Separation device

摘要

A separator device comprises a cylindrical separation chamber within which a motor-driven rotor is situated. The rotor has vanes. In operation, an inflowing mixture enters through an inlet and is subjected to centrifugal force imposed by the rotation of the rotor. A lighter liquid fraction leaves through an annular outlet, and a heavier liquid fraction leaves through an annular outlet. Solids pass through a screen to a region where rotational flow is reduced or absent. The solids in the region are fluidized by liquid passing through the screen, and are extracted from outlets. Control means is provided to control operation of the device in response to changes in the incoming mixture.

主权项

1. A separation device comprising:
an outer wall defining a separation chamber; a motor-driven rotor disposed within the chamber for rotation relative to the outer wall about a rotor axis; at least one vane disposed on the rotor and extending outwardly with respect to the rotor axis; a perforated screen which at least partially surrounds the rotor, the screen being fixed with respect to the outer wall and spaced from the outer wall to define an annular zone between the screen and the outer wall; an inlet to the separation chamber for a mixture to be separated; a plurality of outlets from the separation chamber, situated at different distances from the rotor axis for discharging respective phases of the mixture from the separation chamber, the outlets including: two fluid phase outlets, comprising a lighter phase outlet and a heavier phase outlet, the heavier phase outlet being situated radially outwardly of the lighter phase outlet with respect to the rotor axis, and a solids outlet provided in the outer wall.