Product design based on discrete particle modeling of a fluidized bed granulator

作     者：Lennart Fries Sergiy Antonyuk Stefan Heinrich Gerhard Niederreiter Stefan Palzer 

作者机构：Nestlé Research Center Institute of Solids Process Engineering and Particle Technology Hamburg University of Technology 

出 版 物：《Particuology》 (颗粒学报（英文版）)

年 卷 期：2014年第12卷第1期

页      面：13-24页

核心收录：

学科分类：0832[工学-食品科学与工程（可授工学、农学学位）] 0817[工学-化学工程与技术] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 083202[工学-粮食、油脂及植物蛋白工程] 0702[理学-物理学] 

主　　题：FluidizationAgglomerationDiscrete element methodFood powderCollision dynamics 

摘      要：Fluidized bed agglomeration is a process commonly used to construct powdered food or pharmaceuti cal products to improve their instant properties. This works analyzes the influence of a wide range of operating parameters （i.e., fluidization air flow rate, temperature, and liquid injection rate） on growth rate, process stability, and product particle structure. Different granulator configurations （i.e., top spray, Wurster coater, spouted bed） are compared using identical process parameters. The impacts of both pro cess variables and granulator geometry on the fluidization regime, the particle and collision dynamics, and the resulting product structure and corresponding properties are studied in detailed simulations using a discrete particle model （DPM） and labscale agglomeration experiments with amorphous dextrose syrup （DE21）. The combination of numerical and experimental results allows to correlate the kinetics of micro scale particle interactions and the final product properties （i.e., agglomerate structure and strength）. In conclusion, detailed DPM simulations are proven as a valuable tool for knowledgebased product design.