A fault diagnosis and early warning system for petroleum refining and chemical production process and its establishment method
A production process and fault diagnosis technology, applied in electrical testing/monitoring and other directions, can solve the problems of fault propagation and insufficient diagnostic accuracy in refining and chemical processes, and achieve strong fault propagation and fault traceability reasoning capabilities, high degree of correlation, and coupling. strong effect
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[0117] In this embodiment, the absorption stabilization unit of a catalytic cracking unit is taken as an example to introduce the specific implementation of the present invention. The process flow of the absorption stabilization unit is as follows: image 3 shown.
[0118] Step 1: Build a multistage flow model for absorbing stable units
[0119] Analyze the process characteristics of the absorption stabilization unit, determine the target of the unit and the functions of each equipment component, and establish the MFM of the absorption stabilization unit, such as Figure 4 shown. See Table 1 for the meanings of the corresponding symbols.
[0120] Table 1 Correspondence table of symbols and meanings in multistage flow model of absorption stabilization unit
[0121]
[0122]
[0123]
[0124] Step 2: Analyze the fault propagation path of the absorbing stable unit
[0125] According to the technological characteristics of the absorption stabilization unit and the logi...
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