| FGD氧化空气管堵塞折断原因分析及处理 |
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| 引用本文： | 张长伟,许俊德.FGD氧化空气管堵塞折断原因分析及处理[J].电力科学与技术学报,2009,24(3):86-89. |
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| 作者姓名： | 张长伟 许俊德 |
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| 作者单位： | 中国大唐集团科技工程有限公司,技术服务部,北京,100097 |
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| 摘 要： | 锅炉石灰石-石膏湿法烟气脱硫装置（FGD）氧化空气管的堵塞与折断是火电厂普遍存在的难题.统计分析一300 MW火电厂的FGD运行情况,氧化空气管的堵塞与折断降低了吸收塔浆液池中的亚硫酸钙的氧化效率,使浆液中可溶性亚硫酸盐的浓度增大,加剧吸收塔内壁结垢;同时导致石灰石利用率下降,石膏纯度降低与石膏脱水困难,FGD效率下降.并分析了氧化空气管堵塞与断裂的原因,提出了解决办法,对提高FGD装置运行的经济性和安全性有一定参考意义.
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| 关 键 词： | FGD 氧化空气管 锅炉 火电厂 |
Analyse and treatment of oxidation air tubes blocking and breaking for wet FGD system |
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| ZHANG Chang-wei,XU Jun-de.Analyse and treatment of oxidation air tubes blocking and breaking for wet FGD system[J].JOurnal of Electric Power Science And Technology,2009,24(3):86-89. |
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| Authors: | ZHANG Chang-wei XU Jun-de |
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| Affiliation: | (Technical Services Division, China Datang Science ＆ Engineering Co. , Ltd, Beijing 100097 ,China) |
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| Abstract: | The blocking and breaking of oxidation air tube is a common problem in the boiler wet FGD （ flue gas desulfurization） system of fossil-fired power plants. The FGD operation of a 300 MW fossil-fired power plant is analyzed in this paper. The oxidation air tube blocking and breaking result in decreasing of the CaSO3 oxidation efficiency and increasing the dissolving sulfite concentration in the slurry pool, enhancing the scaling on inner surface of the absorption tower, and reducing the CaCO3 utilization ratio, CaSO4 purity and FGD efficiency. The blocking and breaking reasons are analyzed and the resolving methods are also proposed. They will be a useful reference to improve economy and security of FGD. |
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| Keywords: | FGD |
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