Application of the Thermodynamic Cycle to Assess the Energy Efficiency of Amine-Based Absorption of Carbon Capture

Yaofeng Xu, Shuai Deng, Li Zhao, Xiangzhou Yuan, Jianxin Fu, Shuangjun Li, Yawen Liang, Junyao Wang and Jun Zhao
Additional contact information
Yaofeng Xu: Key Laboratory of Efficient Utilization of Low and Medium Grade Energy, Tianjin University, Ministry of Education of China, Tianjin 300350, China
Shuai Deng: Key Laboratory of Efficient Utilization of Low and Medium Grade Energy, Tianjin University, Ministry of Education of China, Tianjin 300350, China
Li Zhao: Key Laboratory of Efficient Utilization of Low and Medium Grade Energy, Tianjin University, Ministry of Education of China, Tianjin 300350, China
Xiangzhou Yuan: College of Engineering Department of Chemical and Biological Engineering, Korea University, Seoul 02841, Korea
Jianxin Fu: Key Laboratory of Efficient Utilization of Low and Medium Grade Energy, Tianjin University, Ministry of Education of China, Tianjin 300350, China
Shuangjun Li: Key Laboratory of Efficient Utilization of Low and Medium Grade Energy, Tianjin University, Ministry of Education of China, Tianjin 300350, China
Yawen Liang: Tianjin Newcen Technical Co., Ltd., Tianjin 300384, China
Junyao Wang: Key Laboratory of Efficient Utilization of Low and Medium Grade Energy, Tianjin University, Ministry of Education of China, Tianjin 300350, China
Jun Zhao: Key Laboratory of Efficient Utilization of Low and Medium Grade Energy, Tianjin University, Ministry of Education of China, Tianjin 300350, China

Energies, 2019, vol. 12, issue 13, 1-20

Abstract: 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 ( Q re ) of a benchmark solvent (MEA) under typical conditions. Moreover, COP CO 2 , 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 ( η 2nd ), the developed COP CO 2 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 2 concentration of the flue gas, the higher COP CO 2 , up to 2.80 in 16 vt% and the Q re was 2.82 GJ/t, when R des = 1 and Δ T heat-ex = 10 K. The η 2nd 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.

Keywords: thermodynamic cycle; COP CO 2; amine-based absorption; carbon capture; regeneration heat; second-law efficiency (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

Downloads: (external link)
https://www.mdpi.com/1996-1073/12/13/2504/pdf (application/pdf)
https://www.mdpi.com/1996-1073/12/13/2504/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:12:y:2019:i:13:p:2504-:d:243925

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().