Modeling and optimization of natural gas liquefaction process for reducing energy consumption
- Authors
- Jeon, G.; Song, Kiwook; Lee, Chul-Jin; Lim, Youngsub; Han, Chonghun
- Issue Date
- 2011
- Citation
- 11AIChE - 2011 AIChE Annual Meeting, Conference Proceedings
- Journal Title
- 11AIChE - 2011 AIChE Annual Meeting, Conference Proceedings
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/50037
- Abstract
- Because of limited fuel reserves, increasing prices of oil and growing concerns about the environment, natural gases are receiving attention as low-carbon, eco-friendly fuels. Natural gases have very large gas-to-liquid volume ratio, so the liquefaction process is essential to reduce volume of natural gases. Through the liquefaction process, natural gas becomes liquefied natural gas (LNG). LNG has a comparative advantage in terms of transport and safety. There are several kinds of natural gas liquefaction process. Among the liquefaction processes, propane pre-cooled mixed refrigerant (C3MR) process is the most widely used natural gas liquefaction process to date. In this study, a steady-state simulation of the C3MR process was performed using ASPEN HYSYS™ and it was optimized to reduce energy consumption. Optimization formulation is developed to minimize operating cost of the process. Optimization variables are temperature, pressure, and flow-rate of refrigerant and composition of the mixed refrigerant.
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