LNG长输管道中间液化站流程分析

由于石油、煤炭等化石燃料的不断减少,加之环境污染和温室效应等问题的不断加剧,天然气作为一种高效、清洁的能源,日益受到世界各国的重视与青睐。天然气的液化及储存,是开发及利用天然气的关键技术。最新的理论研究表明,建设长距离液化天然气(LNG)输送管道技术上是可行的,经济上也是合理的。但是,对LNG长输管道中间液化站进行的研究还很少,液化站的流程及相关设备的选取问题还没有得到解决。通过对逆向卡诺循环进行的分析,结合丙烷、乙烯、甲烷等制冷剂的制冷特性,提出了LNG长输管道中间液化站的液化流程及所选取的相关设备。

Analysis on Liquefaction Station Along Long-Distance LNG Pipeline

As the declining of oil,coal and other fossil fuel,and the rising of environmental pollution and greenhouse's effect,natural gas,as a kind of high efficient and clean energy,has been given a great attention and favour by the countries all over the world.Natural gas liquefaction and storage technology is key to its use and development.The latest theory research shows that the construction of long distance LNG pipeline is feasible in technology and reasonable in the economy.However the researches of the liquefaction station of long distance LNG pipeline are few.The liquefaction process of the liquefaction station along the long distance LNG pipelines was discussed.Through the analysis on the reverse Carnot cycle,combined with cooling characteristics of refrigerant such as propane,ethylene,methane,liquefaction process of liquefaction station along long-distance LNG pipeline was proposed and related equipments were selected.