Patent ID: 9151538
Filing Date: 2015-10-06
Classification: B01D,D02J,F26B

Abstract:
1. A drying method comprising: supplying a drying gas from a gas supply unit into a tubular drying member, wherein the gas supply unit is disposed on a side surface of the tubular drying member, and the tubular drying member comprises an opening portion through which a hollow fiber membrane is input and output at at least one end thereof in a length direction, the hollow fiber membrane passing inside the tubular drying member while forming a gap between the hollow fiber membrane and an inner circumferential surface of the tubular drying member; injecting part of the drying gas into a hollow portion of the hollow fiber membrane from an outside of the hollow fiber membrane; and discharging moisture present in the hollow fiber membrane from an outer surface of the hollow fiber membrane by a pressure difference, between the outside of the hollow fiber membrane and the hollow portion thereof, that occurs outside the tubular drying member.