剪切条件下中浓纸浆的流动特性和能量耗散

华南理工大学学报（自然科学版） ›› 2005, Vol. 33 ›› Issue (12): 37-41.

剪切条件下中浓纸浆的流动特性和能量耗散

陈奇峰陈克复杨仁党李军

华南理工大学制浆造纸工程国家重点实验室，广东广州 510640

收稿日期:2004-08-08 出版日期:2005-12-25 发布日期:2005-12-25
通信作者: 陈奇峰(1976-)，男，讲师，博士，主要从事中浓制浆技术与装备的研究 E-mail:qfchen@ scut.edu.ca
作者简介:陈奇峰(1976-)，男，讲师，博士，主要从事中浓制浆技术与装备的研究

Flow Properties and Energy Dissipation of Medium-Consistency Pulp in Shear Condition

Chen Qi-feng Chen Ke-fu ya Ren-dang Li Jun

State Key Laboratory of Pulp and Paper Engineering,South China Univ.of Tech.,Guangzhou 510640,Guandong,China

Received:2004-08-08 Online:2005-12-25 Published:2005-12-25
Contact: Chen Qi·feng(born in 1976)，male，lecturer，Ph．D．，mainly researches on medium—consistency pulpingtechnology and equipment E-mail:qfchen@ scut.edu.ca
About author:Chen Qi·feng(born in 1976)，male，lecturer，Ph．D．，mainly researches on medium—consistency pulpingtechnology and equipment

摘要/Abstract

摘要： 对中浓纸浆悬浮液在剪切室内的流动特性和能量耗散进行了研究．结果表明：中浓纸浆悬浮液在高剪切应力下可以达到流体化状态，此时其流动特性与水类似；根据中浓纸浆在流体化过程中的温度变化可以计算其能量耗散值；由于中浓纸浆中纤维之间存在着较大的摩擦力，因此耗散的能量与输入能量的比值很高，这对于中浓纸浆的泵送是很不利的；当中浓纸浆质量分数为13．2%时，其在流体化状态下的能量耗散值为498．96 kW/m³ ，表观粘度为7．94 Pa·S，所耗散的能量占输入能量的45．62% ，且随着纸浆质量分数的升高而增大

关键词: 中浓纸浆, 流动特性, 能量耗散, 表观粘度, 剪切应力

Abstract:

This paper studies the flow properties and energy dissipation of medium-consistency(MC)pulp SUS-pension in rotary device.The results indicate that(1)MC pulp suspension is of similar flow properties to waterwhen it displays fluid·like behavior(fluidization)in rotary device under high shear stress;(2)the energy dis-sipation of MC pulp suspension can be estimated by the temperature change during the fluidization;(3)be-cause of the large friction among fibres,the energy dissipation occupies a high ratio to the input energy duringthe fluidization,being disadvantageous to the pumping of MC pulp suspension;and(4)the apparent viscosityof the pulp suspension with a mass fraction of 13.2% is 7.94 Pa·s.and the corresponding energy dissipation
is 498.96 kW/m,which is 45.62% of the input energy and increases with the mass fraction of the suspension.

Key words: medium-consistency pulp suspension, flow property, energy dissipation, apparent viscosity, shear stress

陈奇峰陈克复杨仁党李军. 剪切条件下中浓纸浆的流动特性和能量耗散[J]. 华南理工大学学报（自然科学版）, 2005, 33(12): 37-41.

Chen Qi-feng Chen Ke-fu ya Ren-dang Li Jun. Flow Properties and Energy Dissipation of Medium-Consistency Pulp in Shear Condition[J]. Journal of South China University of Technology (Natural Science Edition), 2005, 33(12): 37-41.

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