ABSTRACT
Heatingsurfacecontaminationofcoal—firedboileraffectstheefficiencyandsafeoperationoftheboiler,usuallysootblowerisusedtosolvethelong-standingproblemintheoperationofthepowerproduction.Butthetimingandno-partitionsoot—blowingmodecannotelLsuretheheatingsurfacerunninginacleanstateundertheconditionofminimumenergyconsumption.Therefore,weresearchonscientificsoot-blowingwaystoreducethefoulingofheatingsurfacehasimportantpracticalsignificance.
Inviewofthephenomenonthatfoulingandslagginginheatingsurfaceoftheboileris
serious,thearticletakestheboilerof660MWinJingdezhenpowerplantunitastheresearch
object,andcarriesouttheresearchworkincharacteristicsoffoulingcharacteristics,foulingmonitoringandSoot-blowingstrategyonboilerheatingsurface。Firstofall,thearticleanalysestheformationmechanismofcoalashandingredientcharacteristics.Andthearticle
andslaggingcharacteristics,operationanalysesthecoalywhicheffectheatingsurfacefouling
levelandthearrangementstructureofheatingsurfacesandotherfactors.Secondly,accordingtothecontaminationmechanismanddifferentheattransferways,monitoringtheregionwhichisdividedintoradiationheatingsurfaceandconvectionheatingsurface.Andradiationheatingsurfacecokingmonitoringmodelandconvectionheatingsurfacefoulingmonitoringmodelareestablished,theformertakesthefurnaceoutletgastemperatureasthefoulingcharacteristicparameters,andthelattertakescleanlinessfactorasthefordingcharacteristicparameters.Andusingdatareal-timecollectedfromDASsystemofpowerplant,combined
withthevariationoffoulingfora
longtimetoverify.Finally,combined、析廿ltheengineering
streamsoot-blowingtechnologyandexamples,wecarryacontrastanalysisonmain
soot??blowingwaysforcoal?firedboiler.Wehavearesearchontheselectionmethodofsoot-blowingschemeandblowingcycledeterminants,putforwardstatesoot—blowingoptimizationschemewhichisbasedonpositivecoefficientofenergy.
Theresearchshowsthat,inthevariationconditionofcoalandboilerload,theselection