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Thermodynamic Analysis of Liquefied Natural Gas (LNG) Production Cycle in APCI Process

Thermodynamic Analysis of Liquefied Natural Gas (LNG) Production Cycle in APCI Process
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摘要 有最不消费精力和最大的效率的液化天然气(LNG ) 的适当生产是相当重要的。在这份报纸,借助于 APCI 过程的 LNG 生产周期被学习了。在 APCI 周期的每台设备的精力平衡方程和 exergy 平衡方程被建立。设备用严密热力学被描述,没有重要简化被假定。作为关键参数拿一些操作参数,性能(警察) 和串联周期的 exergy 效率的系数上的这些参数的影响被分析。结果显示那个警察和 exergy 效率将与增加先生的入口压力被改进(混合致冷)压缩机,在 precooling 过程以后 NG 和先生减少,汽轮机的插头压力,先生压缩机的入口温度和在在主要的低温实验法的热 exchanger ( MCHE )冷却以后的 NG 温度。分别地,警察和 APCI 周期的 exergy 效率将在优化关键参数以后超过 2% 和 40% 。 The appropriate production of liquefied natural gas (LNG) with least consuming energy and maximum efficiency is quite important. In this paper, LNG production cycle by means of APCI Process has been studied. Energy equi- librium equations and exergy equilibrium equations of each equipment in the APCI cycle were established. The equipments are described using rigorous thermodynamics and no significant simplification is assumed. Taken some operating parameters as key parameters, influences of these parameters on coefficient of performance (COP) and exergy efficiency of the cascading cycle were analyzed. The results indicate that COP and exergy efficiency will be improved with the increasing of the inlet pressure of MR (mixed refrigerant) compressors, the decreasing of the NG and MR after precooling process, outlet pressure of turbine, inlet temperature of MR compressor and NG temperature after cooling in main cryogenic heat exchanger (MCHE). The COP and exergy efficiency of the APCI cycle will be above 2% and 40%, respectively, after optimizing the key parameters.
作者 Shahrooz Abbasi Nezhad Bezhan Shabani Majid Soleimani Shahrooz Abbasi Nezhad (1) ; Bezhan Shabani (1) ; Majid Soleimani (1) ;
出处 《热科学学报:英文版》 SCIE EI CAS CSCD 2012年第6期564-571,共8页 Journal of Thermal Science
关键词 液化天然气 生产周期 热力学分析 APCI LNG 工艺 (火用)效率 能源消耗 LNG APCI process Coefficient of performance Exergy efficiency
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