Controlled epoxidation of propylene

Details Controlled epoxidation of propylene Controlled epoxidation of propylene

C - Chemistry, Metallurgy

07

D

C07D 303/04 (2006.01) C07C 29/00 (2006.01) C07C 29/132 (2006.01) C07C 31/12 (2006.01) C07D 301/19 (2006.01)

Patent

CA 2129711

CONTROLLED EPOXIDATION OF PROPYLENE (Docket No 81,154 -F ) ABSTRACT OF THE DISCLOSURE In a regulated process wherein propylene is reacted with tertiary butyl hydroperoxide in solution in tertiary butyl alcohol to produce propylene oxide and tertiary butyl alcohol in a reactor system comprising a first isothermal segment comprising a plurality of at least four sequentially intercon- nected internally cooled reactors, and a second adiabatic segment, an initial feed mixture is continuously charged to the first reactor, comprising propylene and a recycle stream composed of about 25 to about 75 wt % of the combined weight of said propylene and said recycle stream, a plurality of feed streams comprising a tertiary butyl alcohol solution of tertiary butyl hydroperoxide and molyb- denum catalyst are charged to each of at least four sequen- tially interconnected reactors, and about 60 to 80 wt% of the tertiary butyl hydroperoxide is converted in the isothermal segment; the recycle stream being removed at the end of the isothermal segment and the remainder of the intermediate reaction mixture being passed through the adiabatic segment where additional tertiary butyl hydroperox- ide is converted.

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