Process for preparing highly pure raffinate ii and methyl...

Details Process for preparing highly pure raffinate ii and methyl... Process for preparing highly pure raffinate ii and methyl...

C - Chemistry, Metallurgy

07

C

C07C 41/42 (2006.01) B01D 3/00 (2006.01) C07C 7/04 (2006.01) C07C 7/148 (2006.01) C07C 11/09 (2006.01) C07C 41/06 (2006.01) C10L 1/02 (2006.01)

Patent

CA 2359442

The invention relates to a process for preparing methyl tert-butyl ether (MTBE) and a virtually isobutene-free C4-hydrocarbon mixture by reaction of an isobutene-containing C4-hydrocarbon stream with methanol over an acid catalyst, wherein, in a first stage in one or more reactor(s), isobutene is reacted with methanol to equilibrium formation of MTBE and, in a second stage in a reactive distillation column, the remaining isobutene present in the mixture is reacted over an acid catalyst, where the reactive distillation column is operated in a pressure range from 3 to 15 bar abs. and in a temperature range in the reaction zone from 55°C to 75°C at a hydraulic loading in the catalytic packing of from 10% to 110% and a reflux ratio of less than 1.

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