PROCESS FOR CONVERTING AMMONIUM IMIDODISULPHATE AMMONIUM SULPHAMATE AND AMMONIUM DITHIONATE TO SULPHUR DIOXIDE AND AMMONIA

摘要

Ammonium imidodisulfate and ammonium sulfamate may be converted to sulfur dioxide and ammonia by heating them with a reducing agent or a catalyst in a bath of molten ammonium sulfate and ammonium bisulfate. The reducing agent is sulfur or a sulfur compound and the catalyst is selected from Mo, W, Cu, Fe, Co, Cr, Mn and Ni.