【案例分析】电厂除尘器布袋发生化学腐蚀的现象分析：电厂除尘器布袋发生化学腐蚀的原因主要有：酸露点的腐蚀和硫酸气溶胶的腐蚀。经了解，电厂的锅炉改为布袋除尘器后燃煤情况由于燃煤市场变化，燃煤煤种发生了变化，燃煤硫分明显增大，由原来进入滤袋的烟气SO2的浓度: 800～3000 mg/ Nm3，增大到：800～4500 mg/ Nm3，且有一大部分时间段进入滤袋的烟气中SO2在4000mg/m3左右工况
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