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1、双管板换热器在多晶硅生产中的应用InnerMongoliapetrochemicalindustry.2011,009TheapplicationofthedoubletubeplateheatexchangerinpolysiliconproductionZhangDangwei.・(InnerMongoliaHohhotshenzhousiliconindustrylimitedliabilitycompany)Abstract:intheproductionofpolycrystallinesilicon,thematerials(TCS,DCS,STC)willreac
2、twithwatertoproducesilicicacid(bisilicicacid)HC1,bowCorrosionandblockage,whichseriouslyaffecttheproductionandqualityofpolysilicon,alsocauseseriousproductionaccidents,andtheuseofalargenumberofdouble-tubeplateheatexchanger・Keywords:polysilicon;TCS,DCS,onSTC;DoubletubeplateheatexchangerStructur
3、edesign;processing1overviewIntheproductionofpolycrystallinesilicon,whetheritisthesynthesisprocess,orstillTheformerpreheating,theexhausttreatmentandsoonallusedoubletubeplateheatexchanger,isBecauseoftheparticularityoftheprocessmedium(Tcs,DCS,STC)Reactiveproductionofsilicicacid(silicicacid)HC1,
4、causingcorrosionandblockageThehighrequirementofartpurityalsoavoidscausingseriousaccidents,andtwokindsofinterfacesarestrictlyprohibitedQualitativemixed.ButthedesignofthedoubletubeplateheatexchangerisnotyetTherelevantstandards,andalotofareasthatneedtobeimprovedandexplored,arespecialItisthedesi
5、gnandstrengthcalculationofthethicknessofthetubeplate,andthetubebeaminthemanufacturingThestructuredesign,processing,etc・，suchasexpansion,pipeandshell,etcTheproblemisnotsolved・LeakageanddielectricpluggingarecommoninpracticeThispapermakesasuperficialanalysisoftheproblem・2doubletubeplateheatexch
6、anger,・・2.1doubletubeplateheatexchangerstructureTherearetwokindsofstructureofdoubletubeplateheatexchanger・AforFixedtubeplateheatexchanger,aheatexchangerhasfourpipeboards・Theotherisau-tubeheatexchanger,andthewholeheatexchangerhastwotubesComposition.Fixedtubeplateheatexchanger:heattransfereffe
7、ctofthisheatexchangerWell,itallowsboththeshellandthetubetoflowinthedirectionoftheflowIthasahighheattransfereffect・Itisintheformofau-tubeheatexchangerThedownsideofthisisthatthereisaleakpoint,twomoretubes・ItdoWhencoolerorheater,itisbesttoputwaterorwa
