Mokhoa oa ho soeufatsa lisele tsa lehlaka ntle le chlorine ea ECF

Re na le nalane e telele ea ho etsa pampiri ea lehlaka Chaena. Sebopeho sa fiber ea lehlaka le metsoako ea lik'hemik'hale li ikhetha. Bolelele ba fiber bo tloaelehileng bo bolelele, 'me sebopeho sa lebota la sele ea fiber se ikhetha. Ts'ebetso ea nts'etsopele ea matla nakong ea ho pulping e ntle, e fa pulp e soeufalitsoeng litšobotsi tse ntle tsa optical tsa ho se bonahale hantle le coefficient ea ho hasana ha leseli. Likahare tsa lignin tsa thepa e tala ea lehlaka (hoo e ka bang 23%-32%) li phahame, e leng se etsang qeto ea bongata bo phahameng ba alkali le tekanyo ea sulfidation nakong ea ho pulping le ho pheha (tekanyo ea sulfidation hangata ke 20%-25%), e leng haufi le lehong la coniferous. Likahare tse phahameng tsa hemicellulose le silicon tsa thepa e tala le tsona li tlisa mathata a itseng ts'ebetsong e tloaelehileng ea sistimi ea ho hlatsoa pulp le ho mouoane ha joala bo botšo le lisebelisoa tsa mahloriso. Ho sa tsotellehe sena, thepa e tala ea lehlaka e ntse e le thepa e ntle ea ho etsa pampiri.

Sistimi ea ho soeufatsa ea limela tse kholo le tse mahareng tsa ho soeufatsa tsa lehlaka e tla sebelisa mokhoa oa ho soeufatsa oa TCF kapa ECF. Ka kakaretso, hammoho le ho soeufatsa ho tebileng le ho soeufatsa oksijene ha ho soeufatsa, ho sebelisoa theknoloji ea ho soeufatsa ea TCF kapa ECF. Ho latela palo ea mekhahlelo ea ho soeufatsa, pulp ea lehlaka e ka soeufatsa ho fihlela khanya ea 88%-90%.

Lithapo tsa rona tsa lehlaka la bamboo tse soeufalitsoeng kaofela li soeufalitsoe ka ECF (e se nang chlorine ea motheo), e nang le tahlehelo e fokolang ea ho soeufala holim'a lehlaka la bamboo le viscosity e phahameng ea lehlaka, ka kakaretso e fihlang ho feta 800ml/g. Lithapo tsa lehlaka la bamboo tse soeufalitsoeng tsa ECF li na le boleng bo betere ba lehlaka, li sebelisa lik'hemik'hale tse fokolang, 'me li na le bokhoni bo phahameng ba ho soeufatsa. Ka nako e ts'oanang, sistimi ea lisebelisoa e butsoitse 'me ts'ebetso ea ts'ebetso e tsitsitse.

Mehato ea ts'ebetso ea ho soeufatsa lisele tsa lehlaka ntle le chlorine ea ECF ke: ea pele, oksijene (02) e kenngoa ka har'a tora ea oxidation bakeng sa ho nyenyefatsa oxidative, ebe ho hlatsoa ka bleaching ea D0-washing-Eop extraction-washing-D1 ho etsoa ka tatellano kamora ho hlatsoa. ​​Lisebelisoa tse ka sehloohong tsa ho soeufatsa lik'hemik'hale ke CI02 (chlorine dioxide), NaOH (sodium hydroxide), H202 (hydrogen peroxide), jj. Qetellong, pulp e soeufalitsoeng e etsoa ke ho felloa ke metsi ka khatello. Bosoeu ba lisele tsa lehlaka tse soeufalitsoeng bo ka fihla ho feta 80%.