Thermodynamic Modeling of Carbon Dioxide Absorption in Methyl Diethanolamine Aqueous Solutions

Majafloo, Azam

Thermodynamic Modeling of Carbon Dioxide Absorption in Methyl Diethanolamine Aqueous Solutions

Document Type : Research Article

Author

Azam Majafloo

Department of Chemical Engineering, Central Tehran Branch, Islamic Azad University, Tehran, I.R. IRAN

Abstract

The natural gas as the most important alternative oil resources for providing energy is taken into consideration in recent years. Since the operational and environmental problems are created by some compounds in natural gas, so it must be refined in order to use it. CO₂ is one of these compounds. On the other hand, today the world is faced with the problem of minimizing greenhouse emissions. Among these gases, CO₂ is considered to be the major contributor due to its abundance. The absorption of CO₂ into alkanolamine chemical solvents is one of the most common methods for capturing CO₂. In this report, the SAFT-HR equation of state is used to determine the solubility of CO₂ in aqueous methyldiethanolamine solutions. By using the available parameters in the articles and adjusted parameters in this work, the prediction of equilibrium solubility of CO₂ for the temperature range of 298-413.15 K and the pressure range of 0.11-5036.7 kPa is done. The Average Absolute Deviation Percent (AAD%) in temperatures of 298-313-323-328-333-343-348-353-358-373-393-413 is equal to 47.45%, 39.9%, 36.5%, 8.8%, 17.6%, 6.6%, 29.2%, 10.5%, 10.7%, 27.2%, 6.4%, 4.5%, respectively. The average absolute deviation for all of the data points is found to be 27.9%.

Keywords

Main Subjects

Thermodynamics

References

[1] Saghafi, H. and M. Arabloo, Modeling of CO2 solubility in MEA, DEA, TEA, and MDEA aqueous solutions using AdaBoost-Decision Tree and Artificial Neural Network. International Journal of Greenhouse Gas Control, 2017. 58: p. 256-265.

[2] Stewart, C. and M.-A. Hessami, A study of methods of carbon dioxide capture and sequestration––the sustainability of a photosynthetic bioreactor approach. Energy Conversion and Management, 2005. 46(3): p. 403-420.

[3] Constantinou, A., S. Barrass, and A. Gavriilidis, CO2 Absorption in Polytetrafluoroethylene Membrane Microstructured Contactor Using Aqueous Solutions of Amines. Industrial & Engineering Chemistry Research, 2014. 53(22): p. 9236-9242.

[4] Nwaoha, C., et al., Carbon dioxide (CO2) capture performance of aqueous tri-solvent blends containing 2-amino-2-methyl-1-propanol (AMP) and methyldiethanolamine (MDEA) promoted by diethylenetriamine (DETA). International Journal of Greenhouse Gas Control, 2016. 53: p. 292-304.

[5] Ghalib, L., et al., Modeling the effect of piperazine on CO2 loading in MDEA/PZ mixture. Fluid Phase Equilibria, 2017. 434: p. 233-243.

[6] Afsharpour, A. and A. Haghtalab, Modeling of CO2 solubility in aqueous N-methyldiethanolamine solution using electrolyte modified HKM plus association equation of state. Fluid Phase Equilibria, 2017. 433: p. 149-158.

[7] Uyan, M., et al., Predicting CO2 solubility in aqueous N-methyldiethanolamine solutions with ePC-SAFT. Fluid Phase Equilibria, 2015. 393(0): p. 91-100.

[8] Park, S.-B. and H. Lee, Vapor-liquid equilibria for the binary monoethanolamine+ water and monoethanolamine+ethanol systems. Korean Journal of Chemical Engineering, 1997. 14(2): p. 146-148.

[9] Najafloo, A., A.T. Zoghi, and F. Feyzi, Measuring solubility of carbon dioxide in aqueous blends of N-methyldiethanolamine and 2-((2-aminoethyl)amino)ethanol at low CO2 loadings and modelling by electrolyte SAFT-HR EoS. The Journal of Chemical Thermodynamics, 2015. 82(0): p. 143-155.

[10] Zhao, B., et al., Enhancing the energetic efficiency of MDEA/PZ-based CO2 capture technology for a 650 MW power plant: Process improvement. Applied Energy, 2017. 185, Part 1: p. 362-375.

[11] Kent, R.L. and B. Elsenberg, BETTER DATA FOR AMINE TREATING. Hydrocarbon Processing, 1976. 55(2): p. 87-90.

[12] Mondal, B.K., S.S. Bandyopadhyay, and A.N. Samanta, Experimental measurement and Kent-Eisenberg modelling of CO2 solubility in aqueous mixture of 2-amino-2-methyl-1-propanol and hexamethylenediamine. Fluid Phase Equilibria, 2017. 437: p. 118-126.

