Reactive Distillation for Phenol Production Using Different Types of Zeolite Prepared from Rice Husk

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Author(s) Wadood T. Mohammed | Mohammed N. Abbas
Pages 435-451
Volume 3
Issue 8
Date August, 2014
Keywords phenol production, cumene hydroperoxide cleavage, zeolite, rice husk, RD simulation.
Abstract

Production of phenol from exothermic cleavage reaction of cumene hydroperoxide (CHP) was investigated by using reactive distillation technique in the presence of prepared zeolite catalysts from rice husk. Three types of catalysts have been prepared from Iraqi rice husk (IRH) as a source of silica, faujasite type Y – zeolite, β – zeolite and ZSM – 5 zeolite. They have been tested as catalyst in the reactive distillation for phenol production at different variables. These are, feed temperature (55 – 95 oC), liquid hourly space velocity (LHSV) (1 -5 h-1) and bed height (20 and 30 cm), keeping the reaction at atmospheric pressure. The results analysis shows that cumene hydroperoxide conversion was 100% while percent yield of phenol were 60.39, 57.02 and 46.42 for ZSM – 5, β – zeolite and Y – zeolite catalysts respectively. In the theoretical part, rate based or non-equilibrium (NEQ) mathematical model was developed taking into account the effect of mass and heat transfer in material and energy balances using MATLAB and FORTRUN simultaneously to solve Material Balance (M), Phase Equilibrium (E), Summation Equations (S), Energy Balance (H), and Reaction Rate Equation (R), i.e, MESHR. The results showed that this model gave fair agreement with the experimental study.

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