Monitoring and cleaning early warning method of heat exchanger group operating condition based on dynamic envelope method

Abstract

A method for monitoring, cleaning and early warning of the operating conditions of heat exchanger groups based on the dynamic envelope method: establishes the critical evaluation criteria of in-service heat exchangers, conducts critical evaluations on in-service heat exchangers, Group operation status monitoring and cleaning prediction control; select heat exchanger detection points, install integrated wireless temperature collectors on the tube-side inlet and outlet pipes and shell-side inlet and outlet pipes of the selected heat exchangers; build heat exchanger groups Wireless monitoring system network for operating conditions; build an online monitoring system platform, and output real-time dynamic waveforms of heat load, heat transfer coefficient and heat transfer efficiency of the heat exchanger; draw a point graph of the heat exchange efficiency trend value of the heat exchanger, in this figure The dynamic envelope diagram of heat exchange efficiency is drawn on the top; according to the dynamic envelope diagram of heat exchange efficiency of heat exchanger, the fouling condition analysis of heat exchanger and the early warning of heat exchanger cleaning are carried out. The invention can monitor the operation condition of the heat exchanger, and can diagnose the occurrence of faults in the early stage when the heat exchanger is fouled.

Description

technical field [0001] The invention relates to a method for monitoring and cleaning early warning of the operation condition of a heat exchanger group. In particular, it relates to a method for monitoring, cleaning and early warning of the operating conditions of heat exchanger groups based on the 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 equipment to ensure the normal operation of specific technological processes, but also ...

AI Technical Summary

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

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