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CC-00-143 PLAN FOR CLEAN FUEL SPECIFICATIONS WITH RIGOROUS MODELS

Paul R. Robinson, John M. Thiessen and Peter J. Hanratty Aspen Technology Inc. Houston, Texas and Dale R. Mudt and Clifford C. Pedersen Sunoco Inc. Sarnia, Ontario, Canada

Format:
Electronic (digital download/no shipping)

Associate Member, International Member, Petrochemical Member, Refining Member - $0.00
Government, NonMember - $25.00

Description:

Sunoco Inc. is implementing Refinery-Wide Optimization (RWO) in Sarnia, Ontario, Canada. The expected benefits from RWO include improved long-term production planning and feedstock selection. Models from the RWO initiative will also enhance Sunoco’s ability to plan for and comply with tighter regulations on sulfur in gasoline and diesel fuel. The RWO initiative employs open-equation models. Therefore, models for individual plants can be linked together. For example, the Plant 1 optimizer, which has been running online, closed- loop since July 1999, includes models for the crude distillation unit, the visbreaker, the kerosene HDS unit, the Houdriflow catalytic cracker (HCC) and its associated fractionation. A modified version of Aspen FCCTM was used to model the HCC unit. At the hydrocracking unit, a SARCRACK model has been running online, closed-loop since 1994. This model soon will be replaced by Aspen HydrocrackerTM. To illustrate how linked models can help refiners plan for clean fuel specifications, we connected rigorous hydrocracker and FCC models to form a single pretreater-plus-FCC model. The combined model can be used to quantify the non-linear aspects of FCC feed pretreating, including the effects of pretreater severity on the distribution of sulfur in the FCC products.

Product Details:

Product ID: CC-00-143
Publication Year: 2000