Dab tsi yog Txoj Kev Pulping ntawm Ntawv Tshuab?

Lub hom phiaj ntawm pulp bleaching nyob rau hauv papermaking tshuab yog cov cuab yeej siv nyob rau hauv tus txheej txheem ntawm cais cov nroj tsuag raw cov ntaub ntawv rau hauv fibers. Pulping txoj kev tuaj yeem muab faib ua chemical method, mechanical method and chemical mechanical method, thiab cov khoom siv pulping sib xws muaj xws li digester, wood grinder, kub zeb, pulp washer, bleaching machine, pulp beater thiab khib nyiab rov qab khoom.

Tom qab cov ntoo hlais yog preheated los ntawm chav, lub slurry uas yog tom qab ntawd hauv av nyob rau hauv lub siab yog hu ua kub ntoo chips sib tsoo ntoo pulp, thiab lub tshuab uas ua rau kub ntoo chips sib tsoo ntoo pulp yog ib tug kub zeb, thiab lub kub zeb siv ntau heev. ntawm hluav taws xob, yog li kev siv tag nrho cov hluav taws xob hluav taws xob hauv cov txheej txheem refining yog qhov teeb meem tseem ceeb ntawm cov kub zeb; Lub tshuab nqus tsev ntxhua khaub ncaws yog cov cuab yeej siv tshuab uas cais cov kua txiv hmab txiv ntoo los ntawm cov cawv dub, thiab muaj ob pawg ntawm kev siab siab thiab qis concentration extraction raws li cov cawv dub extraction.

Lub hom phiaj ntawm cov kua txiv hmab txiv ntoo yog tshem tawm cov lignin thiab cov xim uas tseem tshuav nyob rau hauv cov ntaub so ntswg tom qab ua noj, txhim kho cov tawv nqaij dawb, thiab ua kom cov tawv nqaij muaj xim dawb. Lub tshuab bleaching yog ib yam khoom siv tshuaj dawb uas feem ntau siv, uas yog tsim los ntawm cov khoom xws li cov ntsia hlau thruster thiab lub nruas ntxhua ntawm lub tank bleaching. Cov slurry thiab tshuaj dawb yog muab tso rau hauv lub pas dej ua ke thiab cov dej ntxuav yog tsis tu ncua ntxiv, uas circulates nyob rau hauv lub pas dej ua ke nrog kev pab los ntawm ib tug ntsia hlau propeller kom tiav cov txheej txheem ntawm kev sib tov thiab tshuaj tiv thaiv. Dej nrog cov khoom siv tshuaj dawb thiab cov tshuaj bleach residual raug tso tawm los ntawm cov kab noj hniav sab hauv ntawm lub nruas ntxhua kom tau txais cov xim dawb.