화학공학소재연구정보센터
Applied Catalysis A: General, Vol.567, 45-55, 2018
Effect of the operating parameters on the simulation of acetylene hydrogenation reactor with catalyst deactivation
In the present study, the pseudo-homogeneous and heterogeneous models of fixed bed reactor using Pd - Ag/Al2O3 catalyst for acetylene hydrogenation were simulated. The high compatibility of both models with experimental data was obtained. The effect of operating conditions such as inlet temperature (302, 310 and 318 K), hydrogen/acetylene ratio (1, 1.4, 2 and 2.5), total pressure (15, 20 and 25 bar) and gas flow (270, 300 and 365 m(3)/h) was calculated on the conversion of acetylene and selectivity of ethylene. The obtained results revealed that the maximum conversion of acetylene was accomplished in an inlet temperature of 318 K, the hydrogen/acetylene ratio of 2.5, total pressure of 25 bar and the gas flow of 270 m(3)/h. The catalyst deactivation behavior was simulated as functions of time and temperature. To compensate the catalyst deactivation after 6 and 12 months, the effect of temperature enhancement on the acetylene conversion was investigated.