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二氧化碳水合物形成的动态特征和流动过程中的储参数的时空演变:实验分析和预测建模
Jingru Zhang1, Ke Chen1, Guangjun Gong1
1Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, Dalian, 116024, China.
Journal of environmental management
|July 22, 2025
概括
本研究提出了一种在地质储存过程中二氧化碳 (CO2) 水合物形成的动态预测模型. 该模型准确地预测了水合物和和压力演变,这对于了解二氧化碳储存能力和安全至关重要.
科学领域:
- 地质化学 地质化学
- 储水库工程 储水库工程
- 材料科学 材料科学 材料科学
背景情况:
- 使用水合物形成的二氧化碳 (CO2) 的地质储存提供了高密度和稳定的储存.
- 预测二氧化碳水合物形成动态和储存能力仍然是一个挑战.
- 现有的模型缺乏用于动态二氧化碳水合物行为预测的直接方法.
研究的目的:
- 为 CO2 水合物的动态形成开发一个预测模型.
- 为了预测气体压力和水合物和在流动期间的时空演变.
- 阐明气体流速在水合物核和质量转移中的作用.
主要方法:
- 使用六个核心的实验研究,初始水合物和度各不相同.
- 研究不同气体流速 (0.030.13毫升/秒) 对水合物形成的影响.
- 开发水合物形成的动态预测模型:N (t) =N0·e^ (b) / (t+c)).
主要成果:
- 气体流速表现出双重作用:较高的流速降低了整体形成,但提高了核化动力学.
- 较高的流量减少了40.8%的水合物形成和28%的水转化.
- 随着气体流速的增加,水合物形成的诱导时间减少了71.4%.
- 动态模型的预测值显示出 ±5%的误差.
结论:
- 这项研究为预测动态二氧化碳水合物形成行为提供了关键的理论基础.
- 开发的模型准确地预测了水合物形成和压力和和的时空演变.
- 了解气体流在多孔介质中的作用对于优化二氧化碳的地质储存至关重要.
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