摘要
在 15 0 mm× 5 0 mm× 110 0 mm的矩形喷动床中 ,研究了单一粒径体系和二组分及三组分混合粒径颗粒体系的最大喷动压降受颗粒粒径及粒度组成、静止床高和气体入口狭缝宽度的影响情况。实验采用宽度为2、4、6 mm三种宽度的狭缝式气体分布板 ,实验物料为单一粒径分别为 1、1.5、2 mm的玻璃珠。实验表明矩形喷动床的最大喷动压降与上述三种影响因素都有关系。
The maximum spouted pressure drop of multi-size composition glass bead mixtures was investigated in a rectangular-slot spouted bed with a gas entry slot which width varies from 2mm to 6mm. The experimental results of single and multi-size composition particle mixtures showed that the maximum spouted pressure drop was strongly dependent on the particle size and its composition in the particle mixtures, the static bed height and the gas entry slot. In the present work, regimes describing variation of maximum spouted pressure drop for multi-size composition particle mixtures were obtained. An empirical relation for the maximum spouted pressure drop ΔPms was determined to be: ΔPms/(1-ε)(ρs-ρi gH=0.023(H/Dc)-0.074(Hs/Dc) 0.028(ρs-ρi/ρi) -0.65n product i=1(dpi/D c)-0.54X(i)(n=3).
出处
《化学反应工程与工艺》
EI
CAS
CSCD
北大核心
2001年第2期107-111,共5页
Chemical Reaction Engineering and Technology
