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水泥预分解炉内流场及温度场的数值模拟

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蔡鑫, 马永亮. 水泥预分解炉内流场及温度场的数值模拟[J]. 环境工程学报, 2014, 8(10): 4349-4354.
引用本文: 蔡鑫, 马永亮. 水泥预分解炉内流场及温度场的数值模拟[J]. 环境工程学报, 2014, 8(10): 4349-4354.
shu
Cai Xin, Ma Yongliang. Numerical simulation of flow and temperature field in a cement precalciner[J]. Chinese Journal of Environmental Engineering, 2014, 8(10): 4349-4354.
Citation: Cai Xin, Ma Yongliang. Numerical simulation of flow and temperature field in a cement precalciner[J]. Chinese Journal of Environmental Engineering, 2014, 8(10): 4349-4354.
shu

水泥预分解炉内流场及温度场的数值模拟

  • 1.

    清华大学环境学院, 国家环境保护大气复合污染来源与控制重点实验室, 北京 100084

  • 基金项目:

    国家“863”高技术研究发展计划项目（2012AA062503）

  • 中图分类号: X511

Numerical simulation of flow and temperature field in a cement precalciner

  • 1.

    State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex, School of Environment, Tsinghua University, Beijing 100084, China

  • Fund Project:

  • 摘要: 以某水泥厂分解炉为研究对象，采用CFD数值模拟方法，模拟了分解炉内气相流、气固两相流、煤粉燃烧和生料分解，分析现有分解炉内流场、颗粒相和温度场的分布情况。结果表明，该水泥厂分解炉只有一个三次风进口导致炉内流场分布不均匀，物料分散性不好，炉内温度分布不均匀，可采用错落式格局确定SNCR还原剂喷嘴位置，喷嘴位置应安装在20 m高度以上。基于模拟结果，提出分解炉改进方案，对称增加一个三次风进口。改进后炉内流场和温度场分布均匀，颗粒相的分散性得到改善。对结构对称式分解炉可采用同平面格局确定SNCR喷嘴位置。
    Abstract: Gas phase flow,gas-solid phase flow,pulverized coal combustion and raw material decomposition inside the precalciner of a cement plant were simulated by means of computational fluid dynamics.And the distribution of the flow and temperature field,particle phase was analyzed.The results indicate that the distribution of the flow and temperature field is asymmetry and the material dispersion is poor inside this precalciner due to only one tertiary air inlet.For this precalciner,the bilevel-pattern should be used to determine the SNCR reductant nozzle locations with a height over 20 m.Based on the above results,an improved scheme was presented by symmetrically adding a tertiary air inlet.Results show that a better distribution of the flow and temperature field is obtained and the material disperses well.The nozzle locations of SNCR can be determined using planar-pattern for this symmetric precalciner.
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  • [1] Lei Yu,Zhang Qiang,Nielsen C.,et al.An inventory of primary air pollutants and CO2 emissions from cement production in China,1990-2020.Atmospheric Environment,2011,45(1):147-154
    [2] Huang Lai,Lu Jidong,Hu Zhijuan,et al.Numerical simulation and optimization of NO emissions in a precalciner.Energy & Fuels,2006,20(1):164-171
    [3] Nguyen T.D.B.,Kang T.H.,Lim Y.I.,et al.Application of urea-based SNCR to a municipal incinerator:On-site test and CFD simulation.Chemical Engineering Journal,2009,152(1):36-43
    [4] Furrer J.,Deuber H.,Hunsinger H.,et al.Balance of NH3 and behavior of polychlorinated dioxins and furans in the course of the selective non-catalytic reduction of nitric oxide at the TAMARA waste incineration plant.Waste Management,1998,18(6-8):417-422
    [5] 李祥东.分解炉内燃烧与分解的CFD技术应用研究.南京:南京工业大学硕士学位论文,2003 Li Xiangdong.Application of CFD technology to combustion and decomposition in precalciners.Nanjing:Master Dissertation of Nanjing University of Technology,2003(in Chinese)
