A MATHEMATICAL-MODEL FOR COUPLED GAS-SOLID REACTIONS IN A REACTING GAS ATMOSPHERE

A mathematical model has been proposed for describing the coupled gas- solid reactions in a reacting gas atmosphere. Effects of the following five parameters on the conversions of solids B and D have been examin ed: reaction/diffusion ratio, Sherwood number, reactivity ratio, facto rs of catalytic activity and reactant amount ratio. The conversion of solid B was found to be able to be increased by reducing the pellet si ze, increasing the relative initial amount of solid 1) to solid B, or increasing the velocity of bulk gas.