| 高含盐废水降膜蒸发过程中液膜破裂的抑制 |
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| 引用本文： | 赵贤广,李武,张志炳,徐炎华.高含盐废水降膜蒸发过程中液膜破裂的抑制[J].环境工程学报,2011,5(4):726-730. |
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| 作者姓名： | 赵贤广 李武 张志炳 徐炎华 |
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| 作者单位： | 1. 南京工业大学环境学院,南京,210009
2. 南京大学化学化工学院,南京,210093 |
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| 基金项目： | 国家“985工程”资助；国家自然科学基金项目（20576050） |
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| 摘 要： | 为解决高含盐废水降膜蒸发过程中液膜破裂产生的干区和结垢问题,采用高灵敏度的红外热成像仪实验研究了高含盐废水受热降膜破裂后的流动状态.结果表明,破裂降膜径向存在热Marangoni效应和溶质Marangoni效应.热Marangoni效应引起了液膜由侧而边缘向中心主流区的收缩,形成稳定的干区;而溶质Marangoni效应...
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| 关 键 词： | 盐 废水 降膜蒸发 Marangoni效应 表面活性剂 |
Suppression of liquid film rupture during falling film evaporation for high salinity wastewater |
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| Zhao Xianguang,Li Wu,Zhang Zhibing and Xu Yanhua.Suppression of liquid film rupture during falling film evaporation for high salinity wastewater[J].Techniques and Equipment for Environmental Pollution Control,2011,5(4):726-730. |
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| Authors: | Zhao Xianguang Li Wu Zhang Zhibing and Xu Yanhua |
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| Institution: | College of Environment, Nanjing University of Technology, Nanjing 210009, China,College of Environment, Nanjing University of Technology, Nanjing 210009, China,School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China and College of Environment, Nanjing University of Technology, Nanjing 210009, China |
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| Abstract: | To avoid the appearance of dry region and scaling caused by liquid film rupture during the falling film evaporation for high salinity wastewater,an experimental investigation was performed on the liquid film flow after heated falling film breaking by using a sensitive infrared camera technique.The results indicate that the thermal Marangoni effect and solutal Marangoni effect co-exit in transverse direction on the broken falling film surface.The thermal Marangoni effect induced the falling film shrinking fr... |
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| Keywords: | salinity wastewater falling film evaporation Marangoni effect surfactant |
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