接收站LNG冷能利用与BOG回收利用匹配性

Matching of Cold Energy Utilization and BOG Recycling in LNG Receiving Station

设计LNG冷能发电与BOG回收利用相匹配的综合工艺,给出工艺流程。BOG主要进行燃气轮机燃烧发电以及冷凝再液化,剩余BOG通过压缩送入中压管道或送至火炬燃烧,BOG处理量可以在6~44 t/h范围内波动。BOG燃烧后烟气通过余热锅炉产生的热水用于LNG冷能发电工艺中冷媒的气化,提高LNG冷能发电效率约25%。对接收站4种工况(基荷非卸船时期、基荷卸船时期、调峰非卸船时期、调峰卸船时期)的操作弹性进行分析,具有良好的操作弹性。

A comprehensive process matching LNG cold energy power generation and BOG recycling is designed,and the process flow is given.BOG is mainly used for gas turbine combustion power generation as well as condensation and reliquefaction.The rest of BOG is sent to medium-pressure pipelines through compression or sent to the torch for combustion.The BOG processing capacity can fluctuate in the range of 6 to 44 t/h.The hot water generated by flue gas after BOG combustion through waste heat boiler is used for the gasification of the refrigerant in LNG cold energy power generation process,improving LNG cold energy power generation efficiency by about 25%.The operating flexibility of the 4 working conditions of the receiving station(base-load non-unloading period,base-load unloading period,peak-shaving non-unloading period and peak-shaving unloading period)is analyzed,and it has good operation flexibility.