Technical and Economical Analysis of No Bypass Wet FGD

In order to achieve a fundamental and effective control of SO2,to resolve the problems of low availability and instability of the flue gas desulfurization(FGD) plant installed at the coal-fired power plant,it is imperative to cancel bypass duct.In this article after the author makes an analysis on the advantages of no bypass FGD plant and common failures of conventional wet FGD plant(with bypass),and also a comparision between a 2×600 MW FGD plant with no bypass and a conventional 2×660 MW FGD project,the technical and economic characteristics is clear.The result shows that FGD plant with no bypass may eliminate the failure points of booster fan,flue gas heat exchanger(GGH) and inlet damper,and may help improve the safety of the boiler and the reliability of the FGD system.Therefore,FGD plant with no bypass is feasible in economy.