多种负荷工况下湿式电除尘器的PM2.5脱除效率及排放特征

doi:10.11930/j.issn.1004-9649.202005046

中国电力 ›› 2021, Vol. 54 ›› Issue (1): 182-187.DOI: 10.11930/j.issn.1004-9649.202005046

多种负荷工况下湿式电除尘器的PM_2.5脱除效率及排放特征

刘玺璞^1,2, 李东阳^1,2, 张超^1,2

1. 西安热工研究院有限公司，陕西西安 710054;
2. 西安西热锅炉环保工程有限公司，陕西西安 710054

收稿日期:2020-05-08 修回日期:2020-06-29 出版日期:2021-01-05 发布日期:2021-01-11
作者简介:刘玺璞(1988—)，男，硕士，工程师，从事烟尘污染控制技术研究与工程应用工作，E-mail：liuxipu@tpri.com.cn
基金资助:
中国华能集团公司科技项目(燃煤机组烟气超低排放环保设施系统运行优化技术研究，HNKJ17-H11)

Experimental Study on Fine Particulate Matter Removal Efficiency and the Emission Characteristics of WESP under Different Loads

LIU Xipu^1,2, LI Dongyang^1,2, ZHANG Chao^1,2

1. Xi'an Thermal Power Research Institute Co., Ltd., Xi'an 710054, China;
2. Xi'an Xi Re Boiler Environmental Protection Engineering Co., Ltd., Xi'an 710054, China

Received:2020-05-08 Revised:2020-06-29 Online:2021-01-05 Published:2021-01-11
Supported by:
This work is supported by the Science and Technology Project of China Huaneng Group (Study on Operation Optimization Technology of Ultra-low Emission Environmental Protection Facilities for Flue Gas in Coal-Fired Units, No.HNKJ17-H11)

摘要/Abstract

摘要： 在燃煤发电机组带100%、75%、50%负荷，每种负荷下湿式电除尘器（WESP）以高功率和节能优化2种模式运行共6种工况下，使用ELPI+测试湿式电除尘器入口和出口烟尘的质量浓度和排放特征。实验结果表明，在高负荷下，湿式电除尘器采用节能模式会导致总烟尘、PM₁₀、PM_2.5浓度均显著升高，甚至排放质量浓度超过5 mg/m³；而在中低负荷下，湿式电除尘器采用节能模式会导致总烟尘排放浓度显著升高，但PM₁₀、PM_2.5浓度则变化不显著，且粒径越小变化越小；PM₁₀、PM_2.5浓度变化对总排放的影响较小，除尘系统节能优化试验可为机组实现超低排放下的优化运行提供有力支持；湿式电除尘器入口和出口飞灰颗粒质量呈现出典型的双模态分布；湿式电除尘器以高功率运行时，2~10 μm的颗粒仅占PM₁₀质量的30%左右，湿式电除尘器以节能模式运行时，2~10 μm的颗粒可占到PM₁₀质量的50%以上。

关键词: PM_2.5, 湿式电除尘器, 实验研究, 排放特征, 多种负荷

Abstract: In this paper, the dust mass concentrations and emission characteristics are tested using ELPI+ device at the inlet and outlet of a wet electric-static precipitator (WESP) under six different conditions, i.e., the combination of the boiler load at 100%, 75%, and 50%, with the WESP operated at high power and optimized energy-saving modes, respectively. From the experimental results, under 100% load and WESP energy-saving operation mode, significant increases are observed in the concentration of total dust emission, PM₁₀ and PM_2.5. Particularly, the total dust emission mass concentrations have even exceeded 5 mg/m³. However, under medium or low loads with WESP energy-saving operation mode, the total dust emission concentration still increases significantly, while the concentrations of PM₁₀ and PM_2.5 do not change much. The smaller the particle size, the less change of concentrations is noticed. Therefore, the energy-saving optimization test can provide technical assistance for the optimized unit operation mode with the goal of ultra-low emission also achieved at the same time. Additionally, PM₁₀ and PM_2.5 have little influence on the total dust emission under medium or low loads. The fly ash particles at the inlet and outlet of the WESP demonstrate the pattern of typical bimodal distribution. Under low or medium loads, the mass of the particles of 2~10 μm accounts for about 30% of all PM₁₀ particle mass if the WESP operates at high power mode, while that percentage jumps to 50% if it operates at energy-saving mode.

