Concentrating evaporators – Film type – Centrifugal
Reexamination Certificate
2005-03-22
2005-03-22
Bhat, N. (Department: 1764)
Concentrating evaporators
Film type
Centrifugal
C202S175000, C202S182000, C202S218000
Reexamination Certificate
active
06869502
ABSTRACT:
A liquid having certain undesired elements therein is distilled in a distillation column to form a vapor stream. This vapor stream is fed by means of an inert gas drive to a first container having an array of semi-permeable screens which are rotated at a speed of 3,000-10,000 rpm to generate vertical spiral vortexes which act on the vapor to separate out heavier impurities. An inert gas is employed to drive the vapor stream from the first container to the bottom of a second container having a narrower diameter array of semi-permeable screens, these screens being driven at a velocity of 6000-100,000 rpm. In the second container, the molecular species is separated from the main vapor stream by virtue of the exposure of the vapor to large centrifugal gravity forces generated by the horizontal velocity vectors of the rotating screens. The more volatile first fraction of vapor exits the column to a condenser where it is transformed to liquid form and provides the output of the system while the second less volatile fraction of the vapor is fed to the bottom of the array from where it is exited.
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Bhat N.
General Grinding Corporation
Sokolski Edward A.
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