杨希刚^1,2,周磊¹,杨林军^1,2

• 1:东南大学 能源与环境学院，能源热转换及其过程测控教育部重点实验室，江苏 南京 210096
• 2:国电科学技术研究院，江苏 南京 210031

摘要(Abstract)：

结合脱硫净烟气特点，提出分别通过脱硫净烟气中加装氟塑料换热器降温、添加蒸汽、添加冷空气3种措施建立细颗粒物凝结长大所需的过饱和水汽环境，进而增强后续高效除雾器的拦截脱除效果。数值分析了3种措施的可行性，并利用燃煤热态试验平台，对比考察了不同方式促进细颗粒物脱除的效果。结果表明：典型工况下，加装氟塑料换热器、添加蒸汽、添加冷空气三种措施均可使脱硫净烟气中细颗粒物排放浓度降低35%以上；其中，加装氟塑料换热器降温措施对脱硫净烟气原始温度变化的适应性较强，细颗粒物脱除效率基本不随脱硫净烟气原始温度的变化而改变；添加蒸汽方式不适于脱硫净烟气温度较高的场合，且耗能较大；添加冷空气方式在脱硫净烟气温度较高（≥ 55℃）时效果显著，但所需冷空气的温度较低，存在来源困难等问题。

关键词(KeyWords)： 水汽相变;湿法脱硫;细颗粒物;脱除

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划项目（2016YFB0600602）。

作者(Author): 杨希刚^1,2,周磊¹,杨林军^1,2

DOI: 10.3969/j.issn.1003-9015.2019.02.031

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