Process for the separation of aromatic hydrocarbons from a hydro

Details Process for the separation of aromatic hydrocarbons from a hydro Process for the separation of aromatic hydrocarbons from a hydro

1985-03-05

1986-06-17

Metz, Andrew H.

Mineral oils: processes and products

Fractionation

Liquid extraction with solvents

208313, C10G 2120

Patent

active

045954917

ABSTRACT:
A process is disclosed for the separation of an aromatic hydrocarbon from a hydrocarbon mixture of varying aromatic content, by means of extractive distillation, employing as a selective solvent, an N-substituted morpholine, wherein the N-substituent contains up to 7 carbon atoms. In the entry product, the weight ratio of light non-aromatic hydrocarbons to heavy non-aromatic hydrocarbon should amount to at least 0.4 to 1. The light non-aromatic hydrocarbon necessary for adjustment of this ratio can be either introduced directly into the lower part of the extractive distillation column, or added to the entry product before introducing the latter to the extractive distillation column.

REFERENCES:
patent: 3207092 (1965-09-01), Van Kleef et al.
patent: 3210269 (1965-10-01), Kosters et al.
patent: 3435087 (1969-03-01), Broughton
patent: 3470088 (1969-09-01), Vickers

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