| 摘要 |
A centrifuge (2) including a non-rotatable containment vessel (4), a rotatable centrifuge tube (12) within said vessel, an inlet assembly (7) for dirty gas, an outlet assembly for clean gas, and an outlet assembly (9) for dirty gas, said inlet assembly for the dirty gas and said outlet assembly for the dirty gas being located in close mutual proximity and at or towards one end of the centrifuge tube, the outlet for the clean gas being located at the opposite end of the centrifuge tube, the flow of gas entering the centrifuge tube being reversed within the centrifuge tube so as to increase the residence time of the dirty gas within said centrifuge tube. The centrifuge tube is supported on spaced foil bearings (23) located at predetermined spacings relative to each other and to the ends and centre of the centrifuge tube.
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