Distribution characteristics of minor and trace elements in fine particulate matters from a 660 MW coal-fired boiler

doi:10.3969/j.issn.0438-1157.2013.08.039

CIESC Journal ›› 2013, Vol. 64 ›› Issue (8): 2975-2981.DOI: 10.3969/j.issn.0438-1157.2013.08.039

Previous Articles Next Articles

Distribution characteristics of minor and trace elements in fine particulate matters from a 660 MW coal-fired boiler

WANG Chao¹, LIU Xiaowei¹, XU Yishu¹, WU Jianqun¹, WANG Jianpei¹, XU Minghou¹, LIN Xianmin², LI Haishan², XIA Yongjun²

1. State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China;
2. Electric Research Institute of Jiangxi Province, Nanchang 330096, Jiangxi, China

Received:2012-12-05 Revised:2013-03-07 Online:2013-08-05 Published:2013-08-05
Supported by:
supported by the National Natural Science Foundation of China(51276072,U1261204)and the National Basic Research Program of China(2013CB228501).

660MW燃煤锅炉细微颗粒物中次量与痕量元素的分布特性

王超¹, 刘小伟¹, 徐义书¹, 吴建群¹, 王建培¹, 徐明厚¹, 林显敏², 李海山², 夏永俊²

1. 华中科技大学煤燃烧国家重点实验室, 湖北武汉 430074;
2. 江西省电力科学研究院, 江西南昌 330096

通讯作者: 刘小伟
作者简介:王超(1988- ),男,博士研究生。
基金资助:
国家自然科学基金项目(51276072);国家重点基础研究发展计划项目(2013CB228501);煤炭联合基金重点项目(U1261204)。

Abstract

Abstract: Sampling system with Dekati Gravimetric Impacter(DGI)was positioned in front of the 2^# boiler ESP of a power plant in Nanchang and used to collect PMs,while the samples of raw coal and bottom ash were also taken.The massive particle size distribution of fly ash,the distribution characteristics of minor and trace elements in bottom ash and fly ash were measured and analyzed.The results indicate that the mass of PM_1.0 and PM_2.5 are 16.0%-17.4% and 46.9%-50.6% respectively.Na,Mg,P and S mainly enrich in submicron particles,and Al,Si,K,Ca,Ti and Fe mainly do in supermicron particles. With the decrease of particle size,the concentration of As,Cd,Cr and Pb increases,and the growth rate is higher for submicron particles than for supermicron particles,the concentration of Mn in different PM is similar.A large amount of As,Cd,Cr and Pb involves in the submicron PM,but Mn has no significant difference for different size PM particles.The volatileness of trace elements is As>Cd>Cr>Pb>Mn,and their emission factors under non-controlled conditions are listed in the paper.For PM_1.0,the order of emission ratio of trace elements is the same as volatility,i.e.,As>Cd>Cr>Pb>Mn.

Key words: coal-fired boiler, fine particulate matters, trace elements, minor elements, distribution characteristics

摘要： 应用承重撞击器(DGI)采样系统在南昌某电厂2^#锅炉电除尘器前进行颗粒物采集,并同时采集了原煤样和底灰样。对飞灰的质量粒径分布、底灰和飞灰中次量与痕量元素的分布特性进行了分析。结果表明PM_1.0和PM_2.5质量分别占PM₁₀质量的16.0%~17.4%和46.9%~50.6%;Na、Mg、P、S主要富集在亚微米颗粒物中,Al、Si、Ca、Ti、Fe、K主要富集在超微米颗粒物中;随着颗粒物粒径的减小,As、Cd、Cr、Pb的浓度逐渐增大,且在亚微米颗粒物中的增幅大于超微米颗粒物,Mn在各级颗粒物中浓度相近;As、Cd、Cr、Pb大量富集于亚微米颗粒物之上,Mn在各级颗粒物中富集特性无明显差异,且各痕量元素挥发特性存在以下规律:As>Cd>Cr>Pb>Mn;文中给出了无控制条件下痕量元素的排放因子,PM_1.0中各元素排放比例存在以下规律:As>Cd>Cr>Pb>Mn。

关键词: 燃煤锅炉, 细微颗粒物, 痕量元素, 次量元素, 分布特性

CLC Number:

X513

WANG Chao, LIU Xiaowei, XU Yishu, WU Jianqun, WANG Jianpei, XU Minghou, LIN Xianmin, LI Haishan, XIA Yongjun. Distribution characteristics of minor and trace elements in fine particulate matters from a 660 MW coal-fired boiler[J]. CIESC Journal, 2013, 64(8): 2975-2981.

