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Heat exchanger group operation condition monitoring, cleaning and early warning method based on dynamic envelope line method

A technology of dynamic envelope and operating conditions, applied in the fields of instrumentation, forecasting, data processing, etc., can solve problems such as the lack of a complete system and method for monitoring the operating conditions and cleaning and early warning of heat exchanger groups in large petrochemical plants. , to achieve the effect of simple and reasonable evaluation procedure, stable data transmission and flexible configuration

Active Publication Date: 2020-04-10
CHINA PETROLEUM & CHEM CORP
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Problems solved by technology

So far, there is no complete system and method for the operation status monitoring and cleaning warning of heat exchanger groups in large petrochemical plants

Method used

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  • Heat exchanger group operation condition monitoring, cleaning and early warning method based on dynamic envelope line method
  • Heat exchanger group operation condition monitoring, cleaning and early warning method based on dynamic envelope line method
  • Heat exchanger group operation condition monitoring, cleaning and early warning method based on dynamic envelope line method

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Embodiment Construction

[0021] The method for monitoring, cleaning and early warning of the operation status of heat exchanger groups based on the dynamic envelope method of the present invention will be described in detail below in conjunction with the embodiments and the accompanying drawings.

[0022] The method for monitoring, cleaning and early warning of the operation status of the heat exchanger group based on the dynamic envelope method of the present invention is to use such as figure 1 and figure 2 The method shown is a real-time monitoring system for the heat exchange efficiency of large-scale petrochemical plant heat exchangers. The monitoring results of the operation status of the heat exchanger are mainly affected by two factors, system factors and random factors. During the operation of the heat exchanger, the present invention focuses on the stability and normality of the operation state. If the operation process If there is a large variable system influence factor or a large random...

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Abstract

A heat exchanger group operation state monitoring, cleaning and early warning method based on a dynamic envelope line method comprises the steps of establishing an in-service heat exchanger key evaluation standard, performing key evaluation on an in-service heat exchanger, and according to an evaluation result, performing operation state monitoring and cleaning prediction control on a heat exchanger group; selecting heat exchanger detection points, and installing integrated wireless temperature collectors on a tube pass inlet pipeline, a tube pass outlet pipeline, a shell pass inlet pipeline and a shell pass outlet pipeline of a selected heat exchanger; building a heat exchanger group operation state wireless monitoring system network; building an online monitoring system platform, and outputting a real-time dynamic oscillogram of the heat load, the heat transfer coefficient and the heat exchange efficiency of the heat exchanger; drawing a heat exchange efficiency trend value point diagram of the heat exchanger, and drawing a heat exchange efficiency dynamic envelope diagram on the diagram; and performing heat exchanger scaling condition analysis and heat exchanger cleaning early warning according to the heat exchanger heat exchange efficiency dynamic envelope diagram. According to the method, the operation condition of the heat exchanger can be monitored, and faults can be diagnosed in the early stage of scaling of the heat exchanger.

Description

technical field [0001] The invention relates to a method for monitoring the operating condition of a heat exchanger group and cleaning and early warning. In particular, it relates to a method for monitoring, cleaning and early warning of the operating condition of a heat exchanger group based on a dynamic envelope method. Background technique [0002] As a strategic and basic industry in my country, petrochemical industry has formed a complete industrial chain related to it, which has driven the development of a large number of industries and is closely related to the development of the national economy. At the same time, the petrochemical industry is also a high-energy-consuming industry, and any small improvement in the production process will bring huge economic benefits. Heat exchanger is one of the most commonly used equipment in petrochemical production. It is not only widely used to ensure the normal operation of a specific process, but also an important equipment fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q10/06G06Q50/02G06F30/20G06F119/08
CPCG06Q10/04G06Q10/0639G06Q50/02
Inventor 李春树黄卫东李涛孙全胜李洪涛郭拂娟王艳丽李梦瑶高丽岩张雅贤
Owner CHINA PETROLEUM & CHEM CORP
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