基于空气分级燃烧钢包烘烤器加热过程的数值研究  

Numerical Study on the Heating Process of Ladle Roaster Based on Air-staged Combustion

作　　者：张依琳 郝兆龙 薄守石[2] 郝婷婷 ZHANG Yilin;HAO Zhaolong;BO Shoushi;HAO Tingting(Beijing Ruichen Aerospace Energy Technology Co.Ltd.,Beijing 100083,China;School of Chemistry and Chemical Engineering,China University of Petroleum(East China),Qingdao 266580,China;School of Chemical Engineering,Dalian University of Technology,Dalian 116024,China)

机构地区：[1]北京瑞晨航宇能源科技有限公司,北京100083 [2]中国石油大学(华东)化学化工学院,山东青岛266580 [3]大连理工大学化工学院,辽宁大连116024

出　　处：《工业加热》2024年第10期9-13,19,共6页Industrial Heating

摘　　要：空气分级燃烧技术已被广泛证实能够有效提升各类燃烧器的加热性能,同时降低NO_(x)的排放。为研究空气分级燃烧技术在钢包烘烤器中的应用效果,设计了一种用于钢包烘烤的空气分级燃烧器,采用CFD软件进行了模拟仿真,得到了该燃烧器的钢包烘烤效果;同时通过对比分析未分级的钢包烘烤器和具有空气分级结构的钢包烘烤器在相同烘烤条件下,钢包内的各处温度分布、速度分布,烘烤质量及NO_(x)生成等,证明了空气分级技术能够使钢包烘烤器内燃料充分燃烧、提高钢包加热温度和均匀性、从而缩短烘烤时间;由于钢包内温度分布均匀,无局部高温,所以相较于不分级的燃烧器,空气分级的钢包烘烤器具有更低的NO_(x)排放。空气分级结构的钢包烘烤器的提出为新型钢包烘烤器的设计提供了新的研究思路,对于实际生产应用具有重大意义。The air staged combustion technology has been widely proven to effectively improve the heating performance of various burners while reducing NO_(x)emissions.To study the application effect of air staged combustion technology in ladle roasters,this paper designs an air staged burner for ladle baking,and simulates it using CFD software to obtain the ladle baking effect of the burner;at the same time,by comparing and analyzing the temperature distribution,velocity distribution,baking quality,and NO_(x) generation inside the ladle under the same baking conditions between an ungraded ladle roaster and a ladle roaster with an air grading structure,it has been proven that air grading technology can fully burn the fuel inside the ladle roaster,improve the heating temperature and uniformity of the ladle,and thus shorten the baking time;due to the uniform temperature distribution inside the ladle and the absence of localized high temperatures,air graded ladle roasters have lower NO_(x)emissions compared to non graded burners.The proposal of an air classification structure for ladle roasters provides a new research ap-proach for the design of new ladle roasters,which is of great significance for practical production applications.

关 键 词：空气分级 钢包烘烤器 高效节能 NO_(x)排放 

分 类 号：TK121[动力工程及工程热物理—工程热物理]