Extraction of aromatics with N-cyclohexyl-2-pyrrolidone

Details Extraction of aromatics with N-cyclohexyl-2-pyrrolidone Extraction of aromatics with N-cyclohexyl-2-pyrrolidone

1985-02-14

1986-02-11

Gantz, D. E.

Mineral oils: processes and products

Fractionation

Liquid extraction with solvents

208321, 208323, C10G 2120

Patent

active

045697558

ABSTRACT:
This invention relates to a low energy process for the solvent extraction of aromatic hydrocarbons from hydrocarbon streams containing the same, using as the solvent N-cyclohexyl-2-pyrrolidone together with small amounts of water. This solvent may be recovered from the aromatics by cooling the aromatic/solvent mixture, and adding water, whereby separation takes place without distillation. The solvent may then be separated from the water by heating the solvent/water mixture.

REFERENCES:
patent: 3451925 (1969-06-01), Morris et al.
patent: 3617535 (1971-11-01), Weitz
patent: 3953324 (1976-04-01), Deal et al.
patent: 4328092 (1982-05-01), Sequeira, Jr.

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