Simulation of CO<sub>2</sub> Capture Process in Flue Gas from Oxy-Fuel Combustion Plant and Effects of Properties of Absorbent
Oxy-fuel combustion technology is an effective way to reduce CO<sub>2</sub> emissions. An ionic liquid [emim][Tf<sub>2</sub>N] was used to capture the CO<sub>2</sub> in flue gas from oxy-fuel combustion plant. The process of the CO<sub>2</sub> capture...
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MDPI AG
2022-04-01
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| author | Xiaoting Huang Ning Ai Lan Li Quanda Jiang Qining Wang Jie Ren Jiawei Wang |
| author_facet | Xiaoting Huang Ning Ai Lan Li Quanda Jiang Qining Wang Jie Ren Jiawei Wang |
| author_sort | Xiaoting Huang |
| collection | DOAJ |
| description | Oxy-fuel combustion technology is an effective way to reduce CO<sub>2</sub> emissions. An ionic liquid [emim][Tf<sub>2</sub>N] was used to capture the CO<sub>2</sub> in flue gas from oxy-fuel combustion plant. The process of the CO<sub>2</sub> capture was simulated using Aspen Plus. The results show that when the liquid–gas ratio is 1.55, the volume fraction of CO<sub>2</sub> in the exhaust gas is controlled to about 2%. When the desorption pressure is 0.01 MPa, desorption efficiency is 98.2%. Additionally, based on the designability of ionic liquids, a hypothesis on the physical properties of ionic liquids is proposed to evaluate their influence on the absorption process and heat exchanger design. The process evaluation results show that an ionic liquid having a large density, a large thermal conductivity, and a high heat capacity at constant pressure is advantageous. This paper shows that from capture energy consumption and lean circulation, oxy-fuel combustion is a more economical method. Furthermore, it provides a feasible path for the treatment of CO<sub>2</sub> in the waste gas of oxy-fuel combustion. Meanwhile, Aspen simulation helps speed up the application of ionic liquids and oxy-fuel combustion. Process evaluation helps in equipment design and selection. |
| first_indexed | 2024-03-09T10:29:39Z |
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| id | doaj.art-f3ee950b75104a79a6c3581da09d00c0 |
| institution | Directory Open Access Journal |
| issn | 2297-8739 |
| language | English |
| last_indexed | 2024-03-09T10:29:39Z |
| publishDate | 2022-04-01 |
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| spelling | doaj.art-f3ee950b75104a79a6c3581da09d00c02023-12-01T21:24:03ZengMDPI AGSeparations2297-87392022-04-01949510.3390/separations9040095Simulation of CO<sub>2</sub> Capture Process in Flue Gas from Oxy-Fuel Combustion Plant and Effects of Properties of AbsorbentXiaoting Huang0Ning Ai1Lan Li2Quanda Jiang3Qining Wang4Jie Ren5Jiawei Wang6College of Biological Chemical Science and Engineering, Jiaxing University, Jiaxing 314041, ChinaCollege of Biological Chemical Science and Engineering, Jiaxing University, Jiaxing 314041, ChinaCollege of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310023, ChinaZheJiang Supcon Software Co., Ltd., Hangzhou 310053, ChinaCollege of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310023, ChinaCollege of Biological Chemical Science and Engineering, Jiaxing University, Jiaxing 314041, ChinaEnergy and Bioproducts Research Institute, Aston University, Birmingham B4 7ET, UKOxy-fuel combustion technology is an effective way to reduce CO<sub>2</sub> emissions. An ionic liquid [emim][Tf<sub>2</sub>N] was used to capture the CO<sub>2</sub> in flue gas from oxy-fuel combustion plant. The process of the CO<sub>2</sub> capture was simulated using Aspen Plus. The results show that when the liquid–gas ratio is 1.55, the volume fraction of CO<sub>2</sub> in the exhaust gas is controlled to about 2%. When the desorption pressure is 0.01 MPa, desorption efficiency is 98.2%. Additionally, based on the designability of ionic liquids, a hypothesis on the physical properties of ionic liquids is proposed to evaluate their influence on the absorption process and heat exchanger design. The process evaluation results show that an ionic liquid having a large density, a large thermal conductivity, and a high heat capacity at constant pressure is advantageous. This paper shows that from capture energy consumption and lean circulation, oxy-fuel combustion is a more economical method. Furthermore, it provides a feasible path for the treatment of CO<sub>2</sub> in the waste gas of oxy-fuel combustion. Meanwhile, Aspen simulation helps speed up the application of ionic liquids and oxy-fuel combustion. Process evaluation helps in equipment design and selection.https://www.mdpi.com/2297-8739/9/4/95CO<sub>2</sub> captureoxy-fuel combustionionic liquidAspen Plusprocess evaluation |
| spellingShingle | Xiaoting Huang Ning Ai Lan Li Quanda Jiang Qining Wang Jie Ren Jiawei Wang Simulation of CO<sub>2</sub> Capture Process in Flue Gas from Oxy-Fuel Combustion Plant and Effects of Properties of Absorbent Separations CO<sub>2</sub> capture oxy-fuel combustion ionic liquid Aspen Plus process evaluation |
| title | Simulation of CO<sub>2</sub> Capture Process in Flue Gas from Oxy-Fuel Combustion Plant and Effects of Properties of Absorbent |
| title_full | Simulation of CO<sub>2</sub> Capture Process in Flue Gas from Oxy-Fuel Combustion Plant and Effects of Properties of Absorbent |
| title_fullStr | Simulation of CO<sub>2</sub> Capture Process in Flue Gas from Oxy-Fuel Combustion Plant and Effects of Properties of Absorbent |
| title_full_unstemmed | Simulation of CO<sub>2</sub> Capture Process in Flue Gas from Oxy-Fuel Combustion Plant and Effects of Properties of Absorbent |
| title_short | Simulation of CO<sub>2</sub> Capture Process in Flue Gas from Oxy-Fuel Combustion Plant and Effects of Properties of Absorbent |
| title_sort | simulation of co sub 2 sub capture process in flue gas from oxy fuel combustion plant and effects of properties of absorbent |
| topic | CO<sub>2</sub> capture oxy-fuel combustion ionic liquid Aspen Plus process evaluation |
| url | https://www.mdpi.com/2297-8739/9/4/95 |
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