| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Energy Technologies and CO2 Management
|
| Presentation Title |
Modeling Carbon Composite Briquette Reaction Under H2-H2O-CO-CO2-N2 Atmosphere |
| Author(s) |
Huiqing Tang, Siyuan Cheng |
| On-Site Speaker (Planned) |
Huiqing Tang |
| Abstract Scope |
Charge carbon composite briquette(CCB) is an effective method to reduce CO2 emissions and save energy in blast furnace(BF) ironmaking. Presently with the hydrogen-bearing gas being injected in the BF, the content of H2 and H2O in the BF gas are comparable to those of CO and CO2, and they could not be ignored in analyzing the CCB reaction behavior in the BF shaft. In this research, a mathematical model was developed for analyzing the reaction behavior of CCB under the H2-H2O-CO-CO2-N2 atmosphere. The model was one-dimensional. Chemical reactions, internal gas diffusion, and mass transfer between the CCB and the atmosphere were considered in the model. Using the model, the influence of gas composition and temperature on CCB reaction was discussed and the reaction progress was investigated. The simulation results showed that increasing temperature or increasing hydrogen in the atmosphere can prompt the reduction of iron oxide and the gasification of carbon in CCB. In the investigated temperature range, Iron oxide reduction by hydrogen and carbon gasification by water vapor played important roles in the CCB reaction process. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Pyrometallurgy, Iron and Steel, Sustainability |