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探讨了我国天然气采用乙醇胺脱硫和脱 Ｃ Ｏ２ 的方法以及天然气在不同压力下的液化方案， 并对采用丙烷、乙烯、甲烷复叠制冷由４０ Ｍ Ｐａ 天然气生产 Ｌ Ｎ Ｇ的方法进行了详细描述和经济效益分析， 得出 Ｌ Ｎ Ｇ无论用于双燃料汽车或民用燃料均可获得较好的经济效益。
The methods of desalting ethanolamine desulphurization and de-C O2 of natural gas in China and the liquefaction scheme of natural gas under different pressures are discussed. The method of producing L N G from natural gas of 4 0 M Pa by propane, ethylene and methane cascade refrigeration is discussed in detail Description and economic benefit analysis, it is concluded that L N G can achieve good economic benefits whether it is used in bi-fuel vehicles or civil fuels.