H. Budman et al., CONTROL OF A NONADIABATIC PACKED-BED REACTOR UNDER PERIODIC-FLOW REVERSAL, Canadian journal of chemical engineering, 74(5), 1996, pp. 751-759
A full parametric study of the open-loop behavior of a packed bed reac
tor-recuperator system operating under periodic flow reversal produced
a series of parametric maps which slow regions of operating condition
s for which the system exhibits runaway, stable operation or extinctio
n of the reaction. The reaction is CO oxidation over a Pt/alumina cata
lyst. A set of optimal operating conditions in terms of cycle time and
heat transfer coefficient can be directly extracted from the parametr
ic maps. A preliminary study on the control of periodic flow reversal
tested and compared two strategies. 1) feedback PID control of the exi
t CO concentration and 2) model based feedforward control.