The-process-of-papermakingPPT课件

.,1,PapermakingTheprocessofgoingfromPulptoPaper,*Themainpartsofthispptwereobtainedfrominternet.,.,2,ObjectivesOfPapermaking,GoodFormationPhysicalandOpticalPropertiesHighCapacity(tonspaper/day),.,3,PapermakingWettoDry,StockPreparation(Wet-end)Refining,Screens,Cleaners,ChemicalAdditivesPapermachineHeadbox,FormingSection,PressSection,Dryers,SizePress,PaperReelDryEndCoating,Calendaring,Rewinding,Packaging,.,4,StockPreparationpulp，stock，stuff：浆，浆料pulppreparing，stockpreparation：备浆chest：浆池;(stock)tank：(浆)池，槽reject，rejects，rejectedstock，rejections，ejects：筛渣，浆渣tailings：尾浆，浆渣clogging：堵浆beater：打浆机refiner:精浆机、打浆机beatingdegree：打浆度oSR(Schopper-Riegler)：肖氏打浆度；CSF：加拿大标准游离度acceptedstock：合格浆料，良浆accept：良浆additive：添加剂approachflow（ofstock）：（浆料）上网approachflowsystem（纸机上的）流浆系统pulper，aquapulper，hydrapulper：水力碎浆机brooming：帚化,.,5,furnish：配料form，forming：（纸页）成形filler：填料fillerretention：填料留着率firstpassedretention：首程留着率decker，thickener：浓缩机knot：浆节wet-endchemistry：湿部化学,.,6,.,7,Refining,PurposeofRefiningCollapsefiberstoimprovebondingFibrillates(shredsfibers)toimprovebonding,.,8,RefiningIncreasedBonding,.,9,PressureScreens,RemovelargecontaminantsPlasticsMetalsRocks,.,10,CentrifugalCleaners,UsecentrifugalforcetoremovecontaminantsRemovesparticlesthatarelighterorheavierthanpulpPlasticsDirt,.,11,ChemicalPaperAdditives,AcidsandBasesControlpHSizingAgentsRosin,waxes,AKD（Alkylketenedimer）UsedforpapergradesrequiringwaterrepellencyorcontrolledrateofwaterabsorptionDryStrengthAdditivesStarchandotherpolymersUsedtoimprovestrengthandstiffnessofpaperWetStrengthAdditivesPolymersthatcrosslinktofibersurfacesUsedforpapergradessuchastoweling,.,12,ChemicalPaperAdditives,FillersClay,talc,TiO2(titaniumdioxide)ImprovesopticalandsurfacepropertiesforprintinggradepapersRetentionAidsPolymersthatimproveretentionoffiberfinesandfillers(CPAM，cationicpolyacrylamide)DefoamersImprovewaterdrainageandsheetformationSlimicidesControlsslimegrowthandothermicroorganismsinpapermachinewhitewater,.,13,Papermachine,HeadboxandFormingSectionPressSectionDryerSection,.,14,Papermachinepapermaking：抄纸，造纸paper：纸sheet：纸页paperweb：纸幅weakwhiteliquor：稀白液strong（thickened）whitewater：浓白水couchroll：伏辊breastbox,headbox：网前箱,流浆箱breastroll：胸辊broke：损纸（trim）squirt：水针drycylinder：烘缸threading：领纸，引纸guideroll：校正辊，导辊deckle：定边装置，定幅装置,.,15,evener（roll），holeyroll，holyroll：整流辊，匀浆辊dryline：水线dryend，dryingnest，dryersection，dryerpart：干燥部foil：案板fourdrinier：长网造纸机groovedroll：沟纹辊headtank：高位槽longdirection，machinedirection：纵向（的）machinedirection：纸机纵向machinepit，wirepit：（纸机）白水坑right（left）handmachine：右（左）手机saveall：白水回收器，白水回收装置shower：喷水，喷水管（器），lubricationshower：润滑喷水管，cleaningshower：清洗喷淋管size，sizing：胶料，涂胶，施胶sizeresistance，sizingdegree：施胶度stretcher：张紧辊suctionbox：（真空）吸水箱,.,16,felt：毛毯feltstretcher：毛毯张紧器，毛毯张紧辊mesh：网目formingtable：网案niproll：光泽辊perforationplate，perforatedplate：匀浆板，多孔板,.,17,PapermachineBasicsFourdrinierMachine,HeadboxDistributefibersontowireFormingSectionFormsheetandremovewaterPressSectionRemovemorewaterandimprovesmoothnessandbondingDryerSectionDrypaperusingsteamPaperReel-Rolluppaper,.,18,HeadboxandFormingSection,Gapformer(alsocalledtwinwireformer)canremovewaterfrombothsidesofthesheet.,Headbox,.,19,HeadboxandFormingSection,Usedtomakelinerboardlikewhatisontheoutsideoffruitboxes.Primaryheadboxwouldbebrownpulpandsecondarybleachedpulp.,Secondaryheadbox,.,20,MechanicalWaterRemovalHydrofoil,Asthewirepassesoverthefoilthepressureunderneaththewireislessthanontopandwaterisforcedthroughthewetweb.,water,.,21,PressSection,RemovemorewaterfromsheetbeforedryingItcansmoothsurfaceofsheetandreducebulk(makeathinnersheet).,.,22,PapermachineWaterLoop(Basis:1tonbonedrypulp),FormingSection,Fiber,Water,1ton,199ton47,400gal,1ton,4ton950gal,PressSection,0.5%fiber,20%fiber,1ton,1.5ton360gal,DryerSection,1ton,0.09ton21gal,40%fiber,92%fiber,195ton46,450gal,2.5ton590gal,Recycle,1.49ton339gal,.,23,PapermachineEnergyConsumption(Basis:1tonairdrypulp),StockPrep,Electricity100kWh,Steam0.7GJ,140kWh,0.3GJ,Forming&Pressing,3.4GJ,DryerSection,90kWh,Dryingaccountsforapproximately66%oftotalenergyconsumption.,.,24,DryerSection,Waterremovedbyevaporationusingsteamheatedcylinders.,.,25,SizePress,PutssurfacecoatingofasizingagentonasheetUsuallystarchDecreaseswaterandairpermeabilityandincreasespaperstrength.,.,26,Meansto“presswitharoll”Smoothessurfaceofpapersheet,Calendaring,.,27,PaperReelTheEndoftheLine,.,28,Rewinder,Cutandrollpapertocustomerneeds.,.,29,PigmentCoating,FinefillerparticlesmixedwithbindersputonsurfaceofpaperImprovessheetsurfaceforprinting,PaperSheet,Coating,KnifeorAir,Todryer,.,30,Paperpropertiestearing（breaking）strength：撕裂度tensileproperties，tensilebreakingstrength：抗张强度ashcontent：灰分wetstrength：湿强度airpermeability：透气度，透气性burst，burstingstrength，popstrength：耐破度burstfactor：耐破因子foldingendurance，foldingstrength：耐折度bendingstiffnes