Solids accumulating flotation separator

Details Solids accumulating flotation separator Solids accumulating flotation separator

2005-05-17

2005-05-17

Lithgow, Thomas M. (Department: 1724)

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

C210S709000, C210S744000, C210S806000, C210S221200

Reexamination Certificate

active

06893572

ABSTRACT:
The invention is directed to a method for flotation separation. The method has the steps of feeding an influent stream containing liquids and solids to a vessel, while removing clarified liquid at the same time as the feeding process. The method employs a step for emptying the solids from the vessel based on the solids having formed a float blanket of a predetermined depth. The solids are removed from the vessel through a bottom nozzle as opposed to being skimmed off the top surface with mechanical separators. The depth of the float blanket can be monitored. Once it is determined that the float blanket has reached the predetermined depth, the feed to the vessel is stopped and the vessel is emptied of liquids and solids through a suitable outlet other than the feed inlet, by an arrangement of valves and lines.

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