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Gas Sweetening Process Simulation: Investigation on Recovering Waste Hydraulic Energy

Authors: Meisam Moghadasi, Hassan Ali Ozgoli, Foad Farhani


In this research, firstly, a commercial gas sweetening unit with methyl-di-ethanol-amine (MDEA) solution is simulated and comprised in an integrated model in accordance with Aspen HYSYS software. For evaluation purposes, in the second step, the results of the simulation are compared with operating data gathered from South Pars Gas Complex (SPGC). According to the simulation results, the considerable energy potential contributed to the pressure difference between absorber and regenerator columns causes this energy driving force to be applied in power recovery turbine (PRT). In the last step, the amount of waste hydraulic energy is calculated, and its recovery methods are investigated.

Keywords: Gas sweetening unit, simulation, MDEA, power recovery turbine, waste-to-energy.

Digital Object Identifier (DOI):

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[1] Gutierrez, J. P., Ale Ruiz, E. L., Erdmann, E., Energy requirements, GHG emissions and investment costs in natural gas sweetening processes, Journal of Natural Gas Science & Engineering (2017), doi:10.1016/j.jngse.2016.12.036.
[2] Abdolkarim Sharifi, Elham Omidbakhsh Amiri, Effect of the Tower Type on the Gas Sweetening Process, Oil & Gas Science and Technology – Rev. IFP Energies nouvelles (2017) 72, 24.
[3] Tohid Nejad Ghaffar Borhani, Morteza Afkhamipour, Abbas Azarpour, Vahid Akbari, Seyed Hossein Emadi, Zainuddin A. Manan, Modeling study on CO2 and H2S simultaneous removal using MDEA solution, Journal of Industrial and Engineering Chemistry (2015).
[4] Meisam Moghadasi, Hossein Ghadamian, Hooman Farzaneh, Mohammad Moghadasi and Hassan Ali Ozgoli, CO2 capture technical analysis for gas turbine flue gases with complementary cycle assistance including nonlinear mathematical modeling, Procedia Environmental Sciences 17 (2013) 648 – 657.
[5] Wael A. Fouad, Abdallah S. Berrouk, Using mixed tertiary amines for gas sweetening energy requirement reduction, Journal of Natural Gas Science and Engineering 11 (2013) 12e17.
[6] Juan Pablo Gutierrez, Leonel A. Benitez, Elisa L. Ale Ruiz, Eleonora Erdmann, A sensitivity analysis and a comparison of two simulators performance for the process of natural gas sweetening, Journal of Natural Gas Science and Engineering 31 (2016) 800e807.
[7] R. Abdulrahman, I. M. Sebastine, Natural gas sweetening process simulation and optimization: A case study of Khurmala field in Iraqi Kurdistan region, Journal of Natural Gas Science and Engineering 14 (2013) 116e120.
[8] H. A. Ozgoli, H. Ghadamian, R. Roshandel & M. Moghadasi, Alternative Biomass Fuels Consideration Exergy and Power Analysis for Hybrid System Includes PSOFC and GT Integration, Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 37:1962–1970, 2015.
[9] Pradeep Bansal, Nick Marshall, Feasibility of hydraulic power recovery from waste energy in bio-gas scrubbing processes, Applied Energy 87 (2010) 1048–1053.
[10] Jeremy Martin, Mark Richter, Max Shirazi, Application of a Hydraulic Turbogenerator in the Acid Gas Removal at a Gas Plant in the Middle East, Energy Recovery Inc., San Leandro, CA 94577, USA.
[11] P. Krish, J. Martin and M. Shirazi, Optimize amine process design using liquid-phase turbochargers, Energy Recovery Inc., San Leandro, CA 94577, USA.
[12] The IPIECA website. (Online), Power Recovery Turbines, Available:
[13] The Sulzer website. (Online), Hydraulic power recovery turbine, Minimize your energy consumption, Available: