期刊
FUEL
卷 284, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.fuel.2020.119020
关键词
Methane hydrate; Fluidization; Thermodynamics; Decomposition
资金
- National Natural Science Foundation of China [51822603]
- National Key Research and Development Plan of China [2017YFC0307303, 2016YFC0304001]
- Fok Ying-Tong Education Foundation for Young Teachers in the Higher Education Institutions of China [161050]
- Liao Ning Revitalization Talents Program [XLYC1907096]
- Support Plan for Innovative Talents in Liaoning Higher Education Institution [LCR2018073]
- Innovation Foundation of Science and Technology of Dalian [2019J11CY012]
The solid fluidization exploitation method is a new approach for extracting marine methane hydrate, with thermodynamic stability and methane leakage being key factors. The study found that the process can be divided into pressure control, concentration control, and equilibrium control stages, and that the filling rate of the methane hydrate structure affects stability and decomposition. The study also showed that the fluidization rate affects decomposition and methane leakage, with higher temperatures leading to increased methane leakage.
The solid fluidization exploitation method is a new type of marine methane hydrate exploitation method. The thermodynamic stability and methane leakage are two important characteristics for evaluating solid fluidization exploitation method. In this study, the solid fluidization exploitation process was technically achieved by water injection under constant pressure. It was found that the solid fluidization process of methane hydrate can be simply divided into three stages of pressure control, concentration control and equilibrium control. The filling rate of methane hydrate cage structure affected the stability of methane hydrate, which in turn affected the decomposition of methane hydrate during methane hydrate fluidization process. In this study, with the increase of methane hydrate in the reactor, the amount of hydrate decomposition in the reactor decreased. The fluidization rate affected the time for methane concentration to reach equilibrium. For every 10 ml/min increase in fluidization rate, the amount of hydrate decomposition doubled. The amount of methane leakage during the solid fluidization process of methane hydrate was very small, and increased with the temperature of the fluidized water. When the fluidization temperature increases by 7 K, the amount of methane leakage in the hydrate containing 1 L of methane increased by about 0.28 L. This study is of great significance to the application of solid fluidization exploitation method.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据