收稿日期: 1900-01-01
修回日期: 1900-01-01
网络出版日期: 2006-12-10
Decomposition of Methane hydrate
李娜,奚西峰,何小霞, 樊英杰, 刘芙蓉 . 甲烷水合物分解动力学模型[J]. 天然气地球科学, 2006 , 17(6) : 880 -883 . DOI: 10.11764/j.issn.1672-1926.2006.06.880
Taking methane hydrate decomposition as a particle shrinking process, this paper has built a dynamic model for methane hydrate decomposition under the conditions of decompression and uniform temperature by macroscopical gas-solid reaction dynamic methods,and has deduced an decomposition rate equation. Experimental data and their dynamic analysis indicated that decomposition rate was controlled by pervasion process of gas in the ice layer below zero centigrade temperature. By comparing effective diffusion coefficients of methane in ice layer between the calculated one by our model and experimental data aiming to verification of the model, it was shown that results from the model matched experimental data perfectly, which means the high reliability of the model.
Key words: Methane hydrate; Dynamics; Decomposition.
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