Gas and liquid contact apparatus – Fluid distribution – Valved
Patent
1972-11-15
1980-08-19
Miles, Tim R.
Gas and liquid contact apparatus
Fluid distribution
Valved
261121R, 261124, 137854, 137856, 137857, 251146, B01F 304
Patent
active
042184070
ABSTRACT:
A sparger for efficient liberation of air when submerged in a body of liquid comprises a pressure-opened closure biased upwardly to constrict the discharge of air under a rigid annular seat member. Air is thus discharged at an exactly predetermined and constant level. When air is supplied to the interior of the sparger at the lowest volume of flow likely to be desired, it overcomes the bias of the closure and opens the closure, equalizing means ensuring uniform distribution. With different forms, the uniform distribution may be at all points around the periphery of the seat, at selected points, only, or at selected points when the air flow is low, and all around the periphery at high volume. The bias toward closed position may be supplied by the resiliency of the valve, or by buoyancy action, or both. A predetermined back pressure substantially constant through all flow rates can be provided by using buoyancy alone. The equalizing means may be a parallel-movement mounting or movement limiting means. The limiting means may yield for higher air volumes.
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"Eimco Type P Non-Clog Diffusers"; Eimco; Salt Lake City, Utah; SM-1059; Sep. 1965, 2 pages.
Chicago Bridge & Iron Company
Miles Tim R.
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