Process for the separation of butadiene by plural stage extracti

Details Process for the separation of butadiene by plural stage extracti Process for the separation of butadiene by plural stage extracti

1977-03-09

1978-12-05

Bascomb, Jr., Wilbur L.

Distillation: processes, separatory

With chemical reaction

Including step of adding catalyst or reacting material

203 53, 203 60, 203 74, 203 77, 203 98, 203DIG19, 2606815R, B01D 340, C07C 708

Patent

active

041284577

ABSTRACT:
Butadiene is recovered from a hydrocarbon fraction containing it together with butenes and acetylene hydrocarbons by introducing said fraction into a first extractive distillation column, feeding aqueous acetonitrile into said column above the introduction point of said fraction and extracting a vapor stream containing butadiene below said introduction point; feeding said vapor stream into a second extractive distillation column, feeding aqueous acetonitrile above the introduction point of said vapor stream and recovering a vapor stream consisting essentially of butadiene at the top of said second column; and rectifying this last vapor stream to recover pure butadiene.

REFERENCES:
patent: 3000794 (1961-09-01), Tschopp
patent: 3230157 (1966-01-01), Hill et al.
patent: 3436438 (1969-04-01), Takao et al.
patent: 3496070 (1970-02-01), Woerner et al.
patent: 3705204 (1972-12-01), Horie et al.
patent: 3851010 (1974-11-01), Rescalli et al.

Affiliated with

Also associated with

Rating

Process for the separation of butadiene by plural stage extracti does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for the separation of butadiene by plural stage extracti, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the separation of butadiene by plural stage extracti will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-285560