Process for producing ammonia and sulfur dioxide

Details Process for producing ammonia and sulfur dioxide Process for producing ammonia and sulfur dioxide

C - Chemistry, Metallurgy

01

B

23/122, 23/217

C01B 17/50 (2006.01) C01B 17/60 (2006.01) C01C 1/02 (2006.01)

Patent

CA 1335690

A process for producing NH3 and SO2 from ammonium sulfate, which comprises (i) reacting ammonium sulfate with a metal oxide or hydroxide at a temperature of not more than 200 °C to form NH3, water and a metal sulfate and recover- ing NH3, (ii) decomposing the metal sulfate in the presence of a reducing agent to form a metal oxide and SO2 and recovering SO2, and (iii) recycling the metal oxide to step (i) as such or after it is converted to a metal hydroxide.

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