1、 Project Background

withThe tightening of national environmental policies and the deepening of precise VOCs control have posed strict regulatory challenges to a large chemical park. The concentration of enterprises and complex production processes in the park have led to prominent emissions of VOCs (with a focus on non methane total hydrocarbons), which have become the core cause affecting regional air quality. It is urgent to establish a system that meets the requirements ofcountryStandard continuous monitoring system.

2、 Customer pain points

existRegulatory blind spotsTraditional manual inspections and intermittent sampling are difficult to achieve 24-hour continuous monitoring, resulting in regulatory gaps and inability to effectively capture instantaneous high concentration pollutionemission.

Insufficient data credibilityStandard monitoring methods need to be adopted to ensure the accuracy, reliability, and comparability of data, providing strong basis for decision-making.

Prominent security risksChemical industrial parks belong to explosive hazardous environments, and ordinary monitoring equipment has safety hazards. Professional equipment that meets national explosion-proof standards must be used.

High operation and maintenance costsMonitoring stations are mostly in unmanned mode, requiring equipment with high stability, self diagnosis, and remote management capabilities to reduce operation and maintenance costs and difficulties.

3、 Solution

（one）Core system composition

Core analyzer：Using gas chromatographylawEnvironmental Air Non Methane Total Hydrocarbon Analyzer Combined with Hydrogen Flame Ionization Detector (FID)，It has the characteristics of low detection limit, fast response speed, and high analysis accuracy, and can accurately distinguish and measure total hydrocarbons and methane hydrocarbons, thereby accurately obtaining the concentration value of non methane total hydrocarbons.

（two）Securityprotectionunit

Explosion proof outdoor cabinet: provides a sturdy, sealed, and explosion-proof solution for core equipment such as analyzers and data collectorsshellEffectively prevent internal electrical components from becoming ignition sources, ensuring safe operation in hazardous environments.

Explosion proof air conditioner: Built in cabinet provides a constant temperature and humidity working environment for internal equipment, ensuring that the analyzer can maintain its operating status and measurement accuracy even in adverse weather conditions.

Safe operation component: equipped with explosion-proof keyboard to achieve localized safe operation；Equipped with sound and light alarm device，When detectedNon-Methane Total Hydrocarbons (NMTHC)When the concentration exceeds the preset threshold, an immediate warning is triggered to remind park management personnel and surrounding personnel to pay attention and achieve rapid response.

（three）Data Quality Control and Support Unit

Dynamic calibrator: used for regular automatic or manual zero and range calibration of analyzers, and providing accurate standard gas to the system. It is a key equipment to ensure long-term accuracy and comparability of data.

Hydrogen Generator: Provides a continuous, stable, and high-purity hydrogen source and auxiliary gas for FID detectors, replacing traditional high-pressure steel cylinders with higher safety and lower operating costs, achieving long-term stable gas supply without human supervision.

4、 Project implementation and effectiveness

（one）project implementation

The Zhiyi Era technology team selected points in the downwind and sensitive areas of the park, completed the construction of the station building, and integrated, installed, and debugged the entire system. The system seamlessly uploads real-time monitoring data, device status information, alarm records, etc. to the park's environmental monitoring center through 4G/5G networksplatform.

（two）Project Results

supervisionGlobal coverageRealize 24-hour continuous and automatic monitoring of the ambient air in the park,effectiveEliminating regulatory blind spots and capturing abnormal emission events.

High reliability of data: Adopting the FID international standard method, the data is accurate and reliable, providing a solid scientific basis for environmental enterprise pollution accounting and park planning.

Safer and more reliable: a complete set of explosion-proof design,Reduce safety hazards,The system has maintained safe and stable operation since its commissioning.

Efficient and convenient operation and maintenance: The system has remote diagnosis, calibration, and maintenance functions. Combined with the use of hydrogen generators, it significantly reduces the frequency and intensity of on-site operation and maintenance, and lowers the overall lifecycle cost.

Accurate traceability and rapid response: When the alarm light is triggered, the monitoring center can immediately lock in the area exceeding the standard, quickly trace the source based on wind direction, enterprise production and other information, and dispatch personnel for disposal, greatly improving the initiative and accuracy of environmental management in the parksex.