Multistage centrifugal extractor

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United States of America Patent

PATENT NO 5453192





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A centrifugal extractor comprising several superimposed stages (E1, E2, E3) has a fixed casing (10) within which rotate at high speed bowls (22) driven by a common vertical shaft (18). An immiscible light liquid and heavy liquid are emulsified and injected into a separating compartment (32) defined by each of the bowls (22) by ducts (54) forming ejectors and which are formed in the lower wall of the corresponding bowl. The light phase passes upwardly from one stage to the next by annular passages (46) surrounding the shaft (18), while the heavy phase redascends by gravity in return channels (44) formed in the fixed casing. This avoids turbulence in the separating compartments (32) and there is a reduction of the risks of clogging as a result of solid particles being present in the heavy phase.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
SGN-Societe General Pour les Techniques NouvellesTHE FRENCH REPUBLIC1

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Inventor Name Address # of filed Patents Total Citations
Dollfus, Jacques les Essarts, FR 5 39

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