Large Volume Inorganic Chemicals - Ammonia ... - ammk-rks.net

Chapter 44.4.21 Tail gas treatment: Sulfazide processDescriptionIn the sulfazide process, the tail gas is moistened with steam and passed through a reactorpacked with activated carbon. SO 2 , SO 3 and H 2 SO 4 are adsorbed and SO 2 oxidised by O 2 to SO 3 .The regeneration of the activated carbon with water yields a 20 – 25 % H 2 SO 4 , which can berecycled to the sulphuric acid plant.Achieved environmental benefits• SO 2 emissions are reduced by >90 %• beneficial effects on emissions of SO 3 /H 2 SO 4 mist are assumed.Cross-media effectsActivated carbon and energy consumption.Operational dataNo specific information provided.ApplicabilityGenerally applicable.EconomicsThe investment costs are estimated to be EUR 5500000.Driving force for implementationEmissions reduction.References to literature and example plants[57, Austrian UBA, 2001, 58, TAK-S, 2003], Kerr McGee, Krefeld (as tail gas treatment for apower plant)206 Large Volume Inorganic Chemicals – Ammonia, Acids and Fertilisers