作　　者： ; ; ;

机构地区： 华南理工大学化学与化工学院传热强化与过程节能教育部重点实验室

出　　处： 《现代化工》 2006年第3期50-53,共4页

摘　　要： 为充分利用进口液化天然气(LNG)湿气中的C2+轻烃资源,以流程模拟软件为工具,通过对现有轻烃分离流程的换热网络进行优化设计,开发出了一种LNG冷量利用与轻烃分离相集成的优化工艺流程。此流程轻烃回收率高达95%以上,而且能够将质量分数25%左右的液体甲烷进行低压储存,大大提升了轻烃分离装置的调峰能力;同时通过回收LNG的冷量将分离获得的C2+轻烃液体过冷,使之能够保持低压液相,有利于轻烃的储存、运输和销售。 In order to utilizing C2＋ light hydrocarbons, through optimizing and designing the current heat exchanger networks in the process for the separating of light hydrocarbons, which based on the software of flow stimulation, a new process of integration and optimization for recovering light hydrocarbons from liquefied natural gas （LNG） was put forward. This process has two advantages：（1）the recovery ratio of light hydrocarbons can be more than 95 %, and there is about 25 wt% of methane which could be stored in tanks as a low-pressure liquid, so it has the function of peak shaving for the natural gas downstream system;（2）the C2＋ hydrocarbons separated from LNG can be cooled as low-pressure liquid by recovering the cryogenic energy of LNG, which is easy to be stored in tanks or be transported to petrochemical plants.

关 键 词： 冷量利用 液化天然气 轻烃 轻烃分离 优化

领　　域： [化学工程] [石油与天然气工程]