李源,马仑,周海远,马帅,陈科峰,王留锋,陈青

• 1:润电能源科学技术有限公司
• 2:武汉理工大学安全科学与应急管理学院

摘要(Abstract)：

污泥掺烧是破解污泥围城难题的重要方法之一。针对某350 MW超临界燃煤机组，开展烟气干化污泥掺烧现场试验，分析污泥掺烧量、机组负荷对系统运行和能耗的影响，利用抽取的锅炉尾部烟气干化湿污泥，干化后污泥被烟气携带入炉协同焚烧。结果表明：湿污泥处理量与干化所需的烟气温度、流量呈正相关，干化11 t/h湿污泥需要消耗597℃锅炉烟气71 t/h；随着污泥掺烧比例的增加，锅炉效率有所下降，机组厂用电率则有所上升；污泥掺烧时，锅炉效率下降主要由排烟热损失增加导致，机械不完全燃烧热损失和灰渣物理显热损失增加为次要因素；机组厂用电率上升的主要原因是污泥干化系统电耗偏大，并且机组厂用电率上升量中污泥掺烧系统分摊了大部分；锅炉效率下降和机组厂用电率上升共同导致机组供电燃煤耗率上升，其中机组厂用电率上升的影响更加明显；在机组负荷262 MW和污泥掺混质量比8.76%（污泥含水率83%）工况下，锅炉效率下降0.260%，机组厂用电率增加0.466%，机组供电燃煤耗率增加2.38 g/(kW·h)。该结论可为燃煤机组耦合烟气干化污泥发电系统能耗评估与优化提供参考。

关键词(KeyWords)： 燃煤机组;烟气干化污泥;锅炉效率;厂用电率;燃料/燃煤耗率

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划项目（2024YFB4106103）~~

作者(Author): 李源,马仑,周海远,马帅,陈科峰,王留锋,陈青

DOI: 10.19666/j.rlfd.202503040

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