The-process-of-papermakingPPT課件

.,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：漿，漿料pulppreparing，stockpreparation：備漿chest：漿池;(stock)tank：(漿)池，槽reject，rejects，rejectedstock，rejections，ejects：篩渣，漿渣tailings：尾漿，漿渣c(diǎn)logging：堵漿beater：打漿機(jī)refiner:精漿機(jī)、打漿機(jī)beatingdegree：打漿度oSR(Schopper-Riegler)：肖氏打漿度；CSF：加拿大標(biāo)準(zhǔn)游離度acceptedstock：合格漿料，良漿accept：良漿additive：添加劑approachflow（ofstock）：（漿料）上網(wǎng)approachflowsystem（紙機(jī)上的）流漿系統(tǒng)pulper，aquapulper，hydrapulper：水力碎漿機(jī)brooming：帚化,.,5,furnish：配料form，forming：（紙頁）成形filler：填料fillerretention：填料留著率firstpassedretention：首程留著率decker，thickener：濃縮機(jī)knot：漿節(jié)wet-endchemistry：濕部化學(xué),.,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：抄紙，造紙paper：紙sheet：紙頁paperweb：紙幅weakwhiteliquor：稀白液strong（thickened）whitewater：濃白水couchroll：伏輥breastbox,headbox：網(wǎng)前箱,流漿箱breastroll：胸輥broke：損紙（trim）squirt：水針drycylinder：烘缸threading：領(lǐng)紙，引紙guideroll：校正輥，導(dǎo)輥deckle：定邊裝置，定幅裝置,.,15,evener（roll），holeyroll，holyroll：整流輥，勻漿輥dryline：水線dryend，dryingnest，dryersection，dryerpart：干燥部foil：案板fourdrinier：長網(wǎng)造紙機(jī)groovedroll：溝紋輥headtank：高位槽longdirection，machinedirection：縱向（的）machinedirection：紙機(jī)縱向machinepit，wirepit：（紙機(jī)）白水坑right（left）handmachine：右（左）手機(jī)saveall：白水回收器，白水回收裝置shower：噴水，噴水管（器），lubricationshower：潤滑噴水管，cleaningshower：清洗噴淋管size，sizing：膠料，涂膠，施膠sizeresistance，sizingdegree：施膠度stretcher：張緊輥suctionbox：（真空）吸水箱,.,16,felt：毛毯feltstretcher：毛毯張緊器，毛毯張緊輥mesh：網(wǎng)目formingtable：網(wǎng)案niproll：光澤輥perforationplate，perforatedplate：勻漿板，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：抗張強(qiáng)度ashcontent：灰分wetstrength：濕強(qiáng)度airpermeability：透氣度，透氣性burst，burstingstrength，popstrength：耐破度burstfactor：耐破因子foldingendurance，foldingstrength：耐折度bendingstiffnes