喷淋脱硫塔内除雾器运行特性

doi:10.11930.2015.7.124

摘要/Abstract

摘要： 除雾器的除雾效果对脱硫系统的稳定运行、烟道腐蚀及烟气排放有重要影响，研究不同空塔流速及组合条件下除雾器的除雾性能很有必要。为此，建立了接近实际工程的喷淋脱硫塔实验台，研究了空塔流速、喷淋层与除雾器距离、不同雾化喷嘴等对除雾器出口液滴含量、粒径分布的影响，以及管式除雾器性能。研究结果表明：空塔流速对一级除雾器出口液滴含量的影响较大，对二级除雾器出口液滴含量有一定影响；除雾器出口液滴粒径随空塔流速提高而减小；喷嘴雾化粒径变小后，一级除雾器出口液滴含量明显增加；喷淋层与除雾器间距对一级除雾器出口液滴含量有较大影响；管式除雾器对除雾器出口液滴含量影响不大。

关键词: 烟气脱硫, 喷淋塔, 除雾器, 氧化镁撞击法, 液滴粒径

Abstract: The performance of mist eliminator(ME) is of great significance for stable desulfurization system operation, flue corrosion and gas emissions. Therefore, it is necessary to study the ME performance under different empty tower gas velocities and other combinations. In this paper, a test spray tower similar to actual projects is established to explore the effects of gas velocity, the space between the spraying layer and ME, and atomizing nozzle on the droplet contents of ME outlet and droplet size distribution, as well as the performance of pipe-type ME. The result shows that the gas velocity has great influence on the droplet contents of the first ME outlet and some effects on that of the second ME outlet. The droplet size decreases with the gas velocity increasing. The droplet contents of the first ME outlet increase significantly when the spray particle turns small, and they are greatly influenced by the space between the spraying layer and ME. The pipe-type ME has little effect on the outlet droplet contents.

Key words: flue gas desulfurization, spray tower, mist eliminator, MgO-impactor method, droplet diameter

中图分类号:

TM621.9
X51

何仰朋，陶明，石振晶，郭浩然，何育东. 喷淋脱硫塔内除雾器运行特性[J]. 中国电力, 2015, 48(7): 124-128.

HE Yangpeng, TAO Ming, SHI Zhenjing, GUO Haoran, HE Yudong. Operating Characteristics of Mist Eliminator in Desulfurization Spray Tower[J]. journal1, 2015, 48(7): 124-128.

导出引用管理器 EndNote|Ris|BibTeX

链接本文: https://www.electricpower.com.cn/CN/10.11930.2015.7.124

https://www.electricpower.com.cn/CN/Y2015/V48/I7/124

参考文献

[1] 郭彦鹏，潘丹萍，杨林军. 湿法烟气脱硫中石膏雨的形成及其控制措施[J]. 中国电力，2014，47（3）：152－154．
GUO Yanpeng, PAN Danping, YANG Linjun. Formation and control of gypsum rain in wet flue gas desulfurization [J]. Electric Power, 2014, 47(3): 152-154.
[2] 张军梅.提高电站湿法脱硫系统效率及可靠性的几点措施[J].中国电力，2013，46（5）：13－17．
ZHANG Junmei. Several measures of improving the efficiency and reliability of FGD system in power plant [J]. Electric Power, 2013, 46(5): 13-17.
[3] 杨勇平，孙志春，陆遥，等. 国华定州电厂600 MW机组脱硫系统除雾器前烟道改造的数值模拟研究[J]. 热力发电，2010，39（10）：33-37.
YANG Yongping, SUN Zhichun, LU Yao, et al. Numerical simulation study on retrofitting flue duct before the mist- eliminator in FGD system of 600 MW unit in Guohua a Dingzhou power plant [J]. Thermal Power Generation, 2010, 39(10): 33-37.
[4] 李文艳，徐妍，申林艳. 数值模拟技术在湿法脱硫除雾器优化设计上的应用[J]. 热力发电，2007，36（5）：10－14．
LI Wenyan, XU Yan, SHEN Linyan. Application of numerical simulation in optimized design of demistor for wet desulfuration [J]. Thermal Power Generation, 2007, 36(5): 10-14.
[5] 曾庭华，杨华，廖永进，等. 湿法烟气脱硫系统的调试、试验及运行[M]. 北京：中国电力出版社，2008：7－11．
[6] 钟秦. 燃煤烟气脱硫脱硝技术及工程实例[M]. 北京：化学工业出版社，2002：74－75．
[7] 鲍静静，杨林军，颜金培，等. 湿法烟气脱硫系统对细颗粒脱除性能的实验研究[J]. 化工学报，2009，60（5）：1260－1267．
BAO Jingjing, YANG Linjun, YAN Jinpei, et al. Performance of removal of fine particles by WFGD system [J]. 2009, 60(5): 1260-1267.
[8] 郭长仕. 石灰石-石膏湿法脱硫“石膏雨”现象原因分析及治理措施[J]. 环境工程，2012，30（S2）：221－223．
GUO Changshi. The treatment measures and cause analysis for gypsum rain of wet limestone-gypsum FGD system[J]. Environmental Engineering, 2012, 30(S2): 221-223.
[9] 孙志春，郭永红，肖海平，等. 鼓泡脱硫塔除雾器除雾特性数值研究及实验验证[J]. 中国电机工程学报，2010，30（8）：68－75．
SUN Zhichun, GUO Yonghong, XIAO Haiping, et al. Numerical simulation and experimental validation on demisting characteristic of the mist eliminator for jet bubble reactor dusulfurization system [J]. Proceedings of the CSEE, 2010, 30(8): 68-75.
[10] 王霄，闵健，高正明，等. 脱硫吸收塔除雾器性能的实验研究和数值模拟[J]. 环境工程学报，2008，2（11）：1529－1534.
WANG Xiao, MIN Jian, GAO Zhengming, et al. Experimental study and numerical simulation of characteristics of demister of absorbing tower in desulfurization system[J]. Chinese Journal of Environmental Engineering, 2008, 2(11): 1529-1534.
[11] 杨柳，王世和，王小明. 脱硫除雾器除雾特性的研究[J]. 中国动力工程学报，2005，25（2）：289－292．
YANG Liu, WANG Shihe, WANG Xiaoming. Study on characteristics of a sulfur removal demister [J]. Chinese Journal of Power Engineering, 2005, 25(2): 289-292.
[12] 黄龙浩，肖海平，谢乾，等. 湿法脱硫系统除雾器性能的实验研究[J]. 现代电力，2009，26（4）：71－75．
HUANG Longhao, XIAO Haiping, XIE Qian, et al. Experimental investigation on mist eliminator performance in wet desulfurization system [J]. Modern Electric Power, 2009, 26(4): 71-75.
[13] 姚杰，仲兆平，周山明. 湿法烟气脱硫带钩波纹板除雾器结构优化数值模拟[J]. 中国电机工程学报，2010，30（14）：61－67．
YAO Jie, ZHONG Zhaoping, ZHOU Shanming, et al. Numerical simulation on wave-plate demister with hamulus in wet flue gas desulfurization [J]. Proceedings of the CSEE 2010, 30(14): 61-67.
[14] MAY K R. The measurement of airborne droplets by the magnesium oxide method [J]. Journal of Science Instruments, 1950, 27(5): 128-130.
[15] Dr.-Ing R Jung. GefGsonde zum messen des staubgehaltes in strbenden gasen[J]. Chemie Ingenieur Technik, 1969, 41(10): 620-625.