Kev Ceeb Toom Rau Kev Siv Defoamers

Defoamers feem ntau yog tsim los ntawm kev sib xyaw ntau yam. Kev ua tau zoo ntawm lub ntsiab defoamers tuaj yeem txhim kho los ntawm kev sib xyaw ntawm surfactants. Txawm hais tias ib qho tshuaj nquag tsim nyog rau defoaming nyob ntawm nws daim ntawv thov. Stearic acid yog defoamer nyob rau hauv acidic tej yam kev mob; Nyob rau hauv alkaline tej yam kev mob, nws yog ib tug foaming neeg sawv cev. Nws muaj txiaj ntsig zoo ntawm qhov kub thiab txias, tab sis tsis ua haujlwm ntawm qhov kub thiab txias.
(1) Cov ntsiab lus ntxiv ntawm defoamer: Hauv lub tshuab pulp, defoamer feem ntau yog ntxiv rau hauv cov tshuaj dawb thiab ntxuav, feem ntau hauv lub tshuab ntxhua khaub ncaws, thickener, thiab pulp tank. Tus neeg sawv cev defoaming nyob rau hauv seem papermaking feem ntau ntxiv rau lub tshuab ntawv lub thawv ntawv, lub pas dej ua ke, txheej, thiab sizing thiab nias qhov chaw.
(2) Dosage of defoamer: Feem ntau, siv ob hom defoamers yog kev lag luam ntau dua thiab siv tau zoo dua li siv ib qho nrog cov ntsiab lus siab dua. Lawv raug ntxiv cais nyob rau hauv cov cheeb tsam uas nyob deb. Piv txwv li, ib qho defoamer ntxiv rau pem hauv ntej ntawm tus ntaus, thiab lwm qhov ntxiv rau hauv lub taub hau.
(3) Kev daws rau nag lossis daus ntawm defoamers: xws li amide defoamers, tuaj yeem ua rau nag lossis daus thiab thaiv lub sieve phaj qhov sib txawv, uas tuaj yeem ua rau muaj teeb meem ntawm daim ntawv xws li fisheye me ntsis vim tsis zoo dispersion. Qee cov defoamers tuaj yeem cuam tshuam nrog cov teebmeem ntawm gluing thiab kev txhawb zog. Yog li ntawd, lub tshuab lotion siab muaj ib qho zoo heev defoaming nyhuv nyob rau hauv lub siab thiab tsis tshua muaj viscosity napping txheej.