DETERMINATION OF THE KINETICS OF GROWTH AND DISSOLUTION OF SODIUM PERBORATE TETRAHYDRATE IN A FLUIDIZED-BED

被引：3

作者：

FRANCES, C

BISCANS, B

LAGUERIE, C

机构：

[1] Laboratoire de Génie Chimique (URA CNRS 192) ENSIGC, 31078 Toulouse Cédex, Chemin de la Loge

来源：

CHEMICAL ENGINEERING JOURNAL AND THE BIOCHEMICAL ENGINEERING JOURNAL | 1992年 / 48卷 / 02期

关键词：

Chemical Equipment - Fluidized Beds - Crystallization - Mathematical Models - Crystals - Growing - Sodium Compounds - Crystallization - Sodium Compounds - Dissolution;

D O I：

10.1016/0300-9467(92)85013-Y

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The authors present the results of an experimental study on the crystallization of tetrahydrate sodium perborate in a fluidized bed. The influences of supersaturation, seed crystal size, temperature and solution velocity on the overall growth rate were examined. The overall dissolution rate determined under comparable hydrodynamical conditions for various seed crystal sizes and temperatures is also reported. The growth rate is not very sensitive to the variations in crystal size, the temperature and the hydrodynamical conditions, but it depends on the supersaturation and the presence of some soluble impurities. The comparison between growth and dissolution rates shows that under actual working conditions the diffusional mass transfer step is not the limiting step of the growth mechanism.

引用

页码：119 / 127

页数：9

共 15 条

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BOTSARIS GD, 1966, J CHEM PHYS, V45, P1883

[2] GROWTH AND DISSOLUTION OF SODIUM PERBORATE IN AQUEOUS-SOLUTIONS BY USING THE RDC TECHNIQUE [J].