LNG冷能发电和制冰联合系统模拟与分析  

Simulation and Analysis of Combined System of LNG Cold Energy Power Generation and Ice Making

作　　者：龚梦雅 蔡磊[1] 徐菱虹[1] 管延文[1] 刘文斌[1] 刘青国 GONG Mengya;CAI Lei;XU Linghong;GUAN Yanwen;LIU Wenbin;LIU Qingguo

机构地区：[1]华中科技大学环境科学与工程学院,湖北武汉430074 [2]佛燃能源集团股份有限公司,广东佛山528100

出　　处：《煤气与热力》2022年第10期I0021-I0025,共5页Gas & Heat

摘　　要：建立包括低温余热发电有机朗肯循环、工质相变制冰循环、蒸气压缩式制冰循环的LNG冷能发电和制冰联合系统。对3个循环的工质进行选取。在设定条件下,采用Aspen Plus软件对联合系统进行流程模拟与分析。将文献提出的LNG冷能利用系统作为比较对象,比较单位质量LNG发电量、制冰量。低温余热发电有机朗肯循环的工质选取乙烯。工质相变制冰循环、蒸气压缩式制冰循环的工质选取R152a。联合系统单位质量LNG制冰量比文献LNG冷能利用系统平均水平提高31.3%。在低温余热发电有机朗肯循环未采用工业余热加热工质的前提下,联合系统单位质量LNG发电量与文献LNG冷能利用系统持平。A combined system of LNG cold energy power generation and ice making including organic Rankine cycle for low-temperature waste heat power generation, working fluid phase-change ice making cycle and vapor compression ice making cycle is established. The working fluids for 3 cycles are selected. Under the set conditions, Aspen Plus software is used to simulate and analyze the process of the combined system. Taking the LNG cold energy utilization system proposed in the literature as the comparison object, the LNG power generation and ice-making capacity per unit mass are compared. Ethylene is selected as the working fluid of the organic Rankine cycle for low-temperature waste heat power generation. The working fluids of phase-change ice making cycle and vapor compression ice making cycle are R152 a. The unit mass LNG capacity per unit mass of the combined system is 31.3% higher than the average level of LNG cold energy utilization system in the literature. On the premise that the organic Rankine cycle for low-temperature waste heat power generation does not use industrial waste heat to heat the working fluid, the LNG power generation per unit mass of the combined system is the same as that of the LNG cold energy utilization system in the literature.

关 键 词：LNG冷能 发电 制冰 有机朗肯循环 

分 类 号：TE821[石油与天然气工程—油气储运工程]