In this paper, a new developed integrated process for the production of power, helium, and liquefied natural gas (LNG) is proposed and analyzed. The proposed integrated process is composed of the following subsystems: helium recovery and LNG production unit, molten carbonate fuel cell (MCFC), absorption refrigeration system (ARS), as well as the steam power plant. Natural gas enters the helium recovery unit, in which crude helium and LNG are produced, and then, methane-rich natural gas with a higher heating value enters the MCFC cycle, which is responsible for generating power and supplying required heat duty of the system. The produced cooling in the ARS unit is also introduced to the helium recovery cycle to provide its necessary cooling. A comprehensive comparative study is employed to assess process performance. In addition, a sensitivity analysis is performed to investigate the effect of the main operating parameters such as current density, fuel utilization factor, fuel cell temperature, and feed flow rate on process efficiency. Based on the energy analysis results, the electrical efficiency of MCFC and the overall thermal efficiency of the process are 42.01% and 94.91%, respectively. Also, the integrated system produces helium and LNG, with helium extraction rate of 91.42% and specific power consumption (SPC) of 0.2086 kWh/kg LNG, respectively, in conjunction with 4793 MW net power.

在本文中，提出并分析了一种新开发的用于生产电力，氦气和液化天然气（LNG）的集成工艺。拟议的集成过程由以下子系统组成：氦气回收和LNG生产单元，熔融碳酸盐燃料电池（MCFC），吸收式制冷系统（ARS）以及蒸汽发电厂。天然气进入氦回收单元，在其中产生粗氦和LNG，然后，具有较高发热量的富含甲烷的天然气进入MCFC循环，该循环负责发电并提供系统所需的热负荷。ARS单元中产生的冷却也被引入氦气回收循环中，以提供必要的冷却。进行了全面的比较研究以评估过程性能。此外，进行灵敏度分析以研究主要操作参数（例如电流密度，燃料利用率，燃料电池温度和进料流速）对过程效率的影响。根据能量分析结果，MCFC的电效率和整个过程的总热效率分别为42.01％和94.91％。此外，该集成系统还可以产生氦气和LNG，氦气提取率为91.42％，比功率消耗（SPC）分别为0.2086 kWh / kg LNG，同时还具有4793 MW净功率。MCFC的电效率和该过程的整体热效率分别为42.01％和94.91％。此外，该集成系统还可以产生氦气和LNG，氦气提取率为91.42％，比功率消耗（SPC）分别为0.2086 kWh / kg LNG，同时还具有4793 MW净功率。MCFC的电效率和该过程的整体热效率分别为42.01％和94.91％。此外，该集成系统还可以产生氦气和LNG，氦气提取率为91.42％，比功率消耗（SPC）分别为0.2086 kWh / kg LNG，同时还具有4793 MW净功率。