Design of natural gas desulfurization control system based on PLC

The purification process of natural gas mainly includes four main steps: desulfurization, dehydration, and sulfur recovery and tail gas treatment. In this paper, the process flow of natural gas desulfurization and purification system is described. The hardware system of PLC is used as control core, and the PLC program of lower computer is designed, and the software is used to complete the monitoring program. By monitoring the temperature, pressure and other parameters in the process, the system can be operated safely and reliably by the lower computer program driver and the upper computer screen monitoring.