A process is disclosed for recovering 1-butene from a feed steam comprising n-butane, isobutane and butene isomers using a single, divided wall distillation column. The disclosed process includes introducing the feed steam into an inlet of a first side of a distillation column, wherein the distillation column comprises a top, a bottom and a center dividing wall extending between the bottom and the top of the column and dividing the column into the first side and a second side. The process includes taking off an isobutane stream from the top of the second side of column, taking off a 1-butene stream as a bottoms stream from the second side of the column, and taking off a combination 2-butene and n-butane stream as a bottom stream from the first side of column.