Inkqubo yokumhlopheza i-ECF engena-chlorine kwizicubu ze-bamboo

Sinembali ende yokwenza iphepha le-bamboo eTshayina. Imo yefayibha ye-bamboo kunye nokwakheka kweekhemikhali zikhethekile. Ubude obuqhelekileyo befayibha bude, kwaye isakhiwo se-microcell yodonga lwefayibha sikhethekile. Ukusebenza kophuhliso lwamandla ngexesha lokugaya kulungile, okunika i-bleached pulp iipropati ezintle zokukhanya okuphezulu kunye ne-coefficient yokusasaza ukukhanya. Umxholo we-lignin wezinto eziluhlaza ze-bamboo (malunga ne-23%-32%) uphezulu, nto leyo emisela ubungakanani be-alkali ephezulu kunye ne-sulfidation degree ngexesha lokugaya nokupheka (i-sulfidation degree ngokubanzi yi-20%-25%), esondelelene nomthi we-coniferous. Umxholo ophezulu we-hemicellulose kunye ne-silicon wezinto eziluhlaza uzisa ubunzima obuthile ekusebenzeni okuqhelekileyo kwenkqubo yezixhobo zokuhlamba i-pulp kunye ne-black liquor evaporation kunye ne-concentration. Nangona kunjalo, izinto eziluhlaza ze-bamboo zisesezixhobo ezilungileyo zokwenza iphepha.

Inkqubo yokufunxa i-bleach yezityalo ezinkulu neziphakathi ze-bamboo pulping ngokusisiseko iya kusebenzisa inkqubo yokufunxa i-TCF okanye i-ECF. Ngokubanzi, xa idibene ne-designification enzulu kunye ne-oxygen deignification ye-pulping, kusetyenziswa iteknoloji yokufunxa i-TCF okanye i-ECF. Ngokuxhomekeke kwinani lezigaba zokufunxa, i-bamboo pulp ingafunxa i-bleach ifikelele kukukhanya kwe-88%-90%.

Iithishu zethu ze-bamboo pulp ezifakwe i-bleached zonke zifakwe i-bleach nge-ECF (engena-chlorine ye-elemental), elahlekelwa yi-bleach encinci kwi-bamboo pulp kunye ne-pulp viscosity ephezulu, ngokubanzi ifikelela ngaphezulu kwe-800ml/g. Iithishu ze-bamboo ezifakwe i-bleached ze-ECF zinomgangatho ongcono we-pulp, zisebenzisa iikhemikhali ezimbalwa, kwaye zisebenza kakuhle nge-bleach. Kwangaxeshanye, inkqubo yezixhobo ivuthiwe kwaye ukusebenza kwayo kuzinzile.

Amanyathelo enkqubo yokunyibilikisa i-ECF elemental chlorine-free chlorine kwizicubu ze-bamboo ngala: okokuqala, i-oksijini (02) ifakwa kwi-oxidation tower ukuze i-oxidative delignification, emva koko i-D0 bleaching-washing-Eop extraction-washing-D1 bleaching-washing yenziwa ngokulandelelana emva kokuhlamba. Ii-chemical bleaching agents eziphambili yi-CI02 (chlorine dioxide), i-NaOH (sodium hydroxide), i-H202 (hydrogen peroxide), njl. Okokugqibela, i-bleached pulp yenziwa kukuphelelwa ngamanzi emzimbeni. Ubumhlophe be-bleached bamboo pulp tissue bunokufikelela ngaphezulu kwe-80%.