单塔双循环脱硫系统阻力增大分析及处理

Analysis and Treatment of Increased Resistance in a Single-tower Double-cycle Desulfurization System

针对某超超临界二次再热机组单塔双循环脱硫烟气系统的运行情况,对脱硫系统除雾器压差上升、除雾器堵塞导致机组带负荷能力受限进行了分析,介绍了除雾器堵塞的运行调整、在线酸洗以及停机后检查处理情况,并制定了详细的解决方案,取得了良好效果。

Aiming at the operation conditions of the single-tower double-cycle flue gas desulphurization (FGD) system for a ultra-supercritical double-reheat unit,an analysis was carried out on the limited load capacity of the unit caused by increased differential pressure and blockage in its mist eliminator,while an introduction was presented to the specific operational adjustment,on-line pickling and shutdown inspection for the mist eliminator,following which,detailed countermeasures were put forward and taken,with good effectiveness achieved.