Comprehensive evaluation and sensitivity analysis of regeneration energy for acid gas removal plant using single and activated-methyl diethanolamine solvents

doi:10.1016/j.cjche.2019.12.004

摘要/Abstract

摘要： The absorption of acid gas using reactive amines is among the most widely used types of capturing technologies. However, the absorption process requires intensive energy expenditure majorly in the solvent regeneration process. This study simultaneously evaluated the regeneration energy of MDEA and PZ/MDEA solvents in terms of heat of absorption, sensible heat, and vaporization heat. Aspen Hysys version 8.8 simulation tool is applied to model the full acid gas removal plant for the chemical absorption process. The new energy balance technique presents around the absorption and desorption columns to bring a new perspective of energy distribution in the capturing of acid gas plants. Sensitivity analysis of regeneration energy and its three contributors is performed at several operation parameters such as absorber and stripper pressures, lean amine circulation rate, solvent concentration, reflux ratio, and CO₂ and H₂S concentrations. The results show that the heat of absorption of PZ/MDEA system is higher than that for MDEA system for the same operating conditions. The sensible heat is the main contributor in the required regeneration energy of MDEA solvent system. The simulation results have been validated against data taken from real plant and literature. The product specifications of our simulation corroborate with real plant data in an excellent approach; additionally, the profile temperature of the absorber and the stripper columns are in good agreement with literature. The overall results highlight the direction of the effects of each parameter on the heat of absorption, sensible heat, and vaporization heat.

关键词: Heat of absorption, Sensible heat, Vaporization heat, Regeneration energy, Acid gases capturing, Piperazine, Activated-Methyl diethanolamine

Abstract: The absorption of acid gas using reactive amines is among the most widely used types of capturing technologies. However, the absorption process requires intensive energy expenditure majorly in the solvent regeneration process. This study simultaneously evaluated the regeneration energy of MDEA and PZ/MDEA solvents in terms of heat of absorption, sensible heat, and vaporization heat. Aspen Hysys version 8.8 simulation tool is applied to model the full acid gas removal plant for the chemical absorption process. The new energy balance technique presents around the absorption and desorption columns to bring a new perspective of energy distribution in the capturing of acid gas plants. Sensitivity analysis of regeneration energy and its three contributors is performed at several operation parameters such as absorber and stripper pressures, lean amine circulation rate, solvent concentration, reflux ratio, and CO₂ and H₂S concentrations. The results show that the heat of absorption of PZ/MDEA system is higher than that for MDEA system for the same operating conditions. The sensible heat is the main contributor in the required regeneration energy of MDEA solvent system. The simulation results have been validated against data taken from real plant and literature. The product specifications of our simulation corroborate with real plant data in an excellent approach; additionally, the profile temperature of the absorber and the stripper columns are in good agreement with literature. The overall results highlight the direction of the effects of each parameter on the heat of absorption, sensible heat, and vaporization heat.

Key words: Heat of absorption, Sensible heat, Vaporization heat, Regeneration energy, Acid gases capturing, Piperazine, Activated-Methyl diethanolamine

Ammar Ali Abd, Samah Zaki Naji, Ahmed Barifcani. Comprehensive evaluation and sensitivity analysis of regeneration energy for acid gas removal plant using single and activated-methyl diethanolamine solvents[J]. 中国化学工程学报, 2020, 28(6): 1684-1693.

