Methods for separating hydrocarbons by liquid extraction

Details Methods for separating hydrocarbons by liquid extraction Methods for separating hydrocarbons by liquid extraction

1982-02-16

1983-12-20

Gantz, Delbert E.

Mineral oils: processes and products

Fractionation

Liquid extraction with solvents

585860, C10G 2120

Patent

active

044216408

ABSTRACT:
Aromatic hydrocarbons are separated from a mixture thereof with paraffinic hydrocarbons by solvent extraction with N-(2-hydroxyethyl)-2-pyrrolidone containing a minor amount of water at specified elevated temperatures and pressures. Temperature variations within the specified range have little effect on the loading capacity and selectivity of the solvent thus greatly simplifying process control.

REFERENCES:
patent: 2771494 (1953-03-01), Weedman
patent: 2849396 (1958-08-01), Nelson
patent: 3157592 (1964-11-01), Fuerst et al.
patent: 3210259 (1965-10-01), Cornell et al.
patent: 3617535 (1971-11-01), Weitz et al.

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