石油与天然气化工Issue(3)：44-49,6.DOI:10.3969/j.issn.1007-3426.2015.03.010
LNG接收站冷能用于轻烃回收工艺
Process of light hydrocarbons recovery from LNG with cryogenic energy utilized in LNG terminal
王雨帆 1李玉星 1王武昌 1王小尚 2刘景俊2
作者信息
- 1. m.中国石油大学 华东 储运与建筑工程学院
- 2. 中国石化青岛液化天然气有限责任公司
- 折叠
摘要
Abstract
In recent years ,with the rapid development of large LNG terminals ,the research of LNG cryogenic energy utilization is increasingly urgent .C+2 light hydrocarbons ,which are resources with high additional values ,can be separated from LNG by efficiently utilizing its cryogenic energy . An improved process of light hydrocarbons separation is proposed in this paper :the cold energy of the demethanizer feed is provided to the condenser of the deethanizer for liquefied ethane and C +3 ,w hich are easy to be stored and transported .Then ,a case study of applying the process was carried out for the rich LNG of a domestic LNG terminal ,which indicated that the recovery rate was about 97 .5%for C+3 ,and about 95 .78% for ethane .And the economics of the process was studied .The results showed that recovering light hydrocarbons from LNG by this process could gain great profits .This paper also proposed a new calculation method of LNG cryogenic energy utilization rate for the process .It is concluded that LNG cryogenic energy utilization rate is 38 .93% with the process used a‐lone .Sensitivity analysis was conducted for the composition ,temperature and other parameters of LNG ,and the effects of them on the recovery rate of C+3 and ethane and the energy consumption were studied .It provided a guidance for optimal operation of the terminals .关键词
接收站/LNG/冷能利用/天然气/轻烃回收/轻烃分离Key words
terminal/LNG/cryogenic energy utilization/natural gas/light hydrocarbons recover-y/light hydrocarbons separation分类
能源科技引用本文复制引用
王雨帆,李玉星,王武昌,王小尚,刘景俊..LNG接收站冷能用于轻烃回收工艺[J].石油与天然气化工,2015,(3):44-49,6.
