Process for the preparation of propylene oxide

Details Process for the preparation of propylene oxide Process for the preparation of propylene oxide

1980-02-14

1982-05-25

Milestone, Norma S.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

260502R, C07D30114

Patent

active

RE0309451

ABSTRACT:
Process for continuous production of propylene oxide (FIG. 1) from propylene and aqueous hydrogen peroxide. The aqueous hydrogen peroxide is first reacted with propionic acid in the presence of acid catalyst to form perpropionic acid (1). The perpropionic acid is taken up by extraction in benzene (5, 12), and following drying of the benzene solution (16), the perpropionic acid in the solution is reacted with propylene (18) for oxidation of the propylene to propylene oxide and conversion of the perpropionic acid back to propionic acid. The reaction mixture is worked up to separate propylene oxide, propionic acid and benzene (25, 27, 31, 33), and the latter two are recycled. In the benzene extraction (5, 12), an aqueous raffinate (7) is formed containing hydrogen peroxide and acid catalyst. Water is removed from the aqueous raffinate (8) and the concentrate is recycled to the propionic acid reactor. Make-up hydrogen peroxide can be added to the aqueous raffinate before the removal of water.

Affiliated with

Also associated with

Rating

Process for the preparation of propylene oxide 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 preparation of propylene oxide, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the preparation of propylene oxide will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2071105