| T型反应器内流动、混合及界面反应特征 |
| |
| 引用本文： | 张航,张巍,李伟锋,刘海峰,王辅臣. T型反应器内流动、混合及界面反应特征[J]. 化工学报, 2021, 72(10): 5064-5073. DOI: 10.11949/0438-1157.20210386 |
| |
| 作者姓名： | 张航 张巍 李伟锋 刘海峰 王辅臣 |
| |
| 作者单位： | 华东理工大学洁净煤技术研究所,上海煤气化工程技术研究中心,上海200237 |
| |
| 基金项目： | 国家自然科学基金项目(21776072) |
| |
| 摘 要： | 利用平面激光诱导荧光（PLIF）技术和酚酞显色反应，对不同Reynolds数（20<Re<420）下T型反应器内的复杂流动结构及界面反应进行了可视化研究。随着入口Re的增加，反应器内依次出现分离流、稳态吞噬流、非稳态吞噬流及非稳态对称流等流动模式。重点考察了不同流动模式下T型反应器内的界面反应特征，结合流动模式对混合效果、产物浓度分布及时间演化进行了分析，揭示了反应器内复杂流场对混合及界面反应的影响机理。结果表明，吞噬流三维旋涡结构使流体相互卷吸缠绕，通过折叠拉伸形成层状的流体界面，极大增加了反应物的界面接触面积，混合及反应程度显著提升，产物浓度较高且分布均匀。
|
| 关 键 词： | T型反应器 平面激光诱导荧光 流动 混合 界面反应 |
| 收稿时间： | 2021-03-16 |
Characteristics of flow,mixing and interfacial reaction in T-jet reactor |
| |
| Hang ZHANG,Wei ZHANG,Weifeng LI,Haifeng LIU,Fuchen WANG. Characteristics of flow,mixing and interfacial reaction in T-jet reactor[J]. Journal of Chemical Industry and Engineering(China), 2021, 72(10): 5064-5073. DOI: 10.11949/0438-1157.20210386 |
| |
| Authors: | Hang ZHANG Wei ZHANG Weifeng LI Haifeng LIU Fuchen WANG |
| |
| Affiliation: | Shanghai Engineering Research Center of Coal Gasification, Institute of Clean Coal Technology, East China University of Science and Technology, Shanghai 200237, China |
| |
| Abstract: | The complex flow structure and interface reaction in the T-jet reactor under different Reynolds numbers (20<Re<420) were visualized by using planar laser induced fluorescence (PLIF) technology and phenolphthalein color reaction. With the increase of Re at inlet, separation flow, steady engulfment flow, unsteady engulfment flow and unsteady symmetric flow displayed successively in the reactor. In particularly, characteristics of the interfacial reaction in T-jet reactor at different flow modes were investigated. The mixing effect, product concentration distribution and time evolution were analyzed combined with the flow field structure. The influence of complex flow field on mixing and interfacial reaction was revealed. The results showed that the three-dimensional vortex structure of engulfment flow makes the fluid entrains with each other, and the layered fluid interface is formed by folding and stretching, which greatly increases the interface contact area of reactants, and improves the mixing and reaction degree significantly. And the product concentration is high and distributed uniformly. |
| |
| Keywords: | T-jet reactor planar laser induced fluorescence flow mixing interfacial reaction |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《化工学报》浏览原始摘要信息 |
|
点击此处可从《化工学报》下载免费的PDF全文 |
|
