High surface area hydrated lime and methods

Details High surface area hydrated lime and methods High surface area hydrated lime and methods

C - Chemistry, Metallurgy

04

B

C04B 2/06 (2006.01) B01D 53/50 (2006.01) C01F 11/02 (2006.01)

Patent

CA 2087173

Hydrated lime having high surface area and small particle size is prepared by hydrating lime with an aqueous hydration solution of an organic solvent, and preferably washing the resulting hydrate with an aqueous solution of an organic solvent prior to drying. The high surface area hydrates of the invention are excellent sorbents for SO2 removal from gas streams.

On prépare de la chaux sulfatée hydratée présentant une grande superficie et une faible granulométrie par hydratation de chaux à l'aide d'une solution d'hydratation aqueuse d'un solvant organique, et de préférence par lavage de l'hydrate obtenu à l'aide d'une solution aqueuse d'un solvant organique avant de procéder au séchage. Les hydrates de grande superficie de l'invention sont d'excellents sorbants permettant l'élimination de SO2 de courants de gaz.

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