浅析原料天然气组分对LNG液化流程的影响

Influences of Natural Gas' Contents on Liquefaction Procedures

不同地区的天然气组成有显著差别,天然气液化处理时,C3以上的烃含量太高将导致冷箱低温段产生冻堵,影响LNG装置的正常运行。本文分别从含氮量高的气份和含重烃量高的气份分析LNG液化流程,为实际生产根据气源特点选取不同的液化流程提供了一定依据和启发。

Natural gas drilled from different areas has sharply varied contents.Thus, during the liquefaction procedure, the natural gas with hydrocarbon content above C3 will freeze and block of the low-temperature section of cooling tank and lead to the malfunctioning of the production facilities.This paper analyzes and contrasts the liquefaction procedures of natural gas with high nitrogen or high heavy hydrocarbon.It is concluded that different liquefaction procedures should be adopted when liquefying natural gas with varied contents.