刘丽艳¹, 侯立飞¹, 谭蔚¹, 朱国瑞¹, 唐国武²
AuthorsHTML:刘丽艳¹, 侯立飞¹, 谭蔚¹, 朱国瑞¹, 唐国武²
AuthorsListE:Liu Liyan¹, Hou Lifei¹, Tan Wei¹, Zhu Guorui¹, Tang Guowu²
AuthorsHTMLE:Liu Liyan¹, Hou Lifei¹, Tan Wei¹, Zhu Guorui¹, Tang Guowu²
Unit:1. 天津大学化工学院，天津 300350；2. 山东师范大学化学化工与材料学院，济南 250014
Unit_EngLish:1．School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China
2．School of Chemistry and Materials Science, Shandong Normal University, Jinan 250014, China
Abstract_Chinese:采用自行设计的微通道纤维聚结装置和高速摄影系统测试油水乳状液中水滴在纤维丝表面被拦截、聚结和分离的过程．实验发现油水乳状液中水滴的碰撞合并过程存在3类：纤维丝捕获的水滴与油-水乳状液中水滴的合并、被纤维丝捕获的水滴之间的合并、乳状液中水滴间的合并．实验研究了油-水乳状液初始含水量、流动速度对纤维丝聚结器压力降和分离效率的影响．结果表明, 在其他条件相同的情况下, 油-水乳状液初始含水量越低、流动速度越小, 分离效果越好, 实验中流速为1 mm/s、初始含水量为3% 时, 分离效率可达60% ．通过显微镜分析了纤维丝聚结器入口、中间以及出口处纤维床层上的水滴形貌, 发现在聚结器出口处水滴直径最大, 说明脱离纤维丝的水滴可能被再次捕获, 继续发生碰撞聚结．
Abstract_English:The process in which water droplets were intercepted，combined and detached on fibers in water-in-oil emulsion was observed by the self-desighed micro channel for fibers coalescence and high speed photography system. The results show that there were three types of collision in water-in-oil emulsion: two water droplets in emulsion coalescing，water droplet captured by the fiber colliding and coalescing with the water droplet in emulsion，and two water droplets on the surface of the fiber coalescing. The influence of initial water content and flow velocity on the pressure drop and separation efficiency of coalescer filled by hydrophobic fibers was investigated. The results show that the separation efficiency was high when the water content and the flow velocity were low. When the flow velocity was 1 mm/s and the initial water content was 3% ，the separation efficiency was up to 60% . The morphology of the water droplets at the entrance，middle and exit of fibrous bed was analyzed by using microscope，and the largest diameter of water droplets was found at the exit. It indicates that the water droplets leaving the fibers could be captured and collided with other water droplets again.
Keyword_Chinese:疏水纤维; 油-水乳状液; 碰撞聚结; 分离效率
Keywords_English:hydrophobic fiber; water-in-oil emulsion; collision coalescence; separation efficiency

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