以半干法為基礎(chǔ)的新型燃煤汞排放控制機(jī)理及試驗(yàn)研究.pdf

1、浙江大學(xué)碩士學(xué)位論文以半干法為基礎(chǔ)的新型燃煤汞排放控制機(jī)理及試驗(yàn)研究姓名：午旭杰申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：工程熱物理指導(dǎo)教師：周勁松駱仲泱20040201ABSTR^CTABSTRACTAtpresent，theresearchofmercuryemissionandcon打olincoal—firedpowerplantwasinthebeginningprocessespeciallyinChinaThemercurytransfor

2、mationmechanismincoal—firedpowerplantandmecurycontrolinfluegaswerestudiedinthispaperbasedonexperimentalandtheoreticalanalyseThestudiesoftheinfluenceofcontrolequipmenttogeneralpollutiontomercuryemissionandmercurytransform

3、ationmechanismincirculatingfluidizedbedwereconductedata6MWstone—coalfiredplantTheexpefimenmldatashowedthatthespeciationofmercuryoccurringunderthesystemswassimilartothepresentinreferences；thedustershavetheabilitytodecreas

4、ethemercuryemissionAbenchscaleexperimentalisconductedtostudyeffectoffluegascompositiononthespeciationdistributionofmercuryinsimulatedfluegasstreams，suchasHCI，S02andN0nlemechanismsandrateofelementalmercury∞gu)capturebyact

5、ivatedcarbonsandsomeothermodifiedchemicallysorbentshavebeenstudiedusingabenchscalefixedbedapparatusWehavescreenedoutsomeefficientsorbcntssuchasactivatedcarbonsweroimpregnatedwithMn02，F(xiàn)eCl3andsulfurat600℃，zeolitewereimpre

6、gnatedwithMm02roseitewereimpregnatedwithMn02，F(xiàn)eCl3，andbentonitewereimpregnatedwithMn02Theeffectsoffluegascomposition，inletmercuryconcentration，adsorptiontemperatureandratioofC／／Igwereinvestigatedtodeterminetheabilitieste

7、movemercuryinsimulatedfluegasstreamsSemi—drymercurycontrolmethodthatinjectedSOrbentsandwaterorsomeoxidizersitlfluegasforHgcontrolincoal—firedpowerplantWaSdevelopedinbench—scaleandpilot—scaleATheoreticalmodelwasdevelopedt

8、opredictmercuryremovalinductbasedonactivatedcarboninjectionforHgcontrolasdeterminedinpilotscaleexperimentsatdifierentconditionsThesimulationresultsindicatedthatthemodeliscapableofdescribingthetestdataBaseonthemodelpredic

9、tions，loweroperatingtemperature，higherC／Hgratioandmercuryinletconcentration，andsmallersorbentsparticlesizeshouldbeutilizedtoachievehigherHgremovalinthissystemKeywords：mercurycoal—firedpowerplants，mercurycontrol，semidryad