高新,王泉海,熊得杨,卢啸风,李建波,张戎迪,龙潇飞,张家宝,邹兴东

• 1:低品位能源利用技术及系统教育部重点实验室(重庆大学)

摘要(Abstract)：

为研究我国西南地区燃用高汞煤工业循环流化床（CFB）锅炉中汞的迁移转化特性以及飞灰对汞的吸附特性，使用LumexRA-915M汞在线分析仪对锅炉烟道不同位置烟气进行在线监测，同时对入炉煤、底渣、飞灰、脱硫浆液、脱硫废水等进行取样分析。结果表明：除尘器前烟气中的汞超过87%富集于飞灰中，底渣中汞仅占0.07%，飞灰对汞的富集主要归因于其未燃尽碳（UBC）含量、矿物组成及孔隙结构；锅炉所配备的布袋除尘器和湿法脱硫设备的除汞效率分别为91.19%和51.49%，最终排往大气的烟气汞质量浓度仅为3.43μg/m3，高汞煤在CFB内燃烧汞排放达到了国家排放要求。此外，发现不同粒径下飞灰汞含量与UBC含量有相同趋势，而且飞灰中汞主要富集在飞灰表面并主要是以HgO和Hg0的形式存在。

关键词(KeyWords)： CFB锅炉;高汞煤;汞;迁移;飞灰;吸附特性

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划项目(2016YFB0600201)~~

作者(Author): 高新,王泉海,熊得杨,卢啸风,李建波,张戎迪,龙潇飞,张家宝,邹兴东

DOI: 10.19666/j.rlfd.202110207

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