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Fault diagnosis and pre-warning system in oil refining production process and establishment method thereof

A production process and fault diagnosis technology, applied in electrical testing/monitoring, etc., can solve problems such as 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

Active Publication Date: 2014-12-24
CHINA UNIV OF PETROLEUM (BEIJING) +1
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Problems solved by technology

[0008] The main purpose of the embodiment of the present invention is to provide a fault diagnosis and early warning system for petroleum refining and chemical production process and its establishment method, so as to solve the problem that the existing fault diagnosis method has insufficient fault propagation and diagnostic accuracy in the refining process

Method used

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  • Fault diagnosis and pre-warning system in oil refining production process and establishment method thereof
  • Fault diagnosis and pre-warning system in oil refining production process and establishment method thereof
  • Fault diagnosis and pre-warning system in oil refining production process and establishment method thereof

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Embodiment 1

[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 lo...

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Abstract

The invention provides a fault diagnosis and pre-warning system in the oil refining production process and an establishment method of the fault diagnosis and pre-warning system. The method comprises the steps of establishing a multilevel flow model in the oil refining production process, determining a fault propagation path, conducting hazard and operability (HAZOP) analysis on the oil refining production process, determining a plurality of static nodes and a plurality of dynamic nodes, determining the connected relation of the static nodes and the dynamic nodes, establishing at least one alternative model, adopting the dynamic Bayesian network structure scoring mechanism for scoring of the alternative models, determining the alternative model with the highest score as a fault multilevel related model, determining the conditional probability relation between the static nodes and the dynamic nodes in the fault multilevel related model, and establishing a fault diagnosis and pre-warning module. The established fault multilevel related model and the fault diagnosis and pre-warning module have the higher fault propagation and fault tracing and reasoning capability, and accurate diagnosis and timely warning of faults generated in the oil refining production process can be achieved.

Description

technical field [0001] The invention relates to the technical field of fault intelligent diagnosis, in particular to a fault diagnosis and early warning system and an establishment method thereof in a petroleum refining and chemical production process. Background technique [0002] Petroleum refining and chemical production is a typical process industry. The production equipment is composed of static equipment, dynamic equipment, electrical equipment, instrumentation and process pipelines. The layout is compact, forming a fully functional production system; The quantity of explosive substances and production equipment is large, the risk of accident is high, and the safety production control is difficult. At the same time, the petroleum refining process has the characteristics of flammability and explosion, severe corrosion, high toxicity, high temperature and high pressure, and strong production continuity. The operation status of the refining unit will directly affect the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B23/02
Inventor 胡瑾秋张来斌蔡战胜王宇王安琪
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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