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| Application of CFD Technology in Reducing NOx Emission from Exhaust Gas of Rotary Anode Furnace |
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Received:September 26, 2024
Revised:September 30, 2024
Accepted:October 08, 2024
Published Online:February 21, 2025
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| DOI：doi：10.20237/j.issn.1007-7545.2025.03.012 |
| KeyWord:CFD; anode furnace; nitrogen oxides; entrainment effect |
| Author | Institution |
| YANG Hui |
中铜东南铜业有限公司 |
| YANG Kun |
中铜东南铜业有限公司 |
| LANG Lijie |
中铜东南铜业有限公司 |
| WU Sen |
中铜东南铜业有限公司 |
| XU Shixin |
中铜东南铜业有限公司 |
| WEI Qiong |
中铜东南铜业有限公司 |
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| Abstract: |
| The combustion system of rotary anode furnace for crude copper refining was numerically simulated by CFD technology. Based on the results of the simulation calculations and combined with plant production situations, an improved idea is provided for controlling nitrogen oxides in the flue gas of the rotary anode furnace. The simulation calculations reveal that the nitrogen source introduced by primary combustion air is the main factor to the generation of nitrogen oxides in the rotary anode furnace. Reducing high-temperature zones and controlling the introduction of nitrogen sources can effectively control the nitrogen oxides content in the flue gas. Additionally, both the simulation and control practices indicate that the flow rate of the flame gas inside the furnace will increase the air leakage at the furnace mouth due to the entrainment effect, so as to increase the nitrogen oxides in the flue gas, and the return of the flame gas in the furnace can reduce the gas flow rate, so as to reduce the generation of nitrogen oxides through reducing air leakage. |
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