锂辉石精矿预加热新工艺的数值模拟研究
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摘要
本文利用Euler-Lagrange法对锂精矿在三级旋风预热分离器中的运动和预加热过程进行模拟,并基于涡耗散模型和Realizable k-ε模型研究天然气在回转窑内的湍流流动和燃烧反应,验证利用旋风预热分离器和焙烧回转窑对物料进行预加热的可行性以及相关操作参数的合理性,为工程设计项目提供参考和依据。
In this paper, the Euler-Lagrange method is used to simulate the movement and preheating process of lithium concentrate in a three-stage cyclone preheating separator. The turbulent flow of natural gas in the rotary kiln is studied based on the eddy dissipation model and the Realizable k-ε model. The combustion reaction verifies the feasibility of using the cyclone preheating separator and the roasting rotary kiln to preheat the materials and the rationality of the relevant operating parameters, and provides reference and basis for the engineering design project.
In this paper, the Euler-Lagrange method is used to simulate the movement and preheating process of lithium concentrate in a three-stage cyclone preheating separator. The turbulent flow of natural gas in the rotary kiln is studied based on the eddy dissipation model and the Realizable k-ε model. The combustion reaction verifies the feasibility of using the cyclone preheating separator and the roasting rotary kiln to preheat the materials and the rationality of the relevant operating parameters, and provides reference and basis for the engineering design project.
引文
[1]张佑林,刘伟华,谢尔宾纳.旋风预热器气固两相流场的数值模拟[J].中国水泥,2006,(8):45-47.
[2]陈钰.旋风预热器单体的数值模拟[D].西安:西安建筑科技大学,2006.
[3]丁苏东,宁建根,吴建军,等.NC型6000 t/d规模预热器系统C_1旋风筒分离效率影响因素的数值模拟研究[J].中国水泥,2013,(9):72-75.
[4]吴圣禹.催化裂化装置旋风分离器内流场数值模拟及优化设计研究[D].哈尔滨:哈尔滨工业大学,2016.
[5]金有海,于长录,赵新学.旋风分离器环形空间壁面磨损的数值研究[J].高校化学工程学报,2012,26(2):196-202.
[6] Chu K W, Wang B, Xu D L, et al. CFD-DEM simulation of the gas-solid flow in a cyclone separator[J]. Chemical Engineering Science,2011,66(5):834-847.
[7] Cort6s C, Gil A. Modeling the gas and particle flow inside cyclone separators[J]. Progress in Energy&Combustion Science,2007,33(5):409-452.
[8] Elsayed K, Lacor C. Optimization of the cyclone separator geometry for minimum pressure drop using mathematical models and CFD simulations[J]. Chemical Engineering Science,2010,65(22):6048-6058.
[9]曹晴云,姬广勤,金有海,等.不同结构参数下旋风分离器气相流场的数值研究[J].流体机械,2008,36(6):34-38.
[10]陈作炳,陈思维,豆海建,等.五级旋风预热器冷模单体流场数值研究[J].武汉理工大学学报,2005,27(5):56-58.
[11]陈作炳,李硕,李丽君.用DPM模型模拟预热器内两相流场研究[J].机械工程与自动化,2007,(2):51-52.
[12]游清冶.锂辉石的转型焙烧[J].新疆有色金属,1991(1):27-32.
[13]李忠,李环.对焙烧酸化浸出过程中锂辉石收率的研究[J].江西化工,2016,(6):84-85.
[14]陈悦娣.不同产地锂精矿的分析研究及工业应用[J].新疆有色金属,2014,37(1):62-64.
[15]孙铭阳,韦鲁滨,朱学帅,等.液固分选流化床三相流场模拟中各粘性流动模型的适用性[J].过程工程学报,2016,16(1):10-17.
[16] V Y, A 0 S. Renormalization Group Analysis of Turbulence. I. Basic Theory[J]. Journal of Scientific Computing, 1986,1(1):3-51.
[17] Shih T H, Liou W W, Shabbir A, et al. A new k-eddy viscosity model for high reynolds number turbulent flows[J].Computers Fluids, 1995,24(3):227-238.
[18] Saffman P G. The Lift on a Sphere in a Slow Shear Flow[J]. Journal of Fluid Mechanics, 1965,22(2):385-400.
[19] Si R,Jb K. The transverse force on a spinning sphere moving in a viscous fluid[J]. Journal of Fluid Mechanics,1961,11(3):447-459.
[2]陈钰.旋风预热器单体的数值模拟[D].西安:西安建筑科技大学,2006.
[3]丁苏东,宁建根,吴建军,等.NC型6000 t/d规模预热器系统C_1旋风筒分离效率影响因素的数值模拟研究[J].中国水泥,2013,(9):72-75.
[4]吴圣禹.催化裂化装置旋风分离器内流场数值模拟及优化设计研究[D].哈尔滨:哈尔滨工业大学,2016.
[5]金有海,于长录,赵新学.旋风分离器环形空间壁面磨损的数值研究[J].高校化学工程学报,2012,26(2):196-202.
[6] Chu K W, Wang B, Xu D L, et al. CFD-DEM simulation of the gas-solid flow in a cyclone separator[J]. Chemical Engineering Science,2011,66(5):834-847.
[7] Cort6s C, Gil A. Modeling the gas and particle flow inside cyclone separators[J]. Progress in Energy&Combustion Science,2007,33(5):409-452.
[8] Elsayed K, Lacor C. Optimization of the cyclone separator geometry for minimum pressure drop using mathematical models and CFD simulations[J]. Chemical Engineering Science,2010,65(22):6048-6058.
[9]曹晴云,姬广勤,金有海,等.不同结构参数下旋风分离器气相流场的数值研究[J].流体机械,2008,36(6):34-38.
[10]陈作炳,陈思维,豆海建,等.五级旋风预热器冷模单体流场数值研究[J].武汉理工大学学报,2005,27(5):56-58.
[11]陈作炳,李硕,李丽君.用DPM模型模拟预热器内两相流场研究[J].机械工程与自动化,2007,(2):51-52.
[12]游清冶.锂辉石的转型焙烧[J].新疆有色金属,1991(1):27-32.
[13]李忠,李环.对焙烧酸化浸出过程中锂辉石收率的研究[J].江西化工,2016,(6):84-85.
[14]陈悦娣.不同产地锂精矿的分析研究及工业应用[J].新疆有色金属,2014,37(1):62-64.
[15]孙铭阳,韦鲁滨,朱学帅,等.液固分选流化床三相流场模拟中各粘性流动模型的适用性[J].过程工程学报,2016,16(1):10-17.
[16] V Y, A 0 S. Renormalization Group Analysis of Turbulence. I. Basic Theory[J]. Journal of Scientific Computing, 1986,1(1):3-51.
[17] Shih T H, Liou W W, Shabbir A, et al. A new k-eddy viscosity model for high reynolds number turbulent flows[J].Computers Fluids, 1995,24(3):227-238.
[18] Saffman P G. The Lift on a Sphere in a Slow Shear Flow[J]. Journal of Fluid Mechanics, 1965,22(2):385-400.
[19] Si R,Jb K. The transverse force on a spinning sphere moving in a viscous fluid[J]. Journal of Fluid Mechanics,1961,11(3):447-459.