【作者】 孙强； 郭绪强；

【Author】 SUN Qiang,GUO Xuqiang(State Key Laboratory of Heavy Oil Processing,China University of Petroleum,Beijing 102249,China)

【机构】 重质油国家重点实验室中国石油大学(北京)；

【摘要】 在四氢呋喃(THF)溶液中利用水合物法分离技术能够有效提纯混空煤层气中的CH4,有利于保护环境及提高资源利用效率。THF能够显著降低气体水合物生成压力,使水合物法分离(CH4+N2)实验能够在较低压力下实现,有助于减少设备制作费用,节约生产成本。通过实验对(CH4+N2+THF)体系的水合物生成动力学进行了相应研究,考察了反应温度、压力、气液比对水合物生成速率的影响,为水合物法分离混空煤层气技术的推广应用提供数据基础,以推进该分离技术的工业化进程。实验结果证明,(CH4+N2)水合物生成速率与反应温度成反比,与反应压力及气液比成正比。更多还原

【Abstract】 CH4could be effectively separated and concentrated from air-mixed coal-bed gas by hydrate formation in tetrahydrofuran(THF)solution.It is beneficial to protect air environment and increase the usage efficiency of resource.THF is able to significantly reduce the formation pressure of gas hydrate.It realizes the separation of(CH4 + N2)via hydrate formation at relatively low pressure,which reduces the fabrication expenses of experimental equipments and the cost of separation.Consequently,the experiments on the formation kinetics of(CH4+N2+ THF)hydrate was studied,and the influences of reaction temperature,pressure and gas-liquid ratio on the hydration reaction velocity were investigated.In a way,basic data was supplied for the separation of air-mixed coal-bed gas by hydrate formation so as to impel the industrial application of the separation technology.The results show that the hydrate formation velocity is inversely proportional to temperature and proportional to pressure and gas-liquid ratio.更多还原