Tine nhoroondo refu yekugadzira mapepa ebamboo muChina. Magadzirirwo efiber yebamboo uye kuumbwa kwemakemikari zvakasiyana. Avhareji yehurefu hwefiber yakareba, uye microstructure yemadziro efiber cell yakakosha. Simba rekukura kwesimba panguva ye pulping rakanaka, zvichipa bleached pulp yakanaka ye optical properties ye high opacity uye light scattering coefficient. Lignin ye lignin yezvinhu zvebamboo (inenge 23%-32%) yakakwira, izvo zvinosarudza huwandu hwakawanda hwealkali uye sulfidation degree panguva ye pulping nekubika (sulfidiation degree inowanzova 20%-25%), iyo iri pedyo ne coniferous wood. Hemicellulose yakawanda uye silicon yezvigadzirwa zvebamboo zvinounzawo mamwe matambudziko pakushanda kwakajairika kwe pulp washing uye black liquoise evaporation uye concentration equipment system. Pasinei neizvi, zvinhu zvebamboo zvichiri zvinhu zvakanaka zvekugadzira mapepa.
Sisitimu yekuchenesesa yemiti mikuru nepakati yemubamboo inoshandisa makemikari inozoshandisa nzira yekuchenesesa yeTCF kana ECF. Kazhinji, pamwe chete nekuchenesesa kwakadzama uye kuchenesesa kweokisijeni yemubamboo, tekinoroji yekuchenesesa yeTCF kana ECF inoshandiswa. Zvichienderana nehuwandu hwematanho ekuchenesesa, mubamboo pulp unogona kuchenesesa kusvika 88%-90%.
Matumba edu ebamboo bleached pulp ese akacheneswa neECF (elemental chlorine), iyo ine kurasikirwa kushoma kwekucheneswa pabamboo pulp uye viscosity yakakura yepulp, inowanzo svika kupfuura 800ml/g. Matumba ebamboo bleached eECF ane mhando yepulp iri nani, anoshandisa makemikari mashoma, uye ane kushanda kwakanaka kwekucheneswa. Panguva imwe chete, sisitimu yemidziyo yakakura uye mashandiro ayo akagadzikana.
Matanho ekugadzirisa ECF elemental chlorine-free chlorine tissues ndeaya: kutanga, okisijeni (02) inopinzwa mu oxidation tower kuti ioxidative delignization, uye D0 bleaching-washing-Eop extraction-washing-D1 bleaching-washing inoitiswa zvakatevedzana mushure mekusukwa. Mishonga mikuru ye bleaching ndeye CI02 (chlorine dioxide), NaOH (sodium hydroxide), H202 (hydrogen peroxide), nezvimwewo. Pakupedzisira, bleached pulp inoumbwa ne pressure dehydration. Kuchena kwe bleached bamboo pulp tissue kunogona kusvika kupfuura 80%.
Nguva yekutumira: Nyamavhuvhu-22-2024
