煤层气液化技术的进展及安全性分析方法

oal -bed methane is a kind of natural gas of existing in top of coal-bed, because of the impurities like oxygen, the CBM is very dangerous gas. Liquefaction of CBM is very important for the utilization and exploitation of CBM. This article introduces several civil CBM projects, and analyses two processes: Mixed-Refrigerant Cycle (MRC) and Expander-Cycle, also introduces several CBM separation processes: cryogenic distillation, adsorption separation, membrane separation etc, and also introduces two theories which can be used for the security analysis of the liquefaction process of CBM.