Aromatic hydrocarbon separation process

Details Aromatic hydrocarbon separation process Aromatic hydrocarbon separation process

1976-07-19

1978-04-11

Levine, Herbert

Mineral oils: processes and products

Fractionation

Liquid extraction with solvents

260674SE, C10G 2128

Patent

active

040837726

ABSTRACT:
A solvent extraction process for separating polar hydrocarbons from non-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in concentrated form are recovered as an overhead stream, a lean solvent stream, virtually free from hydrocarbons, is withdrawn as a bottoms product and recycled in part to the extraction zone, and admixed in part with that portion of the extract phase introduced into the upper of the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.

REFERENCES:
patent: 2730558 (1956-01-01), Gerhold
patent: 3173966 (1965-03-01), Jones et al.
patent: 3396101 (1968-08-01), Broughton
patent: 3492222 (1970-01-01), Van Tassell

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