## Project Background
The project, with an annual production capacity of 1 million tons of ethylene and 2 million tons of derivatives, is located within a straight-line distance of 2.5 kilometers from residential areas. The local ecological and environmental department requires the installation of a continuous VOCs monitoring system, which should automatically trace the source of emissions exceeding the threshold and be integrated into the emission permit platform.
## Implementation Plan
Along the 8km perimeter of the factory boundary, 36 sets of Panshi P300 explosion-proof VOCs online monitors are deployed at a spacing of 200m each. Combined with wind direction and speed data collected by the meteorological station, a 24-hour uninterrupted “environment-to-factory” bidirectional traceability system is established.
– All devices are connected to the Modbus TCP and the private network directly linked to the Ecological Environment Bureau of the park
– Automatically compare the upwind/downwind difference in the factory area every 5 minutes, and trigger an alarm automatically if it exceeds 0.5mg/m³
– The AI algorithm predicts the diffusion range and risk level based on historical data
## Implementation Effect
In the six months since its launch, the system has issued a total of seven alerts (including three that detected process leaks over 40 minutes in advance), assisting on-site timely response and avoiding penalties. The annual assessment earned the system the title of “VOCs Boundary Monitoring Demonstration Enterprise” from the Ministry of Ecology and Environment.
