| 天然气水合物生成动力学机理的研究 |
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| 引用本文： | 陈孝彦,何小社,何晓霞,王胜杰,刘芙蓉. 天然气水合物生成动力学机理的研究[J]. 西安交通大学学报, 2004, 38(1): 85-88 |
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| 作者姓名： | 陈孝彦 何小社 何晓霞 王胜杰 刘芙蓉 |
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| 作者单位： | 西安交通大学环境与化学工程学院,710049,西安 |
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| 基金项目： | 国家自然科学基金资助项目(40272064). |
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| 摘 要： | 对天然气的气一水体系进行了研究，提出了一种新的天然气水合物生成机理，认为水合物晶核的生长经历了溶解、水合物骨架形成、扩散和吸附4个阶段，很好地解释了水合物组成的不确定性．据此机理对水合物在成核以后生成的动力学方程进行了推导，引入了有效面积分率、压力指数、过冷度校正参数等，得到了气-水体系水合物生成的改进的动力学方程．用遗传算法对方程中的参数进行拟合的结果表明，由方程计算所得的水合物生成速率与实验结果的最大误差为15．9％，最小误差为1．6％，平均误差为9．6%，说明拟合结果准确。
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| 关 键 词： | 天然气水合物 生成机理 动力学 吸附 |
| 文章编号： | 0253-987X(2004)01-0085-04 |
| 修稿时间： | 2003-07-02 |
Study on Kinetics of Natural Gas Hydrate Formation |
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| Chen Xiaoyan,He Xiaoshe,He Xiaoxia,Wang Shengjie,Liu Furong. Study on Kinetics of Natural Gas Hydrate Formation[J]. Journal of Xi'an Jiaotong University, 2004, 38(1): 85-88 |
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| Authors: | Chen Xiaoyan He Xiaoshe He Xiaoxia Wang Shengjie Liu Furong |
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| Abstract: | The adsorption mechanism is introduced into the study of the natural gas-hydrate in gas-water system, and a formation mechanism of gas-hydrate is proposed. It is considered that the nuclei growing up undergoes four steps: resolving, forming of gas-hydrate framework,diffusing and adsorption,which explains the uncertainty of gas-hydrate composing appropriately. Based on this mechanism, the kinetics equation of gas-hydrate formation after nucleation is deduced, and area weight coefficient, pressure index and correction coefficient of super cooling degree are introduced into the deducing process. A comparision between the calculated and experimental data indicates that the average deviation is 9.6%, the maximum and the minimum deviations approach 15.9% and 1.6% respectively. |
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| Keywords: | natural gas hydrate formation mechanism kinetics adsorption |
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