中小型天然气液化工厂bog压缩机技术和经济分析资料.pdfVIP

述 Summhary 中小型天然气液化工厂BOG压缩机 技术和经济分析 刘 佳，白改玲 （中国寰球工程公司，北京 100012） [摘 要] ：从技术与经济性角度，开展了两类蒸发气（BOG）压缩机的对比研究，结果显示，低温BOG压缩机工作简单、辅 助设备少、占地面积小、调整控制灵活，更适应LNG工厂BOG动态变化的特点，在技术上优于复热BOG压缩机。选取了两 个中型LNG工厂实际案例，计算BOG压缩的主要经济指标，发现采用低温压缩机的年均使用成本比复热压缩机低20% 以上， 经济性更 。 [关键词] ：LNG工厂；低温BOG压缩机；复热BOG压缩机；技术分析；经济分析 中图分类号：TH457 文献标志码：B 文章编号：1006-2971（2017）02-0060-05 Technical and Economic Analysis of BOG Compressor for Small Medium Type LNG Plant LIU Jia, BA I Gai-ling (China Huanqiu Contracting and Engineering Corporation, Beij ing 100012, China) Abstract:From the technical and economic point of view, a comparative study is carried out on BOG compression at cryogenic and ambient suction temperature. The result shows that the cryogenic compressor is characterized by simple and flexible operation, small footprint, and is well adapted to the dynamic characteristics of BOG compression system, so cryogenic BOG compressor is technically superior to ordinary compressor with BOG reheating. Taken two cases of medium type LNG plants, some key economic indicators are calculated, the average annual cost of cryogenic compressors are lower than that of ordinary compressors by more than 20% , more efficient with better economy. Key words ：LNG plant; cryogenic BOG compressor; compressor with BOG reheating; technical analysis; economic analysis 1 引言 直接压缩和复热后压缩两类，Haukedal [3]指出，低 近年来，我国液化天然气（LNG）需求持续增 温进气能显著减小BOG压缩机尺寸，提高单级增 [4] 长，LNG设施快速增加，由于在LNG生产、储存和 压比和压缩效率。根据热力学原理 ，进气温度越 [5] [6] 装/卸载等过程中不可避免存在漏热、设备散热和 低，压缩功越小，陈金锋 和赵彬 的实验表明， [1，2