Numerical Investigation of Capture Behavior in Tubular Carbon Capture Device

• Main Authors: Lin, Yu-Teng, 林宇騰
• Other Authors: Chen, Chiun-Hsun
• Format: Others
• Language: zh-TW
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/4se54p

碩士 === 國立交通大學 === 機械工程系所 === 106 === In this research it is focused on employing the numerical simulation tool to facilitate the design optimization on the capture device. The ANSYS / FLUENT software is adopted to investigate the physical adsorption and flow field details. Under the design constrain with the same volume of adsorbent used, three different layouts are examined in the study. In the best case of activated carbon, The mass fraction of CO2 at the inlet velocity of 0.001 m/s dropped to zero at 270 seconds, and the adsorbent of zeolite dropped to zero at 500 seconds. In the catalytic converter case, the inlet velocity were set to 0.001, 0.1, and 1m/s, it is found that the residence time of the exhaust flow is the dominant factor of the capture efficiency. All the results showed that the faster the inlet velocity, the worse the adsorption capacity. In order to improve this phenomenon, it is necessary to install a gas deceleration device at the end of the exhaust pipe in the future study. However, the performance of zeolite is much lower than the expected value.