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.