集中供熱式生物質(zhì)氣化鍋爐的設計及理論研究.pdf

1、東北林業(yè)大學碩士學位論文集中供熱式生物質(zhì)氣化鍋爐的設計及理論研究姓名：李燕東申請學位級別：碩士專業(yè)：機械工程指導教師：王述洋201006AbstractOurcountryisfacingaseriesofenergyandenvironmentalissueswithenergyshortagesandenvironmentaldeterioration，inordertoachieveoureconomic，socialandenv

2、ironmentalsustainabledevelopment，tofindalternativestofossilfuelshasbecomeverynecessaryItisveryrichinbiomassresourcesinChinaaccordingtorelevantstatisticsthatChinacanproducedabout700milliontonsofagriculturalwasteeachyearor

3、aboutmorethan300milliontonsofstandardcoalInChinamanytownshipenterprisesandinstitutionsaremainlyinsmallscalecoalfiredboilersforheatingTheseboilersarebasicallyoutofthecityanddoesnotmeetthenationalemissionstandardsTherearee

4、vensomeclassrooms，dormitoriesstillusecoalstovesforheatingSOthatnotonlyincreasesecurityrisks，butalsoincreasedthepressureontheenvironmentOntheotherhandrichstrawresourcesinruralsWash’tdisposedtousebutwastedonnothing，thesame

5、timecausingenvironmentalpollutionTherefore，basedontheheatingissueoftownshipenterprisesandinstitutions，thispaperistoexploreawaytationaluseofbiomasstoaddressthecentralheatingmitigationofruralenergyshortagesproblemsThepaper

6、isbasedon”2007NationalSparkProgram(2007EAl05008)”researchprojectstodesignabiomassgasificationcombustionsteamboilerinwhichweusethefuelpelletBasedonanalysisandcomparisonofgrate’Svariouscharacteristics，wechosethelevelrecipr

7、ocatinggrateascombustionequipmentofboileranddesignedtheoveralllayoutoftheboiler；Basedonbiomassfuelpelletcombustioncharacteristiesandthermalparameters，wedesignedindetailandcalculatedtheformandvolumeoftheboilerfurnace，grat

8、eareaconvectiontubebundles，aswellastheboilerauxiliaries：InaccordalicewithGB／T165081996”shellboilerpressurepartsintensitycalculation“wedesignedtheboilerdrum，tubeplates，manholeandhandhole，andmadestressanalysistomanholeandp

9、ipeplateusingANSYSSofhⅣareandtheintensityevaluationisdonewiththeapplicationofthestress1inearprinciplefromdifferentpathsinthestressconcentrationregionofthecomponentsunderstresstoassurethesafetyoftheboilershellneoveralldes

10、ignideaistoincreasethefurnaceheiglltthatcanenhancegasificationlevelofpelletfuelBystrengtheningandcontrollingthesupplyofsecondaryairwhichirlereasedisturbanceeffectonvolatilesofthebiomassandextendingthevolatileresidence‘ti

11、meinthefumace，toensurethatsecondaryairandgasificationproductsareuniformlyandadequatelymixedgasificationcombustionintensified，gottothepointofcleancombustionandimprovingoftheboiler’Scombustionefficiencyandfinallytheefficie