HEAT SINK CFD MODEL OF COUNTER-CURRENT SPRAY DRYING PROCESS
An intensive agglomeration which occurs in the counter-current spray towers makes modeling of the process difficult as there is no theory to predict transition of particle size distribution from a unique methodology of CFD modeling of heat and mass transfer during counter-current spray drying process based on the concept of a negative heat source reflecting power necessary for evaporation of water during spray drying process.The volumetric internal heat source term in Navier-Stokes equations describing heat transfer was used to reflect energy transfer from explicit to latent heat.The total power consumption during drying process was estimated on the bases of inventory analysis and extensive industrial measurements of air temperature distribution along the axis and radius during regular tower operation.initial to final during drying process.The paper presents This approach allowed carrying out 3D CFD calculations of counter-current spray drying process for continuous phase only.The probability function to control the distribution of density of power consumption as a function of the distance from the atomizers was determined by trial and error method to fit experimental temperature measurements in the industrial tower.Finally,it was concluded that a confident CFD model of heat transfer in the counter-current industrial spray dryer has been developed.Developed CFD model of heat and mass transfer is valid for the investigated drier only,although general methodology is universal and can be applied for scaling up of countercurrent spray drying process.
Counter-current spray drying industrial dryer energy distribution temperature profiles industrial measurements
P.Wawrzyniak M.Podyma I.Zbicinski Z.Bartczak A.Polańczyk J.Rabaeva
Faculty of Process and Environmental Engineering,Technical University of Lodz 213 Wolczanska Str.,93-005 Lodz,Poland
国际会议
The 18th International Drying Symposium Conference(第十八届国际干燥学术大会(IDS2012))
厦门
英文
1-8
2012-01-11（万方平台首次上网日期，不代表论文的发表时间）