参考文献

[1] A. Hussain, A single stage membrane process for CO₂ capture from flue gas by a facilitated transport membrane, Sep. Sci. Technol. 47(13) (2012) 1857-1865.
[2] D.Q. Sun, B.W. Yi, J.H. Xu, W.Z. Zhao, G.S. Zhang, Y.F. Lu, Assessment of CO₂ emission reduction potentials in the Chinese oil and gas extraction industry:From a technical and cost-effective perspective, J. Clean. Prod. 201(2018) 1101-1110.
[3] U. Zahid, F.N. Al Rowaili, M.K. Ayodeji, U. Ahmed, Simulation and parametric analysis of CO₂ capture from natural gas using diglycolamine, Int. J. Greenh. Gas Con. 57(2017) 42-51.
[4] GCCSI, Global Status of CCS:Special Report, Introduction to Industrial Carbon Capture and Storage 2016.
[5] A. Muhammad, Y. GadelHak, Simulation based improvement techniques for acid gases sweetening by chemical absorption:A review, Int. J. Greenh. Gas Con. 37(2015) 481-491.
[6] D. Aaron, C. Tsouris, Separation of CO₂ from flue gas:A review, Sep. Sci. Technol. 40(1-3) (2005) 321-3482005.
[7] H. Li, J. Yan, P.E. Campana, Feasibility of integrating solar energy into a power plant with amine-based chemical absorption for CO₂ capture, Int. J. Greenh. Gas Con. 9(2012) 272-280.
[8] S. Freguia, G.T. Rochelle, Modeling of CO₂ capture by aqueous monoethanolamine, AIChE J. 49(7) (2003) 1676-1686.
[9] F.A. Tobiesen, H.F. Svendsen, T. Mejdell, Modeling of blast furnace CO₂ capture using amine absorbents, Ind. Eng. Chem. Res. 46(23) (2007) 7811-7819.
[10] H.M. Kvamsdal, J.P. Jakobsen, K.A. Hoff, Dynamic modeling and simulation of a CO₂ absorber column for post-combustion CO₂ capture, Chem. Eng. Process. 48(1) (2009) 135-144.
[11] M.S. Jassim, G.T. Rochelle, Innovative absorber/stripper configurations for CO₂ capture by aqueous monoethanolamine, Ind. Eng. Chem. Res. 45(8) (2006) 2465-2472.
[12] G. Soave, J.A. Feliu, Saving energy in distillation towers by feed splitting, Appl. Therm. Eng. 22(8) (2002) 889-896.
[13] C. Arnaiz del Pozo, S. Cloete, J.H. Cloete, A. Jiménez Álvaro, S. Amini, The potential of chemical looping combustion using the gas switching concept to eliminate the energy penalty of CO₂ capture, Int. J. Greenh. Gas Con. 83(2019) 265-281.
[14] J. N.J.N. Knudsen, J. Andersen, J.N. Jensen, O. Biede, Evaluation of process upgrades and novel solvents for the post combustion CO₂ capture process in pilot-scale, Energ. Procedia 4(2011) 1558-1565.
[15] M. Karimi, M. Hillestad, H.F. Svendsen, Capital costs and energy considerations of different alternative stripper configurations for post combustion CO₂ capture, Chem. Eng. Res. Des. 89(8) (2011) 1229-1236.
[16] L.M. Romeo, S. Espatolero, I. Bolea, Designing a supercritical steam cycle to integrate the energy requirements of CO₂ amine scrubbing, Int. J. Greenh. Gas Con. 2(4) (2008) 563-570.
[17] L. Raynal, P.A. Bouillon, A. Gomez, P. Broutin, From MEA to demixing solvents and future steps, a roadmap for lowering the cost of post-combustion carbon capture, Chem. Eng. J. 171(3) (2011) 742-752.
[18] S.Z. Naji, A.A. Abd, Sensitivity analysis of using diethanolamine instead of methyldiethanolamine solution for GASCO'S Habshan acid gases removal plant, Front. Eng. 13(2) (2019) 317-324.
[19] K. Li, W. Leigh, P. Feron, H. Yu, M. Tade, Systematic study of aqueous monoethanolamine (MEA)-based CO₂ capture process:Techno-economic assessment of the MEA process and its improvements, Appl. Energ. 165(2016) 648-659.
[20] C. Biliyok, A. Lawal, M. Wang, F. Seibert, Dynamic modelling, validation and analysis of post-combustion chemical absorption CO₂ capture plant, Int. J. Greenh. Gas Con. 9(2012) 428-445.
