Abstract:

From the point of view of operation and control，the problem of margin analysis and control design of FCC regenerator was solved through dynamic optimization. The mathematical description of dynamic optimization，including dynamic models of FCC reactor-regenerator and their control system，structure model of decentralized PID controllers，process uncertainty models，steady starting point restrictions，operation restrictions and objective functions was presented. It was a multi-objective mixed-integer dynamic optimization problem with constraints of 0-1 variables，and had two unrelated objective functions describing process economics and control performance respectively.

摘要：

从操作和控制的角度，通过动态优化的方法求解催化裂化装置再生器的工艺裕量与控制设计。该动态优化问题的数学描述包括催化裂化装置反应-再生系统和配套控制系统的动态模型、多回路PID控制器结构模型、过程不确定性模型、稳态起始点约束、生产要求和操作约束及目标函数等。该优化问题是一个带有0-1变量约束的多目标混合整数动态优化问题，具有分别描述控制性能指标和工艺指标的两个不相关目标函数。对两个优化目标进行折中处理，可以使设计结果既能满足工艺要求，又能实现良好的自动控制。