碱抽提对蔗渣碱性过氧化氢法制浆的影响  

Effect of Alkaline Extraction on Hydrogen Peroxide Alkaline Pulping of Bagasse

作　　者：周伦 雷以超[1] ZHOU Lun;LEI Yi-ehao(State Key Laboratory of Pulp and Paper Engineering,South China University of Technology,Guangzhou 510640,China)

机构地区：[1]华南理工大学制浆造纸工程国家重点实验室,广东广州510640

出　　处：《造纸科学与技术》2018年第6期18-21,81,共5页Paper Science & Technology

基　　金：华南理工大学制浆造纸工程国家重点实验室自主创新研究基金(项目编号:2015C06);华南理工大学国家级大学生创新创业训练计划(项目编号:201410561092)

摘　　要：探讨了碱抽提对碱性过氧化氢法制浆的影响,并检测浆的强度性能。实验结果表明:在碱性过氧化氢法蒸煮之前,用浓度40 g/L的氢氧化钠溶液在25℃下抽提1 h,得到的纸浆卡伯值为7.19、黏度为16.85 mPa·s、细浆得率为57.02%、白度为47.17%ISO,相较于未抽提的纸浆卡伯值降低了9.8%,白度提高了1.0%;纸张抗张指数为85.32 N·m/g、撕裂指数3.01 mN·m^2/g、耐破指数4.43 kPa·m^2/g,相较于未抽提的纸浆抗张指数提高了8.04%,耐破指数提高了7.79%。The impact of alkali pre-extraction of bagasse on alkaline hydrogen peroxide pulping was studied. The properties of hydrogen peroxide alkaline pulp were emphatically investigated. The alkaline pretreatment conditions were: NaOH 40 g/L, temperature at 25 ℃ and extraction time 1 h. The main properties of the pulp obtained by this method were: Kappa number 7.19, pulp viscosity 16.85 mPa·s, pulp yield 57.02% and brightness 47.17% ISO. Compared with the pulp without extraction, Kappa number decreased by 9.8% and brightness increased by 1.0%.While for the paper, tensile index, tear index and brust index were 85.32 N·m/g, 3.01 mN·m^2/g and 4.43 kPa·m^2/g. Compared with the pulp without extraction, the tensile index and burst index increased by 8.04% and 7.79%.

关 键 词：蔗渣 碱抽提 过氧化氢 

分 类 号：TS743.1[轻工技术与工程—制浆造纸工程]