October 2007

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HP Control: Controlling the mundane naphtha stabilizer, Part 2

Part 1 of this editorial (September issue) discussed a debutanizer control strategy (Fig. 1). Given that feed composition varies with ambient conditions, one could argue that unless you have advanced ..

Friedman, Y. Z., Petrocontrol

Part 1 of this editorial (September issue) discussed a debutanizer control strategy (Fig. 1). Given that feed composition varies with ambient conditions, one could argue that unless you have advanced control with a more precise inference of C5 in LPG controlling rectifying section tray temperature is not a good idea.   Fig. 1    Control configuration for a stabilizer used to remove LPG from naphtha. I have further investigated this issue using data from a crude unit stabilizer and Petrocontrol's generalized distillation shortcut inferential package. The results are shown in Fig. 2

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