Vocs Accident Risk Monitoring And Early Warning System For Chemical Parks

In recent years,VOCs(volatile organic compounds)accident risk has become a national focus,chemical park is one of the main sources of VOCs accident risk in our country,the abnormal emissions and leakage of VOCs in park threaten enterprise production and will also cause air pollution,sudden explosion and other risk accidents.The existing chemical park VOCs accident risk monitoring and early warning system mostly uses sensor monitoring to obtain monitoring data,analysis of the park environmental pollution status,not well to the accident risk point monitoring,early warning and traceability,can not timely and effective prevention of VOCs accident risk.In order to strengthen the effective supervision of the risk points of the chemical industry park,reduce the risk of accidents,while responding to the national key governance VOCs requirements,this paper based on the research group of accident risk assessment and early warning related theories,Design and develop a set of VOCs accident risk monitoring and early warning system for chemical industry park,which integrates basic information management,accident risk assessment,accident risk monitoring,early warning and traceability functions.The specific results are as follows:(1)Research and design the visualization scheme of monitoring and early warning system according to the system requirements.Through the comparative analysis of WebGIS,D3,Echarts and other front-end visualization tools,the ArcGIS API for JavaScript and Echarts visualization technology suitable for this system are selected for the visualization of geographic information and front-end data.(2)Determination of accident risk assessment and traceability method.The entropy method and analytic hierarchy process were selected to assign the weight of the evaluation index from both subjective and objective aspects,and the fuzzy comprehensive evaluation method was used to evaluate the accident risk.The characteristics of three mainstream traceability methods,namely diffusion model method,traceability model method and emission inventory method,are compared and analyzed.The emission inventory method is used for the traceability analysis of accident risk points to identify possible risk points.(3)System function design and implementation.The system uses B/S architecture and Java language.Based on Vue,SpringBoot and Mybatis-plus frameworks,it designs and implements functions such as enterprise basic information management,accident risk assessment,accident risk monitoring,early warning and traceability.Four levels of accident risk assessment and monitoring and warning information,red(level Ⅰ),orange(level Ⅱ),yellow(level Ⅲ)and blue(level Ⅳ),are visualized in the form of a table.Echarts draws a broken line chart to realize the visual display of monitoring data.(4)System test.Through the development of a comprehensive test case to the system for functional testing,combined with the project application requirements for the system response speed,accuracy,safety of three aspects of non-functional testing,the results show that the operation is good,can meet the park managers for the chemical park VOCs accident risk monitoring and early warning needs.