October 2006

Special Report: Process Control and Information Systems

Dynamic real-time optimization increases ethylene plant profits

This project resulted in a $12.5 million/yr profit increase and one-month payback

Considering process dynamics in optimization pays off. These new technologies quickly push a plant to the optimum real-time economic performance, while integrating a plant's dynamic behavior and constraints to maintain fast optimization capability even during process transients. Borealis Polymers Oy reports annual benefits of $12.5 million for its 300,000 tpy ethylene plant in Finland and a new production record. Project payback period was one month. Closed-loop optimization of processing plants has been practiced with varying degrees of success and failure since the 1970s. The optimization projects of the ethylene plant in this article in the 1980s serve as typical examples.1 A profit fun

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