[21] A. Lawal, M. Wang, P. Stephenson, G. Koumpouras, H. Yeung, Dynamic modelling and analysis of post-combustion CO₂ chemical absorption process for coal-fired power plants, Fuel 89(10) (2010) 2791-2801.
[22] B. Zhao, F. Liu, Z. Cui, C. Liu, H. Yue, S. Tang, B. Liang, Enhancing the energetic efficiency of MDEA/PZ-based CO₂ capture technology for a 650 MW power plant:Process improvement, Appl. Energ. 185(2017) 362-375.
[23] W. Zhang, H. Liu, Y. Sun, J. Cakstins, C. Sun, C.E. Snape, Parametric study on the regeneration heat requirement of an amine-based solid adsorbent process for postcombustion carbon capture, Appl. Energ. 168(2016) 394-405.
[24] M. Gupta, E.F. da Silva, A. Hartono, H.F. Svendsen, Theoretical study of differential enthalpy of absorption of CO₂ with MEA and MDEA as a function of temperature, J. Physic. Chem. 117(32) (2013) 9457-9468.
[25] B.H. Li, N. Zhang, R. Smith, Simulation and analysis of CO₂ capture process with aqueous monoethanolamine solution, Appl. Energ. 161(2016) 707-717.
[26] A.Y. Ibrahim, F.H. Ashour, A.O. Ghallab, M. Ali, Effects of piperazine on carbon dioxide removal from natural gas using aqueous methyl diethanol amine, J. Nat. Gas Sci. Eng. 21(2014) 894-899.
[27] H. Svensson, C. Hulteberg, H.T. Karlsson, Heat of absorption of CO₂ in aqueous solutions of N-methyldiethanolamine and piperazine, Int. J. Greenh. Gas Con. 17(2013) 89-98.
[28] S. Bishnoi, G.T. Rochelle, Absorption of carbon dioxide into aqueous piperazine:reaction kinetics, mass transfer and solubility, Chem. Eng. Sci. 55(22) (2000) 5531-5543.
[29] K. Li, K. Jiang, T.W. Jones, P.H.M. Feron, R.D. Bennett, A.F. Hollenkamp, CO₂ regenerative battery for energy harvesting from ammonia-based post-combustion CO₂ capture, Appl Energ. 247(2019) 417-425.
[30] R. Zhang, X. Zhang, Q. Yang, H. Yu, Z. Liang, X. Luo, Analysis of the reduction of energy cost by using MEA-MDEA-PZ solvent for post-combustion carbon dioxide capture (PCC), Appl. Energ. 205(2017) 1002-1011.
[31] X. Zhang, R. Zhang, H. Liu, H. Gao, Z. Liang, Evaluating CO₂ desorption performance in CO₂-loaded aqueous tri-solvent blend amines with and without solid acid catalysts, Appl. Energ. 218(2018) 417-429.
[32] C. Nwaoha, C. Saiwan, T. Supap, R. Idem, P. Tontiwachwuthikul, W. Rongwong, A. Benamor, 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), Int. J. Greenh. Gas Con. 53(2016) 292-304, https://doi.org/10.1016/j.ijggc.2016.08.012.
[33] D.D.D. Pinto, S.A.H. Zaidy, A. Hartono, H.F. Svendsen, Evaluation of a phase change solvent for CO₂ capture:Absorption and desorption tests, Int. J. Greenh. Gas Con. 28(2014) 318-327.
[34] L. Raynal, P. Alix, P.A. Bouillon, A. Gomez, M.F. de Nailly, M. Jacquin, J. Trapy, The DMXTM process:An original solution for lowering the cost of post-combustion carbon capture, Energ. Procedia 4(2011) 779-786.
[35] J. Zhang, O. Nwani, Y. Tan, D.W. Agar, Carbon dioxide absorption into biphasic amine solvent with solvent loss reduction, Chem. Eng. Res. Des. 89(8) (2011) 1190-1196.
[36] J. Zhang, D.W. Agar, X. Zhang, F. Geuzebroek, CO₂ absorption in biphasic solvents with enhanced low temperature solvent regeneration, Energ. Procedia 4(2011) 67-74.
[37] K. Sobala, H. Kierzkowska-Pawlak, Heat of absorption of CO₂ in aqueous N, N-diethylethanolamine + N-methyl-1,3-propanediamine solutions at 313 K, Chin. J. Chem. Eng. 27(3) (2019) 628-633.
[38] H. Kim, S.J. Hwang, K.S. Lee, Novel shortcut estimation method for regeneration energy of amine solvents in an absorption-based carbon capture process, Environ. Sci. Technol. 49(3) (2015) 1478-1485.
