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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CH_4,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(CH_4+N_2)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(CH_4+N_2+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,(CH_4+N_2)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。
The separation of CH 4 in the mixed CBM can be effectively purified by the hydrate separation method in tetrahydrofuran (THF) solution, which is good for protecting the environment and improving the resource utilization efficiency. THF can significantly reduce the gas hydrate formation pressure, and the hydrate separation (CH 4 + N 2) experiment can be realized under lower pressure, which helps to reduce the equipment manufacturing cost and save the production cost. The kinetics of hydrate formation in (CH 4 + N 2 + THF) system has been studied experimentally, and the effect of reaction temperature, pressure and gas-liquid ratio on hydrate formation rate has been investigated. The application of popularization and application of data to provide the basis to promote the separation process of industrialization. The experimental results show that the formation rate of (CH 4 + N 2) hydrate is inversely proportional to the reaction temperature and is proportional to the reaction pressure and gas-liquid ratio.