E - Fixed Constructions – 02 – B
Patent
E - Fixed Constructions
02
B
182/132
E02B 15/04 (2006.01) B01D 17/02 (2006.01) E03F 5/16 (2006.01)
Patent
CA 1089775
ABSTRACT OF THE DISCLOSURE: A marine vessel is provided with a closed tank for gravity separation of immiscible mixtures of water and other fluid lighter than water, such as oil. A manifold extends around the upper inner periphery of the tank and discharges upwardly into the tank through a multiplicity of ports, the tank preferably being completely filled with water and the other liquid. Separated water is withdrawn from the bottom of the tank through a plurality of coalescing filters having large exposed coalescer screens. Hoods over the coalescers direct flow thereto to ensure uniform distribution of water and oil globules over their surfaces and direct coalesced oil toward the upper region of the tank in a concentrated stream. A pump withdraws the water from the tank and discharges it, for example, into the ambient water. Flow produced by the pump can be reversed for backwashing the coalescers. A detector and water flow control in the tank senses the level of the interface between separated water and lighter liquid (oil) and when that interface reaches a predetermined lower level, flow of water out of the separator is cyclically reversed while lighter liquid is discharged from the top of the tank until the interface rises to a desired upper level.
266285
National Marine Service Incorporated
Robic Robic & Associes/associates
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