Method for cooling gases containing naf and hf

Details Method for cooling gases containing naf and hf Method for cooling gases containing naf and hf

F - Mech Eng,Light,Heat,Weapons

28

C

F28C 3/12 (2006.01) B01D 5/00 (2006.01) B09B 5/00 (2006.01) C01B 7/19 (2006.01)

Patent

CA 2114388

The present invention relates to a method for cooling HF and NaF containing gas from a pyrohydrolysis reactor for pyrohydrolysis of fluorine containing waste materials where the pyrohydrolysis is carried out at a temperature above 1000°C. After the outlet from the pyrohydrolysis reactor the gas is cooled by injecting into the gas a solid particulate material which is inert at the actual temperature in an amount sufficient to cool the gas to a temperature of maximum 1000°C, whereby NaF vapour contained in the gas condenses on the solid particles or in the gas phase nar the solid particles.

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