DIVIDED WALL DISTILLATION COLUMN FOR PRODUCING HIGH PURITY NORMAL BUTANOL, AND NORMAL BUTANOL DISTILLATION METHOD

摘要

The present invention relates to a dividing wall distillation column for producing high-purity n-butanol, and a method for the production of high-purity n-butanol by fractional distillation. More particularly, the present invention relates to a method which provides a dividing wall distillation column with crude n-butanol as a feed to perform a fractional distillation of n-butanol, and an apparatus thereof. The dividing wall distillation column of the present invention exhibits the effects of a two distillation column from only one distillation column, thereby reducing energy and the costs of installing the apparatus as compared to conventional distillation systems.

主权项

1. A dividing wall distillation column comprising a condenser; a reboiler; and a main column including a dividing wall installed therein,
wherein the main column is divided into a top zone, an upper feed zone, an upper outflow zone, a lower feed zone, a lower outflow zone and a bottom zone, and wherein the main column has at least one inflow and at least three outflows, the inflow being a stream of crude n-butanol as a feed F flowing into an intermediate feed plate NR1, where the upper feed zone and the lower feed zone of the main column are in contact with each other, and at least one of the outflows is substantially a stream of n-butanol.