Refining highly aromatic lube oil stocks

Details Refining highly aromatic lube oil stocks Refining highly aromatic lube oil stocks

1980-06-27

1982-06-08

Thomas, Earl C.

Mineral oils: processes and products

Fractionation

Liquid extraction with solvents

C10G 2120

Patent

active

043338240

ABSTRACT:
A process for solvent extraction of higher aromatic hydrocarbon oils with N-methyl-2-pyrrolidone wherein N-methyl-2-pyrrolidone is separated from a solvent-extract mix in a series of distillation steps with recirculation of a portion of a partially stripped extract mix from an intermediate distillation step to the extraction step to improve the solvent-oil ratio in the extraction step and conserve energy as compared with conventional processes in which the solvent power of N-methyl-2-pyrrolidone is moderated by incorporating water in the solvent.

REFERENCES:
patent: 2771494 (1956-11-01), Weedman
patent: 3299158 (1967-01-01), Wirth et al.
patent: 3451925 (1969-06-01), Morris et al.
patent: 3461066 (1969-08-01), Morris et al.
patent: 3721620 (1973-03-01), Paret et al.
patent: 3755154 (1973-08-01), Akabayashi et al.

Affiliated with

Also associated with

Rating

Refining highly aromatic lube oil stocks does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Refining highly aromatic lube oil stocks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Refining highly aromatic lube oil stocks will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-552158