September 2008

Special Report: Refining Developments

Integrating biofuels in refinery optimization models

Have a full economic representation without significantly increasing complexity

DePlaen, A., SynergOil S.P.R.L.

Representing biofuels efficiently in refinery optimization models is a new challenge to modelers, mainly due to the varying legislation options and the valorization of a virtual product, the biocertificate. This is even more complex because different national legislations are using different mechanisms across various countries, forcing different economic approaches. This article proposes a simple, yet efficient, way to model these biofuels to have a full economic representation without having to considerably increase complexity of the models. The "trick" is to build virtual process units pretreating biocomponents prior to blending, separating the biocertificate valorization from the physical

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