Industrial enterprise unorganized VOCs gridding monitoring, diffusion early warning and tracing method

Abstract

The invention relates to a gridding monitoring, diffusion early warning and tracing method for unorganized VOCs of an industrial enterprise. The method comprises the following steps: establishing a VOCs unorganized emission source list of the industrial enterprise; vOCs gridding monitoring stations are screened and arranged on the basis of a VOCs unorganized emission source list and local perennial meteorological conditions through a comprehensive rating method of functional region division and gridding point distribution; creating a VOCs management and control platform, displaying the grid VOCs emission level, time change trend and characteristics of the whole plant, and analyzing the total VOCs emission amount, high concentration value and occurrence time of the pollution map; through the optimized gas diffusion model and in combination with VOCs monitoring data of the whole plant, diffusion early warning analysis of VOCs pollution in the whole enterprise plant area is realized. And traceability analysis of VOCs pollution is realized through a source analysis technology. According to the invention, an integrated fine supervision mode of source combing, process monitoring and system management and control early warning of unorganized VOCs pollution of industrial enterprises is realized.

Description

technical field [0001] The invention belongs to the technical field of environmental monitoring, and in particular relates to a method for grid monitoring, diffusion early warning and source tracing of unorganized VOCs in industrial enterprises. Background technique [0002] There are many petrochemical and coal chemical enterprises in my country. While producing economic benefits, the emissions of volatile organic compounds (VOCs for short) are increasing day by day. In recent years, as the key precursor of PM2.5 and ozone, VOCs pollution prevention and control has been highly valued by the state. For petrochemical and chemical enterprises or industrial parks involving VOCs emissions, it is proposed to build a monitoring, early warning and monitoring system, and develop a grid Requirements for chemical monitoring and traceability analysis. [0003] VOCs-related chemical enterprises are the main source of VOCs emissions, and their VOCs pollutant emissions have the character...

AI Technical Summary

Problems solved by technology

In practical applications, due to comprehensive influence factors such as high-altitude emissions from pollution sources and long-distance transmission, if the monitoring module lacks relevance and effectiveness, it will not be able to achieve the goal of refined control

[0008] Chinese patent document CN 112540148 A discloses a method for building a monitoring, early warning and traceability system for air pollutants in refining and chemical enterprises. Traceability and early warning informatization platform construction, but the layout of monitoring stations in this method lacks the idea of ​​grid. The monitoring stations are divided into central station, node station and boundary station according to the relationship between functions and risk units. This method is affected by human subjective factors, and may As a result, the locations of monitoring sites are not representative and lack theoretical support; secondly, different monitoring sites use different monitoring equipment, and the different monitoring principles of different equipment may lead to inconsistent data

[0010] 1. The location of monitoring stations usually refers to the monitoring specifications and historical work experience of conventional pollutants. There are human subjective factors, and the monitoring points often have monitoring blind spots, which cannot ensure the reliability and representativeness of the points;

[0011] 2. Unorganized VOCs pollution is mostly intermittent emissions, which are easily affected by factors such as environmental meteorological conditions, terrain features, distribution of environmental sensitive points, and monitoring equipment, resulting in the monitoring network being unable to cope with instantaneous and sudden unorganized VOCs pollution. Happening;

[0012] 3. Regardless of whether it is factory boundary monitoring or unorganized monitoring in production equipment, it can only determine whether there is VOCs emission in the monitoring area, and the diffusion path of VOCs will change with time and space, and it is difficult to pass through the monitoring point. The concentration traces the leakage point of VOCs;

[0013] 4. The traceability method of the VOCs emission spectrum library established by chromatography or mass spectrometry can grasp the different VOCs characteristic pollutants at the outlets of each device in the whole plant, but the chemical transformation of VOCs is easily affected by environmental factors during the dissipation process. Moreover, there may be similar VOCs characteristic pollutants of different devices in the factory area, which cannot ensure the accuracy of traceability

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