On two-compartment population balance modeling of spray fluidized bed agglomeration
On two-compartment population balance modeling of spray fluidized bed agglomeration
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DOI：
10.1016/j.compchemeng.2013.11.003
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发表时间：
2014-02-11
影响因子：
4.3
通讯作者：
Tsotsas, Evangelos
中科院分区：
文献类型：
--
作者：
Hussain, Mubashir;Kumar, Jitendra;Tsotsas, Evangelos
基于颗粒以一定稳态质量流率在两个隔间之间进行通信的概念，对喷雾流化床造粒（SFBG）过程进行建模和分析。提出了一种求解双室模型（2CM）的数值方法，并对一些新导出的解析解进行了验证。此外，将单室模型（1CM）的速率常数反演技术推广到2CM。研究了在一定条件下，2CM的聚合速率常数与常规1CM的聚合速率常数的相关性，发现一般情况下，1CM不能用于预测2CM的结果。此外，还观察到SFBG中两个区域的存在在一定程度上对聚合速率常数的时间依赖性行为负责。最后，研究了隔室尺寸和颗粒停留时间对颗粒粒径分布的影响。(C) 2013 Elsevier Ltd.版权所有。
The present work focuses on the modeling and analysis of a spray fluidized bed granulation (SFBG) process based upon the concept that particles are communicating between the two compartments at some steady state mass flow rate. A numerical technique for solving the proposed two-compartment model (2CM) is developed and validated against some newly derived analytical solutions. Moreover, the inverse technique for extracting the rate constant of one-compartment model (1CM) is extended to 2CM. A correlation of aggregation rate constant of 2CM with the rate constant of conventional 1CM under some restrictions is investigated and it is found that the 1CM cannot be used, in general, to predict results of 2CM. Furthermore, it is observed that the existence of two zones in SFBG is responsible to certain extent for time dependent behaviour of aggregation rate constant. Finally, influence of compartment sizes and particles residence times on particle size distribution is investigated. (C) 2013 Elsevier Ltd. All rights reserved.