Separation of m-xylene from o-xylene by extractive distillation

Details Separation of m-xylene from o-xylene by extractive distillation Separation of m-xylene from o-xylene by extractive distillation

1986-01-06

1987-06-30

Bascomb, Wilbur

Distillation: processes, separatory

Adding material to distilland except water or steam per se

At least two materials

203 56, 203 60, 203 64, 203 65, 585805, 585808, 585866, B01D 340, C07C 708

Patent

active

046768750

ABSTRACT:
m-Xylene is difficult to separate from o-xylene by conventional rectification or distillation because of the close proximity of their boiling points. m-Xylene can be readily separated from o-xylene by using extractive distillation in which the extractive agent is dimethylformamide; dimethylformamide and 1,4-butanediol; dimethylformamide, adiponitrile and dihexyl phthalate.

REFERENCES:
patent: 2456561 (1948-12-01), Lake et al.
patent: 2494274 (1950-01-01), Woerner
patent: 2721170 (1955-10-01), Johnson
patent: 2763604 (1956-09-01), Dorsey et al.
patent: 2799629 (1957-07-01), Clough et al.
patent: 2957811 (1960-10-01), Geiser
patent: 3116224 (1963-12-01), Bailey
patent: 3328267 (1967-06-01), Muller
patent: 4488937 (1984-12-01), Berg et al.

Affiliated with

Also associated with

Rating

Separation of m-xylene from o-xylene by extractive distillation does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Separation of m-xylene from o-xylene by extractive distillation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Separation of m-xylene from o-xylene by extractive distillation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-446222