Master curve behaviour in superheated steam drying of small porous particles

A lump drying model was developed for superheated steam drying of porous particles. Using single particle drying data [1], a unique master curve drying characteristic was obtained for porous ceramic particles dried under different degree of superheating and relative velocities. Further analysis revealed that the mass transfer depression phenomenon is significant under such superheating condition, typically used in drying processes. This highlights the precaution required in the case of future model development. This approach can potentially be a versatile approach in modelling the drying of porous particles, such as brown coal, under superheated steam condition.