Patent ID: 6242662
Filing Date: 2001-06-05
Classification: C07C

Abstract:
A process for obtaining but-1-ene from but-2-enes, comprising passing a feed containing at least one of the geometrical isomers of but-2-ene to a distillation zone linked with a hydro-isomerization zone located at least partly outside said distillation zone, the feed to the distillation zone being introduced to at least one level of the said distillation zone; passing a charge to the hydro-isomerization zone, said charge being withdrawn from at least one withdrawal level of the distillation zone; withdrawing an effluent from the hydro-isomerization zone and at least partly reintroducing said effluent into the distillation zone to at least one level of reintroduction; and withdrawing an overhead containing at least but-1-ene from the top of the distillation zone, and wherein a hydro-isomerization reaction is conducted at least partly in said hydro-isomerization zone located outside the distillation zone.