[39] I. Kim, H.F. Svendsen, Comparative study of the heats of absorption of post-combustion CO₂ absorbents, Int. J. Greenh. Gas Con. 5(3) (2011) 390-395.
[40] H. Svensson, V. Zejnullahu Velasco, C. Hulteberg, H.T. Karlsson, Heat of absorption of carbon dioxide in mixtures of 2-amino-2-methyl-1-propanol and organic solvents, Int. J. Greenh. Gas Con. 30(2014) 1-8.
[41] K. Merkley, Enthalpies of Solution of CO₂ in Aqueous MDEA Solutions. M.S, Brigham Young University, Provo, UT, USA, Thesis, 1987.
[42] J.L. Oscarson, H.K. Grimsrud, S.E. Gillespie, Heats of mixing of gaseous CO₂/CH₄ mixtures with aqueous solutions of methyldiethanolamine and diethanolamine, Thermochim. Acta 351(1-2) (2000) 9-20.
[43] C. Mathonat, V. Majer, A.E. Mather, J.P.E. Grolier, Enthalpies of absorption and solubility of CO₂ in aqueous solutions of methyldiethanolamine, Fluid Phase Equilibr 140(1-2) (1997) 171-182.
[44] H. Kierzkowska-Pawlak, R. Zarzycki, Calorimetric measurements of CO₂ absorption into aqueous N-methyldiethanolamine solutions, Chem. Pap. 56(2000) 219.
[45] J.K. Carson, K.N. Marsh, A.E. Mather, Enthalpy of solution of carbon dioxide in (water + monoethanolamine, or diethanolamine, or N-methyldiethanolamine) and (water + monoethanolamine + N-methyldiethanolamine) at T=298.15 K, J. Chem. Thermodyn. 32(9) (2000) 1285-1296.
[46] H. Arcis, L. Rodier, K. Ballerat-Busserolles, J.Y. Coxam, Enthalpy of solution of CO₂ in aqueous solutions of methyldiethanolamine at T=322.5 K and pressure up to 5 MPa, J. Chem. Thermodyn. 40(6) (2008) 1022-1029.
[47] W. Conway, Q. Yang, S. James, C.C. Wei, M. Bown, P. Feron, G. Puxty, Designer amines for post combustion CO₂ capture processes, Energ. Procedia 63(2014) 1827-1834.
[48] U.E. Aronu, K.A. Hoff, H.F. Svendsen, CO₂ capture solvent selection by combined absorption-desorption analysis, Chem. Eng. Res. Des. 89(8) (2011) 1197-1203.
[49] C. Nwaoha, R. Idem, T. Supap, C. Saiwan, P. Tontiwachwuthikul, W. Rongwong, A. Benamor, Heat duty, heat of absorption, sensible heat and heat of vaporization of 2-amino-2-methyl-1-propanol (AMP), piperazine (PZ) and monoethanolamine (MEA) tri-solvent blend for carbon dioxide (CO₂) capture, Chem. Eng. Sci. 170(2017) 26-35.
[50] A. Chakma, CO₂ capture processes-Opportunities for improved energy efficiencies, Energ. Convers. Manage. 38(1997) S51-S56.
[51] M. Kundu, S.S. Bandyopadhyay, Solubility of CO₂ in water + diethanolamine + Nmethyldiethanolamine, Fluid Phase Equilibr 248(2) (2006) 158-167.
[52] T.L. Donaldson, Y.N. Nguyen, Carbon dioxide reaction kinetics and transport in aqueous amine membranes, Ind. Eng. Chem. 19(3) (1980) 260-266.
[53] A. Samanta, S.S. Bandyopadhyay, Kinetics and modeling of carbon dioxide absorption into aqueous solutions of piperazine, Chem. Eng. Sci. 62(24) (2007) 7312-7319.
[54] G. Sartori, D.W. Savage, Sterically hindered amines for carbon dioxide removal from gases, Ind. Eng. Chem. 22(2) (1983) 239-249.
[55] J.M. Plaza, G.T. Rochelle, Modeling pilot plant results for CO₂ capture by aqueous piperazine, Energ. Procedia 4(2011) 1593-1600.
[56] V. Feyzi, M. Beheshti, A. Gharibi Kharaji, Exergy analysis:A CO₂ removal plant using a-MDEA as the solvent, Energ. 118(2017) 77-84.
[57] S.S. Warudkar, K.R. Cox, M.S. Wong, G.J. Hirasaki, Influence of stripper operating parameters on the performance of amine absorption systems for post-combustion carbon capture:Part I. High pressure strippers, Int. J. Greenh. Gas Con. 16(2013) 342-350.
