Airpreheaterheattransfercomponents,installation,use,maintenanceinstructions Hoistingcomponents:Qixingpowersupplyheatexchangercomponentsaregenerallytwokindsofmaterials,oneforthelow-carbonsteelheatexchangercomponents,componentthicknessbetween0.5~0.6mm,usedinthehotend;theotherfortheenamelheatexchangercomponentscoatedAfterthethicknessof1.15~1.2mm,usedinthecoldside.Becausetheheattransfercomponentsarerolledbythesheet,inthetransport,liftingtheendofthecomponentmustbeavoideddamage,otherwise,willcausethedeformationofcomponents,enamelsheddingandotherissues,thegeneralFoundationwillprovideadedicatedspreader,Tolifttheheattransferelementcartridge.Prohibitedtheuseofordinarycarbonsteelspreadermade!.Duetofatigueresistanceofcarbonsteelispoor,pronetodecoupling,fracture,etc.,willcauseagreatsecurityaccident! HeattransfercomponentsTransportationStorage:Heattransfercomponentsintheloadingandtransportationprocessmustbeputneatlycode,andtietheprotectiverope,coveredwithraincloth,beforeunloadingthecar,therainandraintoshaketothecar,forbiddenshakingscatteredonthecomponents.Thesiteoftheheatexchangecomponentsmustbefreeofwater,debris,andotherplacesthanthecementplains,andwitharainclothtoprotect,prohibitloadingandunloadingintherainydayheatexchangercomponents,otherwiseitwillcausecorrosion. Heatexchangerinstallationprotection:Intheinstallation,avoidtouchingthesteelcolumn,electrichoisthook,guidechainandothermetalobjectsinthehoistinggrid,acertainsupporttocheckthesolidsteel,andcleanupweldingslag,scrapandotherdebris,Whenthecomponentstransferredtothegrid,onebyoneplacedasbestosblanket,theendofthecomponentstobeprotectedtopreventthenextinstallationprocessdamagetothecomponents! ComponentfoulingCorrosioncontrol:Theactualcombustionoftheboileralmostallthefuelcontainssulfur,theboilercombustionprocesswillbe2to6%ofthesulfurdioxideintosulfurtrioxide,andfluegasinthewaterreaction,denitrificationammoniaescapereactionofammoniasulfateformation,Inthecold-sideheattransferelementsurfacewillformastickywetcorrosive,inadditiontothefluegasinthefluegasandcatalystintheprocessofblowingtheparticles,fragmentsandotherdamage,andthuscontinuetocorrosionheatexchangercomponents,pluggingHeattransferchannel,resultinginpoorheattransferheatexchangercomponents,shortlife,largepressureandotherissues.SO2/SO3conversionisnotmorethan1%(molarratio);toavoidtheairpreheaterinthecontroloftherateoftheescapeofammoniainthegeneralcontrolof2.3mg/m3;The"coldjunctiontemperature"(fluegasoutlettemperature+airinlettemperature)isbelowtherecommendedminimumvalueforlongperiodsofoperation.Avoidingwaterleakagefromtheeconomizerorheaterfailureincreasesthedewpointofthefluegas,Roadleakageshouldbepromptlyrepaired. Firepreventionmeasures:Intheignition,low-loadoperation,poorcombustionconditions,theincompletecombustionofcoal,andignitionoilparcelswillappearsecondarycombustion,andthusmustpreventthesurfaceofthefuelelementoftheheattransferelementdeposition,otherwiseitwillcauseairpre-Firesituation.Theairpreheaterrotormustbekeptrotating;keepblowingsootregularlytoensurethattheheatexchangersurfaceclean;paycloseattentiontotheairpreheaterandairtemperature,whenthetemperatureanomaliesoccur,Shouldbepromptlyinvestigatedandeliminated;intheeventofsecondaryignition,mustkeeptheblower,induceddraftfan,sootblower,lowpressurewaterinanormalstate;firemonitoringsystemshouldbemaintainedinnormalworkingcondition. Checkbeforeandafterrunning:1,checkandthoroughlycleantheupperpartoftheairpre-heater,theflueinsidethetemporarypedal,scrap,support,etc.;2,checkthesootblowerbarrelbracketweldingissolid,reliable,ifnecessary,tostrengthenmeasurestopreventsootstentoffstuckrotor;3,usingthehandleplaterotor2lapstoseewhetherthefreerotation;4,checkthehigh-pressurewater,steampipes,valvesarenormal,soakedsteampipedrainageisnormal,sootvalvebeforethepressureandsuperheatisnormal;5,checktheradial,circumferential,axialsealinggap,sealingplateboltsarenormal;6,checktherotortopandbottombearings,gearboxoillubricationoilleveltomeettherequirements;7,checktheairpreheaterimportandexportbafflehasbeenclosed;8,checkthefiremonitoringdevice,checkthelocalcabinettoensureitsnormalwork;9,checktoensurethattherotorstallalarmdeviceisworkingproperly;10,checktheairpreheaterreducer,upperandlowerbearingrunningsoundisnormal;11,checkthedrivemotorcurrentisnormal;12,checktheairpreheaterair,smokeimportandexportoftemperatureisnormal. Heatexchangeelementsoot-blowing:1,theairpreheaternormaloperationafterblowingonceevery8hours,andinstrictaccordancewiththesootblowerinstructionsthatensurethattheairpreheaterresistancetomaintaintheoperatingvaluewithinthedesignvalue,beforetheshutdown,intheboilerstartupprocessandSootblowingmustbeintensifiedduringthelowloadstage.2,inordertoavoidcondensationonthesurfaceoftheheatexchangeelement,thesteamshouldbesoothedwhenthetemperatureoftheheatexchangeelementishigh,sothesootblowingshouldbeselectedundertheconditionthattheunitreachesacertainload.3,inordertoensurethatthesootblowingeffect,topreventalltheexternalwaterintotheairpreheater,payattentiontotheselectionofacertainpressureandtemperatu