煤中汞在电厂烟气中的排放特征

doi:10.11934/j.issn.1673-4831.2016.02.010

Abstract

Abstract:

To better understand characteristics of the system of emission of mercury with fume from coal-burning power plants, seven coal-burning power plants located in five different regions in Jiangsu Province were selected for in-situ sampling according to the USA EPA 30B approach for analysis of effects of mercury concentration in coal, generating units capacity and emission control facilities on the emission of mercury with fume. Results show that Hg concentration in the fume is not very much related to Hg content in the coal, but in significant negative exponential relation to the generating units capacity (P<0.01). It seems that the use of circulating fluidized bed boilers coupled with electrostatic precipitators is very efficient in removing mercury from the fume emitted from coal-burning power plants, reaching up to 98.9% in mercury removal efficiency, much higher than the efficiency of the use of the pulverized coal furnaces couples with electrostatic precipitators and lime-gypsum wet desulfurization equipment (67.5%-81.6%). It is, therefore, concluded that the technology of circulating fluidized bed boiler coupled with electrostatic precipitator is more efficient in removing mercury in fume emitted from coal-burning power plants.

Key words: coal, power plant, fume, mercury, emission characteristics, control facility

CLC Number:

ZHANG Xiao-yong, ZHANG Jin-chi, YU Mei-xiang, LI Hai-dong. Characteristics of Emission of Mercury With Fume From Coal-Burning Power Plant[J]. Journal of Ecology and Rural Environment, 2016, 32(2): 229-234.

