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The stability, reliability and economy of water supply system directly affect the normal work and life of the users, and it also reflects the management level of the water supply system. According to the energy saving principle of the frequency conversion and energy saving of water supply system, the design scheme of the automatic control system of the… (More)
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… (More)