2018年 第4卷 第3期
《工程（英文）》 >> 2018年 第4卷 第3期 doi: 10.1016/j.eng.2018.05.009
凝变除湿复合烟气深度净化技术工程应用
State Power Environmental Protection Research Institute, State Environmental Protection Key Lab for Air Physical Simulation & Pollution Control, Nanjing 210031, China
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摘要
湿法脱硫后湿烟气排放会形成湿烟羽现象，不仅浪费水资源，产生视觉污染，同时湿烟气中的SO3、溶解在液态水中的盐、颗粒物等在大气环境中会形成二次污染。本文提出了一种凝变除湿复合烟气深度净化技术，包括凝变湿电一体化和凝变除雾一体化两种技术路线，分别在630 MW和1000 MW燃煤机组上进行了工程应用。结果表明，凝变除湿复合烟气深度净化技术对脱硫后饱和湿烟气的除水量大于4 g·kg-1·℃-1，在烟气温度降低1.5~5.3℃时，可回收烟气中5%~20%的水分，有效节约水资源；显著减少水汽排放，有效消除湿烟羽现象；离子浓度降低65%以上，SO3脱除率大于75%，颗粒物脱除率为92.53%。
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