天然气水合物分解动力学研究进展

郁桂刚; 欧文佳; 吴翔; 宁伏龙; 张凌

doi:10.19509/j.cnki.dzkq.tb20210668

天然气水合物分解动力学研究进展

doi: 10.19509/j.cnki.dzkq.tb20210668

郁桂刚^a,,
欧文佳^{a, b, ,},
吴翔^a,
宁伏龙^{a, b},
张凌^a

a.
中国地质大学(武汉)工程学院，武汉 430074
b.
中国地质大学(武汉)地球深部钻探与深地资源开发国际联合研究中心，武汉 430074

基金项目:

国家自然科学基金项目 51704266

国家自然科学基金项目 51874263

国家重点研发计划 2018YFE0126400

详细信息

作者简介:
郁桂刚(1996—)，男，现正攻读地质工程专业硕士学位，主要从事天然气水合物勘探开发的研究工作。E-mail：2585707175@qq.com

通讯作者:
欧文佳(1985—)，女，副研究员，主要从事天然气水合物勘探开发方面的研究工作。E-mail：ouwj@cug.edu.cn

中图分类号: P618.130.1
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- 文章访问数: 1247
- PDF下载量: 109
- 被引次数: 0
出版历程
- 收稿日期: 2021-12-28

Research advances on the dissociation dynamics of natural gas hydrates

Yu Guigang^a
,,
Ou Wenjia^{a, b
, ,},
Wu Xiang^a,
Ning Fulong^{a, b},
Zhang Ling^a

a.
Faculty of Engineering, China University of Geosciences(Wuhan), Wuhan 430074, China
b.
National Center for International Research on Deep Earth Drilling and Resource Development, China University of Geosciences(Wuhan), Wuhan 430074, China

摘要

摘要:
天然气水合物是具有巨大开发潜力的清洁能源，但由于开采技术、经济性和环境效应等问题尚未达到商业化开发水准。近年来人们也在探索水合物技术在二氧化碳封存、海水淡化、储能、气体分离等领域中的应用。其中最具挑战性和关键性的问题就是水合物如何随时间形成和分解。概况了水合物分解动力学基础研究，包括水合物分解特性、分解影响因素和分解机理；综述了水合物分解动力学模型研究进展，根据水合物分解控制机制，将现有模型归为4类：热分解模型、本征动力学模型、传质分解模型和综合模型，重点阐述了它们的假设条件、主要认识和局限性，并展望了未来水合物分解动力学研究的改进方向，以期能够加深对水合物分解动力学的理解，促进水合物的开发和利用。
- 气体水合物 /
- 分解特性 /
- 分解机制 /
- 分解动力学模型
Abstract:
Natural gas hydrate is a kind of clean energy with great development potential but is still not commercially developed due to the bottlenecks such as exploitation technology, economical efficiency, and environmental effects.In recent years, people have explored the application of hydrate technology in the field of CO₂ capture, seawater desalination, energy storage, gas separation, etc. One of the most challenging and critical problems is how the hydrates are formed and decomposed at any time. This paper summarizes the fundamental research on hydrate decomposition dynamics, including hydrate decomposition properties, influencing factors, and dissociation mechanisms. Moreover, the paper reviews the development of hydrate dissociation dynamics models. The existing models are divided into four categories according to dissociation mechanisms: Thermal dissociation models, intrinsic dynamics models, mass transfer dissociation models and integrated models, and their assumptions, main understanding and limitations are highlighted. Future directions for improving hydrate dissociation dynamics research are foreseen to deepen the understanding of hydrate dissociation dynamics and promote the development and utilization of hydrates.
- gas hydrate /
- dissociation properties /
- dissociation mechanisms /
- dissociation dynamics models

HTML全文

图 1 不同开采方法下水合物形成/分解示意图(改自文献[17])

L.液相；H.水合物；V.气相；L_w-H-V_CO₂.液相、水合物相以及气相CO₂共存, 其他以此类推

Figure 1. Schematic diagram of natural gas hydrate formation and dissociation at the molecular scale using different mining methods

下载: 全尺寸图片幻灯片

图 2 水合物分解机理示意图(引自文献[78])

Figure 2. Schematic of mechanism for hydrate decomposition

下载: 全尺寸图片幻灯片

图 3 分子尺度上气体水合物固-液界面横截面的简化示意图(修改自文献[63])

Figure 3. Simplified schematic map of the cross section of a gas hydrate solid-fluid interface on a molecular scale

下载: 全尺寸图片幻灯片

图 4 具有有效传热的混合气-水系统中水合物分解的概念模型^[72]

Figure 4. Conceptual model for hydrate dissociation in a mixing gas-water system with effective heat transfer

下载: 全尺寸图片幻灯片

图 5 微观水平水合物三步分解机理的概念模型^[72]

a. 解吸步骤; b.塌陷步骤; c.扩散步骤

Figure 5. Conceptual model for the three-step hydrate dissociation mechanism at microscopic level

下载: 全尺寸图片幻灯片

表 1 经典水合物分解动力学模型总结(改自文献[74])

Table 1. Summary of classic hydrate dissociation dynamics models

模型作者	模型特点	传热		传质		本征动力学	多孔介质	资料来源
模型作者	模型特点	传导	对流	气	水	本征动力学	多孔介质	资料来源
Selim等	热刺激水合物分解时间函数	√	√	√	—	—	—	文献[61]
Kim等	本征动力学	—	—	—	—	√	—	文献[29]
Jamaluddin等	传热、本征动力学	√	—	—	—	√	—	文献[31]
Yousif等	多孔介质中三相一维模型	—	—	√	√	√	√	文献[64]
Tsypkin	考虑冰层区域	√	√	√	√	—	—	文献[65]
Makogon	分解前缘的运动决定分解	—	√	√	—	—	√	文献[66]
Clarke等	在线粒度分析	—	—	—	—	√	—	文献[67]
Goel等	传质、本征动力学	—	—	√	—	√	√	文献[68]
Hong等	多孔介质中传热、本征动力学	√	√	—	—	√	√	文献[57]
Sun等	冰层厚度、冰-水合物界面的移动	—	—	√	—	—	—	文献[69]
李娜等	界面化学反应、边界层传质和冰层扩散	—	—	√	—	—	—	文献[70]
Windmeier等	考虑水合物溶解和分解	—	—	—	—	√	—	文献[63]
Vlasov	冰层多孔结构、本征动力学	—	—	√	—	√	√	文献[71]
Song等	分子化学势为驱动力、本征动力学、传质	—	—	√	√	√	—	文献[72]
Deng等	本征动力学、两相流、传热	√	—	√	√	√	√	文献[73]

下载: 导出CSV

表 2 水合物分解本征动力学参数

Table 2. Intrinsic dynamics parameters hydrate

气体	K_d⁰/(mol·m^-2·Pa^-1·s^-1)	活化能/(kJ·mol^-1)	资料来源
CH₄	1.24×10⁵	78.30	文献[29]
CH₄	3.6×10⁴	81.00	文献[71]
CH₄(结构Ⅱ)	8.06×10³	77.33	文献[80]
C₂H₆	2.56×10⁸	104.00	文献[67]
CO₂	1.83×10⁸	102.88	文献[81]
CH₄	1.7×10⁴	78.15	文献[56]

下载: 导出CSV

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