URANIUM HEXAFLUORIDE OBTAINING METHOD Russian patent published in 2010 - IPC C01G43/06 

FIELD: power industry.

SUBSTANCE: invention can be used in nuclear power industry. Uranium hexafluoride is obtained by fluor treatment of uranium-containing compounds in flame reactor. Process gas leaving the reactor is cooled in heat exchanger by alternate-intermittent feed of cooling agents to sections of tubular heat exchanger so that some sections operate in mode of uranium hexafluoride desublimation on its walls with further distillation, and the rest sections - in the mode excluding uranium hexafluoride desublimation. Cooling agent is supplied with temperature of 5-20 °C during 5-15 minutes to pipe heater sections operating in desublimation mode; after that supply of cooling agent is stopped. When temperature of cooling agent in sections is 60-65 °C, supply of cooling agent with temperature of 65-75 °C is open by switching over those sections to the mode excluding uranium hexafluoride desublimation.

EFFECT: increasing efficiency of flame reactor, increasing service life of filtering elements and heat exchanger, improving uranium hexafluoride quality and improving working conditions of service personnel.

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