Bed carbon loadings in fluid bed combustion

Measurement of mass transfer between the bubble and dense phases in a fluidized bed combustor

“…Recent studies [25][26][27][28] show that the oxidation of CO occurs either inside the ascending bubbles or at the top of the fluidized bed; according to Hayhurst [28] this reaction does not normally occur in the dense phase, because it is quenched by free radicals recombining on the inert particles, if the bed is below about 1173 K. As there is oxygen consumption inside the bubbles, the model described above must be reanalyzed. This is done in Appendix I, considering that the oxidation of all the CO takes place inside the bubbles; the resulting equation is: …”

Heat transfer and combustion in a two-bed fluidized combustor

“…• The char reacts to form carbon monoxide (CO); the CO does not further react in the particle boundary layer or emulsion phase [18,19].…”