张平,李雅侠,秦然,吴剑华

• 1:天津大学化工学院
• 2:沈阳化工大学机械工程学院
• 3:沈阳化工大学能源与动力工程学院

摘要(Abstract)：

由于塔体受到横向载荷作用,板式塔的塔板倾斜,塔板上的液体流动发生变化。采用VOF两相流模型,利用计算流体力学(CFD)商用软件FLUENT数值计算了直径0.38 m倾斜塔板上液相的三维流场分布,模拟计算过程中选用塔板上液体持有量作为流动达到准稳态的标准。在不同液体流量和塔板倾斜角度下,对比了塔板上液面高度的模拟计算值和冷模实验塔测量的实验数据,二者吻合较好,说明所建的数学模型可以很好地数值计算倾斜塔板液相的三维流场分布。模拟结果表明,塔板倾斜时,板上液体的回流区中心偏向塔板倾斜方向,与无倾斜的塔板相比,液流方向与塔板倾斜方向相同时的回流区增大,而液流方向与塔板倾斜方向相反时,回流区面积减小。

关键词(KeyWords)： 回流区;计算流体力学;塔板;两相流;气含率

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(21106086,21306115);; 辽宁省教育厅一般项目(L2014165)

作者(Author): 张平,李雅侠,秦然,吴剑华

参考文献(References)：

• [1]Bell R L,Solari R B.Effect of nonuniform velocity fields and retrograde flow on distillation tray efficiency[J].AICh E Journal,1974,20(4):688-695.
• [2]Porter K E,Lockett M J,Lim C T.The effect of liquid channelling on distillation plate efficiency[J].Trans Inst Chem Engrs,1972,50(2):91-97.
• [3]ZHANG Ping(张平),WANG Cui-hua(王翠华),WU Jian-hua(吴剑华).Calculation of top deflection of tray column under working Conditions(板式塔工作状态下塔顶挠度的计算)[J].Chemical Engineering(化学工程),2011,39(8):37-39.
• [4]Kister H Z,Larson K F,P E Madsen.Vapor cross flow channeling on sieve trays[J].Fact or myth.Chem.Eng.Prog.,1992,88(11):86-93.
• [5]HUANG Jie(黄洁),SONG Hai-hua(宋海华),LIU Fu-shan(刘富善).Liquid channelling and its effect on plate efficiency(塔板沟流及其影响)[J].CIESC Journal(化工学报),1996,47(3):311-315.
• [6]LIU Xiu-nan(刘秀囡),LU Xiu-lin(路秀林).Effect of entrainment on tray efficiency of distillation columns(雾沫夹带对蒸馏塔板效率的影响)[J].CIESC Journal(化工学报),1990,41(5):762-767.
• [7]ZENG Ai-wu(曾爱武),LIU Fu-shan(刘福善),XU Song-lin(许松林).Maldistributed weeping from sieve tray(筛板不均匀漏液的规律及其影响)[J].J Chem Eng of Chinese Univ(高校化学工程学报),1996,10(1):80-83.
• [8]Krishna R,Van Baten J M.Simulating the motion of gas bubbles in a liquid[J].Nature,1999,398(6724):208-216.
• [9]WANG Xiao-ling(王晓玲),ZENG Ai-wu(曾爱武),ZHANG Ya-zhi(张雅芝),et al.Simulation of velocity field on sieve-plate flow(筛板塔塔板上流场的模拟)[J].J Chem Eng of Chinese Univ(高校化学工程学报),1998,12(4):393-344.
• [10]YUAN Xi-gang(袁希钢),YOU Xue-yi(尤学一),YU Guo-cong(余国琮).Velocity field simulation of gas-liquid two-phase flow on sieve tray(筛孔塔板气液两相流动的速度场模拟)[J].CIESC Journal(化工学报),1995,46(4):511-515.
• [11]Krishna R,Van Baten J M,Ellenberger J,et al.CFD simulations of sieve tray hydrodynamics[J].Chemical Engineering Research and Design,1999(77):639-646.
• [12]Van Baten J M,Krishna R.Modelling sieve tray hydraulics using computational fluid dynamics.Chemical Engineering Journal,2000,77(3):143-151.
• [13]LIU De-xin(刘德新),LI Xin-gang(李鑫钢),XU Shi-min(徐世民).Simulation flow filed of hydraulics of two phases fluid on sieve tray(筛孔塔板气液两相流流场的数值模拟)[J].Journal of Petrochemical Universities(石油化工高等学校学报),2008,21(1):55-59.
• [14]Hirt C W,Nichols B D.Volume of fluid(VOF)method for the dynamics of free boundaries[J].Journal of computational physics,1981,39(1):201-225.
• [15]GU fang(谷芳),LIU Chun-jiang(刘春江),YU Li-ming(余黎明),et al.The CFD simulation of mass-transfer process in falling film with countercurrent two-phase flow(气-液两相降膜流动及传质过程的CFD研究)[J].J Chem Eng of Chinese Univ(高校化学工程学报),2005,19(4):438-444.
• [16]Lapin A,Lübbert A.Numerical simulation of the dynamics of two-phase gas-liquid flows in bubble columns[J].Chem Eng Sci.,1994,,49(21):3661-3674.
• [17]Lin T J,Reese J,Hong T,et al.Quantitative analysis and computation of two-dimensional bubble columns[J].AICh J,1996,42(2):301-318.
• [18]YU Jiu-yang(喻九阳).Deflection calculation of tower equipment under wind load(风载作用下塔设备的挠度计算)[J].Journal of Wuhan Institute of Technology(武汉化工学院学报),1995,17(4):58-60.
• [19]LIU Bo-tan(刘伯潭).Three dimensional simulation of liquid flow on distillation tray with single-pass and two-pass liquid flow(单、双溢流蒸馏塔板液相流场三维模拟)[D].Tianjin(天津):Tianjin University(天津大学),2001.