固定床中丝状颗粒的传热传质特性

doi:10.3969/j.issn.0438-1157.2013.08.005

化工学报 ›› 2013, Vol. 64 ›› Issue (8): 2736-2744.DOI: 10.3969/j.issn.0438-1157.2013.08.005

固定床中丝状颗粒的传热传质特性

朱立平^1,2, 袁竹林¹, 闫亚明², 罗登山², 王宏生², 李斌²

1. 东南大学能源热转换及其过程测控教育部重点实验室, 能源与环境学院, 江苏南京 210096;
2. 郑州烟草研究院烟草行业烟草工艺重点实验室, 河南郑州 450001

收稿日期:2012-12-20 修回日期:2013-04-10 出版日期:2013-08-05 发布日期:2013-08-05
通讯作者: 袁竹林
作者简介:朱立平(1984- ),男,博士研究生。
基金资助:
国家重点基础研究发展计划项目(2010CB227002-05);郑州烟草研究院烟草工艺重点实验室基金。

Heat and mass transfer of filamentous particles in a fixed bed

ZHU Liping^1,2, YUAN Zhulin¹, YAN Yaming², LUO Dengshan², WANG Hongsheng², LI Bin²

1. Key Laboratory of Energy Thermal Conversion and Control, Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, Jiangsu, China;
2. Key Laboratory of Tobacco Processing Technology, CNTC, Zhengzhou 450001, Henan, China

Received:2012-12-20 Revised:2013-04-10 Online:2013-08-05 Published:2013-08-05
Supported by:
supported by the National Basic Research Program of China(2010CB227002-05)and the Foundation of Key Laboratory of Tobacco Processing Technology.

摘要/Abstract

摘要： 目前对于固定床中丝状填充颗粒传热传质特性的认识仍处于初始阶段。为了能够从颗粒尺度的微观层面揭示丝状颗粒与气体、颗粒与颗粒之间的热、质传递机理,建立了一种丝状颗粒传热传质数学模型,之后将离散单元法与计算流体力学相结合,对实验中较难获得的床层局部流动及传递信息进行了数值模拟,并着重分析比较了气流入口温度以及表观气速等关键因素对固定床中丝状颗粒温度和含水率变化的影响规律。通过模拟结果与实验数据的对比,验证了所建模型的可行性。研究结果表明:同一时刻,固定床中颗粒温度大体上是随着床层高度的增加而降低,含水率则是随着床层高度的增加而升高;气流入口温度对于固定床中丝状颗粒平均温度的提升起着主导作用,而颗粒的传质速度则受表观气速的影响更为明显。

关键词: 固定床, 丝状颗粒, 传热传质, 数值模拟

Abstract: The knowledge on the heat and mass transfer characteristics of filamentous particles in a fixed bed is preliminary.This paper describes a numerical model for microscopic heat and mass transfer mechanisms between particles and between gas and particles at particle scale.The CFD-DEM coupled approach was employed to numerical study on the local flow and transfer information in the fixed bed,which is difficult to obtain from experiment.The critical factors influencing the temperature and moisture content distribution in a fixed bed such as the air inlet temperature and superficial gas velocity were examined.The model was validated by comparing the simulation results with experimental data.It is concluded that the temperature of filamentous particles reduces and the moisture content of particles increases with the increase of bed height.The air inlet temperature plays a dominant role in the average temperature of the bed,and the mass transfer rate of filamentous particles is affected more obviously by the superficial gas velocity.

Key words: fixed bed, filamentous particle, heat and mass transfer, numerical simulation

中图分类号:

TQ536

朱立平, 袁竹林, 闫亚明, 罗登山, 王宏生, 李斌. 固定床中丝状颗粒的传热传质特性[J]. 化工学报, 2013, 64(8): 2736-2744.

ZHU Liping, YUAN Zhulin, YAN Yaming, LUO Dengshan, WANG Hongsheng, LI Bin. Heat and mass transfer of filamentous particles in a fixed bed[J]. CIESC Journal, 2013, 64(8): 2736-2744.