[13] Deshmukh, R.D. and A.E. Mather, A mathematical model for equilibrium solubility of hydrogen sulfide and carbon dioxide in aqueous alkanolamine solutions. Chemical Engineering Science, 1981. 36(2): p. 355-362.

[14] Haghtalab, A. and M. Dehghani Tafti, Electrolyte UNIQUAC−NRF Model to Study the Solubility of Acid Gases in Alkanolamines. Industrial & Engineering Chemistry Research, 2007. 46(18): p. 6053-6060.

[15] Fakouri Baygi, S. and H. Pahlavanzadeh, Application of the perturbed chain-SAFT equation of state for modeling CO2 solubility in aqueous monoethanolamine solutions. Chemical Engineering Research and Design, 2015. 93(0): p. 789-799.

[16] Pahlavanzadeh, H. and S. Fakouri Baygi, Modeling CO2 solubility in Aqueous Methyldiethanolamine Solutions by Perturbed Chain-SAFT Equation of State. The Journal of Chemical Thermodynamics, 2013. 59(0): p. 214-221.

[17] Haghtalab, A. and S.H. Mazloumi, Electrolyte cubic square-well equation of state for computation of the solubility CO2 and H2S in aqueous MDEA solutions. Industrial and Engineering Chemistry Research, 2010. 49(13): p. 6221-6230.

[18] Huang, S.H. and M. Radosz, Equation of state for small, large, polydisperse, and associating molecules. Industrial & Engineering Chemistry Research, 1990. 29(11): p. 2284-2294.

[19] Huang, S.H. and M. Radosz, Equation of state for small, large, polydisperse, and associating molecules: extension to fluid mixtures. Industrial & Engineering Chemistry Research, 1991. 30(8): p. 1994-2005.

[20] Al-Rashed, O.A. and S.H. Ali, Modeling the solubility of CO2 and H2S in DEA–MDEA alkanolamine solutions using the electrolyte–UNIQUAC model. Separation and Purification Technology, 2012. 94(0): p. 71-83.

[21] Chen, S.S. and A. Kreglewski, Applications of the Augmented van der Waals Theory of Fluids.: I. Pure Fluids. Berichte der Bunsengesellschaft für physikalische Chemie, 1977. 81(10): p. 1048-1052.

[22] Tan, S.P., H. Adidharma, and M. Radosz, Recent Advances and Applications of Statistical Associating Fluid Theory. Industrial & Engineering Chemistry Research, 2008. 47(21): p. 8063-8082.

[23] Smith, W.R. and R.W. Missen, Strategies for solving the chemical equilibrium problem and an efficient microcomputer-based algorithm. The Canadian Journal of Chemical Engineering, 1988. 66(4): p. 591-598.

[24] Lagarias, J.C., et al., Convergence Properties of the Nelder-Mead Simplex Method in Low Dimensions. SIAM J. on Optimization, 1998. 9(1): p. 112-147.

[25] Lemoine, B., et al., Partial vapor pressure of CO2 and H2S over aqueous methyldiethanolamine solutions. Fluid Phase Equilibria,.2000. 172(2): p. 261-277.

[26] Sidi-Boumedine, R., et al., Experimental determination of carbon dioxide solubility data in aqueous alkanolamine solutions. Fluid Phase Equilibria, 2004. 218(1): p. 85-94.

[27] Ma'mun, S., et al., Solubility of carbon dioxide in 30 mass % monoethanolamine and 50 mass % methyldiethanolamine solutions. Journal of Chemical and Engineering Data, 2005. 50(2): p. 630-634.

[28] Kuranov, G., et al., Solubility of Single Gases Carbon Dioxide and Hydrogen Sulfide in Aqueous Solutions of N-Methyldiethanolamine in the Temperature Range 313-413 K at Pressures up to 5 MPa. Industrial & Engineering Chemistry Research, 1996. 35:6(6): p. 1959-1966.

[29] Rho, S.-W., et al., Solubility of CO2 in Aqueous Methyldiethanolamine Solutions. Journal of Chemical & Engineering Data, 1997. 42(6): p. 1161-1164.

[30] Kamps, Á.P.-S., et al., Solubility of Single Gases Carbon Dioxide and Hydrogen Sulfide in Aqueous Solutions of N-Methyldiethanolamine at Temperatures from 313 to 393 K and Pressures up to 7.6 MPa: New Experimental Data and Model Extension. Industrial & Engineering Chemistry Research, 2000. 40(2): p. 696-706.

[31] MacGregor, R.J. and A.E. Mather, Equilibrium solubility of H2S and CO2 and their mixtures in a mixed solvent. Can. J. Chem. Eng, 1991. 69: p. 1357.