湿烟羽扩散特性研究
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摘要
湿烟气由烟囱出口进入温度较低的环境空气会形成湿烟羽,俗称"大白烟",产生视觉污染。选取湿烟羽长度来研究湿烟羽对环境的影响范围和严重程度,重点分析了环境条件和烟气条件对湿烟羽长度的影响。结果表明,湿烟羽长度与环境温度和环境相对湿度呈指数关系变化,环境温度对湿烟羽长度的影响更大;烟气速度对湿烟羽的影响程度小于环境风速;环境温度越低,烟气温度对湿烟羽长度的影响越大;烟囱出口半径越大,湿烟羽长度越大。
Wet plume forms when the wet flue gas from the chimney exits into the ambient air,which would bring about visual pollution. In the paper,the length of wet plume was applied to study the severity of wet plumes,and effects of environmental conditions and flue gas conditions on wet plume length were analyzed emphatically. Results show that,the length of wet plume has an exponential relationship with the ambient temperature and relative humidity,and the influence of ambient temperature on wet plume length was greater. The influence of flue gas velocity on wet plume was smaller than that of ambient wind; the lower the ambient temperature,the greater effect of the flue gas temperature on the length of the wet plume; the larger the outlet radius of the chimney,the longer the wet plume.
Wet plume forms when the wet flue gas from the chimney exits into the ambient air,which would bring about visual pollution. In the paper,the length of wet plume was applied to study the severity of wet plumes,and effects of environmental conditions and flue gas conditions on wet plume length were analyzed emphatically. Results show that,the length of wet plume has an exponential relationship with the ambient temperature and relative humidity,and the influence of ambient temperature on wet plume length was greater. The influence of flue gas velocity on wet plume was smaller than that of ambient wind; the lower the ambient temperature,the greater effect of the flue gas temperature on the length of the wet plume; the larger the outlet radius of the chimney,the longer the wet plume.
引文
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[13]丁峰,李时蓓,邢可佳.烟塔合一项目烟气抬升影响因素分析[J].环境工程技术学报,2011(2):173-180.
[14]周晶,刘道清,汪庆丰.烧结烟气脱硫系统湿烟气排放的环境问题探讨[J].宝钢技术,2012(5):37-44.
[2]吴永杰,戴永阳,董凌宏,等.华能杨柳青电厂2×300MW机组湿烟囱烟囱雨治理研究[J].能源环境保护,2014,28(5):16-19.
[3]聂鹏飞,张宏宇.火电厂无GGH湿法脱硫机组烟囱降雨原因分析及对策[J].工业安全与环保,2012,38(2):4-8.
[4]阚竟生.燃煤电厂锅炉烟气含湿量计算分析及排湿特性研究[D].上海:东华大学,2015.
[5]周洪光.如何正确认识火电厂湿烟气排放及白雾现象[J].环境工程,2015,33(S1):433-437.
[6]裘立春.大型燃煤电站锅炉冒白烟的研究[J].锅炉技术,2015,46(3):26-29.
[7]谭玲君,赵晓峰,梁增英,等.垃圾焚烧发电厂白烟成因及其分析[J].环境科学与技术,2014,37(120):483-485.
[8]聂玉强,邝小磊,宋春华.陶瓷厂喷雾干燥塔白烟形成的机理及解决措施[J].环境工程,2006,24(4):71-75.
[9]朱文杰.湿式冷却塔白烟现象分析与解决方案[J].制冷空调与电力机械,2010,31(4):20-23.
[10]赵文升,刘英.国华台山电厂烟囱消除白雾的研究与应用[J].军民两用技术与产品,2015(4):177-180.
[11]姚增权.湿法脱硫烟气直接排放的环境问题探讨[J].国际电力,2003,7(1):5-8.
[12]姚增权.湿烟气的抬升与凝结[J].电力环境保护,2003,7(1):42-45.
[13]丁峰,李时蓓,邢可佳.烟塔合一项目烟气抬升影响因素分析[J].环境工程技术学报,2011(2):173-180.
[14]周晶,刘道清,汪庆丰.烧结烟气脱硫系统湿烟气排放的环境问题探讨[J].宝钢技术,2012(5):37-44.
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