Numerical Simulation on Superheated Steam Fluidized Bed Drying at Different Operating Pressures

被引：6

作者：

Xiao Zhifeng ^{[1
]}

Zhang Fan ^{[2
]}

Xu Lei ^{[1
]}

Wang Jianhong ^{[1
]}

Wu Nanxing ^{[1
]}

机构：

[1] Jingdezhen Ceram Inst, Sch Mech & Elect Engn, Jingdezhen 333403, Peoples R China

[2] Jingdezhen Ceram Inst, Jingdezhen 333403, Peoples R China

来源：

INTERNATIONAL JOURNAL OF FOOD ENGINEERING | 2017年 / 13卷 / 10期

基金：

中国国家自然科学基金;

关键词：

operating pressure; superheated steam fluidized bed drying; numerical simulation; maximum drying rate; MODEL;

D O I：

10.1515/ijfe-2017-0093

中图分类号：

TS2 [食品工业];

学科分类号：

0832 ;

摘要：

During superheated steam fluidized bed drying process, the operating pressure has an important influence on heat and mass transfer characteristics and the vapor-solid two-phase flow characteristics. Based on the two-dimensional unsteady model of rapeseeds drying process, the influence of operating pressure on the superheated steam fluidized bed drying kinetics was revealed by computer numerical simulation. The quantitative analysis of relationship between operating pressure and maximum drying rate was conducted under negative pressure, near atmospheric pressure and high pressure environment, respectively. The optimum operating pressure values for superheated steam fluidized bed drying were obtained with the imported superheated steam temperature and superficial velocity. The simulation results provide a theoretical reference for superheated steam fluidized bed drying technology applying to agro-processing projects.

引用

页数：10

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