欢迎来到天天文库
浏览记录
ID:52354641
大小:780.16 KB
页数:7页
时间:2020-03-26
《复杂烟气条件下太西活性焦脱除Hg0的实验研究.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第40卷第1O期燃料化学学报Vol_40No.1O2012年1O月JournalofFuelChemistryandTechnologyOct.2O12文章编号:0253-2409(2012)10-1269-07复杂烟气条件下太西活性焦脱除Hg~的实验研究张海茹,刘浩,王萌,吴昊,杨宏昊(南京师范大学能源与机械工程学院,江苏南京210042)摘要:为了解复杂烟气条件下活性焦吸附剂的脱汞特性,利用汞渗透管和主要气体成分模拟复杂烟气,在实验室规模的固态吸附剂汞吸附效能测定系统上,进行了太西活性焦吸附单质汞的实验研究,并采用Fr一1R对活性焦表面进行了光谱表征。结果表明,在活性焦表面
2、存在各种含氧官能团;在CO:/N/O/SO/Hg。烟气体系中,当SO2加入量为400、855、1520mI./m时,出口汞浓度分别为36、43、48m。,SO:对系统吸附Hg。的能力有抑制作用;在CO/N2/O/NO/Hg。烟气体系中,较低浓度的NO对Hg。脱除有抑制作用,而高浓度值的NO抑制作用减弱;在CO/N/O/NO/SO/Hg。烟气体系下,提高NO浓度对Hg。脱除有一定的促进作用,而提高SO浓度初期促进汞的脱除,后期则表现为抑制作用。关键词:活性焦;脱汞;复杂烟气条件;吸附中图分类号:TQ546.5文献标识码:AExperimentalstudyonmercuryrem
3、ovalbyTaixiactivatedcokeundercomplexatmosphereoffluegasesZHANGHai-ru,LIUHao,WANGMeng,WUHao,YANGHong—min(SchoolofEnergyandMechanicalEngineering,NanjingNormalUniversity,Nanjing210042,China)Abstract:Inordertoclarifytheadsorptioncharacteristicofactivatedcokeundercomplexatmosphereoffluegases.aser
4、iesoftestswereconductedwithabench.SCalefixedbedreactor.ThesimulatedfluegaswaspreparedbymixingmaincompositionoffluegaswithmercuryVaporsgeneratedthroughpermeationtube.ThesurfacepropertieswerecharacterizedbyFT—IR.Theresultsshowthattheperformanceofmercuryremovalisrelatedt0thesurfacechemistryofac
5、tivatedcoke,andtheoxygen—containingfunctionalgroupsaretheimportantfactorafectingtheadsorptionandcatalysisofHg”.TheadsorptionperformanceofHgwithactivatedcokeisinfluencedbySOobviouslyandinhibitionisobservedintheremovalprocess.WithincreasingconcentrationofSO,。from400。855to1520mL/m。theconcenu’at
6、ionofHg”attheoutletofthereactorincreasedfrom36,43to48g/m.ThecompleximpactofNOontheadsorptivecapacityofHg”isfoundthatNOwithlowerconcen仃ationpromotestheadsorptionofelementalmercurywhileinhibitsitathighervalueinCO,/N./O。/N0/Hgsystem.TheincreasingconcentrationOfNOwiththeStationaryconcentrationof
7、SOhasapromotiontomercuryadsorptionwhileO,,NO,SO,andHg”existssimultaneously.However,theincreasingconcentrationOfSOcouldenhancethemercuryadsorptionatinitialstageandpreventsitatthelatterstage.Keywords:activatedcoke;mercuryremoval;complexatmosphereoffl
此文档下载收益归作者所有