Centrifugal contacting apparatus for solvent extraction

摘要

A single-stage centrifugal contacting unit for solvent extraction comprises a central rotor shaft 6 formed as a single integral piece together with the annular separation cup 7 of the contacting unit within which incoming liquid phases, mixed in chamber 9 for good transfer of components, arrive via duct 14 and are re-separated by centrifugal force into two phases separately expelled, by rotor-mounted blades defining impellers 17, 18, through liquid outlets, 29, 30. Shaft 6 has moreover an internal drain channel 27, 28 to the exterior, connected with the bottom of said cup 7. Drive means for a plurality of units connected in countercurrent liquid flow can be constituted by a support for the contacting units surrounding a single motor with a vertical shaft driving, by a gear wheel, a plurality of gear wheels mounted one on each motor shaft. IMAGE