STUDY OF UNSTEADY-STATE CATALYTIC-OXIDATION OF SULFUR-DIOXIDE BY PERIODIC-FLOW REVERSAL

A systematic study of catalytic oxidation of sulfur dioxide in a fixed bed reactor operated in flow reversal mode was made. A heterogeneous transient model of the reactor was developed. The global rate equation s and the heat transfer parameter correlation were obtained, based on a series of previous experiments. The experiments of unsteady-state ox idation of low concentration SO2 were conducted in a bench-scale fixed bed reactor, packed with a domestic commercial catalyst. The model ca n successfully predict the transient concentration and temperature pro files when a correction factor is introduced to the global rate equati ons.