ROTARY-ANNULAR EXTRACTOR Russian patent published in 2007 - IPC B01D11/04 

FIELD: chemical industry; other industries; production of the heat-exchange and mass-exchange apparatuses of the centrifugal type.

SUBSTANCE: the invention is pertaining to the designs of the heat-exchange and the mass-exchange apparatuses of the centrifugal type and may be used in the field of extraction and concentration of the impurities. The rotary-annular extractor contains: the drive gear, the body with the located in it mixing chamber, the rotor with the collectors for separation the phases, the unions for inlet and outlet of the phases and the impeller the device. The mixing chamber is made in the form of the rotating annular type chamber, the coaxially fixed on the body suction tubes with the central bush. The collector consists of two annular chambers coaxially fixed on the rotor and the shaft. The impeller device is manufactured of the hollow teeth or the plates fixed at an angle concerning axis of rotation of the rotor and located concerning the rotor and the body in the staggered order, on the internal surface of which the spiral plate is located. The rotor shaft is made hollow. The offered design allows to unify and intensify the extraction process, to vary the time of the contact and efficiency.

EFFECT: the invention ensures unification and intensification of the extraction process, the possibility to vary the time of the contact and productivity.

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