Construction and Optimization of Liquefied Natural Gas Regasification Cold Energy Comprehensive Utilization System on Floating Storage Regasification Unit

  • YAO Shouguang ,
  • WANG Mengdi ,
  • YAN Likun ,
  • ZHANG Qiang ,
  • YE Yong
展开
  • 1. School of Energy and Power Engineering, Jiangsu University of Science and Technology, Zhenjiang 212100, China
    2. China Ship Shenghui Equipment Co., Ltd, Zhangjiagang 215600, China

网络出版日期: 2023-12-04

基金资助

This research was supported by special project of R&D and industrialization of Marine equipment of national development and reform commission of China (National Development and Reform Commission High Technology [2015] No.1409)

版权

Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2022

Construction and Optimization of Liquefied Natural Gas Regasification Cold Energy Comprehensive Utilization System on Floating Storage Regasification Unit

  • YAO Shouguang ,
  • WANG Mengdi ,
  • YAN Likun ,
  • ZHANG Qiang ,
  • YE Yong
Expand
  • 1. School of Energy and Power Engineering, Jiangsu University of Science and Technology, Zhenjiang 212100, China
    2. China Ship Shenghui Equipment Co., Ltd, Zhangjiagang 215600, China

Online published: 2023-12-04

Supported by

This research was supported by special project of R&D and industrialization of Marine equipment of national development and reform commission of China (National Development and Reform Commission High Technology [2015] No.1409)

Copyright

Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2022

摘要

本文以近海浮式液化天然气存储及再气化装置(LNG-FSRU)为研究对象,针对其再气化系统中液化天然气(LNG)汽化冷能的高效利用,在已提出的一种纵向三级朗肯循环发电系统的基础上,构建了结合不同的蒸发气(BOG)处理工艺和低品位冷能海水淡化利用的LNG冷能梯级综合利用的新系统方案。通过对比分析纯工质和八种混合工质对新系统性能的影响,筛选出了使系统㶲效率最高的混合工质组合方案,并在此基础上采用遗传算法对该新系统进行了参数优化,得到使LNG冷㶲最大化释放的参数组合。得到的LNG冷能综合利用系统最终性能为净输出功5186kW,㶲效率30.6%。进一步通过对优化后的新系统方案进行技术经济分析,综合考虑系统发电和制淡水的营运收益及投资运维成本,其系统年经济效益为1871万元。

本文引用格式

YAO Shouguang , WANG Mengdi , YAN Likun , ZHANG Qiang , YE Yong . Construction and Optimization of Liquefied Natural Gas Regasification Cold Energy Comprehensive Utilization System on Floating Storage Regasification Unit[J]. 热科学学报, 2022 , 31(6) : 1853 -1867 . DOI: 10.1007/s11630-022-1597-6

Abstract

In this paper, the efficient utilization of liquefied natural gas (LNG) vaporization cold energy in offshore liquefied natural gas floating storage regasification unit (FSRU) is studied. On the basis of considering different boil-off gas (BOG) practical treatment processes, a cascade comprehensive utilization scheme of cold energy of LNG based on the longitudinal three-stage organic Rankine cycle power generation and the low-grade cold energy used to frozen seawater desalination was proposed. Through the comparative analysis of the effects of the pure working fluid and eight mixed working fluids on the performance of the new system, the combination scheme of system mixed working fluid with the highest exergy efficiency of the system was determined. Then, the genetic algorithm was used to optimize the parameters of the new system. After optimization, the net output power of the LNG cold energy comprehensive utilization system proposed in this paper was 5186 kW, and the exergy efficiency is 30.6%. Considering the power generation and freshwater revenue, the annual economic benefit of the system operating is 18.71 million CNY.

