Ekukhiqizweni kwephepha lanamuhla, izinto zokusetshenziswa ezisetshenziswa kakhulu yiphepha elingasebenzi kanye ne-virgin pulp, kodwa ngezinye izikhathi iphepha elingasebenzi kanye ne-virgin pulp azitholakali endaweni ethile, kunzima ukuzithola noma kubiza kakhulu ukuzithenga, kulokhu, umkhiqizi angacabanga ukusebenzisa utshani bukakolweni njengezinto zokusetshenziswa ukukhiqiza iphepha, utshani bukakolweni luwumkhiqizo ovamile wezolimo, okulula ukuzithola, luningi ngobuningi futhi lubiza kancane.
Uma kuqhathaniswa ne-fiber yokhuni, i-fiber yotshani lukakolweni iqine kakhulu futhi ibuthakathaka, akulula ukuyixuba ibe mhlophe, ngakho-ke ezimweni eziningi, i-straw kakolweni ivame ukusetshenziswa kakhulu ukukhiqiza iphepha lokufutha noma iphepha eligoqekile, umshini othile wephepha uphinde uxube i-pulp yotshani lukakolweni ne-pulp emsulwa noma iphepha elingcolile ukukhiqiza iphepha lezicubu noma iphepha lasehhovisi elisezingeni eliphansi, kodwa iphepha lokufutha noma iphepha eligoqekile kubhekwa njengomkhiqizo othandwa kakhulu, ngoba inqubo yokukhiqiza ilula kakhulu futhi izindleko zokukhiqiza ziphansi.
Ukuze kukhiqizwe iphepha, utshani bukakolweni kudingeka bunqunywe kuqala, ubude obungu-20-40mm buyathandwa, kulula kakhulu ukuthi utshani budluliselwe noma buxutshwe namakhemikhali okupheka, umshini wokusika utshani bukakolweni ucelwa ukwenza umsebenzi, kodwa ngokushintsha kwemboni yezolimo yanamuhla, ukolweni uvame ukuvunwa yimishini, kulokhu, umshini wokusika awubhekwa njengodingekile. Ngemva kokusika, utshani bukakolweni buzodluliselwa ekuxubeni namakhemikhali okupheka, inqubo yokupheka i-caustic soda ivame ukusetshenziswa kule nqubo, ukunciphisa izindleko zokupheka, amanzi e-lime stone nawo angacatshangelwa. Ngemva kokuba utshani bukakolweni buxutshwe kahle namakhemikhali okupheka, buzodluliselwa ku-digester eyindilinga noma echibini lokupheka elingaphansi komhlaba, ukuze kuphekwe izinto zokusetshenziswa ezincane, ichibi lokupheka elingaphansi komhlaba liyanconywa, ukwakhiwa komsebenzi wokwakha, izindleko ezincane, kodwa ukusebenza kahle okuphansi. Ukuze uthole amandla okukhiqiza aphezulu, kudingeka ucabangele ukusebenzisa i-digester eyindilinga noma idivayisi yokupheka ehambisanayo, inzuzo ukusebenza kahle kokupheka, kodwa-ke, izindleko zemishini nazo zizoba phezulu. Ichibi lokupheka elingaphansi komhlaba noma i-digester eyindilinga lixhunywe nomusi oshisayo, ngokwanda kwezinga lokushisa esitsheni noma ethangini kanye nokuhlanganiswa kwe-ejenti yokupheka, i-lignin ne-fiber kuzohlukaniswa. Ngemva kwenqubo yokupheka, utshani bukakolweni buzothululwa kusuka esitsheni sokupheka noma ethangini lokupheka luye ethangini lokubhula noma ethangini lodaka olulungele ukukhipha i-fiber, umshini ovame ukusetshenziswa umshini wokugcoba, umshini wokuwasha we-pulp osheshayo noma i-bivis extruder, kuze kube yilapho i-fiber kakolweni izokhishwa ngokuphelele, ngemuva kwenqubo yokucwenga nokuhlola, izosetshenziselwa ukwenza iphepha. Ngaphandle kokukhiqizwa kwephepha, i-fiber kakolweni ingasetshenziselwa futhi ukubumba ithreyi yokhuni noma ukubumba ithreyi yamaqanda.
Isikhathi sokuthunyelwe: Septhemba-30-2022