Oxidation Rate of Sodium Sulfite in Presence of Inhibitors

Sulfur dioxide released by small scale industrial boilers has become the focus of environmental problems in the future. Sodium alkali desulphurization is a promising method, in which sulfite oxidation is of great importance. In the present work, Effect of several inhibitors on the oxidation rate of sodium sulfite was compared in a gas-liquid reactor. The results indicate that PT, a novel and nontoxic additive, is effective. The oxidation kinetics of sodium sulfite inhibited by PT was investigated by experiments. The reaction order of all reactants and activation energy were achieved, which provide the theoretical proof and practical reference for the recycling of the byproduct in sodium desulphurization process.