Challenges in the Feed Optimization

Due to the complexity of the FCC process and the presence of different interacting components of the flow stream, the optimization task to determine the amount of feed based on volumetric flow rate of each stream and their individual specific density is an extremely challenging task. The ideal values of these parameters are affected by the following factors  

With these factors in consideration, the feed optimization will 

Presently, the Honeywell DCS System adopts linear programming (LP) as the optimization tool for the initial setup of the controllers (Dantzig and Thapa, 1997 Foulds, 1981) before the main Onhne Distributed Control System takes over subsequently. Due to the nonlinearity of some of the flow characteristics and the constraints on the combination ratio, assumptions have to be made on certain parameters and factors for the LP model adopted. As a result, the accuracy of the results will be limited to the realism and practicality of the assumptions and models. 

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