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http://dx.doi.org/10.7842/kigas.2011.15.6.038

Case Studies for Optimizing Energy Efficiency of Propane Cycle Pressure Levels on C3-MR Process  

Lee, In-Kyu (Dept. of Chemical and Biomolecular Engineering, Yonsei University)
Tak, Kyung-Jae (Dept. of Chemical and Biomolecular Engineering, Yonsei University)
Lim, Won-Sub (Dept. of Chemical and Biomolecular Engineering, Yonsei University)
Moon, Il (Dept. of Chemical and Biomolecular Engineering, Yonsei University)
Kim, Hak-Sung (GS Const)
Choi, Kwang-Ho (GS Const)
Publication Information
Journal of the Korean Institute of Gas / v.15, no.6, 2011 , pp. 38-43 More about this Journal
Abstract
Natural gas liquefaction process runs under cryogenic condition, and it spends large amount of energy. Minimizing energy consumption of natural gas liquefaction process is an important issue because of its physical characteristics. Among many kinds of natural gas liquefaction processes, C3-MR(Propane Pre-cooled Mixed Refrigerant) process uses two kind of refrigerants. One is the propane as the pure refrigerant(PR) and the other is the mixed refrigerant(MR). In this study, to find the optimal compressing level, propane cycle is simulated on different pressure level. The case study result shows relationship between energy consumption and pressure level. As a result, the conclusion is that at a higher pressure level, process consumes lower energy. At 5 pressure-levels, energy consumption is 23.7% lower than 3 pressure-levels.
Keywords
LNG; natural gas liquefaction process; C3-MR; propane pre-cooled mixed refrigerant process; pure refrigerant; propane cycle;
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