Patent ID: 8010292

Claim:
A computer implanted method of facilitating detection of an abnormal operation of a hydrocracker, using a computer having a non-transitory computer-readable storage medium having a computer executable instructions stored in the non-transitory computer-readable storage medium for implementing the method, the method comprising: collecting first data sets generated from a temperature difference variable between a first cross section in a reactor of the hydrocracker and a second cross section in the reactor of the hydrocracker while the hydrocracker is in a first operating region and generated from a load variable of the hydrocracker while the hydrocracker is in the first operating region; generating a first regression model of the process in the first operating region using the first data sets; determining a first range in which the first regression model is valid; generating a model of the hydrocracker to include the first regression model; collecting second data sets generated from the temperature difference variable between the first cross section in a reactor of the hydrocracker and the second cross section in the reactor of the hydrocracker while the hydrocracker is in a second operating region and generated from a load variable of the hydrocracker while the hydrocracker is in the second operating region; generating a second regression model of the hydrocracker in the second operating region using the second data sets; determining a second range in which the second regression model is valid; and revising the model of the hydrocracker to include the first regression model for the first range and the second regression model for the second range.