Effect of Operating Conditions on Ice Characteristics in Continuous Eutectic Freeze Crystallization

被引：37

作者：

Chivavava, Jemitias ^{[1
]}

Rodriguez-Pascual, Marcos ^{[1
]}

Lewis, Alison E. ^{[1
]}

机构：

[1] Univ Cape Town, ZA-7701 Western Cape, South Africa

来源：

CHEMICAL ENGINEERING & TECHNOLOGY | 2014年 / 37卷 / 08期

关键词：

Crystal morphology; Crystal size distribution; Eutectic freeze crystallization; Residence time; Supercooling; OSTWALD; NUCLEATION; BEHAVIOR; KINETICS; GROWTH;

D O I：

10.1002/ceat.201400094

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The efficacy of eutectic freeze crystallization (EFC) in crystallizers and in subsequent downstream washing or filtration steps is a direct function of size and morphology of the crystalline products. These product characteristics are influenced by supersaturation and residence time. To investigate the effect of residence time and supercooling on ice product characteristics in a continuous EFC process, crystallization experiments were performed in an EFC crystallizer with Na2SO4 aqueous solution. Crystal size distribution and morphology during the crystallization process were analyzed by digital image processing. Longer residence times enhanced the mean crystal size and disk-shaped ice crystals were formed. Increasing supercooling resulted in a larger mean ice equivalent diameter.

引用

页码：1314 / 1320

页数：7

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