Process and apparatus for fractional desublimation of vapor-phas

Details Process and apparatus for fractional desublimation of vapor-phas Process and apparatus for fractional desublimation of vapor-phas

1987-02-09

1988-09-27

Capossela, Ronald C.

Refrigeration

Processes

Circulating external gas

55 82, 55269, F25J 500

Patent

active

047739231

ABSTRACT:
For the non-clogging, fractional desublimation of vapor-phase solids contained in a gas-vapor mixture, the gas-vapor mixture, exiting at high velocity from a nozzle, is mixed with a cooling gas, likewise exiting at high velocity from another nozzle. The gas-vapor mixture and the cooling gas flow toward each other, the axes of the two gaseous streams being a straight line. Fractional desublimation of the solids is attained by adjustment of flows leading to the regulation of the temperature and residence time of the cooled gas-vapor mixture. This desublimation system is capable of degrees of efficiency and solids purities higher than 99%.

REFERENCES:
patent: 4080182 (1978-03-01), Vitovec et al.
patent: 4181508 (1980-01-01), Schmid et al.
patent: 4281518 (1981-08-01), Muller et al.
patent: 4528006 (1985-07-01), Vitovec et al.

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