Patent ID: 7598405
Filing Date: 2009-10-06
Classification: C07D

Abstract:
1. A process for reducing a butyl methyl ether content of tetrahydrofuran comprising: adding methanol to a tetrahydrofuran feed stream comprising butyl methyl ether to form a THF mixture; distilling the THF mixture in one or more distillation stages in a single separating apparatus; removing a top draw from an upper portion of the separating apparatus; and removing bottom draw from a lower portion of the separating apparatus; wherein a content of butyl methyl ether in % by weight in the top draw is greater than the content of butyl methyl ether in the THF mixture, and a content of butyl methyl ether in % by weight in the bottom draw is less than the butyl methyl ether content in the tetrahydrofuran feed stream.