CFD技术在降低回转式阳极炉烟气NO_(x)研究中的应用  

Application of CFD Technology in Reducing NO_(x)Emission from Exhaust Gas of Rotary Anode Furnace

作　　者：杨辉 杨堃 郎立杰 吴森 徐世鑫 韦琼 YANG Hui;YANG Kun;LANG Lijie;WU Sen;XU Shixin;WEI Qiong(China Copper Southeast Copper Co.,Ltd.,Ningde 352000,Fujian,China)

机构地区：[1]中铜东南铜业有限公司,福建宁德352000

出　　处：《有色金属(冶炼部分)》2025年第3期84-90,共7页Nonferrous Metals(Extractive Metallurgy)

摘　　要：利用CFD技术对粗铜精炼的回转式阳极炉的燃烧系统进行数值仿真计算,根据仿真计算结果并结合实际生产情况对回转式阳极炉烟气中的氮氧化物的控制提供了改进思路。经仿真计算可知:一次燃烧风引入的氮源是回转式阳极炉氮氧化物生成的主要因素,减少高温区和控制氮源引入可有效控制烟气氮氧化物的含量。仿真和控制实践表明,炉内焰气流速会因卷吸效应增加炉口漏风,从而增加烟气氮氧化物,炉内焰气回流可降低烟气流速,从而减少漏风来降低氮氧化物的生成。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.

关 键 词：CFD 阳极炉 氮氧化物 卷吸效应 

分 类 号：TF811[冶金工程—有色金属冶金]