Patent ID: 6248157
Filing Date: 2001-06-19
Classification: B01D,G01N

Abstract:
A flow-through vacuum degassing unit for degassing one or more liquids comprising:a vacuum chamber adapted to be connected to a source for creating a vacuum in the chamber;inlet and outlet connections for admitting and discharging liquid to be degassed;a continuous tube for conducting the liquid through the chamber, the tube being connected between the inlet and the outlet connection and the tube being formed of a polymeric material permeable to pass dissolved gases therethrough but liquid impermeable; andcontrol means for operating the source for creating a vacuum in the chamber responsive to a sensed vacuum level in the chamber, with said control means being designed to operate said vacuum source at a relatively rapid rate during initial pump down, and being further adapted to operate said vacuum source at a substantially steady but lower rate after a desired level of vacuum has been achieved.