shang LNG液化工艺

LNG是当今世界上最安全、适合长距离运输并可直接利用的最清洁能源。在LNG的液化过程中,天然气中的水、惰性气体、C5等烃类基本被脱去,燃烧时温室气体排放量低,被公认为是未来世界普遍采用的燃料。迄今已成熟的天然气液化工艺有:节流制冷循环、膨胀机制冷循环、级联式制冷循环、混合冷剂制冷循环和带预冷的混合冷剂制冷循环。按制冷方式主要分为:级联式液化流程;混合制冷剂液化流程;带膨胀机的液化流程。本文简要介绍了液化天然气的这三种主要液化流程,对比了三种流程的优缺点及适用范围,展望了我国LNG液化工业的发展前景。

LNG Liquefied Technics

LNG is nowadays the most secure and clean energy source which is transported for a long distance and used directly in the world. In the LNG liquified process, water, inert gases, hydrocarbons like C5 are eliminated. It will release less greenhouse gases when it is burnt. So it is concerned as the most universal fule in the future world. There are three main forms of LNG liquified procrss according to the refrigeration form:Cascade, MRC, and Expander - Cycle. This article talks about these three main liquified processes and compares their advantages , disadvantages and their application araes. It also vistas the potential development of LNG liquified industry in China.