EFFECT OF RADIAL FLOW NONUNIFORMITY ON THE ALKYLATION REACTION IN A LIQUID-SOLID CIRCULATING FLUIDIZED-BED (LSCFB) REACTOR

A two-channel reaction model is proposed for reactions in the liquid-s olid circulating fluidized bed (LSCFB). With the two-channel flow mode l, the kinetics of benzene alkylation with dodecene over zeolite HY ca talyst, and the deactivation kinetics of the catalyst, the effects of the various operating parameters on the radial distributions of the re actant concentration and the catalyst activity and on the reaction con version in the liquid-solid riser reactor are investigated. The effect of temperature is also studied. The two-channel model is shown to pro vide a practical way to predict the effects of the various operating c onditions on the performance of the LSCFB reactor and to be helpful fo r the design of the LSCFB reactors.