We apply a robust steady state optimization method for stiff delay differential equations to the economic optimization of a fluidized catalytic cracking unit. Stiff systems of differential equations appear in this case due to the different time scales in the gas and fluid phase. Delays result from the catalyst hold-ups in the standpipes connecting riser and regenerator. We show that the proposed robust optimization method can cope with stiffness and delays. Moreover, the proposed method is capable of simultaneously optimizing the process parameters and tuning controller parameters.

中文翻译：

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刚性延迟系统的稳健优化：应用于流化催化裂化装置

我们将刚性延迟微分方程的稳健稳态优化方法应用于流化催化裂化装置的经济优化。由于气相和液相的时间尺度不同，在这种情况下会出现刚性微分方程组。延迟是由连接提升管和再生器的立管中的催化剂滞留造成的。我们表明，所提出的鲁棒优化方法可以应对刚度和延迟。此外，所提出的方法能够同时优化工艺参数和调整控制器参数。