October 2011

Special Report: Process Control and Information Systems

Consider model-based inferential properties for reformers

A European refiner opts to apply embedded multivariable predictive controllers as part of an advanced process control system

Beautyman, A. C., AspenTech; Biroli, S., Autuori, A., Eni; Lodolo, S., Aspen Technology

Eni settled on using inferred properties models as part of a control and optimization application for two refineries on reformer units. Using improved rigorous models in operations would help achieving a more accurate and reliable control for the reformers. One solution identified was applying an open-loop advisory systems area and closed loop control and optimization area. In the present low-gasoline market, reformers must improve hydrogen (H2) supply and consumption. European refiners, often, operate reforms to balance gasoline or hydrogen production. Reformers can be operated in many different ways depending mainly on process type (continuous or semi-regenerative), market scenario and

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