SUBLIMATION APPARATUS Russian patent published in 2000 - IPC

FIELD: processing of sublimable materials; sublimation-desublimation of uranium hexafluoride enriched with uranium-235. SUBSTANCE: proposed apparatus includes heat-insulated housing having sublimation chamber, heat-transfer agent chamber, coolant evaporator, ejector communicated with evaporator by means of ejecting gas manifold, heater, process gas and heat-transfer agent inlet and outlet branch pipes. Apparatus is equipped with at least two heat-exchanger tubes mounted in evaporator and at least two double-pipe heat exchangers arranged in sublimation chamber. Outlets if ejectors are communicated with respective heat-exchanger tubes connected in their turn with respective inner pipes of double-pipe heat exchangers whose outlets are communicated with cavity formed by housing and evaporator and connected with heat-transfer agent chamber by means of circulating pipes. Heater is mounted on sublimation chamber and ejecting gas collector is formed by cover of apparatus and transversal partition mounted in it. EFFECT: enhanced nuclear safety; enhanced economical efficiency. 2 cl, 5 dwg