MEASUREMENTS OF PARTICLE RESIDENCE TIME DISTRIBUTIONS IN A COCURRENT SPRAY DRYER

被引：30

作者：

KIEVIET, F

KERKHOF, PJAM

机构：

[1] Laboratory of Separations Technology, Department of Chemical Engineering, Eindhoven University of Technology, NL-5600, MB, Eindhoven

来源：

DRYING TECHNOLOGY | 1995年 / 13卷 / 5-7期

关键词：

PARTICULATES; SPRAY DRYING;

D O I：

10.1080/07373939508917019

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Measurements of particle residence time distributions by means of tracer analysis were done in a co-current pilot plant spray dryer operated with a pressure-nozzle. A system is described for injecting tracer into the feedstream just before the nozzle. Tracer concentrations were measured in two product streams: the tower product stream (mean particle size 134 microns) and the cyclone product stream (mean particle size 67 microns). The measurements show a very wide range of residence times: some particles have residence times shorter than 3 seconds, others have residence times longer than 10 minutes. The median of the distribution is 58.5 s for the tower product stream and 42.2 s for the cyclone product stream.

引用

页码：1241 / 1248

页数：8