Pulping teeb meem ua ntej ua ntawv, tawm hauv kev cuam tshuam zoo rau kev ua haujlwm ntawm daim ntawv tshuab thiab cov ntawv zoo. Qhov tseem ceeb hauv kev ntaus yog pulp concentration, beating degree, thiab pulp ratio.
Pulp Concentration Measurement
Cov ntaub ntawv tsis ruaj khov tuaj yeem ua rau cov ntawv tsis sib xws, thiab nws tuaj yeem ua rau daim ntawv tawg thiab cuam tshuam cov ntawv ib txwm ua rau cov ntawv tsis zoo. Cov yam ntxwv ntawm cov tawv nqaij tsis ruaj khov tsis ruaj tsis khov nyob ntawm kev hloov pauv ntawm cov tawv nqaij nyoos thiab cov khoom pov tseg, phau ntawv qhia concentration tuning hauv kev ntaus, tsom thiab sib xyaw, nrog rau cov dej dawb tsis sib npaug.
Kev hloov hauv Raw Pulp Concentration
Lub pulp xa los ntawm lub rhiav pulping sib txawv nyob rau hauv concentration. Qhov kawg pulp concentration yuav raug cuam tshuam nyob rau hauv cov ntaub ntawv tsim nyog kho tsis tau ua nyob rau hauv concentrating.
Concentration Adjustment nyob rau hauv Beating
Thaum lub sij hawm ntaus, pulp undergoes cov txheej txheem xws li kev xav, ntaus, thiab sib tov, yuav tsum tau hloov cov concentration. Qee qhov system sivpulp ua dkev xavua ymeter, tab sis kev hloov kho phau ntawv muaj ntau dua. Kev hloov pauv siab tuaj yeem tshwm sim vim tsis muaj kev paub ntawm tus neeg teb xov tooj, tsis muaj kev mob siab, lossis khoom siv tsis raug.
Variations nyob rau hauvWaste StuffNco ntsoov
Recycled tawg daim ntawv yog tws nyob rau hauv ib tug hydropulper thiab ces concentrated mus rau ib tug ruaj khov theem ua ntej dilution mus rau qhov yuav tsum tau cov txheej txheem concentration. Yog hais tias cov khoom pov tseg concentration sib txawv heev thaum lub sij hawm lub cev qhuav dej thiab dilution, nws muaj peev xwm destabilize tag nrho cov pulp system.
Instability nyob rau hauv Dawb Dej Systems
Cov dej dawb yog rov siv dua rau cov kua txiv hmab txiv ntoo kom txo tau cov dej siv thiab tsis muaj fiber ntau. Yog tias cov dej dawb tsis sib npaug los yog nws lub siab thiab ntws tsis ruaj khov, nws yuav cuam tshuam rau cov tawv nqaij dilution thiab concentration.
Beating Degree
Ntau yam cuam tshuam rau kev sib tsoo, xws li siab, concentration, ntws tus nqi, lub sij hawm, kub, hniav mob, thiab tus neeg teb xov tooj txawj. Yog hais tias ib kauj ruam yog mishandled, lub pulp beating zoo yuav raug cuam tshuam. Stabilizing beating yog qhov nyuaj yam tsis muaj kev soj ntsuam tas li, tab sis nws yog qhov tseem ceeb rau kev ruaj khov papermaking.
1. Qhov cuam tshuam ntawm kev ntaus nqi qis
Thaum qhov kev sib tsoo tsawg dhau lawm, cov phab ntsa hauv lub hauv paus thiab theem nrab ntawm cov fibers tsis txaus tawg. Fiber o, txiav, fibrillation, thiab nplua tsim tsis ua raws li cov txheej txheem.
Qhov no ua rau cov kua dej nrawm heev thaum lub sij hawm tsim, tsis zoo fiber ntau sib txuas, thiab cov qauv ntawv tsis sib xws, cuam tshuam qhov sib xws, lub zog, thiab smoothness.
2. Cov txiaj ntsig ntawm Kev Ua Phem Siab Siab
Kev sib tw ntau ntxiv txhim kho kev sib raug zoo tab sis txo qhov nruab nrab fiber ntau ntev thiab ntub lub vev xaib.
Over-beating accelerates fiber ntau txiav, o, thiab fibrillation, ua rau cov kua dej ntawm cov xaim nyuaj dua, txuas cov kab dej, thiab ua kom cov dej noo ntau ntxiv hauv lub vev xaib ntub dej.
Cov dej noo ntau dhau tuaj yeem ua rau embossing lossis ntau qhov tawg vim qhov tsis txaus siab.
Kev sib tw siab kuj tseem ua rau kom qhuav shrinkage, ua rau kev hloov pauv hauv kev sib piv ceev thoob plaws hauv tshuab, cuam tshuam rau daim ntawv qhov ntev, thiab txo lub zog thiab ruaj khov.
Pulp Ratio
Lub pulp piv yog nyob ntawm cov yam ntxwv xws li cov yam ntxwv ntawm cov khoom siv raw, txoj kev pulping, kev ua haujlwm ntawm lub tshuab, thiab hom ntawv thiab cov kev xav tau zoo. Tom qab txiav txim siab qhov piv txwv, kev ua raws li cov txheej txheem nruj heev yog qhov tseem ceeb kom tsis txhob muaj kev cuam tshuam ntau lawm thiab cov nqi nce ntxiv.
Ntev vs Short Fiber Ratio
Ib qho piv txwv tsim nyog txhim kho fiber ntau sib txuas, daim ntawv sib xws, thiab lub zog thaum txo cov nqi thiab txhim kho kev ua haujlwm.
Cov fiber ntau ntev me ntsis txo cov kev sib raug zoo thiab cov ntawv ntub dej, ua rau tawg, thaum cov fiber ntau ntev yog kev lag luam tsis muaj peev xwm.
Kev txiav txim siab tshwj xeeb
Chemical nyom pulp, nrog luv fibers, tuab cell phab ntsa, thiab siab hemicellulose cov ntsiab lus, complicates papermaking thiab cuam tshuam zoo. Txhawm rau txo cov teeb meem no, cov khoom siv fiber ntau zoo dua qub, xws li paj rwb, ntoo, lossis flax pulp, tuaj yeem sib xyaw, txawm tias lawv cov nqi siab dua. Kev sib xyaw kom zoo ntawm cov fibers ntev thiab luv luv yog qhov tseem ceeb rau kev ua kom cov ntaub ntawv du, ua tau raws li cov qauv zoo, thiab ua tiav cov nqi ua haujlwm.
Post lub sij hawm: Jan-24-2025