王超, 刘小伟, 徐义书, 吴建群, 王建培, 徐明厚, 林显敏, 李海山, 夏永俊. 660MW燃煤锅炉细微颗粒物中次量与痕量元素的分布特性[J]. 化工学报, 2013, 64(8): 2975-2981.

References 24

[1]	Wang Yan(王妍),Li Jingwen(李京文).China's present situation of coal consumption and future coal demand forecast[J].China Population Resources and Environment(中国人口资源与环境),2008,18(3):152-155
[2]	Smith I M,Sloss L L.PM10/PM2.5-Emissions and Effects[M].London:IEA Coal Research,1998
[3]	Liu X W,Xu M H,Yao H,et al.Characteristics and composition of particulate matter from coal-fired power plants[J].Science in China(Series E:Technological Sciences),2009,85(6):1521-1526
[4]	Liu Xiaowei(刘小伟),Yao Hong(姚洪),Qiao Yu(乔瑜),et al.Characteristics and composition of particulate matter from coal-fired power plants[J].Journal of Engineering Thermophysics(工程热物理学报),2008,29(6):1055-1058
[5]	Liu Xiaowei(刘小伟),Yao Hong(姚洪),Cai Youmin(蔡攸敏),et al.Effect of density fractionation on formation characteristics of particulate matter during coal combustion[J].Journal of Chemical Industry and Engineering(China)(化工学报),2007,58(10):2567-2572
[6]	Li Yongwang(李永旺),Zhao Changsui(赵长遂),Wu Xin(吴新),et al.Aggregation mechanism of PM10 from coal combustion in uniform magnetic field[J].Journal of Chemical Industry and Engineering(China)(化工学报),2007,58(4):987-993
[7]	Xiong Guilong(熊桂龙),Yang Linjun(杨林军),Yan Jinpei(颜金培),et al.Removal of fine particles by heterogeneous condensation from wet-process desulfurized flue gas[J].CIESC Journal(化工学报),2011,62(10):2932-2938
[8]	Wang Ningling(王宁玲),Zhang Yong(张勇),Yang Yongping(杨勇平),et al.Analysis and optimized measures for the energy conservation and consumption reduction of 600 MW thermal power units[J].China Electric Power(中国电力),2009,42(9):55-57
[9]	Sui Jiancai(隋建才),Xu Minghou(徐明厚),Qiu Jihua(丘纪华),et al.Experimental study on emission characteristics and elemental composition of PM10 from a coal-fired boiler[J].Journal of Combustion Science and Technology(燃烧科学与技术),2006,12(5):432-437
[10]	Gao Xiangpeng(高翔鹏),Xu Minghou(徐明厚),Yao Hong(姚洪),et al.Experimental study on emission characteristics and formation mechanisms of PM10 from a coal-fired boiler[J].Proceedings of the CSEE(中国电机工程学报),2007,27(17):11-17
[11]	Meij R.Trace element behavior in coal-fired power plants[J].Fuel Processing Technology,1994,39(1/2/3):199-217
[12]	Xu Minghou,Yan Rong,Zheng Chuguang,et al.Status of trace element emission in a coal combustion process:a review[J].Fuel Processing Technology,2003, 85(2/3):215-237
[13]	Clarke L,Sloss L,et al.Trace Elements-Emissions from Coal Combustion and Gasification[M].London:IEA Coal Research(IEACR/011),1992
[14]	US National Research Council.Trace Element Geochemistry of Coal Resource Development Related to Environmental Quality and Health[M].Washington,DC,USA:National Academy Press,1980
[15]	Yi H H,Guo X M,Hao J M,et al.Characteristics of inhalable particulate matter concentration and size distribution from power plants in China[J].Journal of the Air & Waste Management Association,2006,56(9):1243-1251
[16]	Ahmaruzzaman M.A review on the utilization of fly ash[J].Progress in Energy and Combustion Science,2010,36(3):327-363
[17]	Bhattacharjee U,Kandpal T C.Potential of fly ash utilisation in India[J].Energy,2002,27(2):151-166
[18]	Liu X W,Xu M H,Yu D X,et al.Influence of mineral transformation on emission of particulate matters during coal combustion[J].Front.Energy Power Eng.China,2007,1(2):213-217
[19]	Raask E.The behaviour of potassium silicates in pulverized coal firing[J].VGB Mitteilungen,1968,48:348
[20]	Lockwood F C,Yousif S.A model for the particulate matter enrichment with toxic metals in solid fuel flames[J].Fuel Processing Technology,2000,65/66:439-457
[21]	Linak W P,Wendt J O L.Trace metal transformation mechanisms during coal combustion[J].Fuel Processing Technology,1994,39(1-3):173-198
[22]	Wang Qichao(王起超),Shao Qingchun(邵庆春),Zhou Zhaohua(周朝华).Grain size distribution of 16 trace elements in fly ash of burning coal[J].Environmental Pollution & Control(环境污染与防治),1998,5:37-41
[23]	Linak W P,Wendt J O L.Toxic metal emission from incineration:mechanisms and control[J].Prog.Energy Combusion Sci.,1993,19(2):145-185
[24]	Han Jun(韩军),Xu Minghou(徐明厚),Cheng Junfeng(程俊峰),et al.Study of trace element emission factor in coal-fired boilers[J].Journal of Engineering Thermophysics(工程热物理学报),2002,23(6):770-777

