| Summary: | 碩士 === 國立臺灣大學 === 化學工程學研究所 === 104 === In this study, a two-dimensional mass transfer model is developed to simulate the carbon dioxide transport for the hollow fiber membrane contactor in which mixed piperazine (PZ) and 2-amino-2-methyl-1-propanol (AMP) as the chemical absorbent is used. The model is developed for non-wetted conditions, taking into account radial and axial diffusion, convection, and chemical reaction in the membrane contactor. The simulation results for chemical absorption of carbon dioxide in AMP/PZ blended solution are summarized as below.
The validation of the physical model compared with the experimental result of carbon dioxide absorption flux is good agreement. The carbon dioxide concentration along the length of the module with respect to different values of gas flow rates, liquid flow rates, chemical absorbent concentration, and module length can be taken into account. Carbon dioxide absorption from the gas mixture increases while the liquid flow rates, chemical absorbent concentration, and module length going up. On the other hand, increase of gas flow rates reduces removal of carbon dioxide. The proposed mathematical model can predict carbon dioxide capture from gas mixtures in HFMCs. Through computer simulation, thereby reducing the cost of experiments.
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