Key words: PM_2.5, wet electro-static precipitator (WESP), experimental study, emission characteristics, different loads

刘玺璞, 李东阳, 张超. 多种负荷工况下湿式电除尘器的PM_2.5脱除效率及排放特征[J]. 中国电力, 2021, 54(1): 182-187.

LIU Xipu, LI Dongyang, ZHANG Chao. Experimental Study on Fine Particulate Matter Removal Efficiency and the Emission Characteristics of WESP under Different Loads[J]. Electric Power, 2021, 54(1): 182-187.

导出引用管理器 EndNote|Ris|BibTeX

链接本文: https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.202005046

https://www.electricpower.com.cn/CN/Y2021/V54/I1/182

参考文献

[1] 朱法华. 燃煤电厂烟气污染物超低排放技术路线的选择[J]. 中国电力, 2017, 50(3): 11-16
ZHU Fahua. Methodologies on choosing appropriate technical route for ultra low emission of flue gas pollutants from coal-fired power plants[J]. Electric Power, 2017, 50(3): 11-16
[2] 史文峥, 杨萌萌, 张绪辉, 等. 燃煤电厂超低排放技术路线与协同脱除[J]. 中国电机工程学报, 2016, 36(16): 4308-4318, 4513
SHI Wenzheng, YANG Mengmeng, ZHANG Xuhui, et al. Ultra-low emission technical route of coal-fired power plants and the cooperative removal[J]. Proceedings of the CSEE, 2016, 36(16): 4308-4318, 4513
[3] 姚明宇, 聂剑平, 张立欣, 等. 燃煤电站锅炉烟气污染物一体化协同治理技术[J]. 热力发电, 2016, 45(3): 8-12
YAO Mingyu, NIE Jianping, ZHANG Lixin, et al. Integrative flue-gas pollutants removal technology for coal-fired utility boilers[J]. Thermal Power Generation, 2016, 45(3): 8-12
[4] 赵琴霞, 陈招妹, 周超炯, 等. 湿式电除尘技术及其在电厂的应用前景探讨[J]. 电力科技与环保, 2012, 28(4): 24-26
ZHAO Qinxia, CHEN Zhaomei, ZHOU Chaojiong, et al. Discussion on wet ESP technology and its application prospect in coal-fired power plants[J]. Electric Power Technology and Environmental Protection, 2012, 28(4): 24-26
[5] 莫华, 朱法华, 王圣, 等. 湿式电除尘器在燃煤电厂的应用及其对PM_2.5的减排作用[J]. 中国电力, 2013, 46(11): 62-65
MO Hua, ZHU Fahua, WANG Sheng, et al. Application of WESP in coal-fired power plants and its effect on emission reduction of PM_2.5[J]. Electric Power, 2013, 46(11): 62-65
[6] 聂孝峰, 张超, 刘源, 等. 湿式电除尘(雾)器在燃煤电厂300 MW机组上的应用[J]. 电力科技与环保, 2016, 32(2): 32-34
NIE Xiaofeng, ZHANG Chao, LIU Yuan, et al. Application of wet electrostatic precipitator in coal-fired power plant 300 MW units[J]. Electric Power Technology and Environmental Protection, 2016, 32(2): 32-34
[7] 赵磊, 周洪光. 超低排放燃煤火电机组湿式电除尘器细颗粒物脱除分析[J]. 中国电机工程学报, 2016, 36(2): 468-473
ZHAO Lei, ZHOU Hongguang. Particle removal efficiency analysis of WESP in an ultra low emission coal-fired power plant[J]. Proceedings of the CSEE, 2016, 36(2): 468-473
[8] 熊桂龙, 李水清, 陈晟, 等. 增强PM_2.5脱除的新型电除尘技术的发展[J]. 中国电机工程学报, 2015, 35(9): 2217-2223
XIONG Guilong, LI Shuiqing, CHEN Sheng, et al. Development of advanced electrostatic precipitation technologies for reducing PM_2.5 emissions from coal-fired power plants[J]. Proceedings of the CSEE, 2015, 35(9): 2217-2223
[9] 徐明厚, 王文煜, 温昶, 等. 燃煤电厂细微颗粒物脱除技术研究新进展[J]. 中国电机工程学报, 2019, 39(22): 6627-6640
