Gas separation – Means within gas stream for conducting concentrate to collector
Patent
1988-07-15
1990-02-27
Hart, Charles
Gas separation
Means within gas stream for conducting concentrate to collector
55345, 55398, 55401, 55404, 55452, 208161, 422144, B01D 4512, C10G 1118
Patent
active
049042815
ABSTRACT:
A method for separating particulate solids from a gaseous stream laden with the solids includes discharging the gaseous stream with a swirling movement downwardly into a containment vessel, and impinging the stream on a bed of the separated solids maintained at the lower end of the vessel to reverse the direction of gas flow upwardly through a return zone which encircles the core zone. The gaseous stream is withdrawn from the return zone at the upper end of the vessel and, optionally, may be passed from the return zone to a second stage separation zone, such as one or more cyclone separators, for removal of residual particulate solids from the gaseous stream. Apparatus of the invention includes a flow-constricting nozzle mounted on a containment vessel and having flow guide vanes and/or gas injection nozzles associated therewith to impart a swirling motion to the gaseous stream which is discharged from the nozzle downwardly into the containment vessel. One or more openings are provided about the upper end of the containment vessel and are connected in flow communication with the second stage separation zone.
REFERENCES:
patent: 4414100 (1983-11-01), Krug et al.
patent: 4443551 (1984-04-01), Lionetti et al.
patent: 4572780 (1986-02-01), Owen et al.
Engelhard Corporation
Hart Charles
Moselle I. L.
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