Application of abnormal event detection technology to...

G - Physics – 05 – B

Patent

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G05B 13/02 (2006.01) G06F 17/50 (2006.01)

Patent

CA 2578520

The method for detecting an abnormal event for process units of a fluidized catalytic cracking unit, which uses modeling steps to compare the operation of the process units to a statistical model and to an engineering model. The statistical models are developed by principle components analysis of the normal operation of the units. The engineering models are based on partial least squares analysis and correlation analysis between variables. When the difference indicated between the operation of a process unit and the normal model result indicates an abnormal condition, then the cause of the abnormal condition is determined and corrected (1).

La présente invention concerne un procédé pour détecter un événement anormal pour des unités de traitement d'une unité de craquage catalytique fluidisée. Le procédé compare le fonctionnement des unités de traitement à des modèles statistiques ou à des modèles techniques. Les modèles statistiques sont développés par une analyse de composante principale du fonctionnement normal de ces unités. De plus, les modèles techniques se basent sur une analyse des moindres carrés partielle et une analyse de corrélation entre des variables. Si la différence entre le fonctionnement d'une unité de traitement et le résultat de modèle normal indique un état anormal, la cause de l'état anormal est alors déterminée et corrigée.

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