甲烷水合物在AlCl<sub>3</sub>溶液中的相平衡条件

郑艳红; 雷怀彦; 王峰; 吴保祥

甲烷水合物在AlCl₃溶液中的相平衡条件

1 中国科学院兰州地质研究所,气体地球化学国家重点实验室,兰州,730000;
2 石油大学,北京昌平,102249

基金项目: 国家自然科学基金项目(批准号:49973024),气体地球化学国家重点实验室基金项目(SJJ-01-02),中科院广州能源所水合物研究中心资助

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作者简介:
郑艳红,女, 1976年出生,硕士,地球化学

中图分类号: TE122.1⁺1

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Phase Equilibrium of Methane Hydrates in the Presence of AlCl₃

1 State Key Laboratory of Gas Geochemistry, Lanzhou Institute of Geology, Chinese Academy Sciences, Lanzhou,730000;
2 University of Petroleum, Beijing,102249

摘要

摘要: 利用可视法测定了甲烷水合物在AlCl₃溶液中的三相平衡(甲烷水合物-AlCl₃液相-甲烷气相)条件.AlCl₃溶液中甲烷水合物的生成压力为4.040～8.382 MPa,温度为272.15～278.15 MPa.对相同摩尔浓度的AlCl₃和KCl溶液中甲烷水合物生成条件的抑制作用进行了讨论.并将实验结果与前人的研究数据进行了对比,通过统计分析得到一计算甲烷水合物相平衡压力与温度的经验公式,经计算所得结果与实验数据一致.研究认为AlCl₃溶液可以作为一种良好的抑制剂用于油气工业的输送管道中。
- 甲烷水合物 /
- AlCl₃溶液 /
- 相平衡
Abstract: Methane hydrates are nonstoichiometric crystalline compounds. They are formed by Water molecules that are linked together With hydrogen bonds and f or ma three -dimensional structure With cavities. The cavities can be occupied by certain molecules of methane gases. One cavity can accommodate only one molecule. These molecules should not interfere With the hydrogen bonds among the Water molecules，and they should have molecular diameters that are smaller than the diameter of the cavity. Methane hydrates play an important role in the exploitation，transportation,and processing of natural gas. There is a risk of hydrate formation at all the stages of natural gas handling due to the operating conditions of pressure and temperature that favor hydrate formation. We mainly discussed the equilibrium conditions of methane hydrates in this paper. The three- phase(H- LW- V）equilibrium of the methane hydrate experiment system in aqueous solutions containing AlCl ₃ Was experimentally measured at pressures ranging from 4. 040 to 8. 382 MPa and at temperatures between 272. 15 and 278. 15K using the isothermal pressure search method. The addition of AlCl ₃ exhibited a stronger inhibition effect as that observed f or other electrolytes(KCl)With the same concentration and discussed the reason. An empirical exponential equation is proposed to Well correlate the measured data for aqueous solution. The computed values matched the experimental data obtained in this Work very Well. At last,the aqueous solutions containing AlCl₃ is a better inhibitor for oil gas pipeline in the oil-gas industry.
- methane hydrates /
- AlCl₃solutions /
- phase equilibrium

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参考文献(24)

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甲烷水合物在AlCl₃溶液中的相平衡条件

作者简介:
郑艳红,女, 1976年出生,硕士,地球化学

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Phase Equilibrium of Methane Hydrates in the Presence of AlCl₃

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甲烷水合物在AlCl₃溶液中的相平衡条件

1 中国科学院兰州地质研究所,气体地球化学国家重点实验室,兰州,730000;

2 石油大学,北京昌平,102249

作者简介:
郑艳红,女, 1976年出生,硕士,地球化学

English Abstract

Phase Equilibrium of Methane Hydrates in the Presence of AlCl₃

1 State Key Laboratory of Gas Geochemistry, Lanzhou Institute of Geology, Chinese Academy Sciences, Lanzhou,730000;

2 University of Petroleum, Beijing,102249

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甲烷水合物在AlCl3溶液中的相平衡条件

作者简介: 郑艳红,女, 1976年出生,硕士,地球化学

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Phase Equilibrium of Methane Hydrates in the Presence of AlCl3

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出版历程

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甲烷水合物在AlCl3溶液中的相平衡条件

1 中国科学院兰州地质研究所,气体地球化学国家重点实验室,兰州,730000; 2 石油大学,北京昌平,102249

作者简介: 郑艳红,女, 1976年出生,硕士,地球化学

English Abstract

Phase Equilibrium of Methane Hydrates in the Presence of AlCl3

1 State Key Laboratory of Gas Geochemistry, Lanzhou Institute of Geology, Chinese Academy Sciences, Lanzhou,730000; 2 University of Petroleum, Beijing,102249

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甲烷水合物在AlCl₃溶液中的相平衡条件

作者简介:
郑艳红,女, 1976年出生,硕士,地球化学

Phase Equilibrium of Methane Hydrates in the Presence of AlCl₃

甲烷水合物在AlCl₃溶液中的相平衡条件

1 中国科学院兰州地质研究所,气体地球化学国家重点实验室,兰州,730000;

2 石油大学,北京昌平,102249

作者简介:
郑艳红,女, 1976年出生,硕士,地球化学

Phase Equilibrium of Methane Hydrates in the Presence of AlCl₃

1 State Key Laboratory of Gas Geochemistry, Lanzhou Institute of Geology, Chinese Academy Sciences, Lanzhou,730000;

2 University of Petroleum, Beijing,102249