The Kunii and Levenspiel model for a Bubbling Fluidised Bed reactor allow calculation of many of the key design parameters. The video below gives a brief introduction to this.
Different key parameters affecting the conversion in a BFB reactor, these parameters could be the bubble size ($d_b$), amount of catalyst used ($W$), superficial gas velocity ($u_0$), etc. Have a look at the calculator below (no graph) to investigate these parameters effect on the conversion of the BFB reactor.
First-order catalytic reaction of A → B with -r'''A = k'''CA in a BFB reactor.
Reactant gas (cA0 = 100 mol m-3) passes upward through a 2 m diameter fluidized bed
(εmf = 0.5, α = 0.33 and D = 20x10-6 m2 s-1) containing solid catalyst particles
(ρs = 2000 kg m-3).
Velocity of bubbles: ubr = m s-1 and ub = m s-1
Model validation: ub/uf =
Height of bed: HBFB = m
Conversion: xA = and cA = mol m-3