收稿日期: 2005-08-12
修回日期: 2005-10-14
网络出版日期: 2005-12-20
基金资助
国家自然科学基金项目（编号:40272064）资助.
PARTICLE SHRINKING DYNAMIC MODEL FOR METHANE HYDRATE DECOMPOSITION
Received date: 2005-08-12
Revised date: 2005-10-14
Online published: 2005-12-20
何晓霞,余劲松,马应海,张淑萍,刘芙蓉 . 甲烷水合物分解的缩粒动力学模型[J]. 天然气地球科学, 2005 , 16(6) : 818 -821 . DOI: 10.11764/j.issn.1672-1926.2005.06.818
When the temperature is above zero centigrade, methane hydrate decomposition can be regarded as a gas-solid reaction without solid production layer. From crystal dissolution angle, the paper studied on hydrate particle shrinking problem.The paper related particle radius to reaction time with a differential equation and thus built a particle shrinking model of methane hydrate decomposition. Dynamics analysis was done by use of experimental data from the literature, which indicated that interface chemical reaction was the control of the process. Global reaction velocity constant and the activation energy of methane hydrate decomposition. The results from the model match the experimental data perfectly showing that the model is of high reliability.
Key words： Natural gas hydrate; Dynamics; Decomposition; Diffusion.
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