纸浆纤维悬浮液在磁力搅拌中的面积浓度变化  

Area Concentration Change of Pulp Fiber Suspensions in a Magnetic Stirring

作　　者：曾劲松[1] 唐大荣[1] 宋天雄 高文花[1] ZENG Jin-song;TANG Da-rong;SONG Tian-xiong;GAO Wen-hua(Plant Micro/Nano Fiber Research Center, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 5106d0, 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植物微纳米纤维素研究中心,广东广州510640

出　　处：《造纸科学与技术》2018年第2期6-10,47,共6页Paper Science & Technology

基　　金：广东省科技计划项目(2015B020241001)

摘　　要：纸浆纤维与液体在磁力搅拌中是否混合均匀,一直是人们关心而又无法得知的问题。采用粒子图像测速(PIV)和Matlab技术,对磁性搅拌器中不同质量百分浓度蔗渣/针叶木纸浆纤维悬浮液的流场进行了分析,提出了面积浓度概念,探讨了在不同转速下纸浆纤维悬浮液面积浓度变化情况。结果表明:不同质量百分浓度的蔗渣浆纤维悬浮液以及针叶木纸浆纤维悬浮液的面积浓度随着磁力搅拌器转速增大呈非线性增大变化规律;纸浆纤维悬浮液浓度增大,其相同转速下的面积浓度也对应增大;0.005%蔗渣纸浆纤维悬浮液的面积浓度变化大于0.01%蔗渣纸浆纤维悬浮液,针叶木纸浆纤维悬浮液恰好相反。The flow fields of bagasse/softwood pulp fiber suspensions with different rotation speeds in magnetic stirrers were analyzed by particle image velocity measurement （PIV） and Matlab technology. The area concentration of pulp fiber suspension was proposed. The results show that the area concentration of the fiber suspensions nonlinearly increased with rotation speeds ; in the same rotation speeds, the area concentration corresponding increases with the concentration of pulp fiber suspensions; the area concentration of 0. 005% bagasse pulp fiber suspensions changes greater than that of 0. 01%. Softwood pulp fiber suspensions present a contrary regulation.

关 键 词：PIV MATLAB 纸浆纤维悬浮液 磁性搅拌 面积浓度 

分 类 号：TS753[轻工技术与工程—制浆造纸工程]