Sulfuric acid purification process

Details Sulfuric acid purification process Sulfuric acid purification process

C - Chemistry, Metallurgy

01

B

C01B 17/90 (2006.01) C01B 17/92 (2006.01) C07C 2/54 (2006.01)

Patent

CA 2285418

A process for purifying an aqueous sulfuric acid solution includes cooling an aqueous sulfuric acid solution to at or near its freezing point to form a slurry of a solid phase and a liquid phase. The slurry has an acid-rich region and an acid-poor region. The acid-rich region is separated from the acid-poor region on the basis of density.

L'invention porte sur un procédé de purification d'une solution aqueuse d'acide sulfurique consistant à refroidir une telle solution jusqu'à son point de congélation de manière à former une bouillie comportant une phase solide et une phase liquide et présentant une zone riche en acide et une zone pauvre en acide, lesdites zones étant séparées en fonction de leur densité.

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