面巾紙的生產(chǎn)工藝(中英文)

1、面巾紙的生產(chǎn)工藝3.1原料進(jìn)口漂白針葉木漿，白度89%，纖維平均長(zhǎng)度1.80mm，打漿度16.5SR，濕重18g。3.2工藝流程漂白漿→碎漿機(jī)→雙圓盤磨漿機(jī)→原漿倉(cāng)→配漿倉(cāng)→調(diào)漿箱→混合池→高位箱→錐形除渣器→穩(wěn)漿箱→網(wǎng)槽→干燥→卷取3.3打漿工藝打漿濃度4.0%4.5%，電流120160A，打漿度4548SR，濕重69g。3.4抄紙工藝紙機(jī)抄寬1575mm，車速80100mmin。助劑的加人：濕強(qiáng)劑WA0.05%0.1%（對(duì)絕干漿）調(diào)

2、漿箱內(nèi)加人，分散劑PEO0.05%0.10％高位箱內(nèi)加入，黏度2.06mPa?s，扭矩51.5%(0#轉(zhuǎn)子，150rpm，溫度255℃）。3.5分散劑的溶解按0.03％的溶解濃度計(jì)算，稱取4kg分散劑平均放入2個(gè)料斗內(nèi)。首先在溶解槽內(nèi)加水至第一組葉翅，開(kāi)動(dòng)攪拌器，攪拌速度為40rmin，開(kāi)始加分散劑。料斗內(nèi)的分散劑經(jīng)氣流吹散，均勻地落在水膜上，進(jìn)人到溶解槽內(nèi)，整個(gè)加料過(guò)程不得少于40min，補(bǔ)加水到規(guī)定液位，再繼續(xù)攪拌40min（氣溫低

3、時(shí)在生產(chǎn)允許條件下，應(yīng)盡可能延長(zhǎng)攪拌時(shí)間或提高溶解水溫度在50℃左右），制備完畢。經(jīng)60目篩網(wǎng)導(dǎo)入分散劑貯存槽內(nèi)備用。溶解時(shí)，將分散劑均勻地分散在水中的操作極其重要，應(yīng)盡量使分散劑顆粒在進(jìn)人溶解槽之前被水包覆，否則容易導(dǎo)致分散劑結(jié)塊，溶液中產(chǎn)生果凍狀難溶物。在攪拌和加人的過(guò)程中應(yīng)盡可能地避免受過(guò)分的剪切。攪拌后，時(shí)間充足情況下，可適當(dāng)延長(zhǎng)靜止存放時(shí)間，使溶液有足夠的時(shí)間熟化，使分散劑的溶解更加充分。溶解后的PEO要及時(shí)使用，存放時(shí)間不宜

4、超過(guò)48h，溶解濃度越低，存放時(shí)PEO降解越快，一般12h用完效果最佳。分散劑溶液在制備和輸送過(guò)程中很容易吸附水中的微小雜質(zhì)形成“黏狀臟料”附著在制備槽、輸送管道的內(nèi)壁，如果這些臟料進(jìn)入上漿系統(tǒng)，會(huì)影響成紙質(zhì)量和紙機(jī)的正常抄造。因此很有必要進(jìn)行過(guò)濾、清洗、殺菌工作。PEO是一種有機(jī)高分子量聚合物，從某種意義上說(shuō)，它也是細(xì)菌、微生物的營(yíng)養(yǎng)物質(zhì)，尤其是在高溫季節(jié)，有必要在系統(tǒng)中加入一定量的殺菌劑。Productionprocessoftis

5、suepaper3.1rawmaterialsimptedconiferouswoodpulpbleachingwhitedegreeis89%theaveragefiberlength180mmbeatingdegree16.5SRwetweightof18G.3.2Theprocessofbleachingpulppulpmachinedoublediscrefinerpureebinslurrybinmixingtankmixin

6、gtankhightankthecentricleanerstableslurrytankthegroovedryingcoiling.3.3refiningprocessofbeatingconcentration4.0%4.5%current120160Abeatingdegreeof4548SRwetweightof69g.3.4papermakingtechnologyofpapermachinecopywidth1575mms

7、peed80100mmin.Additivesadded:wetstrengthagentWA0.05%0.1%(absolutedrypulp)intothemixingtankdispersingagentPEO0.5%0.10%highviscosityisadded2.06mPa?stqueof51.5%(0#rot150rpmtemperature25.5℃).3.5dispersingagentdissolvedindiss

8、olvedconcentrations0.03%computationweigh4kgdispersingagentevenlyinto2hopper.Firstinthedissolvingtankwithwatertothefirstgroupofleafwingstartthemixerstirringspeedis40rminstartaddingdispersant.Thehopperdispersantbyairblownu

9、nifmlyfallsinthewaterfilmintodissolvedgroovethewholefeedingprocessshallnotbelessthan40minaddwatertothespecifiedlevelcontinuestirring40min(whenthetemperatureislowintheproductionpermitconditionsasfaraspossibletoprolongmixi

10、ngtimehighdissolvedwatertemperatureatabout50℃)preparation.Through60meshsieveintothedispersingagentstagetankreserve.Whendissolveddispersingagentdispersedevenlyisextremelyimptantinthewateroftheoperationyoushouldtrytomaketh

11、edispersantparticlesbefeenteringthebathwatercoatingotherwiseeasilyleadtodispersercakingproducejellylikeinsolublesubstanceinsolution.Intheprocessofmixingpeopleshouldbeasmuchaspossibletoavoidexcessiveshear.Aftermixingtimee

12、noughitmaybeappropriatetoextendthestaticstagetimethesolutionhasmetimetoripendissolvingdispersingagentmefully.AfterthedissolutionofPEOuseintimestagetimeshouldnotexceed48hthedissolvedconcentrationislowerwhenstingPEOdegrada

13、tionmequicklythegeneral12hrunoutthebest.Dispersantsolutiontofma“stickydirtymaterial“attachedtothepreparationofinnergroovepipelineinthetinyimpuritiespreparationiseasilyadsbedwaterintheprocessofconveyingifthesedirtymateria

14、lintothesizingsystemwillaffectthenmalproductionofpaperqualitythepapermachine.Itisnecessarytocarryoutthefilteringcleaningsterilizationwk.PEOisakindofganichighmolecularpolymerinasenseitisthenutrientsofbacteriamicroganismes