References

[1] 喻敏,董勇,王鹏,等.氯元素对燃煤烟气脱汞的影响研究进展[J].化工进展,2012,31(7):1610-1614.
[2] 郑刘根,刘桂建,齐翠翠,等.中国煤中汞的环境地球化学研究[J].中国科学技术大学学报,2007,37(8):953-963.
[3] 武成利,曹晏,李寒旭,等.循环流化床燃煤锅炉中的汞迁移研究[J].燃料化学学报,2012,40(10):1276-1280.
[4] DONATELLO S,FERNÁNDEZ-JIMÉNEZ A,PALOMO A.An Assessment of Mercury Immobilisation in Alkali Activated Fly Ash(AAFA) Cements[J].Journal of Hazardous Materials,2012,213/214:207-215.
[5] 彭倩,朱慧可,钟寰,等.腐殖酸对汞污染稻田中甲基汞行为的影响[J].生态与农村环境学报,2015,31(7):748-752.
[6] 祝惠,阎百兴,李宏伟.松花江沉积物中总汞及汞形态的演化[J].生态与农村环境学报,2010,26(3):210-214.
[7] 李珊珊,曹广超,石平超,等.青岛城区土壤重金属元素空间分布及其现状评价[J].生态与农村环境学报,2015,31(1):112-117.
[8] 惠霂霖,张磊,王祖光,等.中国燃煤电厂汞的物质流向与汞排放研究[J].中国环境科学,2015,35(8):2241-2250.
[9] SONDREAL E A,BENSON S A,PAVLISH J H,et al.An Overview of Air Quality Ⅲ:Mercury,Trace Elements,and Particulate Matter[J].Fuel Processing Technology,2004,85(6/7):425-440.
[10] LUO G Q,MA J J,HAN J,et al.Hg Occurrence in Coal and Its Removal Before Coal Utilization[J].Fuel,2013,104:70-76.
[11] PAVLISH J H,HOLMES M J,BENSON S A,et al.Application of Sorbents for Mercury Control for Utilities Burning Lignite Coal[J].Fuel Processing Technology,2004,85(6/7):563-576.
[12] GIBB W H,ClARKE F,MEHTA A K.The Fate of Coal Mercury During Combustion[J].Fuel Processing Technology,2000,65/66:365-377.
[13] 黄勋,程乐鸣,蔡毅,等.循环流化床中烟气飞灰汞迁移规律[J].化工学报,2014,65(4):1387-1395.
[14] WU C L,CAO Y,DONG Z B,et al.Evaluation of Mercury Speciation and Removal Through Air Pollution Control Devices of a 190 MW Boiler[J].Journal of Environmental Sciences,2010,22(2):277-282.
[15] 殷立宝,徐齐胜,高正阳,等.生物质与煤混燃过程气态汞排放特性试验研究[J].中国电机工程学报,2013,33(17):30-36.
[16] 殷立宝,余亮英,徐齐胜,等.不同煤种对烟气中汞的形态和分布的影响[J].环境科学学报,2014,34(6):1567-1571.
[17] 唐念,盘思伟.大型煤粉锅炉汞的排放特性和迁移规律研究[J].燃料化学学报,2013,41(4):484-490.
[18] 王起超,沈文国,麻壮伟.中国燃煤汞排放量估算[J].中国环境科学,1999,19(4):318-321.
[19] 张军营,任德贻,徐德伟,等.煤中汞及其对环境的影响[J].环境科学进展,1999,7(3):100-101.
[20] 王圣,王慧敏,朱法华,等.基于实测的燃煤电厂汞排放特性分析与研究[J].环境科学,2011,32(1):33-37.
[21] 杨立国,段钰锋,王运军,等.锅炉容量对汞富集规律的影响[J].动力工程,2008,28(2):302-307.
[22] 俞美香,蔡同锋,宗叶平,等.基于实测的燃煤电厂烟气中汞排放水平浅析[J].环境监控与预警,2013,5(5):47-49.
[23] MEJI R.The Fate of Mercury in Coal-Fired Power Plants and the Influence of Wet Flue-Gas Desulphurization[J].Water,Air,and Soil Pollution,1991,56(1):21-33.
[24] 殷立宝,禚玉群,徐齐胜,等.中国燃煤电厂汞排放规律[J].中国电机工程学报,2013,33(29):1-9.
[25] 王运军,段钰锋,杨立国,等.湿法、半干法和循环流化床炉内脱硫技术的脱汞特性[J].燃烧科学与技术,2009,15(4):368-373.
[26] GALE T K,LANI B W,OFFEN G R.Mechanisms Governing the Fate of Mercury in Coal-Fired Power Systems[J].Fuel Processing Technology,2008,89(2):139-151.
[27] LÓPEZ-ANTON M A,PERRY R,ABAD-VALLE P,et al.Speciation of Mercury in Fly Ashes by Temperature Programmed Decomposition[J].Fuel Processing Technology,2011,92(3):707-711.
[28] YAMAGUCHI A,AKIHO H,ITO S.Mercury Oxidation by Copper Oxides in Combustion Flue Gases[J].Powder Technology,2008,180(1/2):222-226.
[29] 王晓刚,张益坤,丁峰,等.SCR催化剂对汞的催化氧化研究进展[J].环境科学与技术,2014,37(4):68-73.
[30] 许月阳,薛建明,王宏亮,等.燃煤烟气常规污染物净化设施协同控制汞的研究[J].中国电机工程学报,2014,34(23):3924-3931.
[31] 董勇,喻敏,王鹏,等.CaCl₂添加对热解煤中汞析出规律影响的实验研究[J].燃料化学学报,2014,42(1):31-36.
[32] WANG Juan,WANG Wen-hua,XU Wei,et al.Mercury Removals by Existing Pollutions Control Devices of Four Coal-Fired Power Plants in China[J].Journal of Environmental Science,2011,23(11):1839-1844.
[33] TIAN He-zhong,WANG Yan,CHENG Ke,et al.Control Strategies of Atmospheric Mercury Emissions From Coal-Fired Power Plants in China[J].Journal of the Air & Waste Water Management Association,2012,62(5):576-586.
[34] 胡长兴,周劲松,何胜,等.静电除尘器和湿法烟气脱硫装置对烟气汞形态的影响和控制[J].动力工程,2009,29(4):400-404.
[35] 刘迎晖,郑楚光,游小清,等.氯元素对烟气中汞的形态和分布的影响[J].环境科学学报,2001,21(1):69-73.

Characteristics of Emission of Mercury With Fume From Coal-Burning Power Plant

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