| abstract |
The present inventionn n n a) catalytic dissociation of MTBE present in both streams I and VII over the catalyst to give dissociation product II,n n n b) distillation of the dissociation product II obtained in step a) to top stream III comprising more than 90% by mass of isobutene and bottom stream comprising greater than 80% of diisobutene, MTBE, and methanol present in dissociation product II. Separating into IV,n n n c) distillation of bottom stream IV obtained in step b) to separate into side stream VI comprising methanol containing bottom stream V, diisobutene, methanol and MTBE, and top stream VII comprising MTBE and methanol Steps, andn n n d) recycling overhead stream VII to step a)n n n It provides a methyl tert-butyl ether (MTBE) dissociation method comprising at least. |