参考文献 35

[1]	Colburn A P.Heat transfer and pressure drop in empty,baffled and packed tubes[J].Ind.Eng.Chem.,1931, 23:910-915
[2]	Zhu Baolin(朱葆琳),Wang Xuesong(王学松).Heat transfer in packed beds-temperature distribution[J].Journal of Chemical Industry and Engineering(China)(化工学报),1957,1(2):51-72
[3]	Yagi S,Kunii D.Studies on effective thermal conductivities in packed beds[J].AIChE Journal,1957,3(3):373-381
[4]	Schlünder E U.Heat transfer in packed beds[J].Heat and Mass Transfer,1968,1(3):153-158
[5]	Dixon A G,Cresswell D I.Theoretical prediction of effective heat transfer parameters in packed beds[J].AIChE Journal,1979,25(4):663-676
[6]	Wakao N,Kaguei S.Heat and Mass Transfer in Packed Beds[M].New York:Gordon and Breach Science Publishers,1982
[7]	Dixon A G.The length effect on packed bed effective heat transfer parameters[J].Chemical Engineering Journal,1985,31:163-173
[8]	Amiri A,Vafai K.Analysis of dispersion effects and non-thermal equilibrium,non-Darcian,variable porosity incompressible flow through porous media[J].International Journal of Heat and Mass Transfer,1994,37(6):939-954
[9]	Thoméo J C,Freire J T.Heat transfer in fixed bed:a model non-linearity approach[J].Chemical Engineering Science,2000,55(12):2329-2338
[10]	Ferreiraa L M,Castroa J A M,Rodrigues A E.An analytical and experimental study of heat transfer in fixed bed[J].International Journal of Heat and Mass Transfer,2002,45(5):951-961
[11]	Wen D S,Ding Y L.Heat transfer of gas flow through a packed bed[J].Chemical Engineering Science,2006,61(11):3532-3542
[12]	Bauer R,Schlünder E U.Effective radial thermal conductivity of packings in gas flow(Ⅰ):Convective transport coefficient[J].Int.Chem.Eng.,1978a,18:181-188
[13]	Bauer R,Schlünder E U.Effective radial thermal conductivity of packings in gas flow(Ⅱ):Thermal conductivity of the packing fraction without gas flow[J].Int.Chem.Eng.,1978b,18:189-204
[14]	Dixon A G.Heat transfer in fixed beds at very low(Ind.Eng.Chem.Res.,1997,36(8):3053-3064
[15]	Smirnov E I,Muzykantov A V,Kuzmin V A,et al.Radial heat transfer in packed beds of spheres,cylinders and Rashig rings:verification of model with a linear variation of λer in the vicinity of the wall[J].Chemical Engineering Journal,2003,91:243-248
[16]	Gan Lin(甘霖),Xu Maosheng(徐懋生),Zhu Bingchen(朱炳辰).Heat transfer parameters of packed bed with ring pellet[J].Journal of Chemical Industry and Engineering (China)(化工学报),2000,51(6):779-782
[17]	Guo Xueyan(郭雪岩).CFD modeling of heat transfer in fixed bed reactors[J].Journal of Chemical Industry and Engineering(China)(化工学报),2008,59(8):1914-1922
[18]	Nijemeisland M,Dixon A G.Comparison of CFD simulations to experiments for convective heat transfer in a gas-solid fixed bed[J].Chemical Engineering Journal,2001,82:231-246
[19]	Vargas Watson L,Mccarthy J J.Heat conduction in granular materials[J].AIChE Journal,2001,47(5):1052-1059
[20]	Vargas Watson L,Mccarthy J J.Stress effects on the conductivity of particulate beds[J].Chemical Engineering Science,2002,51:3119-3131
[21]	Majid Bahrami,Michael Yovanovich M,Richard Culham J.Effective thermal conductivity of rough spherical packed beds[J].International Journal of Heat and Mass Transfer,2006,49:3691-3701
[22]	Guardo A,Coussirat M,Recasens F,et al.CFD studies on particle-to-fluid mass and heat transfer in packed beds:free convection effects in supercritical fluids[J].Chemical Engineering Journal,2007,62:5503-5511
[23]	Feng Y T,Han K,Li C F,et al.Discrete thermal element modeling of heat conduction in particle system:basic formulations[J].Journal of Computational Physics,2008,227:5072-5089
[24]	Zhou Z Y,Yu A B,Zulli P.Particle scale study of heat transfer in packed and bubbling fluidized beds[J].AIChE Journal,2009,55(4):868-884
[25]	Xia L,Zhang P,Wang R Z,et al.Numerical heat transfer analysis of the packed bed latent heat storage system based on an effective packed bed model[J].Energy,2010,35:2022-2032
[26]	Jian Yang,Wang Qiuwang,Zeng Min,et al. Computational study of forced convective heat transfer in structured packed beds with spherical or ellipsoidal particles[J].Chemical Engineering Journal,2010,65:726-738
[27]	Zhang H W,Zhou Q,Xing H L,et al.A DEM study on the effective thermal conductivity of granular assemblies[J].Powder Technology,2011,205:172-183
[28]	Dixon A G,Gregory Walls,Helen Stanness,et al. Experimental validation of high Reynolds number CFD simulations of heat transfer in a pilot-scale fixed bed tube[J].Chemical Engineering Journal,2012,200:344-356
[29]	Xu B H,Yu A B.Numerical simulation of the gas-solid flow in a fluidized bed by combining discrete particle method with computational fluid dynamics[J].Chemical Engineering Science,1997,52:2785-2809
[30]	Anderson T B,Jackson R.A fluid mechanical description of fluidized beds[J].Ind.Eng.Chem.Fundamen.,1967,6(4):527-539
[31]	Henk Kaarle Versteeg H,Weeratunge Malalasekera.An Introduction to Computational Fluid Dynamics:The Finite Volume Method[M].2nd ed.New York:Prentice Hall,2007
[32]	Patankar S V.Numerical Heat Transfer and Fluid Flow[M].New York:Hemisphere Publishing Corporation,Taylor & Francis Group,1980
[33]	Zhu Liping(朱立平),Yuan Zhulin(袁竹林),Yan Yaming(闫亚明),et al.Model of heat transfer in filamentous granular materials based on discrete element method[J].CIESC Journal(化工学报),2012,63(7):2051-2058
[34]	Culham J R,Yovanovich M M,Teertstra P,et al. Simplified analytical models for forced convection heat transfer from cuboids of arbitrary shape[J].Journal of Electronic Packaging,2001,123:182-188
[35]	Pan Yongkang(潘永康),Wang Xizhong(王喜忠).Modern Drying Technology(现代干燥技术)[M].Beijing:Chemical Industry Press,1998

固定床中丝状颗粒的传热传质特性

Heat and mass transfer of filamentous particles in a fixed bed

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