Extractor apparatus

Details Extractor apparatus Extractor apparatus

1986-01-06

1988-05-31

Wyse, Tom

Chemical apparatus and process disinfecting, deodorizing, preser

Physical type apparatus

Means separating or dissolving a material constituent

422257, B01D 1104

Patent

active

047480068

ABSTRACT:
The present invention is predicated on the discovery that emulsion prone zones generally occur in extractors at the end or region where feed is introduced and spent solvent is withdrawn. The build-up of feed droplets in this zone occurs because of slow coalescence rate, higher liquid loadings, lower interfacial tension, smaller density difference, and the like, in this zone. Accordingly, the present invention, in its simplest sense comprises a vertical extractor column having a settling zone located at one end of a mixing zone and having coalescence media located in the settling zone. Importantly, the coalescence media is positioned so as to promote the drainage of coalesced droplets to the side of the extractor where they drain back into the mixing zone. Preferably weir means are located in the settling zone between the coalescence media and the mixing zone for collecting coalesced droplets. A valve and conduit are provided for optional removal or cycling of at least some of coalesced droplets to a region in the mixing zone other than the emulsion prone zone therein.

REFERENCES:
patent: 4057224 (1977-11-01), Muller et al.
patent: 4588563 (1986-05-01), Fiocco
patent: 4634578 (1987-01-01), Fiocco

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