摘要
对柠条(Caragana korshinskii)全杆进行了碱预处理双螺杆APMP制浆条件的实验室小试和工厂中试,并探讨了柠条碱预处理双螺杆APMP浆料纤维形态特征和浆料物理性能。小试结果表明,柠条经过NaOH在90℃下预处理后,再用双螺杆进行APMP法制浆所得浆料的抗张指数、白度、环压强度和纸浆得率均高于柠条CMP浆。中试研究进一步表明,柠条碱预处理双螺杆APMP浆经两段H2O2(每段2%H2O2)漂白后,浆料白度达到70.1%。实验室小试的柠条双螺杆APMP浆的纤维长度总体偏短,质均长度为0.655 mm。而工厂中试的双螺杆APMP浆的纤维质均长度提高到0.803 mm,说明大直径双螺杆能减少对纤维的切断。
The laboratory experiment and pilot test of twin-screw APMP pulping with alkali preteatment of whole stalk of Caragana korshinskii were carried out.The morphological characteristics of the twin-screw APMP pulp and the physical properties of the paper were investigated.The experimental results showed that after pretreatment of Caragana korshinskii by NaOH at 90℃,the paper obtained had higher tensile index,brigtness,ring crush strength and pulp yield than those of CMP of Caragana korshinskii.The pilot test further showed that the brigtness of twin-screw APMP pulp from Caragana korshinskii reached 70.1% after two stages of H2O2 bleaching(2% H2O2 per stage).The fiber length of the Caragana korshinskii twin-screw APMP pulp in the laboratory test was generally short,and the weight average length was 0.655 mm.The weight average fiber length of the pilot test twin-screw APMP pulp increased to 0.803 mm,indicating that the large-diameter twinscrew could reduce fiber cutting.
作者
刘雁超
毕淑英
汤斌
吴宏飞
蒋晨
谢益民
王磊
王鹏
LIU Yanchao;BI Shuying;TANG Bin;WU Hongfei;JIANG Chen;XIE Yimin;WANG Lei;WANG Peng(Research Institute of Pulp and Paper Engineering,Hubei University of Technology,Wuhan,Hubei Province,430068;Beijing Jinluntang Technology Development Co.,Ltd.,Beijing,100088)
出处
《中国造纸》
CAS
北大核心
2020年第2期9-14,共6页
China Pulp & Paper
关键词
柠条
双螺杆APMP
碱预处理
H2O2漂白
纤维形态
Caragana korshinskii
twin-screw APMP
alkali pretreatment
H2O2 bleaching
fiber morphology
