The effect of temperature on particle entrainment rate in a gas fluidized bed

被引：19

作者：

Choi, JH

Choi, KB

Kim, P

Shun, DW

Kim, SD

机构：

[1] JINDO ENGN & CONSTRUCT CO, SEOUL 153023, SOUTH KOREA

[2] KOREA INST ENERGY RES, TAEJON 305343, SOUTH KOREA

[3] KOREA ADV INST SCI & TECHNOL, DEPT CHEM ENGN, TAEJON 305701, SOUTH KOREA

来源：

POWDER TECHNOLOGY | 1997年 / 92卷 / 02期

关键词：

fluidized beds; entrainment rate; temperature effects;

D O I：

10.1016/S0032-5910(97)03225-7

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The qualitative effect of temperature on the particle entrainment rate has been measured in a gas fluidized bed (i.d. 0.1 m, height 1.97 m) equipped with an electric heater, using sand as the bed material. The mean particle size (0.091-0.363 mm), the gas velocity (0.65-2.3 m/s) and the bed temperature (20-600 degrees C) were considered as experimental variables. As the temperature was increased, the particle entrainment rate was observed to decrease initially. However, above a certain temperature it began to increase for gas velocities between 0.8 and 1.4 m/s. The variation of the particle entrainment rate with temperature was similar to that of the particle size for which the terminal velocity is equal to the gas velocity.

引用

页码：127 / 133

页数：7