Patent ID: 9174164
Filing Date: 2015-11-03
Classification: B01D,B01J,F28C,Y02B

Abstract:
1. An apparatus for dehumidifying gas, comprising: an inlet for receiving humid gas; an internal hydrophilic membrane including a superabsorbent polymer; a flow path for passing the humid gas across the internal hydrophilic membrane, wherein the membrane absorbs moisture from the humid gas to yield dehumidified gas; and an outlet for the dehumidified gas; wherein the membrane absorbs moisture from a first surface and releases water from a second surface upon achieving a steady state absorption/desorption rate; and the apparatus further comprises a water basin for temporarily storing water that is released from the second surface and an outlet for water from the basin, and a heat exchanger for cooling the water in the basin, the cooled water in the basin providing a positive vapor pressure gradient resulting in a decrease in vapor pressure between the first surface and the second surface of the membrane.