Fibrous Coalescer for the Treatment of Hydrometallurgical Oil Dispersions
Fibrous Coalescer for the Treatment of Hydrometallurgical Oil Dispersions
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用于湿法冶金油分散体处理的纤维聚结器
DOI：
10.1021/acs.iecr.6b03160
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发表时间：
2016-11-16
影响因子：
4.2
通讯作者：
Yang, Chuanfang
中科院分区：
文献类型：
--
作者：
Hu, Dan;Li, Lei;Yang, Chuanfang
采用自行研制的纤维介质，研究了不同湿法冶金萃取剂和溶剂的油分散体的聚结分离，对6种常用萃取剂中的4种作为小油滴悬浮在水中表现出良好的分离效果。油水界面张力和密度差对分离的影响较大。以煤油为模型油，在平板实验台上进行了分离实验，考察了介质厚度、进油浓度、介质面速度等因素对分离效果的影响。介质厚度越大，分离效果越好，相应的压降也越大。入油浓度和介质面速度是影响分离效率的相互制约因素。当油浓度较低时，时间加权平均分离效率保持不变或随速度增大；当它处于高位时，相反的趋势盛行。
Coalescence separation of oil dispersions of various hydrometallurgical extractants and solvents was studied using in-house-developed fibrous media that showed good separation performance toward four out of six common extraction reagents suspended in water as small oil droplets. The separation was affected by oil/water interfacial tension and their density difference. Further, using kerosene as the model oil, the separation was performed on a flatsheet bench to investigate the effect of other factors including the media thickness, influent oil concentration, and media face velocity. Media with larger thickness resulted in better separation and, correspondingly, higher pressure drop. The influent oil concentration and media face velocity were mutual constraints to the separation efficiency. When the oil concentration was low, the time-weighted average separation efficiency stayed the same or increased with the velocity; when it was high, the opposite trend prevailed.