PROCESS FOR PRODUCING AMMONIA AND SULFUR DIOXIDE

摘要

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 .degree.C to form NH3, water and a metal sulfate and recovering 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.