移动式小型BOG增压再液化装置功耗的模拟计算  

Simulated calculation of power consumption of the mobile small-scale BOG compression and reliquefaction plant

作　　者：王赟[1] 贺三[1] 战永辉[2] 王勇[1] 王浚浩 

机构地区：[1]西南石油大学石油工程学院,四川成都610500 [2]中国石化天然气分公司华北天然气销售营业部,山东青岛266000 [3]广东珠海金湾液化天然气有限公司,广东珠海519000

出　　处：《油气储运》2015年第6期662-666,共5页Oil & Gas Storage and Transportation

摘　　要：为了有效回收液化天然气接收站产生的BOG,减少BOG的排放,以国内某LNG接收站的BOG增压再液化工艺为例,利用HYSYS模拟设计工况下的运行参数,通过分析混合制冷剂的甲烷含量及组分配比、BOG压缩机出口压力、冷剂压缩机出口压力等参数对再液化系统的影响,获得了混合制冷剂的推荐配比为甲烷24%、氮气12%、乙烯33%、异丁烷31%,冷剂二级压缩机出口压力为4300kPa,BOG二级压缩机出口压力为7200kPa,节流压力为370kPa。在上述条件下,系统功耗为664.935kW,比以往降低了8.45%。In order to effectively recycle the BOG produced by LNG terminal and reduce its emission, a simulation is made for the BOG compression and reliquefaction process in a LNG terminal in China. With the operating parameters under the HYSYS-simulated conditions, this paper analyzes the influences of some parameters on the reliquefaction system, including the methane content and component proportion of mixed refrigerant, outlet pressure of BOG compressor, and outlet pressure of refrigerant compressor. Accordingly, the recommended proportion of mixed refrigerant is： 24% methane, 12% nitrogen, 33% ethylene and 31% iso-butane; the outlet pressure of two-stage refrigerant compressor is 4 300 k Pa, the outlet pressure of two-stage BOG compressor is 7 200 k Pa and throttling pressure is 370 k Pa. Under the above conditions, the system＇s power consumption is 664.935 k W, which is reduced by 8.45% from previous level.

关 键 词：LNG接收站 BOG 再液化 功耗 模拟 

分 类 号：TE821[石油与天然气工程—油气储运工程]