Patent ID: 6305473
Filing Date: 2001-10-23
Classification: B09C

Abstract:
An apparatus for multi-phase vacuum extraction, comprising:a first substantially vertically oriented conduit having an upper end portion and a lower end portion having a closed lower end, wherein said upper end portion includes a vacuum suction port, wherein said first substantially vertically oriented conduit has sidewalls which define an inner surface at the upper end portion of said first substantially vertically oriented conduit;a second substantially vertically oriented conduit having an open upper end portion and a lower end portion, wherein said second substantially vertically oriented conduit is axially disposed within said first substantially vertically oriented conduit, wherein said second substantially vertically oriented conduit has sidewalls which define an outer surface at the upper end portion of said second substantially vertically oriented conduit; anda seal disposed between the outer surface of the open upper end portion of said second substantially vertically oriented conduit, and the inner surface of the upper end portion of said first substantially vertically oriented conduit below said vacuum suction port;whereby a multi-phase effluent is capable of being withdrawn from said vacuum suction port when said lower end portion of said first substantially vertically oriented conduit and said lower end portion of said second substantially vertically oriented conduit are positioned through a level of liquid, and a vacuum is drawn on said vacuum suction port.