饶佳玮,李军,刘晓雯,陈方军,熊勤钢.基于停留时间和应变率的盘磨机磨区浆料流动特性与磨浆质量的关联研究[J].中国造纸,2026,45(6):212-221 本文二维码信息
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基于停留时间和应变率的盘磨机磨区浆料流动特性与磨浆质量的关联研究
Study on the Correlation between Flow Characteristics Based on Residence Time and Strain Rate and Refining Quality in the Refining Zone of a Disc Refiner
收稿日期：2025-12-24  修订日期：2026-01-24
DOI：10.11980/j.issn.0254-508X.2026.06.024
关键词:  盘磨机  浆料流动特性  磨浆质量  计算流体力学
Key Words:disc refiner  flow characteristics of pulp  refining quality  computational fluid dynamics
基金项目:国家重点研发计划项目课题（2023YFD2201902）。
作者单位邮编
饶佳玮* 华南理工大学先进造纸与纸基材料全国重点实验室,广东广州,510640 510640
李军 华南理工大学先进造纸与纸基材料全国重点实验室,广东广州,510640 510640
刘晓雯 华南理工大学先进造纸与纸基材料全国重点实验室,广东广州,510640 510640
陈方军 华南理工大学先进造纸与纸基材料全国重点实验室,广东广州,510640 510640
熊勤钢* 华南理工大学先进造纸与纸基材料全国重点实验室,广东广州,510640 510640
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摘要:为深入理解浆料在盘磨机磨区内的流动机制与磨浆质量的关系，本研究结合磨浆实验与计算流体力学（CFD），模拟计算了浆料在有无挡坝结构磨盘中的流动特性，并通过与磨浆实验测得打浆度建立关联，构建基于应变率和停留时间的浆料流动特性指标与磨浆质量的关联模型，定量分析了二者变化对打浆度的影响。结果表明，磨盘挡坝能够调控浆料在磨区内的流动方向与路径，使浆料平均停留时间由0.593 s提升至0.699 s，增幅达17.9%，进而提升磨浆质量。当浆料在磨区内同时处于较高应变率与较长停留时间时，其对应打浆度整体处于较高水平；应变率与停留时间存在显著的交互作用，而应变率过高并不会持续提升磨浆质量，当应变率达约660 s-1时，继续增大应变率可能抑制打浆度的进一步提高。本研究建立的多参数关联模型R2=0.951 2，在进浆流量3 kg/s、磨盘转速296 r/min、盘磨间隙0.2 mm工艺条件下，预测打浆度与实验值分别为12.09和12.10 °SR，证明所建立模型具有较高的预测准确性与可靠性。
Abstract:To gain a deeper understanding of the relationship between the flow mechanism of pulp within the refining zone of a disc refiner and refining quality， this study combined computational fluid dynamics (CFD) simulations with refining experiments to investigate how the flow characteristics of pulp in refining discs with and without dams influence refining quality. By establishing correlations between the beating degree measured in refining experiments and the flow characteristics based on strain rate and residence time， a correlation model relating pulp flow characteristics to refining quality was developed to analyze quantitatively the effects of these two factors on beating degree. The results showed that the dams could regulate the flow direction and trajectories of the pulp within the refining zone， increasing the average residence time of the pulp from 0.593 s to 0.699 s， representing an increase of 17.9%， thereby improving refining quality. When the pulp simultaneously experienced a relatively high strain rate and a long residence time in the refining zone， the corresponding beating degree generally reached a higher level. A significant interaction between strain rate and residence time was observed， while excessively high strain rates did not continuously improve refining quality. When the strain rate reached approximately 660 s-1， a further increase in strain rate might suppress the further improvement of beating degree. The multi-parameter correlation model established in this study achieved a R2 value of 0.951 2. Under the process conditions of 3 kg/s of feed flow rate， 296 r/min of disc rotation speed， and 0.2 mm of discs gap， the predicted and experimental beating degree was 12.09 and 12.10 °SR, respectively， proving the established model had high prediction accuracy and reliability.
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