Application of the Thermodynamic Cycle to Assess the Energy Efficiency of Amine-Based Absorption of Carbon Capture
The thermodynamic cycle, as a significant tool derived from equilibrium, could provide a reasonable and rapid energy profile of complicated energy systems. Such a function could strongly promote an in-depth and direct understanding of the energy conversion mechanism of cutting-edge industrial system...
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doaj-9a9f75e094e348cc9fd456c246f9f0852020-11-24T21:30:35ZengMDPI AGEnergies1996-10732019-06-011213250410.3390/en12132504en12132504Application of the Thermodynamic Cycle to Assess the Energy Efficiency of Amine-Based Absorption of Carbon CaptureYaofeng Xu0Shuai Deng1Li Zhao2Xiangzhou Yuan3Jianxin Fu4Shuangjun Li5Yawen Liang6Junyao Wang7Jun Zhao8Key Laboratory of Efficient Utilization of Low and Medium Grade Energy, Tianjin University, Ministry of Education of China, Tianjin 300350, ChinaKey Laboratory of Efficient Utilization of Low and Medium Grade Energy, Tianjin University, Ministry of Education of China, Tianjin 300350, ChinaKey Laboratory of Efficient Utilization of Low and Medium Grade Energy, Tianjin University, Ministry of Education of China, Tianjin 300350, ChinaCollege of Engineering Department of Chemical and Biological Engineering, Korea University, Seoul 02841, KoreaKey Laboratory of Efficient Utilization of Low and Medium Grade Energy, Tianjin University, Ministry of Education of China, Tianjin 300350, ChinaKey Laboratory of Efficient Utilization of Low and Medium Grade Energy, Tianjin University, Ministry of Education of China, Tianjin 300350, ChinaTianjin Newcen Technical Co., Ltd., Tianjin 300384, ChinaKey Laboratory of Efficient Utilization of Low and Medium Grade Energy, Tianjin University, Ministry of Education of China, Tianjin 300350, ChinaKey Laboratory of Efficient Utilization of Low and Medium Grade Energy, Tianjin University, Ministry of Education of China, Tianjin 300350, ChinaThe thermodynamic cycle, as a significant tool derived from equilibrium, could provide a reasonable and rapid energy profile of complicated energy systems. Such a function could strongly promote an in-depth and direct understanding of the energy conversion mechanism of cutting-edge industrial systems, e.g., carbon capture system (CCS) However, such applications of thermodynamics theory have not been widely accepted in the carbon capture sector, which may be one of the reasons why intensive energy consumption still obstructs large-scale commercialization of CCS. In this paper, a kind of thermodynamic cycle was developed as a tool to estimate the lowest regeneration heat (<i>Q</i><sub>re</sub>) of a benchmark solvent (MEA) under typical conditions. Moreover, COP<sub>CO<sub>2</sub></sub>, a new assessment indicator, was proposed firstly for energy-efficiency performance analysis of such a kind of CCS system. In addition to regeneration heat and second-law efficiency (<i>η</i><sub>2nd</sub>), the developed COP<sub>CO<sub>2</sub></sub> was also integrated into the existing performance analysis framework, to assess the energy efficiency of an amine-based absorption system. Through variable parameter analysis, the higher CO<sub>2</sub> concentration of the flue gas, the higher COP<sub>CO<sub>2</sub></sub>, up to 2.80 in 16 vt% and the <i>Q</i><sub>re</sub> was 2.82 GJ/t, when <i>R</i><sub>des</sub> = 1 and Δ<i>T</i><sub>heat-ex</sub> = 10 K. The <i>η</i><sub>2nd</sub> was no more than 30% and decreased with the rise of the desorption temperature, which indicates the great potential of improvements of the energy efficiency.https://www.mdpi.com/1996-1073/12/13/2504thermodynamic cycleCOP<sub>CO<sub>2</sub></sub>amine-based absorptioncarbon captureregeneration heatsecond-law efficiency |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Yaofeng Xu Shuai Deng Li Zhao Xiangzhou Yuan Jianxin Fu Shuangjun Li Yawen Liang Junyao Wang Jun Zhao |
spellingShingle |
Yaofeng Xu Shuai Deng Li Zhao Xiangzhou Yuan Jianxin Fu Shuangjun Li Yawen Liang Junyao Wang Jun Zhao Application of the Thermodynamic Cycle to Assess the Energy Efficiency of Amine-Based Absorption of Carbon Capture Energies thermodynamic cycle COP<sub>CO<sub>2</sub></sub> amine-based absorption carbon capture regeneration heat second-law efficiency |
author_facet |
Yaofeng Xu Shuai Deng Li Zhao Xiangzhou Yuan Jianxin Fu Shuangjun Li Yawen Liang Junyao Wang Jun Zhao |
author_sort |
Yaofeng Xu |
title |
Application of the Thermodynamic Cycle to Assess the Energy Efficiency of Amine-Based Absorption of Carbon Capture |
title_short |
Application of the Thermodynamic Cycle to Assess the Energy Efficiency of Amine-Based Absorption of Carbon Capture |
title_full |
Application of the Thermodynamic Cycle to Assess the Energy Efficiency of Amine-Based Absorption of Carbon Capture |
title_fullStr |
Application of the Thermodynamic Cycle to Assess the Energy Efficiency of Amine-Based Absorption of Carbon Capture |
title_full_unstemmed |
Application of the Thermodynamic Cycle to Assess the Energy Efficiency of Amine-Based Absorption of Carbon Capture |
title_sort |
application of the thermodynamic cycle to assess the energy efficiency of amine-based absorption of carbon capture |
publisher |
MDPI AG |
series |
Energies |
issn |
1996-1073 |
publishDate |
2019-06-01 |
description |
The thermodynamic cycle, as a significant tool derived from equilibrium, could provide a reasonable and rapid energy profile of complicated energy systems. Such a function could strongly promote an in-depth and direct understanding of the energy conversion mechanism of cutting-edge industrial systems, e.g., carbon capture system (CCS) However, such applications of thermodynamics theory have not been widely accepted in the carbon capture sector, which may be one of the reasons why intensive energy consumption still obstructs large-scale commercialization of CCS. In this paper, a kind of thermodynamic cycle was developed as a tool to estimate the lowest regeneration heat (<i>Q</i><sub>re</sub>) of a benchmark solvent (MEA) under typical conditions. Moreover, COP<sub>CO<sub>2</sub></sub>, a new assessment indicator, was proposed firstly for energy-efficiency performance analysis of such a kind of CCS system. In addition to regeneration heat and second-law efficiency (<i>η</i><sub>2nd</sub>), the developed COP<sub>CO<sub>2</sub></sub> was also integrated into the existing performance analysis framework, to assess the energy efficiency of an amine-based absorption system. Through variable parameter analysis, the higher CO<sub>2</sub> concentration of the flue gas, the higher COP<sub>CO<sub>2</sub></sub>, up to 2.80 in 16 vt% and the <i>Q</i><sub>re</sub> was 2.82 GJ/t, when <i>R</i><sub>des</sub> = 1 and Δ<i>T</i><sub>heat-ex</sub> = 10 K. The <i>η</i><sub>2nd</sub> was no more than 30% and decreased with the rise of the desorption temperature, which indicates the great potential of improvements of the energy efficiency. |
topic |
thermodynamic cycle COP<sub>CO<sub>2</sub></sub> amine-based absorption carbon capture regeneration heat second-law efficiency |
url |
https://www.mdpi.com/1996-1073/12/13/2504 |
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