Degassing of liquids
AssigneeSaint-Gobain Industries
InventorsRudolf Pelzer, Heinz Scholl
Life of this patent
Estimating the term…
Abstract
Viscous liquids are degassed by a centrifuge in an enclosure at reduced pressure. The centrifuge has concentric annuli to provide a zig-zag path for the liquid. The enclosure may be heated.
Claims8
A method of degassing viscous liquids comprising the steps of
- feeding the liquid to be degassed through a duct to the interior of a centrifuge vessel located within an enclosure in which the gas pressure is reduced,
- simultaneously rotating said vessel about an axis passing through said duct,
- directing the flow of liquid from said duct in a direction substantially perpendicular to the direction of flow from said duct by means of a distributor plate within said vessel transverse to said axis of rotation,
- continuing the flow of liquid in a zig-zag path from the inside to the outside of said vessel over inner surfaces of a plurality of coaxial annuli and removing gas from said annuli and enclosure,
- and discharging the liquid from said enclosure.
A centrifuge for degassing viscous liquids under reduced pressure, which comprises an enclosure, a centrifuge vessel attached for rotation within said enclosure, motor means for rotating said vessel about an axis of rotation, a duct on said axis connecting into said vessel for feeding the liquid to be degassed to the interior of said vessel, and discharge means for discharging the degassed liquid from said enclosure, said enclosure being provided with evacuation means for reducing the gas pressure therein, said vessel comprising a plurality of coaxial annuli having inner surfaces including means defining a zig-zag path of flow for the liquid from the inside to the outside of said vessel, and a distributor comprising a plate within said vessel transverse to said axis to direct liquid entering said vessel through said hollow duct towards the innermost of said annuli and means for the removal of gas from said annuli.
Dependencies are inferred from the claim text.