Abstract: As a part of the terminal gas system, CNG conventional filling station belongs to the high-risk equipment, and its safe and stable operation is highly valued. The whole process simulation of CNG conventional filling station is carried out by HYSYS software. The modeling process of key equipment and typical working conditions are introduced in detail. The whole process simulation is optimized according to the actual field parameters, which truly reflects the operation conditions of the station, and provides a reference basis and simulation operation platform for the stable operation and the optimization of energy saving of the gas station.

Key words: CNG conventional filling station, HYSYS simulation, flowmeter, compressor, logical operation