文献类型：期刊文献

中文题名：热镀锌机组退火炉节能优化的数值模拟

英文题名：Numerical simulation of energy saving optimization for annealing furnace of hot-dip galvanizing unit

作者：方瑞[1];吴亭亭[1]

机构：[1]华东理工大学煤气化及能源化工教育部重点实验室

年份：2019

卷号：44

期号：8

起止页码：252

中文期刊名：金属热处理

外文期刊名：Heat Treatment of Metals

收录：CSTPCD;;Scopus;北大核心:【北大核心2017】；CSCD:【CSCD2019_2020】；

语种：中文

中文关键词：直燃加热段;空燃比;空气预热温度;操作参数优化;数值模拟

外文关键词：direct-fired section(DFS);air-fuel ratio;air preheating temperature;operational parameter optimization;numerical simulation

摘要：针对某钢铁公司热镀锌机组退火炉直燃加热段(DFS)内复杂的燃烧、流动、传热过程与其操作参数的关系,利用CFD技术进行建模与仿真计算,研究了烧嘴的空燃比与空气预热温度对炉内组分浓度场与温度场的影响。模拟结果表明,直燃加热段空燃比在4. 0及以下,炉段内的还原性气氛符合生产工艺的要求;模拟找出了与试验工况截面温度一致的几组优化组合操作参数(空燃比/空气预热温度),分别为3. 7/720 K、3. 8/600 K、3. 9/450 K和4. 0/300 K,此时DFS出口及中心截面的平均温度与试验工况的3. 5/600 K一致,其中4. 0/300 K工况下,煤气用量减少11. 88%,节约能源明显。
Aiming at the relationship between complex combustion,flow and heat transfer and the operating parameters in the direct-fired heating section(DFS)of a hot-dip galvanizing unit,the CFD technology was used to model and simulate the effects of varied air-fuel ratio and air preheating temperature on concentration filed of the components and temperature distribution.The results show that keeping air-fuel ratio of direct-fired section as 4.0 or lower can meet the atmosphere requirements of production process.Several sets of combined operating parameters are optimized,i.e.air-fuel ratio to the air preheating temperature,they are air-fuel ratio and the air preheating temperature are3.7/720 K,3.8/600 K,3.9/450 K and 4.0/300 K.Therefore,the average temperature of DFS outlet and central cross-section is consistent with the test condition of 3.5/600 K,of which,under the 4.0/300 K operating conditions,the gas consumption can be decreased by 11.88%,saving energy significantly.