蔗渣氧碱蒸煮技术研究 第一部分--单段蒸煮条件对成浆性能的影响  

Study on Bagasse Oxygen-alkali Pulping Technology-Part Ⅰ: Effect of the First Stage Oxygen-alkali Pulping Conditions on Pulping Performance

作　　者：苗国华 王正丰 李靖 陈克利[1] 赵金涛 温建宇 何亮 MIAO Guo-hua;WANG Zheng-feng;LI Jing;CHEN Ke-li;ZHAO Jin-tao;WEN Jian-ning;HE Liang(Faculty of Chemical Engineering,Kunming University of Science and Technology,Kunming 650500,China;China Tobacco Yunnan Reconstituted Tobacco Co.,Ltd,Kunming 650106,China;China Light Paper Inspection&Certification Co.,Ltd,Beijing 100102,China;State Key Laboratory of Pulp and Paper Engineering,South China University of Technology,Guangzhou 510640,China)

机构地区：[1]昆明理工大学化学工程学院,云南昆明650500 [2]云南中烟再造烟叶有限责任公司,云南昆明650106 [3]中轻纸品检验认证有限公司,北京100102 [4]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：《纤维素科学与技术》2021年第3期1-8,共8页Journal of Cellulose Science and Technology

基　　金：国家自然科学基金(21968014)、(21576105);华南理工大学制浆造纸工程国家重点实验室开放基金(202004)。

摘　　要：以蔗渣为原料,探究了不同用碱量(20%、25%、30%、35%)、保温时间(120、180、240 min)、最高蒸煮温度(110、120℃)、镁基保护剂(MgSO_(4))的用量(0.0%、0.5%、1.0%、2.0%)和加入顺序对蔗渣单段氧碱制浆性能的影响。结果表明:当液比为1∶7时,采用0.5%(以原料绝干计)的硫酸镁预浸渍,然后再加入氢氧化钠的方式,在用碱量为25%、氧压为0.5 MPa、最高温度为110℃、保温时间为180 min的条件下可得到最佳的成浆效果。此时,所得细浆的得率为58.61%,卡伯值为13.0、特性粘度为787 mg/L,对应的筛渣率为3.54%。本研究可为后续化学预处理和综合预处理辅助氧碱制浆两部分研究提供参考,以期为蔗渣高效制浆技术的开发提供一定技术支持。The effects of different alkali charges(20%,25%,30%,35%),cooking time(120,180,240 min),maximum cooking temperature(110,120℃),dosage of MgSO4(0.0%,0.5%,1.0%,2.0%)and addition sequence on the pulp formation performance of bagasse the first stage oxygen-alkali pulping were investigated using bagasse as raw material.The results showed that the best pulp formation effect was obtained by using 0.5%(in terms of raw material absolute dryness)of MgSO4 preimpregnation,followed by the addition of alkali charge of 25%,0.5 MPa of oxygen pressure,110℃of maximum temperature and 180 min of holding time,at a liquid ratio of 1∶7.At this time,the screened pulp yield of 58.61,the sieve residue rate of 3.54%,the kappa number of 13.0 and the viscosity of 787 mg/L was obtained.This study will provide a reference for the subsequent research of both chemical pretreatment oxygen-alkali pulping and comprehensive pretreatment oxygen-alkali pulping,in order to provide some theoretical support for the efficient utilization of bagasse waste in oxy-alkali pulping industry.

关 键 词：蔗渣 氧碱蒸煮 单段蒸煮 成浆性能 镁基保护剂 

分 类 号：TS7431[轻工技术与工程—制浆造纸工程]