A device for recovering liquid droplets from a fluid flow stream including
a rotatable element comprising wall elements configured to partially
enclose a volume with an annular perimeter wall that includes an inside
surface radially offset from and facing an axial center, a fixed base
wall supports the rotatable element about the axial center, an input
fluid conduit delivers the fluid flow stream into the fluid volume, means
for rotating the rotatable element for generating a centrifugal force
capable of forming a layer of liquid held by the centrifugal force
against the inside surface, and an output liquid conduit disposed to
collect liquid from the layer of liquid, wherein the layer of liquid
rotates with the inside surface with a tangential velocity vector and the
collection aperture is fixed in position opposed to the tangential
velocity vector such that liquid in the layer of liquid enters the
collection aperture.