Fluidized bed reactor is promising for CO methanation owing to its
excellent heat transfer performance. The gas flow distribution between
the bubble phase and emulsion phase, and the characteristics of heat
removal are important for such a solid-catalyzed exothermal reaction in
fluidized bed but these are described simplistically in most
conventional models. In this work, a novel model contemplating the gas
flow distribution influenced by circulation flow and the effect of
particle flow on reaction heat removal is proposed. The simulation
results of the proposed model and the classic Kunii--Levenspiel model
were compared with experimental data of fluidized bed CO methanation. It
was shown that the results of the proposed model have better agreement
with experimental data. Finally, the investigation for the effect of
particle flow was carried out and the results indicated that the
particle flow is important to the reaction heat removal.