    [6] 叶旭初,胡道和.SLC分解炉内燃烧、分解的数值模拟研究.硅酸盐学报,1994,22(4):325-330 Ye Xuchu,Hu Daohe.Numerical simulation of combustion and decomposition in SLC calciner.Journal of the Chinese Ceramic Society,1994,22(4):325-330(in Chinese)
    [7] 李昌勇,金春强,胡道和.SLC-S分解炉气固两相运动规律研究.燃烧科学与技术,2003,9(3):239-243 Li Changyong,Jin Chunqian,Hu Daohe.Synthetic study of the motion patterns of gas and solid phases in SLC-S calciner.Journal of Combustion Science and Technology,2003,9(3):239-243(in Chinese)
    [8] Huang Lai,Lu Jidong,Xia Fan,et al.3-D mathematical modeling of an in-line swirl-spray precalciner.Chemical Engineering and Processing:Process Intensification,2006,45(3):204-213
    [9] 黄来,陆继东,李昌军,等.双喷腾分解炉内气固两相流场的数值模拟.硅酸盐学报,2003,31(8):748-753 Huang Lai,Lu Jidong,Li Changjun,et al.Numerical simulation of the gas-solid two-phase flow in double-sprayed precalciner.Journal of the Chinese Ceramic Society,2003,31(8):748-753(in Chinese)
    [10] 王家楣,肖国权.分解炉内煤粉燃烧和CaCO3分解流场的数值模拟.海军工程大学学报,2005,17(2):8-11 Wang Jiamei,Xiao Guoquan.Numerical simulation for flow of combustion of coal and decomposition of CaCO3 in a precalciner.Journal of Naval University of Engineering,2005,17(2):8-11(in Chinese)
    [11] 梅书霞.水泥分解炉结构参数优化与煤粉燃烧的数值模拟.武汉:武汉理工大学博士学位论文,2008 Mei Shuxia.Numerical simulations of gas-solid flow field and coal combustion in precalciners of cement industry for optimization.Wuhan:Doctor Dissertation of Wuhan University of Technology,2008(in Chinese)
    [12] 张三梅.DD分解炉分级燃烧减排NOx的数值模拟及优化研究.武汉:武汉理工大学硕士学位论文,2012 Zhang Sanmei.Numerical simulation of low-NOx staging combustion and optimization research in DD precalciner.Wuhan:Master Dissertation of Wuhan University of Technology,2012(in Chinese)
    [13] Black S.,Szuhánszki J.,Pranzitelli A.,et al.Effects of firing coal and biomass under oxy-fuel conditions in a power plant boiler using CFD modelling.Fuel,2013,113:780-786
    [14] Li Z.Q.,Wei F.,Jin Y.Numerical simulation of pulverized coal combustion and NO formation.Chemical Engineering Science,2003,58(23-24):5161-5171
    [15] Chen L.,Ghoniem A.F.Development of a three-dimensional computational slag flow model for coal combustion and gasification.Fuel,2013,113:357-366
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  • 收稿日期:  2014-03-01
  • 刊出日期:  2014-09-28
蔡鑫, 马永亮. 水泥预分解炉内流场及温度场的数值模拟[J]. 环境工程学报, 2014, 8(10): 4349-4354.
引用本文: 蔡鑫, 马永亮. 水泥预分解炉内流场及温度场的数值模拟[J]. 环境工程学报, 2014, 8(10): 4349-4354.
shu
Cai Xin, Ma Yongliang. Numerical simulation of flow and temperature field in a cement precalciner[J]. Chinese Journal of Environmental Engineering, 2014, 8(10): 4349-4354.
Citation: Cai Xin, Ma Yongliang. Numerical simulation of flow and temperature field in a cement precalciner[J]. Chinese Journal of Environmental Engineering, 2014, 8(10): 4349-4354.
shu

水泥预分解炉内流场及温度场的数值模拟

  • 1. 清华大学环境学院, 国家环境保护大气复合污染来源与控制重点实验室, 北京 100084
  • 收稿日期:  2014-03-01
基金项目:

国家“863”高技术研究发展计划项目（2012AA062503）

摘要: 以某水泥厂分解炉为研究对象，采用CFD数值模拟方法，模拟了分解炉内气相流、气固两相流、煤粉燃烧和生料分解，分析现有分解炉内流场、颗粒相和温度场的分布情况。结果表明，该水泥厂分解炉只有一个三次风进口导致炉内流场分布不均匀，物料分散性不好，炉内温度分布不均匀，可采用错落式格局确定SNCR还原剂喷嘴位置，喷嘴位置应安装在20 m高度以上。基于模拟结果，提出分解炉改进方案，对称增加一个三次风进口。改进后炉内流场和温度场分布均匀，颗粒相的分散性得到改善。对结构对称式分解炉可采用同平面格局确定SNCR喷嘴位置。

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