Ekukhiqizeni iphepha lesimanje, izinto ezisetshenziswa kakhulu zokusetshenziswa yiphepha elingcolile kanye ne-pulp emsulwa, kodwa ngezinye izikhathi imfucuza yephepha kanye ne-virgin pulp ayitholakali endaweni ethile, kunzima ukuthola noma kubiza kakhulu ukuthenga, kulokhu, umkhiqizi angacabangela ukusebenzisa utshani kakolweni njengempahla eluhlaza ukuze kukhiqizwe iphepha, utshani lukakolweni luyinto evamile ngomkhiqizo wokulima, inani elincane kakhulu lokulithola.
Uma kuqhathaniswa ne-wood fiber, i-wheat straw fiber i-crispy futhi ibuthakathaka, akulula ukwenza i-bleach emhlophe, ngakho-ke esikhathini esiningi, utshani lukakolweni luvame ukusetshenziselwa ukukhiqiza iphepha elithambile noma iphepha likathayela, elinye igayo lephepha libuye lixube i-pulp kakolweni nge-pulp emsulwa noma imfucuza ukuze kukhiqizwe ikhwalithi ephansi yephepha lokukhipha izicubu noma iphepha lomkhiqizo oyintandokazi kubhekwe njengephepha lokukhiqiza eliyintandokazi, kodwa ukukhiqizwa kwephepha elithandwayo. inqubo ilula kakhulu futhi izindleko zokukhiqiza zincane.
Ukuze kukhiqizwe iphepha, utshani lukakolweni ludinga ukusikwa kuqala, ubude obungama-20-40mm bukhethwa, kulula kakhulu ukuthi utshani budluliswe noma buhlanganiswe namakhemikhali okupheka, umshini wokusika utshani kakolweni ucelwa ukuba wenze lo msebenzi, kodwa ngokushintsha kwemboni yezolimo yesimanje, ukolweni uvame ukuvunwa ngemishini, kulokhu, umshini wokusika awubhekwa njengesidingo. Ngemuva kokusika, utshani lukakolweni luzodluliselwa ukuze luxube namakhemikhali okupheka, inqubo yokupheka i-caustic soda ivame ukusetshenziswa kule nqubo, ukunciphisa izindleko zokupheka, amanzi e-lime stone angabuye acatshangelwe. Ngemuva kokuthi utshani lukakolweni luxubene kahle namakhemikhali okupheka, luzodluliselwa ku-digester eyindilinga noma ichibi lokupheka elingaphansi komhlaba, ukuze uthole ukupheka okuncane okuluhlaza, ichibi lokupheka elingaphansi komhlaba liyanconywa, ukwakhiwa komsebenzi womphakathi, izindleko ezincane, kodwa ukusebenza kahle okuphansi. Ukuze uthole umthamo ophakeme wokukhiqiza, udinga ukucabangela ukusebenzisa i-digester eyindilinga noma idivayisi yokupheka ehlangene, inzuzo ukupheka kahle, kodwa-ke, izindleko zemishini zingaba phezulu futhi. I-pool yokupheka engaphansi komhlaba noma i-digester eyindilinga ixhunywe ne-steam eshisayo, ngokunyuka kwezinga lokushisa emkhunjini noma ethangini kanye nokuhlanganiswa kwe-agent yokupheka, i-lignin ne-fiber izohlukaniswa nomunye nomunye. Ngemuva kwenqubo yokupheka, utshani lukakolweni luzothululwa emkhunjini wokupheka noma ithangi lokupheka ku-blow bin noma ithangi le-sediment elilungele ukukhipha i-fiber, umshini ovame ukusetshenziswa umshini wokukhipha i-bleaching, umshini wokuwasha i-pulp esheshayo noma i-bivis extruder, kuze kube yileso sikhathi i-fiber straw kakolweni izokhishwa ngokugcwele, ngemva kwenqubo yokucwenga nokuhlola, izosetshenziselwa ukwenza iphepha. Ngaphandle kokukhiqizwa kwephepha, i-fiber straw fiber ingasetshenziselwa ukubumba ithreyi lezinkuni noma ukubumba ithreyi lamaqanda.
Isikhathi sokuthumela: Sep-30-2022