天然气与石油2025，Vol.43Issue(4)：32-37,6.DOI:10.3969/j.issn.1006-5539.2025.04.005
利用高压LNG冷能分离轻烃的工艺流程
Process flow for separating light hydrocarbons using high-pressure LNG cold energy
摘要
Abstract
LNG contains a large amount of cold energy.Utilizing this cold energy can produce high-added-value light hydrocarbon products with very low energy consumption,offering significant economic and social benefits.In order to match the existing BOG re-condensation recovery processes in LNG receiving terminals and completely recover all light hydrocarbons contained in LNG,a new process using high-pressure LNG as feedstock to separate light hydrocarbons by utilizing LNG cold energy is proposed.Commercial process simulation software was used to conduct calculations using rich LNG liquid from a specific LNG receiving terminal as an example,and key operating parameters were analyzed and studied.The results show that the new process system achieves a high light hydrocarbon recovery rate of 98.77%,with unit energy consumption of only 594 MJ/t for light hydrocarbon recovery.The new process system can better match the existing BOG re-condensation recovery process flow and operation mode of LNG receiving terminals,with all performance indicators reaching advanced level at home and abroad.The research results can provide valuable reference for the expansion of the light hydrocarbon recovery units at LNG receiving terminals.关键词
LNG富液/轻烃回收/高压LNG/冷能利用Key words
Rich LNG liquid/Light hydrocarbon recovery/High-pressure LNG/Cold energy utilization引用本文复制引用
白宇恒,傅敬强,李龙,汪贵,王科,田静,刘家洪..利用高压LNG冷能分离轻烃的工艺流程[J].天然气与石油,2025,43(4):32-37,6.基金项目
中国石油工程建设有限公司科学研究与技术开发项目"高品位LNG冷能长距离转输及高效利用关键技术研究"(CPECC2025KJ03) （CPECC2025KJ03）
