Elucidation of anomalous transport phenomena and its application to process intensification

异常输运现象的阐明及其在过程强化中的应用

• 批准号: 23656492
• 负责人: OHMURA Naoto
• 金额: $ 2.5万
• 依托单位: Kobe University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Exploratory Research
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23656492/
• 关键词: 流体; カオス混合; 異常輸送; プロセス強化; 変動操作; 非定常性; 非線形動力学; 撹拌操作; 化学工学; 混合

Anomalous transport phenomena which give faster transport rate of physical properties such as heat and mass than its normal diffusion rate are often observed in non-equilibrium processes. This work tried to elucidate the mechanism of anomalous mass transport phenomena and apply these phenomena to chemical processes by focusing on the effect temporal-special perturbations. This work investigated anomalous mass transport phenomena in Taylor vortex flow and laminar flow in a stirred vessel with turbine impeller. It has been found that coherent structures in flow field and their steadiness are important factors for anomalous transport phenomena. If temporal or special perturbations are imposed a flow field with a resonant frequency with a coherent flow structure, the flow structure is stabilized and the anomalous transport is suppressed. On the other hand, perturbations breaking coherent, symmetry or steadiness structures are imposed, anomalous mass transport is dramatically enhanced. This work also proposed a novel hollow membrane separation process utilizing the above mechanism for enhancement of anomalous mass transport. This novel membrane separation process showed not only higher anti-fouling property but also higher permeability and rejection than an ordinary hollow fiber membrane separation process.

在非平衡过程中，经常观察到热、质等物理性质的反常输运现象。本工作试图阐明反常质量输运现象的机制，并将这些现象应用到化学过程中的时间-空间微扰的影响。本文研究了涡轮机搅拌槽内泰勒涡流和层流中的反常传质现象。研究发现，流场的相干结构及其稳定性是导致反常输运现象的重要因素。如果对具有相干流结构的共振频率的流场施加时间或特殊扰动，则流结构稳定，异常输运被抑制。另一方面，扰动破坏相干结构、对称结构或稳定结构，反常质量输运显著增强。本工作还提出了一种新的中空膜分离过程，利用上述机制的异常质量传输增强。这种新型膜分离过程不仅表现出更高的抗污染性能，而且还表现出更高的渗透率和截留率比普通中空纤维膜分离过程。

项目成果

ダイナミカルネットワーク方法論の撹拌槽内の粒子運動挙動解析への適用

动态网络方法在搅拌槽内颗粒运动行为分析中的应用

• 发表时间: 2012
• 作者: N. Jia;T. Horie;N. Ohmura;平井雄也,白石昇平,山本大吾,塩井章久;山本大吾,向井敦志,塩井章久;佐藤通展;山本大吾,向井敦志,塩井章久;名和愛利香,塩井章久;今井昭寿,熊谷宜久,堀江孝史,大村直人
• 通讯作者: 今井昭寿,熊谷宜久,堀江孝史,大村直人

テイラー・クエット流反応装置を用いた連続操作による糖化プロセス強化

使用 Taylor-Couette 流动反应器连续运行增强糖化过程

• 发表时间: 2012
• 作者: 堀江孝史;増田勇人;Hubacz Robert;大村直人
• 通讯作者: 大村直人

Process Intensification of Water Purification Using Taylor Vortex Photocatalytic Reactor

使用泰勒涡旋光催化反应器强化水净化过程

• 发表时间: 2011
• 期刊: Symposium Series: Proceedings of the 3rd European Process Intensification Conference
• 作者: N. Jia;T. Horie;N. Ohmura
• 通讯作者: N. Ohmura

Segmented flow tubular reactorを用いたシリカ粒子生成プロセス強化

使用分段流管式反应器改进二氧化硅颗粒生产工艺

• 发表时间: 2011
• 作者: 新戸浩幸;森貞真太郎;大塚惟,立石一矢,佐藤通展,堀江孝史,大村直人
• 通讯作者: 大塚惟,立石一矢,佐藤通展,堀江孝史,大村直人

Process Intensification of Continuous Starch Hydrolysis with a Taylor-Couette Flow Reactor

使用泰勒-库埃特流动反应器连续淀粉水解的过程强化

• 发表时间: 2012
• 期刊: Proceedings of 14th European Conference on Mixing, Warsaw, Poland, 10-13 September
• 作者: T. Tsuru;R. Xu;J. Wang;M. Kanezashi;T. Yoshioka;T. Tsuru;T. Tsuru;都留稔了;Hayato Masuda
• 通讯作者: Hayato Masuda