XU Minghou, WANG Wenyu, WEN Chang, et al. Research development of precipitation technology to accomplish the ultra-low emission from coal-fired power plants[J]. Proceedings of the CSEE, 2019, 39(22): 6627-6640
[10] 刘玺璞, 李启永, 李东阳, 等. 330 MW燃煤发电机组除尘系统节能优化[J]. 中国电力, 2019, 52(5): 164-169, 175
LIU Xipu, LI Qiyong, LI Dongyang, et al. Energy-saving optimization on the dust collection system of a 330 MW power plant[J]. Electric Power, 2019, 52(5): 164-169, 175
[11] 罗先铎, 原争义, 刘锦平. 125 MW机组低负荷时辅机节电运行方式[J]. 热力发电, 2007(3): 54-55
LUO Xianduo, YUAN Zengyi, LIU Jinping. Electricity-saving operation of auxiliay machines for boiler under low load of 150 MW unit[J]. Thermal Power Generation, 2007(3): 54-55
[12] JÄRVINEN A, AITOMAA M, ROSTEDT A, et al. Calibration of the new electrical low pressure impactor (ELPI+)[J]. Journal of Aerosol Science, 2014, 69: 150-159.
[13] 朱少平, 刘含笑, 郦建国, 等. 电子低压冲击器不同稀释比对PM_2.5排放测试的影响[J]. 电力与能源, 2014, 35(2): 141-143
ZHU Shaoping, LIU Hanxiao, LI Jianguo, et al. Comparative study of ELPI with different dilution ratio to PM_2.5 emission[J]. Power & Energy, 2014, 35(2): 141-143
[14] 李皓然, 刘含笑, 赵琳, 等. 湿式电除尘器性能测试方法及排放特征研究[J]. 中国电力, 2018, 51(10): 123-129
LI Haoran, LIU Hanxiao, ZHAO Lin, et al. Study on performance testing method and emission characteristics of wet electrostatic precipitators[J]. Electric Power, 2018, 51(10): 123-129
[15] 刘含笑, 朱少平, 姚宇平, 等. 电荷法测试WESP进出口烟气中PM_2.5的试验研究[J]. 中国电力, 2014, 47(12): 37-41
LIU Hanxiao, ZHU Shaoping, YAO Yuping, et al. Experimental research on the PM_2.5 in inlet and outlet flue gas using ELPI for WESP of “ultra-clean emission” power plants[J]. Electric Power, 2014, 47(12): 37-41
[16] 骆仲泱, 江建平, 赵磊, 等. 不同电场中细颗粒物的荷电特性研究[J]. 中国电机工程学报, 2014, 34(23): 3959-3969
LUO Zhongyang, JIANG Jianping, ZHAO Lei, et al. Research on the charging of fine particulate in different electric fields[J]. Proceedings of the CSEE, 2014, 34(23): 3959-3969
[17] 周栋梁, 李水清, 靳星, 等. 电场、流场耦合作用下脱除细颗粒物的实验和数值模拟[J]. 中国电机工程学报, 2016, 36(2): 453-458
ZHOU Dongliang, LI Shuiqing, JIN Xing, et al. Experiments and numerical simulations of the removal of fine particles in the coupling field of electrostatic precipitators[J]. Proceedings of the CSEE, 2016, 36(2): 453-458
[18] PARKER K R. Applied electrostatic precipitation[M]. London: Blackie Academic & Professional, 1997.
[19] 刘含笑, 姚宇平, 郦建国, 等. 燃煤电厂WESP颗粒物脱除机制及排放特征研究[J]. 中国电力, 2017, 50(12): 178-184
LIU Hanxiao, YAO Yuping, LI Jianguo, et al. Research of PM removal and emission characteristics for WESP in a coal-fired power plant[J]. Electric Power, 2017, 50(12): 178-184
[20] 王珲, 宋蔷, 姚强, 等. 电厂湿法脱硫系统对烟气中细颗粒物脱除作用的实验研究[J]. 中国电机工程学报, 2008, 28(5): 1-7
WANG Hui, SONG Qiang, YAO Qiang, et al. Experimental study on removal effect of wet flue gas desulfurization system on fine particles from a coal-fired power plant[J]. Proceedings of the CSEE, 2008, 28(5): 1-7