[58] A. Aboudheir, W. Elmoudir, Optimization of an existing 130 tonne per day CO₂ capture plant from a flue gas slipstream of a coal power plant, Energ. Procedia 37(2013) 1509-1516.
[59] S.A. Freeman, R. Dugas, D.H. Van Wagener, T. Nguyen, G.T. Rochelle, Carbon dioxide capture with concentrated, aqueous piperazine, Int. J. Greenh. Gas Con. 4(2) (2010) 119-124.
[60] C. Nwaoha, K. Odoh, E. Ikpatt, R. Orji, R. Idem, Process simulation, parametric sensitivity analysis and ANFIS modeling of CO₂ capture from natural gas using aqueous MDEA-PZ blend solution, Envoron. Chem. Eng. 5(6) (2017) 5588-5598.
[61] H.M. Kvamsdal, G.T. Rochelle, Effects of the temperature bulge in CO₂ absorption from flue gas by aqueous monoethanolamine, Ind. Eng. Chem. 47(3) (2008) 867-875.
[62] S. Moioli, L.A. Pellegrini, B. Picutti, P. Vergani, Improved rate-based modeling of H₂S and CO₂ removal by methyldiethanolamine scrubbing, Ind. Eng. Chem. 52(5) (2013) 2056-2065.
[63] T.N.G. Borhani, M. Afkhamipour, A. Azarpour, V. Akbari, S.H. Emadi, Z.A. Manan, Modeling study on CO₂ and H₂S simultaneous removal using MDEA solution, Ind. Eng. Chem. 34(2016) 344-355.
[64] A. Shahsavand, A. Garmroodi, Simulation of Khangiran gas treating units for various cooling scenarios, J. Nat. Gas Sci. Eng. 2(6) (2010) 277-283.
[65] J.P. Gutierrez, L.A. Benitez, E.L. Ale Ruiz, E. Erdmann, A sensitivity analysis and a comparison of two simulators performance for the process of natural gas sweetening, J. Nat. Gas Sci. Eng. 31(2016) 800-807.
[66] S. Mudhasakul, H. Ku, P.L. Douglas, A simulation model of a CO₂ absorption process with methyldiethanolamine solvent and piperazine as an activator, Int. J. Greenh. Gas Con. 15(2013) 134-141.
[67] J. Oexmann, C. Hensel, A. Kather, Post-combustion CO₂-capture from coal-fired power plants:Preliminary evaluation of an integrated chemical absorption process with piperazine-promoted potassium carbonate, Int. J. Greenh. Gas Con. 2(4) (2018) 539-552.
[68] A. Raksajati, M.T. Ho, D.E. Wiley, Reducing the cost of CO₂ capture from flue gases using aqueous chemical absorption, Ind. Eng. Chem. 52(47) (2013) 16887-16901.
[69] L. Ghalib, B.S. Ali, W.M. Ashri, S. Mazari, L.M. Saeed, Modeling the effect of piperazine on CO₂ loading in MDEA/PZ mixture, Fluid Phase Equilibr. 434(2017) 233-243.
[70] A. Dashti, M. Raji, A. Razmi, N. Rezaei, S. Zendehboudi, M. Asghari, Efficient hybrid modeling of CO₂ absorption in aqueous solution of piperazine:Applications to energy and environment, Chem. Eng. Res. Des. 144(2019) 405-417.
[71] L. Addington, C. Ness, An evaluation of general "Rules of Thumb" in amine sweetening unit design and operation, 89th Annual Convention of the Gas Processors Association, Austin, Texas, USA, Vol. 1, 2010, pp. 119-135.
[72] J. Jung, Y.S. Jeong, U. Lee, Y. Lim, C. Han, New configuration of the CO₂ capture process using aqueous monoethanolamine for coal-fired power plants, Ind. Eng. Chem. 54(15) (2015) 3865-3878.
[73] O. Younas, F. Banat, Parametric sensitivity analysis on a GASCO's acid gas removal plant using ProMax simulator, J. Nat. Gas Sci. Eng. 18(2014) 247-253.
[74] M.F. De Figueiredo, K.D. Brito, W.B. Ramos, L.G. Sales Vasconcelos, R.P. Brito, Effect of solvent content on the separation and the energy consumption of extractive distillation columns, Chem. Eng. Commun. 202(9) (2014) 1191-1199.
[75] W.A. Fouad, A.S. Berrouk, Using mixed tertiary amines for gas sweetening energy requirement reduction, J. Nat. Gas Sci. Eng. 11(2013) 12-17.