Application of abnormal event detection technology to hydrocracking units
First Claim
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1. A method for abnormal event detection (AED) for some of process units of a hydrocracker unit of a petroleum refinery comprised of:
- (a) comparing online measurements from the process unit to a set of models for normal operation of the corresponding process units, (b) determining if the current operation differs from expected normal operations so as to indicate the presence of an abnormal condition in a process unit, (c) assisting the process operator to determine the underlying cause of an abnormal condition in the HDC process unit, and (d) performing corrective action to return the unit to normal operation.
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Abstract
The present invention is a method for detecting an abnormal event for process units of a hydrocracking unit. The method compares the operation of the process units to a model developed by principle components analysis of normal operation for these units. If the difference between the operation of a process unit and the normal operation indicates an abnormal condition, then the cause of the abnormal condition is determined and corrected.
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39 Claims
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1. A method for abnormal event detection (AED) for some of process units of a hydrocracker unit of a petroleum refinery comprised of:
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(a) comparing online measurements from the process unit to a set of models for normal operation of the corresponding process units, (b) determining if the current operation differs from expected normal operations so as to indicate the presence of an abnormal condition in a process unit, (c) assisting the process operator to determine the underlying cause of an abnormal condition in the HDC process unit, and (d) performing corrective action to return the unit to normal operation. - View Dependent Claims (2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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7. The method of 6 wherein set of models of normal operations includes engineering models.
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24. A system for abnormal event detection (AED) for some of the hydrocracker process units of a petroleum refinery comprised of:
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(a) a set of models for the process units describing operations of the process units, (b) a display which indicates if the current operation differs from expected normal operations so as to indicate the presence of an abnormal condition in the process unit, (c) a display which indicates the underlying cause of an abnormal condition in the HDC process unit. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
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Specification