Experimental study on the formation and agglomeration of tetrahydrofuran hydrate under flowing condition
Experimental study on the formation and agglomeration of tetrahydrofuran hydrate under flowing condition
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DOI：
10.1016/j.ijrefrig.2020.06.012
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发表时间：
2020-06
期刊：
影响因子：
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通讯作者：
Wuchang Wang;Shuai Liu;Xiaoyu Wang;Yuxing Li;Guangchun Song;Shupeng Yao
中科院分区：
文献类型：
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作者：
Wuchang Wang;Shuai Liu;Xiaoyu Wang;Yuxing Li;Guangchun Song;Shupeng Yao
水合物颗粒的微观形态和团聚特性对制冷系统的流动保证和传热起着重要的作用。采用搅拌目视反应器研究了四氢呋喃（THF）水合物的生成过程。四氢呋喃水合物的微观形貌可分为单晶型、平板型和团聚型，每种实验条件下均包含这三种类型。但三种形态颗粒所占的比例和平均粒径存在较大差异。THF溶液初始浓度越大，颗粒的平均粒径越大，团块型颗粒的比例越高。随着搅拌速度的增加，团聚型颗粒破碎，单晶型颗粒比例增加。此外，水合物颗粒的团聚与液相中THF的含量有关。通过微观模型分析了四氢呋喃水合物形成和团聚过程中微观形态的演化机制。这些研究结果为水合物技术在制冷系统中的应用提供了理论依据。
The microscopic morphology and agglomerating characteristics of hydrate particles play an important role in the flow assurance as well as heat transfer in refrigeration systems. The formation process of tetrahydrofuran (THF) hydrate was studied by using a visual reactor with stirring. The microscopic morphology of THF hydrate could be divided into single crystal type, flat plate type, and agglomerate type and each experimental condition includes these three types. However, there is a large difference in the proportion of the three morphological particles and the average particle size. The larger the initial concentration of the THF solution, the larger the average size of the particles, and the higher the proportion of agglomerate-type particles. An increase in the stirring speed causes breakup of the agglomerate-type particles, and the proportion of the single crystal-type particles increases. Moreover, the agglomeration of hydrate particles is related to the content of THF in the liquid phase. A microscopic model indicated the evolution mechanism of the microscopic morphology in THF hydrate formation and agglomeration process was presented. These research results provide a theoretical basis for the application of hydrate technology in refrigeration systems.