期刊
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
卷 108, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jngse.2022.104837
关键词
Natural gas hydrate; CO2 replacement; Kinetics process; Replacement mechanism; Small molecule gas
资金
- National Natural Science Foundation of China [51906093]
- Open Fund of Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development [E239kf1201]
- Open Fund of Natural Gas Hydrate Key Laboratory, Chinese Academy of Sciences [Y907ke1001]
- Hongliu Excellent Young Talents Support Program of Lanzhou University of Technology [Q2018]
This paper provides a comprehensive overview of the research progress in the kinetics of CH4 recovery from NGH using CO2 replacement, especially with CO2-containing mixed gas. It deeply analyzes the promoting effect of small molecule gases such as H2 and N2 on the replacement process of CO2-CH4 hydrate and its internal mechanism. Furthermore, it discusses the existing problems and future development directions of the CH4 recovery from NGH using CO2-containing gas mixture.
A clear understanding of the replacement characteristics and kinetic mechanism of CO2-CH4 hydrate has great significance for natural gas hydrate (NGH) exploitation. This paper presents a comprehensive overview on the research progress of kinetics on CH4 recovery from NGH by CO2 replacement, especially with CO2-containing mixed gas. The promoting effect of small molecule gas such as H2 and N2 on the replacement process of CO2-CH4 hydrate and its internal mechanism are deeply analyzed. Furthermore, based on the current conclusions ob-tained, the existing problems and future development directions of the CH4 recovery from NGH by CO2-con-taining gas mixture are pointed out.
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