LPT-2003-01 [BibTeX]
Heiko Briesen, Wolfgang Marquardt:
A real-time optimization strategy for petroleum processes with successive adaptive model refinement
In: I. E. Grossmann, C. M. McDonald (Eds.): FOCAPO 2003 (Fourth International Conference on Foundations of Computer-Aided Process Operations), Coral Springs, Florida, 431-434
Abstract:
To enhance models for refinery processes it seems inevitable to
increase the level of compositional detail to a much higher level
than today. In previous work, we have developed a simulation
technique for steady-state simulation, which pays respect to the
particularities of this type of detailed composition models.
With this new technique, it seems to be possible to significantly
lower the computation time for obtaining high-resolution results.
This work deals with the extension of our previous work to
optimization problems. Using an adaptive composition representation
in combination with a multigrid optimization strategy, the time
span for the optimization of petroleum processes can significantly
be lowered. The large potential of this approach for the
implementation in real-time optimization schemes is illustrated by
investigating a simple flash problem. It can be shown that the
reduced dead time in which the process runs off the optimum operating
points, yield a large economical potential.
Keywords:
Adaptivity, Multigrid, Real-time optimization, Petroleum processes, Model reduction.