摘要
为了减少玻璃熔窑在燃料燃烧过程中产生的NO_(x),针对一燃重油的空气助燃浮法玻璃熔窑建立模型进行了数值模拟。在保证助燃气体总氧量不变的条件下,通过减少助燃空气用量并补充等量氧气的方式来进行全氧助燃梯度燃烧,对助燃空气量分别减量6%和8%时的两种工况进行了对比研究。结果表明:当空气减少量由6%提高至8%时,一方面,火焰空间的总热通量和玻璃液面热通量相对更高,分别提高了0.86%和0.63%;另一方面,CO的生成量更多,且因N_(2)的减少量更多,最终使得火焰空间中NO_(x)的生成量更低,其中小炉出口处NO_(x)排放量降低了3.64%。
In order to reduce the NO_(x)produced in the fuel combustion process of the glass melting furnace,aiming at a heavy oil-burning air-assisted float glass melting furnace,a numerical simulation was carried out.Ensuring the same amount of oxygen consumption,the oxygen gradient combustion process was studied by reducing the amount of combustion air and supplementing the same amount of oxygen.A comparative study was carried out when the amount of combustion supporting air was reduced by 6%and 8%,respectively,in order to obtain a better scheme.The research results show that when the air reduction increases from 6%to 8%,on the one hand,the total heat flux of the flame space and the heat flux of the glass liquid surface are relatively higher,increasing by 0.86%and 0.63%,respectively.On the other hand,the amount of CO generated is more,and because the amount of reduction of N_(2)is more,the generation of NO_(x)in the combustion space is finally lower,and the average NO_(x)emission at the outlet is reduced by 3.64%.
作者
梅书霞
何峰
王志敏
金明芳
杨虎
范云飞
谢峻林
MEI Shu-xia;HE Feng;WANG Zhi-min;JIN Ming-fang;YANG Hu;FAN Yun-fei;XIE Jun-lin(School of Materials Science and Engineering,Wuhan University of Technology,Wuhan 430070,China)
出处
《武汉理工大学学报》
CAS
2021年第7期1-7,共7页
Journal of Wuhan University of Technology
基金
“十三五”国家重点研发计划国家科技支撑计划(2017YFC0210802)
关键词
浮法玻璃
梯度增氧燃烧
数值模拟
减排NO_(x)
float glass
gradient oxygenation combustion
numerical simulation
NO_(x)emission reduction
