Izwi rokuti "wet end chemistry" ishoko rinokosha mukugadzira mapepa.Inowanzo shandiswa kutsanangura zvakasiyana-siyana (senge fiber, mvura, nezvimwewo), mafirita,makemikari additives, etc.) mutemo wekudyidzana uye chiito.
Kune rumwe rutivi, makemikari emvura anogona kushandiswa kuwedzera mvura, kuderedza kupindira kwemhepo uye kubvisa furo, kuchengetedza michina yemapepa yakachena, uye kuchengetedza mvura chena yakaderera mumarara;nerumwe rutivi, kana zvinhu izvi zvikasadzoreka, makemikari akafanana-ekupedzisira anogona Kuita kuti muchina wepepa ushande zvisina kujairika, kubudisa mavara nemapupu emhepo pabepa, kuderedza kuyerera kwemvura, kuita kuti muchina wepepa uve usina kuchena, uye kuderedza kushanda zvakanaka kwekugadzira. .
Inonyanya kuratidzwa muzvikamu zvinotevera:
1) Kudonha kwe slurry
Drainability ibasa rakakosha mukushanda kwemichina yemapepa.Iyo dhigirii yekudonha kwemvura yewebhu pepa ichakanganiswa nekutenderera pakati pemafibhi nemafibhi uye pakati pemafibhi akanaka nemafibhi akanaka.Kana mapuranga akaumbwa akakura uye ane porous, pulp ichava viscous uye inodzivisa nzira yemvura, nokudaro kuderedza mvura yemvura.
2) Kunaya uye kuwedzera
Sedimentation uye kusvibiswa kunowanzoitika kana makemikari ekupedzisira akanyorova asingachadzoreki, kushandiswa kwakanyanya kweakajairika makemikari ekuwedzera, kusaenzana kwechaji, kusapindirana kwemakemikari, uye kusagadzikana kwemakemikari chiyero, nezvimwewo, izvo zvese zvinogona kutungamirira kune sedimentation uye kusvibiswa mumashini emapepa.Tsvina, kune nzira dzakawanda dzekuchenesa sediment uye tsvina, asi nzira yakanaka ndeyekutsvaga chikonzero chekubuda kwekutonga uye kugadzirisa.
3) Kuumbwa kwefuro
Huni dzehuni dzine zvinhu zvinodzikamisa mweya mukati me pulp (uye mamwe makemikari ekuwedzera anoita zvimwe chetezvo), kuderedza kuyerera kwepulp, zvichikonzera kunamira uye furo.Kana zvikaitika, nzira yakanakisisa ndeyokuwana chinokonzera uye kubvisa.Kana izvi zvisingagoneke, nzira dzemuchina uye dzemakemikari dzinogona kushandiswa kuzvibvisa.Panguva ino, basa rekunyorova kuguma chemistry ishoma.
Nguva yekutumira: Mar-15-2023