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甲烷+氨水体系水合物生成条件实验测定及计算 预览 被引量:2

Experimental determination and calculation of methane hydrate formation in presence of ammonia
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摘要 甲烷在氨水体系中生成水合物的实验数据对于开发水合法回收合成氨驰放气工艺以及操作条件的确定具有重要意义。本文测定了氨摩尔分数为1.018、3.171、5.278氨水溶液中甲烷气体水合物的生成条件。结果表明:氨的加入对甲烷水合物的生成起着明显抑制作用,而且随着氨浓度的增加,生成压力越高。采用Chen—Guo模型对甲烷在氨水中生成水合物的数据进行了计算,得到了较为满意的计算结果,平均误差为2.71%,说明Chen—Guo模型能够较好地预测该类体系的水合物的生成条件。 Formation condition data for methane hydrate in ammonia-water system is very important for the process development and determination of operation condition for recycling the vent gas of ammonia synthesis using the hydrate method. This paper focuses on the formation conditions of methane hydrate in the presence of ammonia. Equilibrium data of methane hydrate in the temperature, pressure and concentration ranges from 277-281 K, 4-8 MPa, 1.018%, 3. 171% and 5.278% (mole) ammonia, were obtained. The experimental results indicated that ammonia had an inhibitive effect on hydrate formation. The higher the concentration of ammonia, the higher the formation pressure for methane hydrate. The Chen-Guo hydrate model was extended to this methane hydrate system containing ammonia in water. It was shown that the model could be used to predict the formation pressure for methane hydrate.
作者 王蕾艳 刘爱贤 郭绪强 陈光进 刘祺凤 WANG Leiyan, LIU Aixian, GUO Xuqiang, CHEN Guangjin, LIU Qifeng (State Key Laboratory of Heavy Oil Processing , China University of Petroleum , Beijing 102249 , China)
出处 《化工学报》 EI CAS CSCD 北大核心 2008年第2期 276-280,共5页 Journal of Chemical Industry and Engineering(China)
基金 国家自然科学基金项目(20476058,20490207,20676146).
关键词 甲烷水合物 热力学模型 测定 CH4 hydrate thermodynamic model ammonia measurement
作者简介 王蕾艳(1982),女,硕士研究生。 联系人:郭绪强。
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参考文献15

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同被引文献20

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