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Specialized In The Design, Overhaul, Transformation, Production And Installation Of Air Preheater And Gas-Gas Heater (GGH).
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Air preheater /GGH

Air preheater /GGH

QiXing Electric Power provides the electric power market with the whole set of qualified air preheater and GGH. We have experience of many years of and advanced technology on pressure type shearing of heat exchanger components, enamel coating process and enamel firing process, which have always been appraised by our customers.

Usage maintenance

Usage maintenance

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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0318-2668802

E-mail:zhongnengjiye@163.com  Add:North Industrial Park, Hengshui City, Hebei Province

Hengshui Qixing Electric Technology Co., Ltd   冀ICP备08004088号-1    Powerded by 300.cn 

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