Axial distribution of reactivity inside a fluid‐bed contactor

Abstract

Abstract The axial destribution of reactivity inside a fluid‐bed contactor is studied for the hydrogenation of ethylene. The reactivity is large near the surface of the dense phase. The significant effect of the dilute phase, or the free board region, is verified experimentally, and the contact efficiency in the transition zone and in the dilute phase is obtained. The contact efficiency was approximated by η c = 1 − 0.75 (ϵ e /ϵ ede ) 0.4 . The temperature rise in the dilute phase is measured in the small reactor. The transition zone between the dense and dilute phases is almost isothermal, but it is found that temperature increases in the dilute phase.