DEHYDRATING SYSTEM AND DEHYDRATING METHOD

摘要

Provided are a dehydrating system and a dehydrating method which achieve improvement in a membrane performance. The dehydrating system includes a first preheater 3a; multiple dehydrating apparatuses 1a, 1b and 1c which are connected in series downstream of the preheater and which are configured to remove water from an organic aqueous solution; and returning means 6 for returning a part of the organic aqueous solution having passed through one or more of the dehydrating apparatuses to the dehydrating apparatuses or the dehydrating apparatus upstream of the dehydrating apparatuses.