Gas-solid bubbling beds embrace complexity coupled by flow

heat/mass transfer and reactions over a wide range of spatial-temporal scales

which meso-scale flow structure

e.g.

bubble

plays a critical role on gas-solid transfer. It is necessary to build meso-scale model on the basis of reasonable physical simplification of real processes

for accurate interpretation of heat/mass/momentum transfer and reaction in gas-solid flow systems. A multi-fluid reaction model from bubble structures was proposed with a consideration of effects of non-uniform meso-scale structure on gas-solid reaction in bubbling bed. Further

the mass transfer and reaction model in the two fluid model (TFM) was modified by a defined heterogeneity reaction index

which made the model easier to use. Model was validated through simulation of ozone catalytic decomposition in bubbling bed

showing good agreement with literature data.