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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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emissionsanddepositpropertiesfromcombustionofwoodpelletwithmagnesiumadditives
, PP. 530-539
tomas, persson, jochen, riedel, jonas, berghel, ulf, bexell, kaung, myat, win
Keywords: softwoodpellets,magnesium,additives,particleemissions,depositformation
Abstract:
？thisworkstudiestheamountofgaseousandparticleemissionsanddepositsonheatexchangersurfacesinaboilerfiredwithcommerciallyavailablepelletsandwithpelletsprimedwithmagnesiumoxideandmagnesiumhydroxide.thecombustionexperimentswereperformedonaresidentialboilerof20kw.substratesplacedintheheatexchangerwasanalysedwithsem-edx-mappingtoevaluatethechemicalcompositionofthedeposits.theresultsshowthatparticleemissions(pm2.5)usingtheadditivesincreasedbyabout50%andthemassofthedepositsinthefluegasheatexchanger(excludinglooseflyash)increasedbyabout25%comparedtothecombustionofpelletswithoutadditives.theamountofadditiveswasfoundtobeeighttimeshigherthantheamountofthemainalkalimetalspotassium(k)andsodium(na)whichleadstotheassumptionthattheadditiveswereoverdosedandthereforecausedtheproblemsreported.thesemanalysisofthesubstratesplacedinthefluegasheatexchangerindicatethatthedepositsofsodium(na),potassium(k),chlorine(cl)andsulphur(s)decreaseusingtheadditives.ifthiswasduetotheexpectedchemicalreactionsorduetothelooseflyashcoveringthesubstratesafterthetest,couldnotbedeterminedinthisstudy.
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