1. 浙江大学 能源工程学院,浙江,杭州,310027
2. 上海城投污水处理有限公司,上海,201203
叶志榕(1998—),男,福建福州人,硕士研究生,研究方向为焚烧烟气中汞的控制原理和技术
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叶志榕,王丽花,陆峥嵘,董宇航,王飞,池涌. 溴化钙对市政污泥焚烧烟气中汞的脱除研究动力工程学报, 2025, 45(6): 924-930 https://doi.
org/10.19805/j.cnki.jcspe.2025.240129
叶志榕,王丽花,陆峥嵘,董宇航,王飞,池涌. 溴化钙对市政污泥焚烧烟气中汞的脱除研究动力工程学报, 2025, 45(6): 924-930 https://doi. DOI: 10.19805/j.cnki.jcspe.2025.240129.
org/10.19805/j.cnki.jcspe.2025.240129 DOI:
为探究溴化钙在市政污泥焚烧烟气中的脱汞效果
在实验室和工程现场开展了溴化钙脱汞试验。结果表明:添加溴化钙能有效氧化烟气中的单质汞
在800、900和1 000 ℃下
当溴汞化学当量比为2 000时
单质汞氧化率能达到80%
并且添加溴化钙对NO
x
和SO
2
排放特性影响较小
但添加溴化钙会使HCl排放量有所上升
特别是在溴汞化学当量比超过2 000时
HCl转化率急剧上升;当溴汞化学当量比为1 000和2 000时
烟气中气态汞脱除率能达到60%和73%
且添加溴化钙对常规污染物排放(NO
x
、SO
2
、HCl和烟尘)和锅炉运行状态没有影响。
To investigate the mercury removal effect of calcium bromide in municipal sludge incineration flue gas
mercury removal experiments using calcium bromide were conducted both in the laboratory and at the engineering site. Results show that the addition of calcium bromide can effectively oxidize elemental mercury in the flue gas. At 800
900 and 1 000 ℃
when the chemical equivalence ratio of bromine to mercury is 2 000
the oxidation rate of elemental mercury can reach 80%. Moreover
the addition of calcium bromide has a minor effect on the emission characteristics of NO
x
and SO
2
but it causes the increase in HCl emissions
especially when the chemical equivalence ratio of bromine to mercury exceeds 2 000
the conversion rate of HCl
rises sharply. When the chemical equivalence ratio of bromine to mercury is 1 000 and 2 000
the removal rate of gaseous mercury in the flue gas can reach 60% and 73% respectively
and the addition of calcium bromide has no effect on the emission of conventional pollutants (NO
x
SO
2
HCl
and particulate matter) and the operation of the boiler.
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