蔗渣氧碱蒸煮工艺研究第三部分——综合预处理的影响  

Study on Bagasse Oxygen-alkali Pulping Technology-PartⅢ:Effect of Integrated Pretreatment

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》2022年第1期8-14,共7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：在单段氧碱制浆和化学预处理氧碱制浆研究的基础上,继续对机械预处理、生物预处理以及综合预处理辅助氧碱制浆的成浆性能进行了探究。结果表明:生物预处理最适合低温氧碱制浆,但预处理周期较长;而机械预处理更适合与其它预处理方式相结合使用。经过对比分析,得到了适用于提升低温氧碱制浆效能的综合预处理方式。具体工艺为:首先将生物预处理后的蔗渣原料在90℃的热水中预浸渍5 h后,再利用粉碎机破碎至40目以下,然后加入0.5%(wt)的硫酸镁溶液与蔗渣混合均匀,在液比为1∶7的前提下补充碱液至蒸煮用碱量为25%后,在氧压0.5 MPa、最高蒸煮温度95℃、保温时间180 min的工艺下蒸煮。最终可获得细浆得率为60.23%、卡伯值为12.8、粘度842 mL/g、筛渣率为2.65%的浆料。Based on the studies of first-stage oxygen-alkali pulping and chemical pretreatment oxygen-alkali pulping,this paper continues to investigate the pulping performance of mechanical,biological,and comprehensive pretreatment-assisted oxygen-alkali pulping.The results showed that the biological pretreatment was most suitable for low-temperature oxygen-alkali pulping,but the pretreatment period was longer;while the mechanical pretreatment was more to be used in combination with other pretreatment methods.After comparative analysis,a comprehensive pretreatment method suitable for improving the performance of low-temperature oxygen-alkali pulping was obtained.The specific process was as follows:firstly,the bagasse raw material after biological pretreatment was pre-impregnated in hot water at 90℃for 5h,and then crushed to below 40 mesh using a crusher,then 0.5%(wt).of MgSO_(4) solution was added and mixed well with bagasse,and the lye was supplemented to 25%of alkali charge for cooking under the premise of solid-liquid ratio of 1∶7,and then cooked under the process of oxygen pressure of 0.5MPa,the maximum cooking temperature of 95℃and holding time of 180 min.The final pulp with 60.23%the screened pulp yield,2.65%sieve residue rate,13.0 kappa number,842 mg/L viscosity was obtained.

关 键 词：蔗渣 机械预处理 生物预处理 综合预处理 氧碱制浆 

分 类 号：TS215[轻工技术与工程—粮食、油脂及植物蛋白工程]