ISSN:1003-8620

CN:42-1243/TF

主管:中信泰富特钢集团股份有限公司

主办:大冶特殊钢有限公司

特殊钢 ›› 2008, Vol. 29 ›› Issue (5): 19-22.

• 试验研究 • 上一篇    下一篇

AOD蓄热式烘烤过程热行为与NO排放的数值模拟

袁玲1,朱苗勇1,陈洁2   

  1. 1. 东北大学材料与冶金学院,沈阳 110004 ;
    2. 宝山钢铁股份有限公司不锈钢分公司,上海 201900;
  • 收稿日期:2008-03-10 出版日期:2008-10-01 发布日期:2023-01-04
  • 作者简介:袁 玲(1978-),女,博士研究生,2005年东北大学硕士毕业.冶金设备烘烤,燃烧过程数值仿真。

Numerical Simulation of Thermal Behavior and NO Emission in AOD with Regenerative Baking

Yuan Ling1 , Zhu Miaoyong1  , Chen Jie2   

  1. 1. School of Materials and Metallurgy, Northeastern University, Shenyang 110004 ;
    2. Stainless Steel Branch of Baosteel, Shanghai 201900 ;
  • Received:2008-03-10 Published:2008-10-01 Online:2023-01-04

摘要: 采用新型AOD蓄热式烘烤器对120 t AOD设备烘烤过程炉内温度分布和NO排放量进行了数值模拟,分析了空气预热温度(1273~1473 K)、空气进口与燃气人口间的相对距离L(0.28~0.51 m)对流场、温度场和NO排放的影响。结果表明,随L值增加,炉内最高温度下降,气体温度均匀性提高,NO生成量降低;空气预热温度提高,炉内气体温度升高,反应区NO含量升高。空气预热温度1273 K即可满足要求。

关键词: AOD, 蓄热式烘烤, 温度分布, NO排放量, 数值模拟

Abstract: The numerical simulation of temperature distribution and NO emission in furnace during baking of an 120 t AOD unit by using new regenerative baker for AOD has been carried out. And the effects of temperature of preheated air (1273~1473 K) and distance L between air inlet and fuel gas jet (0.28~0.51m) on flow field, temperature field and NO emission are analyzed. Results show that with increasing L value, the highest temperature in furnace decreases, the temperature difference of gas decreases and the amount of generating NO decreases ; with increasing preheated temperature, the temperature of gas in furnace increases and the NO content in reacting region increases. It shall meet the requirement for preheated temperature of air being 1273 K.

Key words: AOD, Regenerative Baking, Temperature Distribution, NO Emission, Numerical Simulation