Kinetic investigation and mathematical modeling of oscillation regimes foroxidative dehydrogenation of butene-1

The investigation included the elaboration of the transient kinetic model o f oxidative dehydrogenation of butene-l to butadiene at Sb-Sn oxide catalys t on the basis of the experimental data and the mathematical modeling of th is processes in non-stationary regimes under periodical cycling of initial reagents concentrations. The influence of residence time, amplitude and dur ation of periodic cycles, ratio of reagents concentrations within the cycle on the process parameters was numerically studied. It has been shown that process performance in unsteady state under forced oscillation of reagents concentration significantly increases the overall yield of butadiene in com parison with the steady-state one. The benefits of the nonstationary proces s may be realized under technologically acceptable values of process parame ters. (C) 1999 Elsevier Science Ltd. All rights reserved.