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ID:23516508
大小:7.52 MB
页数:66页
时间:2018-11-08
《闪速炉余热锅炉多场耦合数值模拟及结构优化》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、ABSTRACTThewasteheatboilerforcoppernashsmeIti“gisakeyfacili可int11esmeltingPmcess,andita矗色ctsdirectlythenomlaloperationofnashsmel“ngfL
2、mace.Som。problemssuchasslaggi“gaIldabrasionoccurusua¨yjnwasteheacboiJer丁herefo忙,£henume打cajsimuIadonwasappliedtomodelthet}lennalprocessandtoanalyzeth
3、ereasonsfortheproblemsint
4、lewasteheat,whichwillprovidetheoreticalguid,mceforthestnlcmraIoDtimization丁bscudyrbe小e舯a】p!Dcessin
5、bewas!ebeatboj】e‘slar】dard女一£model,DOradiationmodelanddiscretephasemodelwerechosentoperfjrmgas—solidcouplingsimulationThemainmissionandcOnclusionsareasfbllows
6、:(1)withrespecttothedesign吼nJcnjre,thenowandheattransferDmcessinthewasteheatboilerweresimulated.a11dnow行eld,temperatureneldandpa^icle仃aceswereanalyzed.Therelativee巾3rofpredictedteInperaturesislessto10%,comparedwithtestValuesintIlemnningdevices,whichvalidatesthereliabilityofthemodel.
7、(2)TheresultsoftemperanJreandnowneldinabovesimulationshow山attIlenuenowsdirectlytowardthetopoftheboilerduet0thest兀lctureofthenueduct.Thesmokea11ddustwitllhightemperamreisinmoltenstateTheslagwillbefo兀TIediftheycontactthewaterwallwithlowtemperatLlreTheslagpositionisaccordantwiththatinr
8、ealoDeration(3)ThetransferprocesswassimulatedfortIIetwoimprovedschemespresentedbyt11eenterp^se,andcheiradvantagesaIlddisadvantagesoftlletwoschemeswerecomparedThe前r虬onewaschosenconside^ngt11erequircmentoft11eboiIerPowertomeettheintensi母i“gproductionof日ashsmelting.nepositionsofsulpha眦
9、ionairnodeswereoptimized.(4)Thenrstba棚eposition,t11esecondbafnoPositlonandtheexcensjonleng出of出eho—zon缸jentraflceⅥ℃reopt;mjzedbyunjf。rmdesjgnmethodTheregressionequation,which拍止est
10、leoutlettemperatIlreoftlleradiatjonchamberasdependentvalue,wasesIablishedlI中南大学硕±≠Ⅱ论Zaccordingtostepwise
11、regressionanal)slsFor山egivenconditions,theoptimalparametersarethatthedistancebeMeenthebaffle1a11dthe疳ontwaIlis12m.t}ledistancebetweent}leba用e2andthe仔ontwallis32m.andtheextensionleng山aboutthehodzontalentranceis2m.KEYWORDS:coppernashsmelti”&wa毗eheatboiler,nume^calsimulatjon,unifonndes
12、ign巾ethod,optimize中
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