参考文献

[1] Fahmy M., Nabih H., Impact of ambient air temperature and heat load variation on the performance of air-cooled heat exchangers in propane cycles in LNG plants—analytical approach. Energy Conversion and Management, 2016, 121: 22–35.
[2] Fahmy M., Nabih H., El-Rasoul T., Optimization and comparative analysis of LNG regasification processes. Energy, 2015, 91: 371–385.
[3] Uwitonze H., Han S., Jangryeok C., Hwang K., Design process of LNG heavy hydrocarbons fractionation: Low LNG temperature recovery. Chemical Engineering and Processing: Process Intensification, 2014, 85: 187–195.
[4] Lee I., Park J., Moon I., Conceptual design and exergy analysis of combined cryogenic energy storage and LNG regasification processes: cold and power integration. Energy, 2017, 140: 106–115.
[5] Franco A., Casarosa C., Thermodynamic analysis of direct expansion configurations for electricity production by LNG cold energy recovery. Applied Thermal Engineering, 2015, 78: 649–657.
[6] Xue F., Chen Y., Ju Y., A review of cryogenic power generation cycles with liquefied natural gas cold energy utilization. Energy Procedia, 2016, 10: 363–374.
[7] Angelino G., Invernizzi C., The role of real gas Brayton cycles for the use of liquid natural gas physical exergy. Applied Thermal Engineering, 2011, 31: 827–833.
[8] Prananto L., Zaini I., Mahendranata B., Juangsa F., Aziz M., Soelaiman T., Use of the Kalina cycle as a bottoming cycle in a geothermal power plant: Case study of the Wayang Windu geothermal power plant. Applied Thermal Engineering, 2018, 132: 686–696.
[9] Sun X., Yao S., Xu J., Feng G., Yan L., Design and optimization of a full-generation system for marine LNG cold energy cascade utilization. Journal of Thermal Science, 2020, 29(3): 587–596.
[10] Le S., Lee J., Chen C., Waste cold energy recovery from liquefied natural gas (LNG) regasification including pressure and thermal energy. Energy, 2018, 152: 770–787.
[11] Bao J., Lin Y., Zhang R., Zhang N., He G., Strengthening power generation efficiency utilizing liquefied natural gas cold energy by a novel two-stage condensation Rankine cycle (TCRC) system. Energy Conversion and Management, 2017, 143: 312–325.
[12] Bao J., Lin Y., Zhang R., Zhang N., He G., Effects of stage number of condensing process on the power generation systems for LNG cold energy recovery. Applied Thermal Engineering, 2017, 126: 566–582.
[13] Zhao L., Dong H., Tang J., Cai J., Cold energy utilization of liquefied natural gas for capturing carbon dioxide in the flue gas from the magnesite processing industry. Energy, 2016, 105: 45–46.
[14] Salem A., Hudiab E., LNG regasification system to enhance the performance of gas turbines and water desalination systems. International Journal of energy, 2014, 8: 84–90.
[15] Mehrpooya M., Esfilar R., Moosavian S., Introducing a novel air separation process based on cold energy recovery of LNG integrated with coal gasification, transcritical carbon dioxide power cycle and cryogenic CO2 capture. Journal of Cleaner Production, 2017, 142: 1749–1764.
[16] Liu B., Rivière P., Coquelet C., Gicquel R., David F., Investigation of a two stage Rankine cycle for electric power plants. Applied Energy, 2012, 100: 285–294.
[17] Zhang M., Zhao L., Liu C., Cai Y., Xie X., A combined system utilizing LNG and low-temperature waste heat energy. Applied Thermal Engineering, 2016, 101: 525–536.
[18] Sun H., Zhu H., Liu F., Ding H., Simulation and optimization of a novel Rankine power cycle for recovering cold energy from liquefied natural gas using a mixed working fluid. Energy, 2014, 70: 317–324.
[19] Yao S.G., Tang L., Xu L.K., Feng G.Z., A supercritical single split longitudinal three-stage Rankine cycle power generation system. China, 2018, CN201710904258.8.
[20] Yao S.G., Xu L.K., Tang L., New cold-level utilization scheme for cascade three-level Rankine cycle using the cold energy of liquefied natural gas. Thermal Science, 2019, 23: 3865–3875.
[21] Yoonho L., LNG-FSRU cold energy recovery regasification using a zeotropic mixture of ethane and propane. Energy, 2019, 173: 857–869.
[22] Zhang G., Li B., Zhang X., Wang Q., Design and simulation analysis of cold energy utilization system of LNG floating storage regasification unit. Earth and Environmental Science, 2019, 300: 022117.
[23] Rao H., Karimi I., Optimal design of boil-off gas reliquefaction process in LNG regasification terminals. Computers & Chemical Engineering, 2018, 117: 171–190.
[24] Wu M., Zhu G., Sun D., He J., Optimization model and application for the recondensation process of boil-off gas in a liquefied natural gas receiving terminal. Applied Thermal Engineering, 2019, 147: 610–622.
[25] Zhang C., Pan Z., Shang L Y., Yang F., BOG treatment process optimization and energy consumption analysis of LNG receiving station. Oil and gas storage and transportation, 2017, 4: 421–425.
[26] Williams P.M., Ahmad M., Connolly B.S., Oatley-Radcliffe D.L., Technology for freeze concentration in the desalination industry. Desalination, 2015, 356: 314–327.
[27] Boulougouris E.K., Papanikolaou A.D., Multi-objective optimisation of a floating LNG terminal. Ocean Engineering, 2008, 35: 787–811.
[28] Mokshin A., Mokshin V., Sharnin L., Adaptive genetic algorithms used to analyze behavior of complex system. Communications in Nonlinear Science and Numerical Simulation, 2019, 71: 174–186.
[29] Chen Q., Worden K., Peng P., Genetic algorithm with an improved fitness function for (N)ARX modelling. Mechanical Systems and Signal Processing, 2007, 21: 994–1007.
[30] Lee S., Choi B., Thermodynamic assessment of integrated heat recovery system combining exhaust-gas heat and cold energy for LNG regasification process in FSRU vessel. Journal of mechanical science and technology, 2016, 30(3): 1389–1398.
[31] Mosaffa A.H., Farshi L.G., Exergoeconomic and environmental analyses of an air conditioning system using thermal energy storage. Applied Energy, 2016, 162: 515–526.
[32] Mosaffa A.H., Mokarram N.H., Farshi L.G., Thermo-economic analysis of combined different ORCs geothermal power plants and LNG cold energy. Geothermics, 2017, 65: 113–125.
[33] Choi I., Lee S., Seo Y., Chang D., Analysis and optimization of cascade Rankine cycle for liquefied natural gas cold energy recovery. Energy, 2013, 61: 179–195.
[34] Bao J., Lin Y., Zhang R., Zhang N., He G., Effects of stage number of condensing process on the power generation systems for LNG cold energy recovery. Applied Thermal Engineering, 2017, 126: 566–582.
文章导航

/