Serial Negative Synergy Effects in Synergetic Treatment for Flue Gas Pollutants

doi:10.11930/j.issn.1004-9649.202005104

Abstract

Abstract: With the applications of synergetic treatment technology for flue gas pollutants increasingly popular in coal-fired power plants, the adverse effects among individual equipment in the synergetic treatment process are becoming more prominent such that the decline of equipment capacity or incremental emission of pollutants are also observed. In this paper, such negative synergy effects are analyzed, and a 350 MW coal-fired power unit is studied by means of performance testing, laboratory testing, operation diagnosis and other methods. The results show that there exists serial negative synergy effects, that is, the negative synergy effects of upstream equipment continuously encroach on the pollutants treatment capability of themselves or downstream equipment, which eventually causes insufficient pollutants treatment capability. At last, suggestions on controlling and elimination of the negative synergy effects are also presented.

Key words: flue gas pollutants, synergetic treatment, negative synergy effect, serial effect, ammonium bisulfate, corrosion, fouling, occlusion on limestone

GAO Peirong, YAN Zhiren, YANG Jun, MA Xiaohua, ZHAI Mingqiu. Serial Negative Synergy Effects in Synergetic Treatment for Flue Gas Pollutants[J]. Electric Power, 2020, 53(12): 270-276.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.202005104

https://www.electricpower.com.cn/EN/Y2020/V53/I12/270

References

[1] 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
[2] 陆军, 刘永强, 周飞, 等. 高硫煤机组低低温省煤器SO₃协同脱除试验研究[J]. 热力发电, 2016, 45(12): 30-36, 55
LU Jun, LIU Yongqiang, ZHOU Fei, et al. Experimental research on simultaneous removal of SO₃ by low-low temperature economizer in units firing high-sulfur coal[J]. Thermal Power Generation, 2016, 45(12): 30-36, 55
[3] 张军, 郑成航, 张涌新, 等. 某1 000 MW燃煤机组超低排放电厂烟气污染物排放测试及其特性分析[J]. 中国电机工程学报, 2016, 36(5): 1310-1314
ZHANG Jun, ZHENG Chenghang, ZHANG Yongxin, et al. Experimental investigation of ultra-low pollutants emission characteristics from a 1 000 MW coal-fired power plant[J]. Proceedings of the CSEE, 2016, 36(5): 1310-1314
[4] GAO B, FU Z Q, SHEN P, et al. Study on the synergistic effect of the measures for air pollution reduction[J]. Advanced Materials Research, 2012, 610/611/612/613: 1628-1633.
[5] WANG S X, ZHANG L, WU Y, et al. Synergistic mercury removal by conventional pollutant control strategies for coal-fired power plants in China[J]. Journal of the Air & Waste Management Association, 2010, 60(6): 722-730.
[6] 郑方栋, 李文华, 赵敏, 等. 全负荷脱硝氨逃逸率与SO₃转化率的变化[J]. 中国电机工程学报, 2017, 37(9): 2607-2614
ZHENG Fangdong, LI Wenhua, ZHAO Min, et al. Change of ammonia escape rate and SO₃ conversion rate of SCR denitration in full load range[J]. Proceedings of the CSEE, 2017, 37(9): 2607-2614
[7] SCHREIFELS J J, WANG S X, HAO J M. Design and operational considerations for selective catalytic reduction technologies at coal-fired boilers[J]. Frontiers in Energy, 2012, 6(1): 98-105.
[8] 王乐乐, 孔凡海, 何金亮, 等. 超低排放形势下SCR脱硝系统运行存在问题与对策[J]. 热力发电, 2016, 45(12): 19-24
WANG Lele, KONG Fanhai, HE Jinliang, et al. Difficulties and countermeasures of SCR denitration system operation in ultra low emission situation[J]. Thermal Power Generation, 2016, 45(12): 19-24
[9] MENASHA J, DUNNRANKIN D, MUZIO L, et al. Ammonium bisulfate formation temperature in a bench-scale single-channel air preheater[J]. Fuel, 2011, 90(7): 2445-2453.
[10] 姜烨, 高翔, 吴卫红, 等. 选择性催化还原脱硝催化剂失活研究综述[J]. 中国电机工程学报, 2013, 33(14): 18-31, 13
JIANG Ye, GAO Xiang, WU Weihong, et al. Review of the deactivation of selective catalytic reduction DeNO_x catalysts[J]. Proceedings of the CSEE, 2013, 33(14): 18-31, 13
[11] 颜鲁, 李秀财, 孙奉仲, 等. SCR脱硝伴生硫酸氢铵对飞灰颗粒特性影响的实验研究[J]. 中国电机工程学报, 2019, 39(10): 2987-2994
YAN Lu, LI Xiucai, SUN Fengzhong, et al. Experimental study on the effect of ammonium bisulfate on particle characteristics of fly ash during the SCR denitrification process[J]. Proceedings of the CSEE, 2019, 39(10): 2987-2994
[12] 张宇博, 延禹, 胡芳芳, 等. 低低温系统中粉尘颗粒团聚特性研究[J]. 热力发电, 2019, 48(1): 36-42
ZHANG Yubo, YAN Yu, HU Fangfang, et al. Experimental study on agglomeration characteristics of ash particles in low-low temperature flue gas system[J]. Thermal Power Generation, 2019, 48(1): 36-42
[13] MUZIO L, BOGSETH S, HIMES R, et al. Ammonium bisulfate formation and reduced load SCR operation[J]. Fuel, 2017, 206: 180-189.
[14] 吴斌, 张清福, 王建强, 等. 燃用麻家梁煤锅炉脱硫浆液中毒原因分析及治理[J]. 热力发电, 2015, 44(9): 71-75
WU Bin, ZHANG Qingfu, WANG Jianqiang, et al. Reason analysis and treatment for desulfurization slurry poisoning during combustion of Majialiang coal[J]. Thermal Power Generation, 2015, 44(9): 71-75
[15] 潘丹萍, 吴昊, 鲍静静, 等. 电厂湿法脱硫系统对烟气中细颗粒物及SO₃酸雾脱除作用研究[J]. 中国电机工程学报, 2016, 36(16): 4356-4362, 4519
PAN Danping, WU Hao, BAO Jingjing, et al. Removal effect of wet flue gas desulfurization system on fine particles and SO₃ acid mist from coal-fired power plants[J]. Proceedings of the CSEE, 2016, 36(16): 4356-4362, 4519
[16] 李志超, 段钰锋, 王运军, 等. 300 MW燃煤电厂ESP和WFGD对烟气汞的脱除特性[J]. 燃料化学学报, 2013, 41(4): 491-498
LI Zhichao, DUAN Yufeng, WANG Yunjun, et al. Mercury removal by ESP and WFGD in a 300 MW coal-fired power plant[J]. Journal of Fuel Chemistry and Technology, 2013, 41(4): 491-498