| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Energy Technologies and CO2 Management
|
| Presentation Title |
Research on Using Carbide Slag to Mineralize the Carbon Dioxide in Electrolytic Aluminum Waste Gas |
| Author(s) |
Xiao Yadong, Liu Yan, Ting-an Zhang, Fang Yu, Li Xiaolong, Wang Kun |
| On-Site Speaker (Planned) |
Xiao Yadong |
| Abstract Scope |
This study proposes the technology of using waste carbide slag to treat carbon dioxide in the tail gas of electrolytic aluminum, and innovatively designs a Venturi gas-liquid-solid three-stage reactor. The results show that the residual proportion of CO2 in the waste gas is below 0.08% through the absorption of three stage reactor, and the time of absorption can be largely shorten compared with the single stage reactor. As the gas velocity increases, the volumetric mass transfer coefficient gradually increases, and the CO2 utilization rate, average bubble diameter, bubble rising speed, and local gas holdup all decrease first and then increase. As the apparent liquid velocity increases, the volumetric mass transfer coefficient and CO2 utilization rate reach their maximum values at a liquid velocity of 1.504 m/s. The average diameter of bubbles first decreases and then increases, while the rising speed of bubbles and local gas holdup show an opposite trend. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Modeling and Simulation, Recycling and Secondary Recovery, |