Abstract—This paper presents a propane precooled mixed refrigerant (C3-MR) liquefaction plant with 3 pressure levels of propane cooling that is planned to be build in Timor-Leste and the simulation of refrigeration system for C3-MR process that is to predict liquefied natural gas (LNG) specific horse power of the system. By varying the natural gas temperature between 10 and 50oC and pressure between 20 and 60 bar respectively, the effect of natural gas temperature and pressure on specific horse power for the C3-MR was determined. The result of simulation indicates that the specific horse power for the C3-MR process depends on natural gas supply temperature and pressure. The increase of temperature from 30oC to 50oC results in 0.83% increase in specific horse power and the decrease of temperature from 30 to 10oC results in 0.82% decrease in specific horse power. The pressure increase from 40 to 60 bar results in 0.37% decrease in specific horse power and decrease from 40 to 20 bar results in 0.39% increase in specific horse power. In addition that, the production capacity per train increase by 4.78% when natural gas pressure supplied from 40 to 60 bar and 7.22% decrease when pressure decrease from 40 to 20 bar.
Index Terms—Liquefaction, refrigeration, LNG production, LNG specific power.
The authors are with the chemical engineering faculty, University of Indonesia, Depok – Indonesia (tel.: +6281286270139; e-mail: clementinop@gmail.com, sasep@che.ui.ac.id, sutrasno@che.ui.ac.id)
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Cite: Clementino Pereira, Asep Handaya S., and Sutrasno K., "Thermodynamic Analysis for Liquefaction of Natural Gas Using the C3-MR Refrigeration Process," International Journal of Chemical Engineering and Applications vol. 5, no. 1, pp. 17-22, 2014.