多种负荷工况下湿式电除尘器的PM_2.5脱除效率及排放特征

Experimental Study on Fine Particulate Matter Removal Efficiency and the Emission Characteristics of WESP under Different Loads

RichHTML

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

[1]	刘含笑, 吴黎明, 赵琳, 于立元, 郦建国, 崔盈. 燃煤电厂湿式电除尘器减排及能效特性研究[J]. 中国电力, 2022, 55(5): 196-203.
[2]	赵福平, 范松海, 冀一玮, 宁鑫, 尚豪, 宁文军, 赵莉华, 曾德华. 配电网树线放电故障容性电流转移消弧实验研究[J]. 中国电力, 2022, 55(11): 51-58.
[3]	杜振, 王志东, 江建平, 朱跃. 湿法脱硫系统PM_2.5排放特性分析[J]. 中国电力, 2021, 54(6): 153-158.
[4]	惠立锋. 燃煤电厂超低排放PM₁₀/PM_2.5实验室采样对比分析[J]. 中国电力, 2021, 54(2): 190-196.
[5]	陈炜, 任静, 武新芳, 于文英, 刘永生. 雾霾条件下光伏发电量预测的迭代优化与经济性分析[J]. 中国电力, 2021, 54(10): 223-230.
[6]	刘晓敏, 王乐乐, 黄见勋, 黄荣廷, 许积庄, 孔凡海, 谢建南, 李津津, 杨林军, 张发捷, 何川. 低低温除尘器和海水脱硫可凝结颗粒物有机组分排放特征研究[J]. 中国电力, 2020, 53(12): 263-269.
[7]	赵秀勇, 朱法华, 王圣, 孙雪丽, 徐静馨. 江苏省火电超低排放对环境空气中PM_2.5质量浓度影响模拟研究[J]. 中国电力, 2019, 52(9): 167-172.
[8]	张志中, 张杨, 杜振, 裴煜坤, 徐克涛, 朱跃. 600 MW燃煤机组SO₂、烟尘综合治理技术经济性分析[J]. 中国电力, 2019, 52(3): 36-42.
[9]	张建平, 陈栋, 江泽馨. PM_2.5分布指数对线管式电除尘器除尘效率的影响[J]. 中国电力, 2019, 52(10): 144-149.
[10]	陈坤洋, 郭婷婷, 王海刚, 胡冬. 超低排放改造后燃煤烟气净化设备协同脱汞潜力分析[J]. 中国电力, 2018, 51(6): 160-165.
[11]	李宁, 袁伟锋, 刘含笑, 赵琳, 许东旭, 骆建友, 郭滢. 基于电湍耦合凝并机制的PM_2.5捕集增效装置的开发及应用[J]. 中国电力, 2018, 51(6): 17-25.
[12]	吴金, 刘含笑, 郦建国, 赵琳, 许东旭, 骆建友, 赵胜清. 基于中试平台的低低温电除尘器深度试验研究[J]. 中国电力, 2018, 51(6): 11-16.
[13]	陶雷行, 翁杰, 李晓峰, 岳春妹, 王剑, 艾春美, 董飞英. 燃煤烟气超低排放全流程协同削减三氧化硫效果分析[J]. 中国电力, 2018, 51(3): 177-184.
[14]	王贵华, 朱斌帅, 张海珍, 韩海燕. 湿式电除尘器SO₃、HCl、HF脱除效率试验研究[J]. 中国电力, 2018, 51(12): 170-174.
[15]	李皓然, 刘含笑, 赵琳, 颜士娟, 冯国华, 方小伟. 湿式电除尘器性能测试方法及排放特征研究[J]. 中国电力, 2018, 51(10): 123-129.

模态框（Modal）标题

多种负荷工况下湿式电除尘器的PM2.5脱除效率及排放特征

Experimental Study on Fine Particulate Matter Removal Efficiency and the Emission Characteristics of WESP under Different Loads

RichHTML

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

多种负荷工况下湿式电除尘器的PM_2.5脱除效率及排放特征