Abstract
The optimization and control problem of wet flue gas desulphurization in power plant was studied. Mixed logical dynamics model was built to describe hybrid phenomenon of the WFGD process. Based on the mixed logic dynamics model of WFGD, the predictive control optimization problem was solved using the Mixed Integer Quadratic program (MIQP) solver. Therefore the optimal discrete decision variable (the number of LG pump) and the continuous variable decision variable (PH set-point) were obtained on line. The real-time optimization was implemented. A MLD model of PH was also developed based on which the predictive controller of PH was designed. The simulation results indicate that the predictive control based on MLD model scheme presented has good effect.
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