Abstract
Split-flow gas sweetening is known to consume less energy than a conventional gas sweetening process when the inlet sour gas contains a high concentration of acid gases. In this work, a computer simulation of a split-flow natural gas sweetening process based on absorption/stripping process with alkanoamine (MEA and DGA) solutions, using Aspen plus, was performed. The input of parameters such as the concentration of sour gases (CO2, H2S) in the feed gas has been examined. Simulation results show that the split-flow gas sweetening process can reduce the reboiler duty of a stripping tower better than the conventional gas sweetening process according to the concentration of CO2 in the feed gas.
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References
V. Mohebbi, R. M. Behbahani and M. Moshfeghian, Oil & Gas Journal, 105(28), 70 (2007).
B. D. Bhide, A. Voskericyan and S. A. Stern, J. Membrane Sci., 140, 27 (1998).
R. Idem, M. Wilson, P. Tontiwachwuthikul, A. Chakma, A. Veawab, A. Aroonwilas and D. Gelowitz, Ind. Eng. Chem. Res., 45, 2414 (2006).
T. Ball and R. Veldman, Chem. Eng. Prog., 87, 67 (1991).
R. H. Weiland, M. Rawal and R. G. Rice, AIChE J., 28(6), 963 (1982).
R. H. Weiland and John C. Dingman, GasTIPS®, 8(1), 21 (2002).
H. M. Kvamsdal and G. T. Rochelle, Ind. Eng. Chem. Res., 47, 867 (2008).
S. M. Lee, H. J. Song, S. Maken, S. K. Yoo, J.W. Park, S.W. Kim, J.G. Shim and K. R. Jang, Korean J. Chem. Eng., 25(1), 1 (2008).
M. Mofarahi, Y. Khojasteh, H. Khaledi and A. Farahnak, Energy, 33, 1311 (2008).
M. S. Ko, C. I. Park and H. Y. Kim, J. Korean Inst. Gas, 7(3), 7 (2003).
M. R. Rahimpour and A. Z. Kashkooli, Chem. Eng. Process., 43, 857 (2004).
Aspen Technology Inc., Technical report, Physical Property Methods and Models.
L. Lyddon and H. Nguyen, Analysis of various flow schemes for sweetening with amines, Bryan Research and Engineering, Inc. (2006).
J. C. Polasek, J. A. Bullin and S. T. Donnelly, Alternative flow schemes to reduce capital and operating costs of amine sweetening units, Bryan Research and Engineering, Inc. (2006).
R. L. Kent and B. Eisenberg, Hydrocarbon Processing, 55(2), 87 (1976).
A. J. Kidnay and W. R. Parrish, Fundamentals of natural gas processing, Taylor & Francis Group, Boca Raton (2006).
T. F. Moore, J. C. Dingman, F. L. Johnson, Jr. and Texaco Chemical Company, Austin, TX 78761, Environmental Progress, 3(3), 207 (1984).
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Bae, H.K., Kim, S.Y. & Lee, B. Simulation of CO2 removal in a split-flow gas sweetening process. Korean J. Chem. Eng. 28, 643–648 (2011). https://doi.org/10.1007/s11814-010-0446-6
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DOI: https://doi.org/10.1007/s11814-010-0446-6