Process and apparatus for obtaining pure 1,3-butadiene by subjecting thereof to the distillation of raw 1,3-butadiene

摘要

A process for obtaining pure 1,3-butadiene from crude 1,3-butadiene by distillation is carried out in a dividing wall column in which a dividing wall is located in the longitudinal direction of the column to form an upper common column region, a lower common column region, a feed section and an offtake section.