An on-line monitoring method for leakage of petrochemical water cooler

Abstract

An on-line monitoring method of petrochemical water cooler leakage comprises the following steps that: firstly, a monitoring network which includes a sampling system, a monitoring station, an engineer station and an operator station is established and the sampling system is installed on a circulating water return water pipeline of the water cooler to be monitored; then one or more kinds of an ultraviolet spectrometry monitor, an ultraviolet fluorescence monitor, a fiber monitor and a near infrared monitor is selected to monitor on-line organic matter concentration changes in water according to types of cooling mediums of the water cooler; the engineer station determines the type of leakage medium in the pipeline according to monitoring data and a monitoring scope; the operator station determines the type of the water cooler which occurs leakage and preliminarily determines an area where the leakage water cooler locates according to the types of the leakage medium; finally, a portable monitor is used to search the water cooler which occurs leakage in the leakage area. By using the method, a plurality of monitors and the portable monitor can be used to rapidly determine the leakage water cooler so that potential safety hazard can be eliminated timely. Time for searching leakage points during major repairing can be saved and work loads can be effectively reduced.

Description

technical field [0001] The invention relates to an on-line monitoring system and a monitoring method for the leakage of a petrochemical water cooler. Background technique [0002] Leakage of water coolers is a common problem in domestic petrochemical enterprises due to device aging, maintenance quality, seal damage, and operational fluctuations. The leakage of the water cooler will cause the following problems: ① lead to water pollution and increase the cost of sewage treatment. If it is not found in time, it is necessary to replace a large amount of fresh water and add a large amount of antiseptic, bactericidal and other chemicals. The circulating water system needs one month or even several months. In order to gradually stabilize and seriously affect the normal production work; ② bring serious safety hazards to production, if an accident occurs, it will cause huge economic losses; It is difficult to find out the location of the leakage by measuring the concentration of oi...

AI Technical Summary

Problems solved by technology

The leakage of the water cooler will cause the following problems: ① lead to water pollution and increase the cost of sewage treatment. If it is not found in time, it is necessary to replace a large amount of fresh water and add a large amount of antiseptic, bactericidal and other chemicals. The circulating water system needs one month or even several months. In order to gradually stabilize and seriously affect the normal production work; ② bring serious safety hazards to production, if an accident occurs, it will cause huge economic losses; It is difficult to find the location of the leakage by measuring the concentration of oil in the water at the inlet and outlet of the circulating water, and it takes a lot of manpower and time to check one by one

[0013] Among the above methods, UV spectrometry, UV fluorescence method, near-infrared method and optical fiber method can be used for on-line monitoring, but these technologies are rarely used in domestic petrochemical enterprises.

The reason is: the composition of organic pollutants is mixed due to the leakage of the water cooler, including different types of oil from different heat exchangers, artificially added various water treatment agents and interference substances, etc., plus the influence of complex backgrounds such as water quality color and particles , no online instrument can solve all the problems, and it is also greatly affected by the actual working conditions, which makes it more difficult to detect the leakage of the water cooler

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