Patent ID: 6071331
Filing Date: 2000-06-06
Classification: B01D,D21C,D21D

Abstract:
A closed system in which gas is separated from a liquid, or a cellulose fiber suspension, comprising:a first conduit and a second conduit;a spiral housing having a central axis, a substantially axial liquid or suspension inlet channel with an inner wall, a liquid or suspension outlet, and a separated gas outlet, said separated gas outlet adjacent said central axis;a shaft disposed within said spiral housing and connectable to means for rotating said shaft about said central axis;a flange extending generally perpendicular to said shaft within said spiral housing for rotation about said central axis, at least one opening extending through said flange generally parallel to said axis of rotation;a plurality of blades mounted to said flange on a face of said flange opposite said liquid suspension inlet;path defining means disposed within said inlet channel for effecting spiral rotational movement of the liquid or suspension as it moves in said inlet channel toward said spiral housing, defining at least one spiral path, so that the gas starts to separate from the liquid or suspension in the at least one spiral path; andsaid liquid or suspension inlet and said liquid or suspension outlet connected to said first and second conduits to provide a close system.