[1]杨 潘,陈延信,*,等.内外风量比对回转窑内烟气流场及其温度分布影响的研究[J].西安建筑科技大学学报(自然科学版),2018,50(05):749-0754.[doi:10.15986/j.1006-7930.2018.05.020]
　YANG Pan,CHEN Yan xin*,ZHAO Bo.Research t he effect of internal air volume ratio on gas flow field and temperature distribution within rotary kilns[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2018,50(05):749-0754.[doi:10.15986/j.1006-7930.2018.05.020]
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内外风量比对回转窑内烟气流场及其温度分布影响的研究()
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西安建筑科技大学学报（自然科学版）[ISSN:1006-7930/CN:61-1295/TU]

卷:
50
期数:
2018年05期
页码:
749-0754
栏目:
出版日期:
2018-10-28

文章信息/Info

Title:
Research t he effect of internal air volume ratio on gas flow field and temperature distribution within rotary kilns
文章编号:
1006-7930(2018)05-0749-06
作者:
杨 潘1; 陈延信2; 3; *; 赵 博3
西安建筑科技大学 华清学院,陕西 西安 710043 ,2.西部建筑科技国家重点实验室(筹)，陕西 西安710055，3.西安建筑科技大学 粉体工程研究所，陕西 西安 710055)）
Author(s):
YANG Pan1 ;  CHEN Yan xin2; 3*;  ZHAO Bo 3
( 1. Hua Qing College , X ian Univ. of Arch. & Tech., Xian 710043, China; 2.State Key Laboratory of Architecture Science and Technology in West China(XAUAT), Xian 710055,China; 3. Institute of Powder Engineering, Xian Univ. of Arch. & Tech., Xian 710055, China)
关键词:
回转窑;  温度场; 内外风量比; 烟气
Keywords:
rotary kiln;  temperature field;  internal air volume ratio;  flue gas
分类号:
TQ170.2
DOI:
10.15986/j.1006-7930.2018.05.020
文献标志码:
A
摘要:
通过研究内外风量比对回转窑内火焰形状、烟气流场及其温度分布的影响，为优化燃烧器的操作参数提供依据。以一四风道煤粉燃烧器及Φ4 m ×60 m的回转窑为对象，应用Fluent软件，建立了k-ε湍流模型，煤粉燃烧模型和辐射换热模型。研究了以煤粉为燃料，内外风量比分别为0.37、0.47、0.6和0.8时，回转窑内火焰形状、烟气流场及温度分布情况。结果表明，内外风量比为0.47时，回转窑内火焰形状成良好的棒槌状，火焰高温区达到2 000 K，火焰温度分布符合水泥熟料煅烧的要求。计算给出了最佳条件下，沿窑长方向上的O2、CO、CO2的摩尔浓度分数分布，计算分析了喷煤管出口附近的内回流区和窑壁附近的外回流区，表明了在最佳操作参数条件下窑内流场分布和气体浓度场分布的合理性。
Abstract:
Pulverized coal combustion in rotary kiln provides heat for cement clinker calcination . The effects of internal air volume ratio on the flame shape, gas flow field and temperature distribution were carried out, which provides the basis of optimization operation and structure parameter for burner. Accordingly, a rotary kiln with the length of 60 m and the diameter of 4 m using pulverized coal burner is investigated. With the Fluent software, the turbulence model, the pulverized coal combustion model and radiation heat transfer model were established . When the internal air volume ratios were 0.37, 0.47 , 0.6 and 0.8, respectively, the flame performance , gas flow and temperature distribution in rotary kiln with a pulverized coal as fuel were analyzed. The results show that, when the internal air volume ratio is 0.47, it will get the good flame shape and the flame temperature can reach 2 000 K within the rotary kiln, and flame temperature distribution meets the requirements of cement clinker calcination. Under the given best conditions, obtain the mole fraction profiles of O2, CO, and CO2 along the length direction of the kiln. Analyze the inner recirculation zone near the outlet of the burner and outer recirculation zone near the kiln wall, which shows that the flow field and the gas concentration are reasonable under the best operating parameters

参考文献/References:

References

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备注/Memo

备注/Memo:
收稿日期：2017-11-22 修改稿日期：2018-08-28基金项目：国家重点研发计划资助（2016YFB0303402）作者简介：杨 潘(1986－)，女，博士生，主要研究硅酸盐水泥及耐火材料的制备与研究．E-mail:421437483@qq.com
更新日期/Last Update: 2018-11-22