Case Study on Reconstruction of Wet FGD Bypass Damper Plugging for 600-MW Thermal Units

doi:10.11930/j.issn.1004-9649.2013.3.100.3

Abstract

Abstract: According to the requirements of energy saving and emission reduction policy for the 12^th Five-Year period, the bypass damper for the wet FGD system of a 600-MW unit in one power plant was plugged on May 17, 2012. Based on the comparison between the technical characteristics before and after plugging, the adverse effects of eliminating the bypass on the secure operation of the unit and the desulfurization equipment are presented. To improve the reliability of the desulfurization system, the desulfurization equipment is incorporated into the main equipment management with a series of measures adopted, such as installing a flue gas emergency spraying system, adding water pipelines to the mist eliminator, building a pipeline for slurry supply, splitting the power bus for large devices, adjusting logical protection and using additives for stable desulfurization efficiency. Since then, the desulfurization equipment runs stably, and no main equipment shutdown has ever happened due to breakdown of the desulphurization facilities.

Key words: 600-MW unit, wet flue gas desulfurization, bypass damper, elimination of bypass

CLC Number:

TK227.6

NIE Peng-fei, WANG Yang, CHEN Qi-fu, ZHANG Hong-yu. Case Study on Reconstruction of Wet FGD Bypass Damper Plugging for 600-MW Thermal Units[J]. Electric Power, 2013, 46(3): 100-103.

Add to citation manager EndNote|Ris|BibTeX

URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.2013.3.100.3

https://www.electricpower.com.cn/EN/Y2013/V46/I3/100

References

[1] 聂鹏飞.王滩电厂脱硫系统经济运行初探[J]. 电力科技与环保,2010,26（4）：57-59.
NIE Peng-fei. Economic operation of FGD system in Wangtan power plant[J]. Electric Power Technology and Environmental Protection, 2010, 26(4): 57-59.
[2] 马英,周洪光. 无旁路烟道的湿法脱硫系统运行研究[J]. 热力发电,2010,39（8）：96-97.
MA Ying, ZHOU Hong-guang. Study on operation on wet desulphurization system for flue duct without bypass[J]. Thermal Power Generation, 2010, 39(8): 96-97.
[3] 白云峰,许正涛,吴树志,等. 脱硫机组取消旁路烟道的技术经济分析[J]. 中国电力,2008,41（1）：73-75.
BAI Yun-feng, XU Zheng-tao, WU Shu-zhi, et al . Technical and economic analysis on cancelling bypass gas duct in wet-FGD installations[J]. Electric Power, 2008, 41(1): 73-75.
[4] 靳达,张国庆,李增枝,等. 燃煤电厂无旁路烟气脱硫系统的设计与调试[J]. 电力科技与环保,2011,27（4）：35-37.
JIN Da, ZHANG Guo-qing, LI Zeng-zhi, et al . Power plant flue gas desulphurization system without bypass designing and debugging[J]. Electric Power Technology and Environmental Protection, 2011, 27(4): 35-37.
[5] 聂鹏飞,孟庆庆,武东. 燃煤电厂湿法脱硫浆液循环泵叶轮磨损的分析和修复[J]. 中国电业：技术版,2011（4）：54-57.
NIE Peng-fei, MENG Qing-qing, WU Dong. Analysis and repair of WFGD slurry circulating pump impeller attrition in coal-fired power plant[J]. China Electric Power: Technology Edition, 2011(4): 54-57.
[6] 聂鹏飞,边东升,吴学民,等. 600 MW机组湿法脱硫系统除雾器堵塞原因分析及对策[J]. 华电技术,2011,33（11）：69-73.
NIE Peng-fei, BIAN Dong-sheng, WU Xue-min, et al . Analysis on reasons of demister blockage of 600 MW unit wet FGD systeme and countermeasures[J]. Huadian Technology, 2011, 33(11): 69-73.
[7] 李晓金,甄志. 取消GGH后湿法烟气脱硫系统设计方案[J]. 中国电力,2010,43（11）：56-59.
LI Xiao-jin, ZHEN Zhi. Discussion on wet flue gas desulfurization system scheme for uninstalling GGH[J]. Electric Power, 2010, 43(11): 56-59.
[8] 聂鹏飞,吴学民,窦中秋. 600 MW机组湿法脱硫添加剂试验研究[J].节能,2011,30（5）：33-35.
NIE Peng-fei, WU Xue-min, DOU Zhong-qiu. Experimental study on wet flue gas desulphurization with additives for 600 MW units[J]. Energy Conservation, 2011, 30(5): 33-35.
[9] 刘璞,谈琪英,汤晓舒. “烟塔合一”、合并风机、脱硫无旁路烟道热电机组烟道系统设计[J]. 电力建设,2010,31（3）：74-78.
LIU Pu, TAN Qi-ying, TANG Xiao-shu. Flue-gas duct system design in co-generation power plant with stack-in cooling tower,fan combined, non-bypass FGD[J]. Electric Power Construction, 2010, 31(3): 74-78.
[10] 王义兵,郑建农,苏杭. 无旁路FGD原烟道烟气预处理装置[J].热力发电,2011,40（12）：107.
WANG Yi-bing, ZHENG Jian-nong, SU Hang. No bypass FGD raw flue gas pretreatment device[J]. Thermal Power Generation,2011, 40(12): 107.