DESUBLIMATION DEVICE Russian patent published in 2008 - IPC B01D7/00 C01G43/06 

FIELD: technological processes; chemistry.

SUBSTANCE: during operation in desublimation mode cooling agent through nozzle 10 is supplied to lower annular element 9, where it is distributed along the whole element and through opening 15 comes to intermediate annular element 11. Having passed sequentially all annular elements 9, 11, 12, spent cooling agent exits through nozzle 13 from device. Technological gas, which is a mixture of uranium hexafluoride vapours and inertial gases, arrives through nozzle 19, distributes in the annular space in the top part of sublimation chamber 3, passes through gaps 17, 18 and is sequentially supplied into sublimation cells 21. Uranium hexafluoride, being desublimated, is deposited on cooled outer surfaces of annular elements 12, 11 and 9. Some uranium hexafluoride vapours due to volumetrical desublimation produce aerosols that are sublimated for the second time during contact with heated walls 5 and 6 and during passage of technological gas in gaps 17 and 18.

EFFECT: invention makes it possible to increase single capacity of device due to most developed surface of heat exchange.

2 cl, 2 dwg