liquid phase alkylation processes of aromatic hydrocarbons by β zeolite

摘要

A method of liquid-phase alkylation of aromatic hydrocarbon by conducting a liquid-phase reaction of an aromatic hydrocarbon with a C2-C4 olefin in a fixed-bed reactor packed with a β-zeolite catalyst at a temperature of 100-300 °C in a vapor-liquid descending parallel-flow system in the following trickle-bed zone: ?l.ul.{(σwater/σ)(?water/?l)?2}1/3(kgm-2s-1？) 20 and ?g.ug.{?air.?water/(?g.?l)}?1/2(kgm-2s-1？) 5 wherein ?l, ?g, ?air, and ?water (kgm-3) represent respectively the liquid density of aromatic hydrocarbon, the gas density of olefin, the gas density of air, and the liquid density of water; σ and σwater (Nm-1) represent respectively the surface tension of aromatic hydrocarbon and that of water; and ul and ug (ms-1) represent respectively the superficial velocity of aromatic hydrocarbon and that of olefin.