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Study on Temperature Characteristics of Hydrate Slurry during Cyclopentane–Methane Hydrate Formation
Energy & Fuels ( IF 5.2 ) Pub Date : 2018-01-24 00:00:00 , DOI: 10.1021/acs.energyfuels.7b03655
Jing Cai 1 , Ya-Fei Hu 2 , Yu Zhang , Chun-Gang Xu , Zhao-Yang Chen , Qiu-Nan Lv , Xiao-Sen Li
Affiliation  

In this work, the temperature characteristics of hydrate slurry related to transition heat in the cyclopentane (CP)/methane (CH4) hydrate formation process were systematically investigated. A crystallizer with a special heat-insulating layer of aerogel was designed to hold the transition heat, and the hydrate slurry could be heated in the crystallizer. Temperatures were measured in the process of the hydrate formation under the conditions of different operating pressures, volumes of solution, methods of gas injection, and volume ratios of CP to water. The highest temperature of hydrate slurry (Th) and the maximum temperature difference (ΔTmax) relative to the initial temperature were adopted to evaluate the influence of different conditions. The experimental results indicated that the hydrate formation interface and thermal interface obviously move from the initial gas/CP interface and CP/water interface toward the bulk solution. Both the increase of operating pressure and the decrease of solution volume have positive effect on enhancing the hydrate slurry temperature. In addition, the volume ratio of CP to water also significantly affects the fluctuation of the hydrate slurry temperature. The hydrate slurry could be heated up to 294.45 K and the ΔTmax of 16.30 K could be obtained, and such high heat could be effectively collected and used elsewhere.

中文翻译:

环戊烷-甲烷水合物形成过程中水合物浆液温度特性的研究

在这项工作中,系统地研究了与环戊烷(CP)/甲烷(CH 4)水合物形成过程中的过渡热有关的水合物浆料的温度特性。设计具有特殊的气凝胶绝热层的结晶器以保持过渡热,并且可以在结晶器中加热水合物浆料。在不同操作压力,溶液体积,注气方法和CP与水的体积比的条件下,在水合物形成过程中测量温度。水合物浆液的最高温度(T h)和最大温差(ΔT max))相对于初始温度被用来评估不同条件的影响。实验结果表明,水合物形成界面和热界面明显地从初始的气/ CP界面和CP /水界面移向本体溶液。操作压力的增加和溶液体积的减少均对提高水合物浆液温度具有积极作用。另外,CP与水的体积比也显着影响水合物浆料温度的波动。可以将水合物浆料加热到294.45 K ,并获得16.30 K的ΔT max,这样的高热量可以有效地收集起来并在其他地方使用。
更新日期:2018-01-24
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