Digester tank with foam control cover

Details Digester tank with foam control cover Digester tank with foam control cover

B - Operations, Transporting

01

D

165/66, 362/9

B01D 47/02 (2006.01) B01D 19/02 (2006.01) B01D 21/00 (2006.01) C02F 1/00 (2006.01) C02F 3/28 (2006.01) C02F 11/04 (2006.01)

Patent

CA 1275243

ABSTRACT The invention relates to apparatus for carrying out mixed liquid, gas and solid phase reactions and is intended for use in sewage digestion tanks where the removal of sludge and foam from the tanks is required. A reactor vessel is provided which includes a floating cover vertically movably maintained within the vessel. A device for limiting gas pressure is connected to the vessel below the cover. buoyancy chamber is provided which is supported by the cover and located therebelow and is intended to be at least partially immersed within the liquid in the vessel. A foam/sludge withdrawal opening is located below the uppermost portion of the buoyancy chamber and connects the interior of the vessel to the exterior. In a preferred embodiment, a ballast member is supported from the cover and extends from the roof to below the buoyancy member.

544495

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