Design And Application Of The Flue Gas Desulfurization Control System

According to the characteristics of strong coupling and Multiple variables for wet limestone-gypsum flue gas desulfurization technology, wet flue gas desulfurization control system was designed in this article, relying on the flue gas desulfurization project in Gaojing thermal power plant and analyzing wet desulfurization equipment composition and process.First of all, present situation, Development trend, the main process equipment, Process and principle were introduced briefly. Secondly, desulfurization control system was designed from Control system selection, control mode and control room layout, thermal automation level and function, power and gas source supply of control system and other aspects. Then, control scheme of desulfurization control system were designed and researched, mainly including Automatic control system design, Interlock protection design and the important condition of sequence control design aspects. Finally, desulfurization of important instrument were selected and designed, and problems and solutions were pointed out during the debugging and operation.