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Experimental study and kinetic modeling on THF hydrate formation under a static electric field
Gas Science and Engineering Pub Date : 2021-07-28 , DOI: 10.1016/j.jngse.2021.104162
Sima Hejazi 1 , Hassan Pahlavanzadeh 1 , Mehrdad Manteghian 1
Affiliation  

Hydrate formation has drawn wide-ranging research attention because of its applications in natural gas storage and transportation, refrigeration technology, seawater desalination, gas separation, capturing greenhouse gases, and energy storage. Also, THF hydrate has been widely investigated in terms of its kinetics, thermophysical properties, and suitability as a replacement for CH4 hydrates in experimental studies. In this work, the kinetics of THF hydrate formation under the impact of an electric field is studied by performing a chemical affinity model. Hence, the effect of an electric field on the chemical affinity model variations involving nucleation temperature and time duration to attain equilibrium needs to be studied from the model point of view. Then, the chemical affinity model under the effect of an electric field is performed for three THF-H2O systems involving solutions containing 10 wt% THF, 19 wt% THF, and 30 wt% THF, and one THF–H2O–SDS system containing 19 wt% THF and 100 ppm SDS. Based on the results, imposing an electric field with a strength of 4.3 × 105 V/m for the mentioned systems causes the nucleation temperature and the hydration reaction time to reach equilibrium to increase. Herein the change in THF consumption versus time in the process of formation and growth of THF hydrate is analyzed by using the chemical affinity model.



中文翻译:

静电场下THF水合物形成的实验研究和动力学模拟

水合物的形成因其在天然气储运、制冷技术、海水淡化、气体分离、捕获温室气体和能源储存等方面的应用而受到广泛的研究关注。此外,THF 水合物在其动力学、热物理性质和作为 CH 4替代品的适用性方面已得到广泛研究实验研究中的水合物。在这项工作中,通过执行化学亲和模型研究了电场作用下 THF 水合物形成的动力学。因此,需要从模型的角度研究电场对化学亲和力模型变化的影响,包括成核温度和达到平衡的持续时间。然后,对三个 THF-H 2 O 系统进行电场作用下的化学亲和模型,该系统涉及含有 10 wt% THF、19 wt% THF 和 30 wt% THF 以及一个 THF–H 2 O– 的溶液。包含 19 wt% THF 和 100 ppm SDS 的 SDS 系统。根据结果​​,施加强度为 4.3 × 10 5的电场 上述系统的 V/m 导致成核温度和水合反应达到平衡的时间增加。本文利用化学亲和模型分析了THF水合物形成和生长过程中THF消耗量随时间的变化。

更新日期:2021-08-04
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