Gas separation – Means within gas stream for conducting concentrate to collector
Patent
1979-11-08
1981-07-21
Lacey, David L.
Gas separation
Means within gas stream for conducting concentrate to collector
55347, 55396, 55416, 55426, 55431, 55457, 55267, 209144, B01D 4512
Patent
active
042796245
ABSTRACT:
A centrifugal separator has an outer tube and an inner tube concentrically positioned therein, forming an annular gas inlet channel between the outer and inner tubes, and slots are defined in the inner tube to provide communication between this annular channel and the space within the inner tube. A collection chamber for collecting particulate matter and for allowing the flow of bleed gases is provided towards the bottom of the annular channel. Transverse discharge means communicate with the collection chamber for removing material therefrom. The separator includes at least one swirling vane for imparting swirling motion to gas flowing in the annular channel. Separation of particulate matter from the swirling gas due to centrifugal force occurs when the gas initially enters the annular channel and as the gas swirls within the annular channel. Further separation of particulate matter occurs when the swirling gas in the channel experiences a sudden change in flow direction during entry into the slots in the inner tube. Clean gas discharge means are provided at the bottom of the inner tube so that clean gas exits the separator from below. A plurality of such centrifugal separators are mounted in a pair of upper and lower parallel tube sheets located within a separator vessel. The tube sheets define a main separation chamber therebetween, with a gas inlet chamber thereabove, and a clean gas discharge chamber therebelow. Gas containing particulate matter enters the inlet chamber of the vessel from above, passes directly down into the multiple separators in the separation chamber, and is discharged downwardly through the bottom discharge chamber. Means to remove separated particulate matter and bleed gas from the separation chamber are provided.
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