中空纤维膜反应器结合芬顿试剂脱除燃煤烟气中的Hg_0

Vol.43No.(2017-10华东理工大学学报（自然科学版JournalofEastChinaUniversityofScienceandTechnology(NaturalScienceEdition.)647文章编号！文章编号！006-3080(2017)05-0647-08DOI：10.14135$.cnki.1006-3080.2017.05.008中空纤维膜反应器结合芬顿试剂脱除燃煤烟气中的H5于明磊S马良、张艳红、汪华林12!于新海3!杨雪晶12(华东理工大学1.国家环境保护化工过程环境风险评价与控制重点实验室；(2.化学工程联合国家重点实验室；3.机械与动力工程学院，上海200237)摘要：摘要：将中空纤维膜反应器和芬顿试剂结合脱除烟气中的Hg0。研究了不同参数以及SO2、NO和O2等杂质气体对Hg0脱除的影响。结果表明：随着H2O2浓度、Fe2+浓度、溶液初始pH和温度的增加，Hg0脱除率先增加后降低，其最佳工作条件是H2O2浓度为6mmol/L，Fe2+浓度为9mmol/L，溶液初始pH为2.5,温度为20增大液气比和通过减小气相流量增大停留时间均对Hg0脱除有增强作用，当液气比超过0.11时，Hg0的脱除率不再增加；当气相流量为0.6L/min时，Hg0脱除率超过85%;SO2、2、NO对Hg0的脱除有抑制作用，O2对Hg0的脱除几乎没有影响；还测定出温度20'下中空纤维膜反应器的比相界面积a=270.29m—1和传质动力学参数紅=8.13X10—4m/s，J=0.786X10—6mo)(m2*s*Pa)。)。关键词：关键词：中空纤维膜反应器（芬顿反应（脱汞中图分类号中图分类号：X511文献标志码：文献标志码：ARemovalofHg°fromSimulatedFlueGasbyFentonProcessinAHollowFiberReactorYUMing-1*%MALiang1%ZHANGYan-hong1%WANGHua-Un1,2%YUXm-hat3%YANGXue-jmg1%(1.StateKnvironmenta-ProtectionKeyLaboratoryofKnvironmenta-RiskAssessmentandContro-onChemica-Process;2.StateKeyLaboratoryofChemica-Engineering;3.SchoolofMechanicalandPowerEngineering%EastChinaUniversityofScienceandTechnology%Shanghai200237?China')Abstract：AnovelhollowfiberreactorwasusedtoremoveHg0fromsimulatedfluegasbyFentonprocess.TheeffectsofseveralparametersandimpuritygasessuchasSO2+NOandO2onremovalefficiencyofHg0byFentonprocesswereinvestigated.TheresultsindicatedthattheHg0removalefficiencyincreasedfirstandthendecreaseduponincreasingH2O2concentration,Fe2dconcentration,initialpHvalueofsolution,andtemperature.Theoptimumconditionswere：H2O2concentrationof6mmol/L%Fe2dconcentrationof9mmol/L,initialpHvalueofsolutionof2.5%andtemperatureof20〇C.Theincreaseinliquid-gasratioandtheresidencetime(thedecreaseofgasflowrate)enhancedtheremovalofHg0，whiletheremovalefficiencydidn?tincreaseanymorewhentheliquid-gasratiowasover0.11.Hg0removalefficiencyexceeded85%whengasflowratewas0.6L/min.SO2andNOcaninhibittheremovalofHg0%whileO2hasnoobviousimpactonHg0removalefficiency.Inthehollowfiberreactor,thespecificsurfacearea(a)andmasstransfer-r