Models Refinery-Wide Optimization

REFINERY-WIDE OPTIMIZATION WITH RIGOROUS MODELS... 

Refinery- Wide Optimization with Rigorous Models 259... 

Refinery-Wide Optimization -with Rigorous Models... 

Mudt, D. R. Pedersen, C. C. Jett, M. D. Karur, S. McIntyre, B. Robinson, P. R. Refinery-wide Optimization with Rigorous Models, In Practical Advances in Petroleum Processing, Hsu, C. S. Robinson, P. R. (Eds.), Springer ... 

Some recent applications have benefited from advances in computing and computational techniques. Steady-state simulation is being used off-line for process analysis, design, and retrofit process simulators can model flow sheets with up to about a million equations by employing nested procedures. Other applications have resulted in great economic benefits these include on-line real-time optimization models for data reconciliation and parameter estimation followed by optimal adjustment of operating conditions. Models of up to 500,000 variables have been used on a refinery-wide basis. 

As discussed in Chapter 22, model-predictive control (MPC) and real-time optimization (RTO) can improve the profitability of a major conversion unit by 5 to 10%. Refinery-wide, benefits from MPC and RTO can exceed US 0.40 per barrel, or US30 million per year for a high-conversion 200,000 b/d refinery. 

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