Process for the dissociation of MTBE

Details Process for the dissociation of MTBE Process for the dissociation of MTBE

2011-06-28

2011-06-28

Singh, Prem C (Department: 1771)

Chemistry of hydrocarbon compounds

Unsaturated compound synthesis

From nonhydrocarbon feed

C585S001000, C585S312000, C585S324000, C585S327000, C585S640000, C585S641000, C585S649000, C585S809000, C585S811000, C585S856000, C585S864000

Reexamination Certificate

active

07968758

ABSTRACT:
A process for the dissociation of methyl tert-butyl ether (MTBE), which includes at leasta) catalytic dissociation of MTBE which is present in two streams I and VII over a catalyst to give a dissociation product II,b) separation by distillation of the dissociation product II obtained in a) into an overhead stream III containing more than 90% by mass and a bottom stream IV containing diisobutene, MTBE and more than 80% of the methanol present in the dissociation product II,c) separation by distillation of the bottom stream IV obtained in b) into a methanol-containing bottom stream V, a side stream VI containing diisobutene, methanol and MTBE and an overhead stream VII containing MTBE and methanol andd) recirculation of the overhead stream VII to a).

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