Simulation and parametric analysis of CO2 capture from natural gas using diglycolamine

Abstract Conventional natural gas sweetening processes are mainly focused on the H 2 S removal with the bulk removal of CO 2 . However, the placement of natural gas processes within the carbon capture and storage (CCS) framework provides an opportunity to achieve the synergies between the two technologies. The purpose of this paper is to investigate the CO 2 capture process from the natural gas processing plants. In this study, a steady-state model has been developed that can reasonably predict the CO 2 capture mechanism from the natural gas using diglycolamine (DGA) solvent. The developed model is first validated against a commercial operating plant using the required data and operating conditions. The results show that the developed model is in good agreement with the operational data. The model is then tested for all the possible key parameters that can affect the performance of the process. Since, achieving the product specification with minimum possible energy requirement is the goal of any process plant, hence, the effect of operational parameters is investigated in terms of CO 2 content in the sweet gas and reboiler duty.

[1]  Nasir M.A. Al-Lagtah,et al.  Optimization and performance improvement of Lekhwair natural gas sweetening plant using Aspen HYSYS , 2015 .

[2]  Jiri van Straelen,et al.  CO2 capture for refineries, a practical approach , 2009 .

[3]  Jerry A. Bullin,et al.  Selecting Amines for Sweetening Units , 1984 .

[4]  Andrea Ramírez,et al.  Comparative assessment of CO2 capture technologies for carbon-intensive industrial processes , 2012 .

[5]  Kazuya Goto,et al.  A review of efficiency penalty in a coal-fired power plant with post-combustion CO2 capture , 2013 .

[6]  A. Mehrabani-Zeinabad,et al.  Influence of CO2 Residual of Regenerated Amine on the Performance of Natural Gas Sweetening Processes Using Alkanolamine Solutions , 2016 .

[7]  Chonghun Han,et al.  New Configuration of the CO2 Capture Process Using Aqueous Monoethanolamine for Coal-Fired Power Plants , 2015 .

[8]  B. Khoshandam,et al.  Simulation and comparison of Sulfinol solvent performance with Amine solvents in removing sulfur compounds and acid gases from natural sour gas , 2015 .

[9]  Fawzi Banat,et al.  Energy and exergical dissection of a natural gas sweetening plant using methyldiethanol amine (MDEA) solution , 2014 .

[10]  Geoffrey W. Stevens,et al.  Review of solvent based carbon-dioxide capture technologies , 2015, Frontiers of Chemical Science and Engineering.

[11]  Thomas Hills,et al.  Carbon Capture in the Cement Industry: Technologies, Progress, and Retrofitting. , 2016, Environmental science & technology.

[12]  Michael Binns,et al.  Automated process design of acid gas removal units in natural gas processing , 2015, Comput. Chem. Eng..

[13]  Eleonora Erdmann,et al.  A sensitivity analysis and a comparison of two simulators performance for the process of natural gas sweetening , 2016 .

[14]  L. Peters,et al.  CO2 removal from natural gas by employing amine absorption and membrane technology—A technical and economical analysis , 2011 .

[15]  Ayyaz Muhammad,et al.  Simulation based improvement techniques for acid gases sweetening by chemical absorption: A review , 2015 .

[16]  Sung Young Kim,et al.  Simulation of CO2 removal in a split-flow gas sweetening process , 2011 .

[17]  Ashraf Dehghani,et al.  SIMULATION OF AN OPERATIONAL AMINE BASED CO2 REMOVAL PLANT AS AN EXAMPLE OF CO2 CAPTURE AT COAL-FIRED POWER PLANTS , 2015 .

[18]  Abolghasem Kazemi,et al.  Feasibility study, simulation and economical evaluation of natural gas sweetening processes – Part 1: A case study on a low capacity plant in iran , 2014 .

[19]  Fawzi Banat,et al.  Parametric sensitivity analysis on a GASCO's acid gas removal plant using ProMax simulator , 2014 .

[20]  Partho Sarothi Roy,et al.  Aspen-HYSYS Simulation of Natural Gas Processing Plant , 2012 .

[21]  Ayyaz Muhammad,et al.  Correlating the additional amine sweetening cost to acid gases load in natural gas using Aspen Hysys , 2014 .

[22]  Eric F. May,et al.  The removal of CO2 and N2 from natural gas: A review of conventional and emerging process technologies , 2012 .

[23]  Stewart,et al.  Gas Sweetening and Processing Field Manual , 2011 .

[24]  Hiwa Khaledi,et al.  Design of CO2 absorption plant for recovery of CO2 from flue gases of gas turbine , 2008 .

[25]  Giampaolo Manfrida,et al.  Comparative study of chemical absorbents in postcombustion CO2 capture , 2010 .