CAJ | 학술논문

某火力发电厂FGD系统采用石灰石／石膏湿法脱硫工艺，FGD系统中设置有旁路挡板，在正常运行时，其脱硫效率可以达到90％以上，二氧化硫排放低于400 mg／m3，达到国家排放要求。FGD系统运行中异常主要表现在原烟气SO2浓度超标，增压风机、GGH、吸收塔除雾器等设备易发生故障，导致脱硫效率下降，不能够达标排放，在设备运行过程中应注意防范。
모화력발전엄FGD계통채용석회석／석고습법탈류공예，FGD계통중설치유방로당판，재정상운행시，기탈류효솔가이체도90％이상，이양화류배방저우400 mg／m3，체도국가배방요구。FGD계통운행중이상주요표현재원연기SO2농도초표，증압풍궤、GGH、흡수탑제무기등설비역발생고장，도치탈류효솔하강，불능구체표배방，재설비운행과정중응주의방범。
The limestone /gypsum wet desulphurization process is applied in the FGD system of one thermal power plant and the bypass damper is set in the FGD system .In normal operation ,the desulfurization efficiency can reach above 90%and the sulfur dioxide emission is below 400 mg/m3 ,meeting the national emission requirements .The anomalies in the FGD system operation mainly include :the concentration of SO2 in the original flue gas is exceeded and the booster fan ,GGH ,the demister in the absorbing tower are easily malfunctioned ,which makes desulfurization efficiency decreased and can’t reach the national standard .These problems should be paid attention to in operation .