Temperature Control in Autothermal Reforming Reactor

摘要

Temperature control of an autothermal methanol reforming reactor which uses the copper-zinc oxide catalyst was studied.Temperature at 1cm below the hot-spot point in the reactor was used for the controlled variable,and the air flow rate was used for the manipulated variable.A first order plus time delay model was identified and controller parameters were obtained by applying the PMC-PI tuning rule to the identified model.With this controller,we could control the reforming reactor temperature within +- 5 °C over 100 hours.Change of the hot-spot point due to the catalyst degradation was investigated and it could be used to design an adaptive controller.