September 2006

Columns

HP Control: What constitutes a real-time application?

I recently heard computer programs, mainly of the simulation variety, described as working in real time in service of the unit operators, inferring product properties and other unmeasured constraints ..

Friedman, Y. Z., Petrocontrol

I recently heard computer programs, mainly of the simulation variety, described as working in real time in service of the unit operators, inferring product properties and other unmeasured constraints minute-by-minute. I have heard this story from a number of different people, about predicting crude unit product properties, reformer octane and coke make, FCC product yields and properties, and numerous other units. Hang on, I would say, what do you mean by that? The simulation requires manual input of the unit feed and surely the operator would not have the ability to keep your program up-to-date minute-by-minute. Well, comes the answer, it is real time because it reads the unit control handle

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