The FGD system of the limestone-gypsum wet flue gas desulfurization unit has been proven to be an advanced desulfurization process with high desulfurization rate,high reliability and high cost performance.Currently,90％of the thermal power plants of 300MW and above in my country have ad-opted this technology.The limestone slurry preparation system is the basis for the stable operation of the desulfurization system.Combined with the actual operation of the system,the fracture of the shaft of the filter puddle agitator,the fracture of the electric valve stem at the outlet of the mill recirculation pump,and the fracture of the valve stem of the electric valve at the outlet of the mill are discussed.The agitator in the mill recirculation box is low and cannot be started after being interlocked and shut down,the outlet throwing is serious when the ball mill is shut down,the main motor of the ball mill is shut down due to a failure of the grease detection switch of the lubricating oil system during operation,and the cyclone of the limestone cyclone is blocked.Several common faults and the causes of the faults are proposed,and corresponding solutions are proposed.
关键词
石灰石浆液制备系统/石灰石-石膏湿法FGD/火力发电厂
Key words
Limestone Slurry Preparation System/Limestone-Gypsum Wet FGD/Thermal Power Plant
维普
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