吉马公司LYOCELL

ZimmerAG,Lyocell,ZimmerAG,Lyocell,JuneJune200420041ZimmerAG’sLYOCELLTECHNOLOGYPresentationfor:TangshanChemicalFibreGroupTangshan,Hebei,PRChinaZimmerAG,Lyocell,ZimmerAG,Lyocell,JuneJune200420042AgendaTheZimmerLyocell(ALCERU)process1.BasiclayoutofacommercialLyocellplant2.LyocellFibre,theattractivefibreforthefuture3.LyocellFibre,“outside-in“-approach4.ZimmerAG,Lyocell,ZimmerAG,Lyocell,JuneJune2004200431.1.LyocellLyocellFibresFibresTheZimmerLyocell(ALCERU)ProcessZimmerAG,Lyocell,ZimmerAG,Lyocell,JuneJune200420044ALternativeCElluloseRUdolstadt=technologytoproduceLyocellfibresLyocell:man-madecellulosicfibresobtainedbyanorganicsolventspinningprocesswhereasa)“organicsolvent”meansessentiallyamixtureoforganicchemicalsandwaterb)“solventspinning”meansdissolvingandspinningwithouttheformationofaderivativeSymbolisedby:CLYLyocellisrecognisedasagenericnamebyBISFA(Brussels)andtheFederalTradeCommission,USA.LYOCELLLYO...Greek:lyeindissolving...CELLcelluloseZimmerLyocellTechnology„ALCERU“processZimmerAG,Lyocell,ZimmerAG,Lyocell,JuneJune200420045ProcessComparisonSource:ZimmerAG,TITK,ASGcellulosepretreatmentlyocellfibreLyocell-processALCERUTechnologiedirectdissolutionNMMOdil.NMMOconc.waterNMMOMakeupwashingspinningsolventrecovery(99.5%)aftertreatment&finishingcelluloseNaOHwaterpretreatmentviscosefibreClassicalVSFprocessCS2chemicalreactionNaOH/waterdissolvingH2SO4ZnSO4spinningEffluents:Zn-salts,Na2SO4Emissions:H2S,CS2aftertreatment&finishingViscoseTechnologieZimmerAG,Lyocell,ZimmerAG,Lyocell,JuneJune200420046Economic&EnvironmentalAspectsPulp1000kg/tfibreNaOH(100%)600kg/tfibreCS2180kg/tfibreZnSO420kg/tfibreH2SO4800kg/tfibreEffluentsEmissionsWastecontaining(amongothers):CS2H2SSO2SO3ZincClassicalVSFprocess•Productandwastehighlycontaminatedwith-extremelytoxicH2S&CS2-zinc&sulfurcompoundsPulp1000kg/tfibreNaOH(50%)100kg/tfibreHCl(30%)90kg/tfibreNMMO(50%)25kg/tfibreEffluentsEmissionsWastecontaining(amongothers):NMMONMMMNaClLyocellprocess•NMMOisanon-toxicsolvent•NMMOrecoveryrate99.5%•noemissionofpollutingorhealth-hazardouschemicals•contaminationalmostnon-detectableSource:ZimmerAG,LenzingerBerichte9/94ZimmerAG,Lyocell,ZimmerAG,Lyocell,JuneJune200420047•cellulosicfibresproductionpresentlycompliestotheconventionalviscoseprocess•theconventionalviscoseprocessisoldithasbeendevelopedacenturyago.•carbondisulphide(CS2),usedintheconventionalviscoseprocess,isasourceofenvironmentalproblems•pertonviscosefibrethereisgeneratedonetonsodium-sulphateasaby-product(sodiumsulphatehastobecleanedandconcentratedordisposed)•environmentalpollutingzincisusedintheviscosespinningbath,anenvironmentalfriendlyrecoveryisveryexpensive•inevitablemeasuresforenvironmentalprotectioncausehighinvestmentcosts,inmanycasesashutdownoftheplantischeaperthananinvestment•actuallytherearenoprojectsknownwhichdealwiththeerectionofnewviscosefibreplantsworld-wideTheviscoseprocess:TheconventionalwaytoproducecellulosicfibresZimmerAG,Lyocell,ZimmerAG,Lyocell,JuneJune200420048ZimmerLyocell(ALCERU)processNMMO-recoveryNMMOconc.NMMOdil.waterwashingcuttingfibretreatmentdryingbalingSTAPLEFIBREwashingtreatmentdryingpackingOTHERSFILAMENTdryingwindingonbobbinsfibrefinishingwashingspinningpulpcellulosesuspensioncellulosesolutionfiltrationwet-pulppretreatmentenzymatic-pulppretreatmentdry-pulppretreatmentZimmerAG,Lyocell,ZimmerAG,Lyocell,JuneJune200420049ZimmerLyocell(ALCERU)process:EnzymaticpretreatmentAdvantageofenzymaticpretreatment•improvedsolubilityofCelluloseinNMMO-shortersolubilitytime-lowerreactortemperatures•ReductionofunsolvedCellulose-particles•increasedprocessstability•exactviscosityrangecanbeadjusted•removingofdustparticlesandhemicelluloses•useoflow-valuedpulppossibleAdvantageofenzymaticpretreatment•improvedsolubilityofCelluloseinNMMO-shortersolubilitytime-lowerreactortemperatures•ReductionofunsolvedCellulose-particles•increasedprocessstability•exactviscosityrangecanbeadjusted•removingofdustparticlesandhemicelluloses•useoflow-valuedpulppossibleactivatedpulptoslurryproductionactivatedpulptoslurryproductionpulppulpdraining/pressingenzymatic-pulppretreatmentH2O-loopEnzymesZimmerAG,Lyocell,ZimmerAG,Lyocell,JuneJune20042004100100,20,40,60,810,20,40,60,81StapleFibre/FilamentWaterNMMOdryingsuspension0,200,40,60,8CelluloseSolutionrangespinningsolutionPhasediagramofLyocell-processprecipitating/washingZimmerAG,Lyocell,ZimmerAG,Lyocell,JuneJune2004200411Principleofdry-wetspinningprecipitationbathairgapfibrecabledopespinneretspinneretholesrollerrollerstepsoffibre/filamentproducing1.moldinginwarmstate2.coolingofmoldeddopeinairgap3.precipitatingofcelluloseinprecipitationbathstepsoffibre/filamentproducing1.moldinginwarmstate2.coolingofmoldeddopeinairgap3.precipitatingofcelluloseinprecipitationbathZimmerAG,Lyocell,ZimmerAG,Lyocell,JuneJune2004200412NCCCCCOOMethylmorpholineNMMO-+ONCH3H2O2ONOCH3N-MethylMorpholine-N-OxideThesolvent:NMMOSource:Acta.Cryst.ZimmerAG,Lyocell,ZimmerAG,Lyocell,JuneJune2004200413StepsofSynthesis:1Epoxidation(EthylenetoEthylen-oxide)2Hydrolysis3CyclisationtoN-MethylMorpholine3aCyclisati