红麻皮硫酸盐浆的高白度无氯漂白  

High Brightness TCF Bleaching of Kenaf Bast Kraft Pulp

作　　者：侯世珍[1] 马乐凡[1] 

机构地区：[1]西北轻工业学院

出　　处：《中国造纸》1994年第4期23-28,共6页China Pulp & Paper

摘　　要：对红麻皮ＫＰ浆常规多段漂白及无氯多段漂白工艺与机理进行了对比研究。采用ＣＥＨＰ漂白，总用氯量４．９％，Ｈ２Ｏ２用量０．５％，可漂至８７．１％白度。采用ＺＥｐＺＰ无氯漂白，Ｚ漂白浓度在５０％为最佳，Ｏ３总用量１．７％，Ｈ２Ｏ２总用量１．５％，可漂至８７．２％白度，虽然纸浆粘度比前者低１２．６％，但其强度还略优于前者。ＩＲ分析表明：臭氧漂白引起纤维素结晶指数的降低比常规漂白大。ＦＴ－ＩＲ差谱分析证明了漂白过程中木素的溶出。Comparision of TCF bleaching of ZEpZP sequence and conventional bleaching of CEHP sequence of kenaf bast kraft pulp was studied. Brightness value of 87.1% could be obtained by CEHP bleaching with total chlorine charge of 4.9% and hydrogen peroxide charge of 0.5%; the same brightness could also be obtanined by ZEpZP bleaching when ozone bleaching stage was in 50% consistency and total ozone charge was 1.7%, and total hydrogen peroxide charge was 1.5% in Ep and P stages. Strength of TCF bleached pulp was superior to CEHP bleached pulp although the viscosity of former was 12.6% lower than that of later. IR analysis indicated that more serious reduction of cellulose crystallinity index was found in ozone stage,and FT-IR deconvoluted spectra illustrated clearly the removal of lignin in bleaching.

关 键 词：红麻皮 硫酸盐浆 漂白 过氧化氢 

分 类 号：TS745[轻工技术与工程—制浆造纸工程]