Patent ID: 8415520

Claim:
A method of processing a feed mixture comprising water, 3-methyl-1-butene and at least one methylbutene selected from the group consisting of 2-methylbut-1-ene and 2-methylbut-2-ene, said method comprising: a first distilling, in a primary distillation column, of the feed mixture, to obtain a first overhead product and a first bottom product, said first overhead product comprising water and the at least one methylbutene selected from the group consisting of 2-methylbut-1-ene and 2-methylbut-2-ene, and said first bottom product comprising 3-methyl-1-butene; b) condensing, in a condensation vessel, the first overhead product, to obtain a condensate comprising a liquid aqueous phase and a liquid organic phase; c) separating the condensate into the liquid aqueous phase and the liquid organic phase; d) discharging the liquid aqueous phase; e) a first recirculating, of the liquid organic phase to the primary distillation column; f) a second distilling, in a secondary distillation column, of the first bottom product, to obtain a second overhead product comprising 3-methyl-1-butene, and a second bottom product.