; the bottoms from the stripping column, a polar hydrocarbon-containing, solvent-rich stream, is introduced into an upper portion of the solvent recovery column. Polar hydrocarbons in concentrated form are recovered as an overhead stream, a lean solvent stream, virtually free from hydrocarbons, is withdrawn as a bottoms product and recycled in part to the extraction zone, and admixed in part with that portion of the extract phase introduced into the upper of the two separated loci. An internally prepared vaporous stripping medium is introduced into the lower portion of the solvent recovery column.
- Assignee:
- UOP Inc.
- Patent Number(s):
- US 4083772
- OSTI ID:
- 6817756
- Country of Publication:
- United States
- Language:
- English
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