Patent ID: 8495906
Filing Date: 2013-07-30
Classification: B01D,G01N

Abstract:
1. A deaerator comprising: a liquid flow space; a reduced-pressure space; a gas permeable film that separates said spaces; and a pump for discharging a gas from within the reduced-pressure space to the outside, wherein the deaerator further comprises a gas partial pressure variation suppression means for suppressing variation in partial pressure of a specific gas in the reduced-pressure space, wherein the gas partial pressure variation suppression means is an oxygen partial pressure variation suppression means for suppressing variation in oxygen partial pressure in the reduced-pressure space, the oxygen partial pressure variation suppression means is configured so as to introduce a gas from the exterior of the deaerator into the reduced-pressure space during deaeration, the oxygen partial pressure variation suppression means has a high pressure drop part for increasing transfer resistance against the gas to be introduced into the reduced-pressure space, and the high pressure drop part comprises a porous filter.