Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Experimental studies on mass transfer performance for CO2 absorption into aqueous N,N-dimethylethanolamine (DMEA) based solutions in a PTFE hollow fiber membrane contactor
Highlights The performance of CO2 absorption into different DMEA-based blended solutions was investigated using a hollow fiber membrane contactor. The effects of various operating parameters on CO2 absorption performance have been studied. The blends of DMEA + PZ shows a promising alternative for CO2 capture due to the best CO2 absorption performance.
Abstract CO2 absorption performance for various blended N,N-dimethylethanolamine (DMEA) solutions in the presence of absorption promoters including Monoethanolamine (MEA), Piperazine (PZ), 2-(Ethylamino)ethanol (EAE), 2-(Methylamino)ethanol (MAE) and 2-Amino-2-methyl-1-propanol (AMP) was investigated in terms of CO2 absorption flux by using a polytetrafluoroethylene (PTFE) hollow fiber membrane contactor. The experimental results show that the CO2 absorption flux increases with a reasonable increase in liquid velocity, liquid temperature and total amine concentration. Also, the CO2 absorption flux can increase by increasing gas velocity, CO2 partial pressure but decrease with the increased lean CO2 loading. In addition, it can be found that all of the investigated activated amines can improve the CO2 absorption flux of aqueous DMEA solution. For fresh amine solution, the order of CO2 absorption flux for the investigated amine blends can be ranked as: DMEA < DMEA + AMP < DMEA + MEA < DMEA + EAE < DMEA + MAE < DMEA + PZ. By contrast, for the amine solution with CO2 loading of over 0.3 mol/mol, the order has also changed accordingly and can be ranked as: DMEA < DMEA + AMP < DMEA + EAE < DMEA + MAE < DMEA + MEA < DMEA + PZ. The DMEA + PZ mixture presents a significant improvement up to 52.44% in CO2 absorption flux compared to that of single DMEA solution, and can be considered as a promising alternative for CO2 capture.
Experimental studies on mass transfer performance for CO2 absorption into aqueous N,N-dimethylethanolamine (DMEA) based solutions in a PTFE hollow fiber membrane contactor
Highlights The performance of CO2 absorption into different DMEA-based blended solutions was investigated using a hollow fiber membrane contactor. The effects of various operating parameters on CO2 absorption performance have been studied. The blends of DMEA + PZ shows a promising alternative for CO2 capture due to the best CO2 absorption performance.
Abstract CO2 absorption performance for various blended N,N-dimethylethanolamine (DMEA) solutions in the presence of absorption promoters including Monoethanolamine (MEA), Piperazine (PZ), 2-(Ethylamino)ethanol (EAE), 2-(Methylamino)ethanol (MAE) and 2-Amino-2-methyl-1-propanol (AMP) was investigated in terms of CO2 absorption flux by using a polytetrafluoroethylene (PTFE) hollow fiber membrane contactor. The experimental results show that the CO2 absorption flux increases with a reasonable increase in liquid velocity, liquid temperature and total amine concentration. Also, the CO2 absorption flux can increase by increasing gas velocity, CO2 partial pressure but decrease with the increased lean CO2 loading. In addition, it can be found that all of the investigated activated amines can improve the CO2 absorption flux of aqueous DMEA solution. For fresh amine solution, the order of CO2 absorption flux for the investigated amine blends can be ranked as: DMEA < DMEA + AMP < DMEA + MEA < DMEA + EAE < DMEA + MAE < DMEA + PZ. By contrast, for the amine solution with CO2 loading of over 0.3 mol/mol, the order has also changed accordingly and can be ranked as: DMEA < DMEA + AMP < DMEA + EAE < DMEA + MAE < DMEA + MEA < DMEA + PZ. The DMEA + PZ mixture presents a significant improvement up to 52.44% in CO2 absorption flux compared to that of single DMEA solution, and can be considered as a promising alternative for CO2 capture.
Experimental studies on mass transfer performance for CO2 absorption into aqueous N,N-dimethylethanolamine (DMEA) based solutions in a PTFE hollow fiber membrane contactor
Cao, Fan (Autor:in) / Gao, Hongxia (Autor:in) / Xiong, Qian (Autor:in) / Liang, Zhiwu (Autor:in)
International Journal of Greenhouse Gas Control ; 82 ; 210-217
17.12.2018
8 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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