一、概述天然气是一种以甲烷为主的可燃气体。它的组成除CH_4外,尚有少量C_2至C_5的烷烃、H_2S、CO_2、N_2以及微量的H_e、H_2O等。天然气的贮存,早期采用过“埋地管束”方式在压力下贮存。这种贮存方法的贮量有限,所以不经济,已经逐步被低温液化贮存方式所代替。但是这类作法技术简单,设备可采 First, an overview of natural gas is a methane-based combustible gas. Its composition except CH_4, there are a small amount of C_2 to C_5 alkanes, H_2S, CO_2, N_2 and traces of H_e, H_2O and so on. Natural gas storage, early use of “buried pipe ” way under pressure storage. This storage method has a limited storage capacity, so it is not economical and has been gradually replaced by low-temperature liquefaction storage. However, such practices are simple and can be adopted by the equipment