JudgingfromthesourcesofairpollutioninChina,accordingtorelevantresearchbytheMinistryofEnvironmentalProtection,themainsourcesofairpollutioninChinacanbedividedintoproductivepollution,domesticpollutionandtransportationpollution,amongwhichproductionpollutionislarge.Inthecaseofproductivepollution,atmosphericpollutionisalsoseriousinthermalpowerplants,steelplants,petrochemicalplants,andcementplants.  Therefore,withtheincreasingemphasisonenvironmentalprotectionbythestateandtheincreasingeffortstocontrolairpollution,webelievethatthedemandfordustremovalequipmentinkeyairpollutionindustrieswillcontinuetoincrease,andbagdustremovalequipmentwillfullybenefitfrommarketdemand.growthof!Fromtheapplicationoftheelectrostaticprecipitator,accordingtothe“2013-2017ChinaDustRemovalEquipmentManufacturingIndustryProductionandSalesDemandandInvestmentForecastAnalysisReport”releasedbytheProspectiveIndustryResearchInstitute,intheUnitedStates,thecurrentbagboilerdustcontrolfieldinthefieldofboilerdustremovalWithashareofmorethan40%,morethan90%ofthelargedry-processcementkilnusesbagfilters;inEurope,bag-typedustcollectorsaccountfornearly50%ofpowerplantboilers;inAustralia,morethan80%ofthermalpowerplantscurrentlyBothusebagdustremoval.InChina,themarketshareofbagfiltersinsteelandnon-ferrousindustrieshasreachedmorethan90%,andthemarketshareinthecementindustryhasreachedmorethan80%.  Theslurryflowsathighspeedinthepump,andtheerosionoftheinnersurfaceofthepumpcasingisalsoverylarge.Thewallthicknessofthepumpcasingisoftenthinnedandworn.Whenthepumpcasingisthinned,theslurryreturnflowaftertheworkoftheimpellerincreasescorrespondingly,thetotalamountofslurrycirculationdecreases,thepressureheadnaturallyfailstoreachtheheightitshouldhave,theabsorptioneffectbecomesworse,theoutputcannotreachtheratedvalue,andthedesulfurizationiscaused.Theefficiencycontinuestodecrease,affectingtheefficiencyofthedesulfurizationsystem. Solution:Whentheslurrycirculationimpellerandthepumpcasingareseriouslyworn,thecurrentoftheslurrycirculationpumpisreduced,theoutputisreduced,andthecirculationisreduced.Atthistime,theoperationshouldbestopped,andthepumpimpellerandthepumpcasingarespeciallyprotected.Grinding,whentheanti-wearworkisprocessedandcured,itcanbeputintooperationhere.Whentheimpellerwearsseriously,thenewimpellercanbereplacedaccordingtotheoperationcycle(Fig.3LaichengPowerPlant#3desulfurizationsystemLaichengPowerPlant#3desulfurizationsystemslurrypumpwornimpeller)tomaintainthenormalslurrycirculation.Thedustcontentinthefluegascontinuestoexceedthedesignallowableamount,whichwillgreatlyreducethedesulfurizationrateandgraduallyprecipitatethepluginsidethepipeline.Inaddition,thesootandflyasharealkaline,andwhenitenterstheslurry,thepHoftheslurrywillrise.SincethepHcontrolduringoperationisnolongercalculatedbyCa/S,butonlybypHfeedbackcontrol,theamountoflimestoneslurryisreducedaccordingly,butthedustisnotconsumed,sothefalsepHvalueisincreasedandthedesulfurizationefficiencyisdecreased..