Gas separation – Means within gas stream for conducting concentrate to collector
Patent
1988-05-10
1989-12-12
Nozick, Bernard
Gas separation
Means within gas stream for conducting concentrate to collector
55416, 55394, 55457, 2105121, B01D 4512
Patent
active
048865230
ABSTRACT:
This disclosure includes a process and apparatus for subsonic aerodynamic separation of components existing in condensed and/or condensable form in a gaseous stream, in which the gaseous stream undergoes successively an expansion up to high subsonic velocities and a recompression by deceleration, with inertial separation of the pre-existing particles as well as of the particles formed and/or enlarged by condensation. Within the flowing gaseous stream, a gradient of concentration of the particles is created, in the same direction as the pressure gradient within the stream. Separation of the particles occurs in an axisymmetric chamber bounded by an outer wall and an inner core and including a fixed array of deflecting blades for transforming the essentially axial motion of the stream entering the chamber into an helico-spiral motion, and a fixed array of straightening blades for transforming the helico-spiral motion of the stream before its exits from the chamber into an essentially axial motion. The inlet and outlet cross-sections of each array are cylindrical surfaces coaxial with the outer wall and the inner core. Condensation occurs by expansion of the gaseous stream particularly in an inner zone between the arrays at high subsonic velocity. Expansion is identical along all streamlines within the gaseous stream and the particles separating from each streamline of the gaseous stream are subject to identical centrifugal forces driving them towards the outer layer of the gaseous stream.
REFERENCES:
patent: 2569909 (1951-10-01), Umney
patent: 3258895 (1966-07-01), Wiebe et al.
patent: 3616616 (1971-11-01), Flatt
patent: 4311494 (1982-01-01), Conner et al.
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