Distribution characteristics of minor and trace elements in fine particulate matters from a 660 MW coal-fired boiler

660MW燃煤锅炉细微颗粒物中次量与痕量元素的分布特性

PDF (PC)

Knowledge

Cited

Abstract

Cite this article

share this article

References 24

Related Articles 9

Recommended Articles

Metrics

Comments

[1]	XU Xiaoxiao, ZHANG Shijie, LI Yi, LIU Chao. Study on phase distribution characteristics of gas-liquid two-phase flow in micro-channel flat T-junction [J]. CIESC Journal, 2021, 72(4): 2057-2064.
[2]	Wei WEI, Xiucai LI, Fengzhong SUN. Research on effect of ultrafine ash particles on acid dew point and acid condensation for coal-fired boilers [J]. CIESC Journal, 2020, 71(7): 3258-3265.
[3]	Xiaohang LI, Yun LIU, Yinjiao SU, Yang TENG, Yanjun GUAN, Kai ZHANG. Difference of fly ash characteristics from PC and CFB boilers and its effect on mercury adsorption capability [J]. CIESC Journal, 2019, 70(3): 1075-1082.
[4]	XU Xiaoxiao, XIAO Jiumin, CHEN Long, LIU Chao. Establishment and verification of a two-phase flow distribution model in a parallel flow heat exchanger [J]. CIESC Journal, 2018, 69(5): 1938-1945.
[5]	ZHAO Shilin, DUAN Yufeng, DING Yanjun, GU Xiaobing, DU Mingsheng, YAO Ting, CHEN Cong, LIU Meng, LÜ Jianhong. Distribution, co-removal and emission characteristic of trace elements in 320 MW coal-fired power plant [J]. CIESC Journal, 2017, 68(7): 2910-2917.
[6]	XIANG Baixiang, YANG Hairui, LÜ Junfu. Kinetic modelling and experimental studies on SO₃ generation in flue gas for coal-fired boiler [J]. CIESC Journal, 2017, 68(7): 2896-2909.
[7]	ZHAO Zhifeng, DU Qian, DONG Heming, SU Lipeng, ZHAO Guangbo, LÜ Donghui, WANG Min, GAO Jianmin, GUO Xin, XU Li, ZHAO Laifu. Influence of wet flue gas desulfurization devices on PM_2.5 emission characteristics of coal-fired boilers [J]. CIESC Journal, 2017, 68(11): 4261-4271.
[8]	HE Lu, WANG Li, MA Yue, LI Shuyuan. Volatility and catalysis of trace elements during oil shale pyrolysis [J]. CIESC Journal, 2017, 68(10): 3912-3922.
[9]	ZHAO Zhifeng, DU Qian, ZHAO Guangbo, GAO Jianmin, DONG Heming, CAO Yang, HAN Qiang, SU Lipeng, YUAN Pengfei. Field experimental research on PM_2.5 generation and emission characteristics of pulverized coal and CFB boilers in power plants [J]. CIESC Journal, 2015, 66(3): 1163-1170.