Direct return of oxygenate recycle stream in olefin...

Details Direct return of oxygenate recycle stream in olefin... Direct return of oxygenate recycle stream in olefin...

2006-11-21

2006-11-21

Caldarola, Glenn (Department: 1764)

Chemistry of hydrocarbon compounds

Unsaturated compound synthesis

From nonhydrocarbon feed

C585S921000

Reexamination Certificate

active

07138558

ABSTRACT:
The invention is a process and the corresponding apparatus for producing light olefins from oxygenates in an OTO reactor comprising sending an oxygenate feed stream through a feed stream distributor into an OTO reactor, contacting the oxygenates with a catalyst to produce a mixture comprising light olefins, diolefins, unreacted oxygenate and other by-products; separating the unreacted oxygenate and diolefins from said light olefins and said by-products; and returning the unreacted oxygenate and diolefins to the OTO reactor. The unreacted oxygenate and diolefins are sent through at least one feed nozzle into said reactor at a point separate from the oxygenate feed stream.

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