Performance analysis of solar-assisted CO2 adsorption capture system based on dynamic simulation. (October 2020)

• Record Type: Journal Article
• Authors: Chen, Bing; Deng, Shuai; Zhao, Li; Li, Shuangjun; Wu, Kailong; Chen, Lijin; Zhao, Jie; Yuan, Xiangzhou; Liang, Yawen
• Is Part Of: Solar energy. Volume 209(2020)
• Page Start: 628
• Page End: 645
• Publication Date: 2020-10
• Subjects: Carbon capture -- CCS -- CO2 adsorption -- Renewable energy -- Solar energy -- Dynamic simulation; Solar energy -- Periodicals; Solar engines -- Periodicals; 621.47
• DOI: 10.1016/j.solener.2020.09.017
• Languages: English
• ISSNs: 0038-092X

Abstract

Graphical abstract: Highlights: A solar-assisted temperature-vacuum swing adsorption CO2 capture system is designed. Verified by experiments of core unit, a dynamic simulation system is established. The influences of cyclic parameters on dynamic performance are analyzed. Separation performance and feasibility analysis are both evaluated. Abstract: Carbon Capture, Utilization and Storage (CCUS) is regarded as one of the most economical solutions to achieve reasonable emission reductions for small and medium-sized point sources in the IEA Clean Technology Scenario (CTS). In order to reduced dependency of fossil energy, the solar-assisted post-combustion CO2 capture system are proposed and studied in past decade. Nevertheless, the most of existing feasibility studies on solar-assisted CO2 capture system are steady-state analysis under certain fixed working conditions, which tend to ignore the impact of fluctuations in weather conditions and even lead to a misguiding on feasibility study. Hence, the dynamic simulation model is necessary as it could provide more detailed information and close to the actual situation. This study presents a design of a solar-assisted 5-step temperature-vacuum swing adsorption CO2 capture (SOL-TVSA) system for an industrial emission source. Verified by experiments of core unit, a dynamic simulation system is established and the influences of cyclic parameters on dynamic performance are evaluated. Results show that when vacuum pressure is lower than 6 kPa and desorption temperature exceeds 70 °C, the recovery rate and purity of TVSA system can exceed 95% and 85% respectively. When the volume-area ratio is below 0.3, the annual amount of CO2 captured by SOL-TVSA system could exceed 2.11 ton and solar fraction can exceed 38.81%. The maximum values of coefficient of performance and exergy efficiency can reach 2.20 and 9.81% respectively.