Aromatic hydrocarbon separation via solvent extraction

Details Aromatic hydrocarbon separation via solvent extraction Aromatic hydrocarbon separation via solvent extraction

1976-04-22

1977-09-06

Levine, Herbert

Mineral oils: processes and products

Fractionation

Liquid extraction with solvents

260674SE, C10G 2128

Patent

active

040466752

ABSTRACT:
A solvent extraction process for separating polar hydrocarbons from non-polar hydrocarbons. The solvent-rich extract phase is introduced into a stripping column, the bottoms from which, a polar hydrocarbon-containing, solvent-rich stream, is introduced into an upper portion of a solvent recovery column. A vaporous stripping medium is introduced into a lower portion of the solvent recovery column. Polar hydrocarbons in concentrated form are recovered as an overhead stream, a solvent-rich stream, virtually free from hydrocarbons, is withdrawn as a bottoms product and recycled to the extraction zone, while a hydrocarbon-containing side-cut solvent-rich phase is withdrawn and introduced into the stripping column with the extract phase.

REFERENCES:
patent: 3065169 (1962-11-01), Luiderweg et al.
patent: 3396101 (1968-08-01), Broughton
patent: 3466346 (1969-09-01), DeGraff et al.

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