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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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300mw燃煤电厂esp和wfgd对烟气汞的脱除特性
, PP. 491-498
Keywords: 燃煤电厂,汞质量平衡,esp,wfgd,汞形态,脱汞效率
Abstract:
？采用燃煤电厂汞形态浓度取样测试ohm标准方法,对一座300mw燃煤电厂静电除尘器(esp)和湿法脱硫装置(wfgd)前后烟气进行了等速取样.使用美国leemanlabshydraaa全自动汞分析仪检测烟气中的汞形态浓度.采集了固体样品,包括入炉煤、底渣、esp电场灰、脱硫剂石灰石、脱硫产物石膏等,使用意大利milestone公司生产的dma80全自动汞分析仪检测固体样品中的汞浓度.计算锅炉系统的汞质量平衡,获得了esp和wfgd前后烟气的汞形态浓度和分布规律,分析讨论了影响烟气汞形态转化的各种影响因素.结果表明,燃煤烟气中气态单质汞hg0和气态氧化汞hg2+占到总汞量的95%.煤渣中的汞可忽略不计;esp对颗粒态汞hgp的脱除效率达到95%以上,但是对hg0和hg2+脱除率不高.esp对烟气总汞hgt脱除效率为12.77%~17.38%;wfgd对hg2+的脱除率达到79.93%~90.53%,但是对hg0没有脱除效果,其含量不仅没有下降反而有少量上升,说明有部分hg2+在wfgd中被还原成hg0.wfgd对hgt脱除效率为9.68%~29.36%;该电厂现有污染控制设备esp+wfgd可以脱除全部的hgp和大部分hg2+,但是由于部分hg2+的还原使得hgt的脱除效率在25.38%~38.38%.综合来看,该燃煤电厂的污染物控制设备在进行除尘和脱硫的同时,对汞的脱除率并不高,与燃煤中的氯含量较低有关.
| [1] | 蒋靖坤,郝吉明,吴烨,streetsdg,段雷,田贺忠.中国燃煤汞排放清单的初步建立[j].环境科学,2005,26(2):34-39.(jiangjing-kun,haoji-ming,wuye,streetsdg,duanlei,tianhe-zhong.developmentofmercuryemissioninventoryfromcoalcombustioninchina[j].environmentalscience,2005,26(2):34-39.)
|
| [2] | 胡长兴,周劲松,何胜,骆仲泱,岑可法.全国燃煤电站汞排放量估算[j].热力发电,2010,39(2):1-4.(huchang-xing,zhoujin-song,hesheng,luozhong-yang,cenke-fa.estimationofmercuryemissionfromcoal-firedpowerplantsinchina[j].thermalpowergeneration,2010,39(2):1-4.)
|
| [3] | tianhz,wangy,xuezg,chengk,quyp,chaifh,haojm.trendandcharacteristicsofatmosphericemissionsofhg,as,andsefromcoalcombustioninchina,1980-2007[j].atmoschemphys,2010,10(9):11905-11919.
|
| [4] | usepa.standardsofperformancefornewandexistingstationarysources:electricutilitystreamgeneratingunits[s].washington,d.c.:u.s.epa,march2005.
|
| [5] | 王运军.燃煤烟气汞形态转化及汞吸附机理研究.南京:东南大学博士学位论文,2010.(wangyun-jun.studyonmercuryspeciationtransformationandadsorptionmechanismincoal-firedfluegas.nanjing:southeastuniversity,2010.)
|
| [6] | yokoyamat,asakurak,matsudah,itos,nodan.mercuryemissionsfromacoalfiredpowerplantinjapan[j].scitotalenviron,2000,259(1-3):97-103.
|
| [7] | 齐立强.燃煤锅炉微细颗粒电除尘特性及电场逃逸机理的研究.北京:华北电力大学博士学位论文,2006.(qili-qiang.studyontheelectrostaticprecipitatabilityandescapemechanismofthefineparticulatefromelectrostaticprecipitatorofcoal-firedboilers.beijing:northchinaelectricpoweruniversity,2006.)
|
| [8] | richardsonmk,blythegm,goldend.mercurystabilityinfgdbyproducts.in:combinedpowerplantairpollutantcontrolmegasymposium,washington,d.c.,may,2003.
|
| [9] | changjc,ghorishisb.simulationandevaluationofelementalmercuryconcentrationincreaseinfluegasacrossawetscrubber[j].environscitechnol,2003,37(24):5763-5766.
|
| [10] | goodarzif.characteristicsandcompositionofflyashfromcanadiancoal-firedpowerplants[j].fuel,2006,85(10/11):1418-1427.
|
| [11] | wusj,uddima,sasaokae.characteristicsoftheremovalofmercuryvaporincoalderivedfuelgasoverironoxidesorbents[j].fuel,2006,85(2):213-218.
|
| [12] | zhengyj,jensenad,windelinc,jensenf.reviewoftechnologiesformercuryremovalfromfluegasfromcementproductionprocesses[j].progenergycombustsci,2012,38(5):599-629.
|
| [13] | usepa.astudyofhazardousairpollutantemissionsfromelectricutilitysteamgeneratingunits:finalreporttocongress,epa-453/r-98-004a.washington,d.c.:u.s.epa,february1998.
|
| [14] | streetsdg,haojm,wuy,jiangjk,chanm,tianhz,fengxb.anthropogenicmercuryemissionsinchina[j].atmosenviron,2005,39(40):7789-7806.
|
| [15] | wuy,wangsx,streetsdg,haojm,chanm,jiangjk.trendsinanthropogenicmercuryemissionsinchinafrom1995to2003[j].environscitechnol,2006,40(17):5312-5318.
|
| [16] | wangsx,zhangl,ligh,wuy,haojm,pirronen,sprovierif,ancoramp.mercuryemissionandspeciationofcoal-firedpowerplantsinchina[j].atmoschemphys,2010,10(3):1183-1192.
|
| [17] | usepa.standardtestmethodforelemental,oxidized,particle-bound,andtotalmercuryinfluegasgeneratedfromcoal-firedstationarysources(ontariohydromethod)[s].washington,d.c.:u.s.epa,september2001.
|
| [18] | kilgroejd,sedmancb,srivastavark,ryanjv,leecw,thorneloesa.controlofmercuryemissionsfromcoal-firedelectricutilityboilers:interimreport,epa-600/r-01-109.washington,d.c.:u.s.epa,december,2001.
|
| [19] | kellies,caoy,duanyf,lilc,chup,mehtaa,cartyr,rileyjt,panwp.factorsaffectingmercuryspeciationina100-mwcoal-firedboilerwithlow-noxburners[j].energyfuels,2005,19(3):800-806.
|
| [20] | millersm,nesssr,webergf,ericksonta,hassettdj,hawthornesb,katrinakka,louiepk.acomprehensiveassessmentoftoxicemissionsfromcoal-firedpowerplants:phaseiresultsfromtheu.s.departmentofenergystudy.grandforks,northdakota:energyandenvironmentalresearchcenter(eerc),universityofnorthdakota,september1996.
|
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