Improvement of CO₂ Separation Performance by Blended Aqueous Solutions of DEA+AMP in Hollow Fiber Membrane Contactor (HFMC)

Abstract:

Absorption of carbon dioxide (CO2) by blended diethanolamine (DEA) + 2-amino-2- methyl-1-propanol (AMP) and single DEA solvents were compared using hollow fiber membrane contactor (HFMC). Experimental results showed AMP additive has positive influence to improve CO2 absorption flux and the optimum AMP/DEA mass concentration ratio is between 0.2 and 0.4. Decreasing gas liquid ratio could greatly promote CO2 absorption, and operating temperature has weak effect on CO2 flux. Besides, large CO2 flux can be achieved with high concentration of DEA+0.2AMP solution due to the decrease of liquid phase resistance to mass transfer, but the optimal DEA concentration was recommended to be about 15% for DEA+0.2AMP solution considering the costs of amines in HFMC.

• Periodical: Advanced Materials Research (Volumes 512-515)
• Pages: 2308-2316
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.512-515.2308
• Online since: May 2012
• Authors: Zhen Wang, Meng Xiang Fang, Shui Ping Yan, Yi Li Pang, Zhong Yang Luo
• Keywords: 2-Amino-2-Methyl-1-Propanol, Absorption, Carbon Dioxide, Diethanolamine, Membrane Contactor

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