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过程工程学报 ›› 2020, Vol. 20 ›› Issue (6): 737-744.DOI: 10.12034/j.issn.1009-606X.219278

• 环境与能源 • 上一篇    

浮法玻璃熔窑火焰空间石油焦部分替代重油燃烧的数值模拟

王志敏, 谢峻林, 梅书霞*, 何 峰, 金明芳   

  1. 武汉理工大学材料科学与工程学院,湖北 武汉 430070
  • 收稿日期:2019-08-12 修回日期:2019-10-26 出版日期:2020-06-22 发布日期:2020-06-19
  • 通讯作者: 梅书霞
  • 基金资助:
    国家重点研发计划

Numerical simulation of combustion process of petroleum coke partially substituting heavy oil in combustion space of float glass furnace

Zhimin WANG, Junlin XIE, Shuxia MEI*, Feng HE , Mingfang JIN   

  1. School of Material Science and Engineering, Wuhan University of Technology, Wuhan, Hubei 430070, China
  • Received:2019-08-12 Revised:2019-10-26 Online:2020-06-22 Published:2020-06-19

摘要: 针对浮法玻璃熔窑火焰空间建立模型并进行了数值模拟,在保证热值相同的前提下,对比研究了重油燃烧及将石油焦部分替代重油燃烧时的流场分布特征。结果表明,石油焦部分代替重油燃烧后,两种燃料可很好地混合燃烧,窑炉内温度制度基本不受影响;石油焦着火时间比重油长,两种燃料混合燃烧时平均着火点滞后于仅使用重油时,且燃烧路径更长,燃烧时产生了大量CO,整个火焰空间及烟气出口处NOx的平均排放量与仅使用重油相比降低了30.02%,NOx减排效果明显。

关键词: 浮法玻璃, 火焰空间, 数值模拟, 重油, 石油焦, 共燃, NOx

Abstract: The numerical simulation in the combustion space of a float glass furnace was carried out. Under the premise of ensuring the same fuel calorific value, the flow field distribution characteristic of heavy oil combustion and co-combustion of petroleum coke and heavy oil was studied. The results showed that the two fuels can co-fire well, and the temperature system in the furnace was basically unaffected. In contrast, the petroleum coke's ignition time was longer than that of the heavy oil, so the average ignition point of the fuel during co-combustion lags behind when only heavy oil was used and the flame was longer. When the fuel was co-firing, more O2 was needed, the combustion was not enough, and a large amount of CO was generated. Finally, the total NOx emission at the flue gas outlet was reduced by 30.02% compared with the case using heavy oil only, and the NOx emission reduction effect was obvious.

Key words: float glass furnace, combustion space, numerical simulation, heavy oil, petroleum coke, co-burning, NOx