Recovery of solvent from a hydrocarbon extract

Details Recovery of solvent from a hydrocarbon extract Recovery of solvent from a hydrocarbon extract

1982-05-12

1983-12-06

Garvin, Patrick

Mineral oils: processes and products

Fractionation

Liquid extraction with solvents

208321, C10G 2120, C10G 2128

Patent

active

044192274

ABSTRACT:
A lubricating oil solvent refining process employing N-methyl-2-pyrrolidone as solvent in which solvent is recovered from a solvent-oil mixture in a staged series of vaporization zones at progressively increasing pressure with external heat supplied only to the vaporization stage having the highest pressure followed by vacuum flash vaporization and inert gas stripping of further portions of the solvent from the extract wherein the partially denuded extract from the vacuum flash vaporization stage is heated in the presence of inert gas prior to introduction into the inert gas stripping zone.

REFERENCES:
patent: 2534382 (1950-12-01), Skelton et al.
patent: 2923680 (1960-02-01), Bushnell
patent: 3451925 (1969-06-01), Morris et al.
patent: 3461066 (1969-08-01), Morris et al.
patent: 3470089 (1969-09-01), Morris et al.
patent: 3476681 (1969-11-01), Davies et al.
patent: 4013549 (1977-03-01), Bushnell
patent: 4017383 (1977-04-01), Beavon
patent: 4057491 (1977-11-01), Bushnell et al.
patent: 4294689 (1981-10-01), Sequeira, Jr. et al.
patent: 4342646 (1982-08-01), Sherman

Affiliated with

Also associated with

Rating

Recovery of solvent from a hydrocarbon extract does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Recovery of solvent from a hydrocarbon extract, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Recovery of solvent from a hydrocarbon extract will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2028725