Scrubbing of gaseous fluorides from process exhausts

Details Scrubbing of gaseous fluorides from process exhausts Scrubbing of gaseous fluorides from process exhausts

B - Operations, Transporting

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D

B01D 53/34 (2006.01) B01D 53/68 (2006.01) B01J 20/02 (2006.01) C01B 9/08 (2006.01) C01F 7/44 (2006.01) C01F 7/50 (2006.01)

Patent

CA 2093340

2093340 9302772 PCTABS00019 A method of dry scrubbing process exhaust gases containing fluorides comprising bringing the fluoride containing gas into contact with particles of a material selected from aluminium hydroxide, rehydrated smelter grade alumina and/or partially calcined gibbsite, whereby the fluoride component of the exhaust gas chemically reacts with the particles to form aluminium fluoride, and collecting the aluminium fluoride particles for subsequent use.

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