IMECH-IR  > 水动力学与海洋工程重点实验室(2009-2011)
Alternative TitleStability condition of CO2 hydrate in silts
颜荣涛; 魏厚振; 吴二林; 鲁晓兵; 韦昌富
Source Publication化工学报
Abstract测定纯CO2水合物和干密度为1.40、1.50、1.65g·cm-3粉土中CO2水合物的稳定性条件。通过实验数据的对比分析,表明了粉土孔隙效应对CO2水合物稳定性条件具有重要影响,较于纯水合物,粉土中水合物稳定性压力更高、温度更低。另外,比较了不同初始分解温度下1.50 g·cm-3粉土中CO2水合物的稳定性条件,证明了水合物初始分解温度会对沉积物中水合物的稳定性条件测定产生影响。最后,基于修正的van der Waals-Platteeuw热力学模型对干密度为1.65 g·cm-3粉土中CO2水合物稳定性条件进行分析,发现毛细效应对水合物稳定性条件的影响程度不是恒定的,随着水合物的分解,孔隙毛细效应逐步减弱,对水合物的稳定性条件影响逐渐减小。
Other AbstractEvaluation of stability condition is an important issue in the study of gas hydrate.In this study,the stability conditions for the bulk CO2 hydrate and the CO2 hydrate in silts with dry densities 1.40 g·cm-3,1.50 g·cm-3 and 1.65 g·cm-3,respectively,are measured and compared.It is shown that the pore effect of silts affects the stability of CO2 hydrate.Compared with the bulk hydrate,the hydrate in the silts has higher equilibrium pressure and lower equilibrium temperature.In addition,the initial dissociation temperature of pore hydrate may affect the stability of hydrate in the silts.Based on the modified van der Waals-Platteeuw model,the stability conditions of gas hydrate in the silt with density 1.65 g·cm-3 are analyzed.It is found that the effect of capillarity on the stability varies.As the hydrate in the silt dissociates,the capillary effect diminishes. 更多
Keyword粉土 Co2水合物 毛细效应 稳定性条件
Subject Area力学
Indexed ByCSCD
Funding Organization中科院“百人计划”择优支持项目;中国科学院知识创新工程重要方向项目(KZCX2-YW-JS108);岩土力学与工程国家重点实验室开放基金项目(Z000801);国家科技重大专项课题(2008ZX05026-004-10)~~
Citation statistics
Cited Times:1[CSCD]   [CSCD Record]
Document Type期刊论文
Corresponding Author颜荣涛
Recommended Citation
GB/T 7714
颜荣涛,魏厚振,吴二林,等. 粉土中CO_2水合物的稳定性条件[J]. 化工学报,2011,62(4):889-894.
APA 颜荣涛,魏厚振,吴二林,鲁晓兵,&韦昌富.(2011).粉土中CO_2水合物的稳定性条件.化工学报,62(4),889-894.
MLA 颜荣涛,et al."粉土中CO_2水合物的稳定性条件".化工学报 62.4(2011):889-894.
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