Effect of Supersaturation on the Particle Size of Ammonium Sulfate in Semibatch Evaporative Crystallization

被引：38

作者：

Jim, Kabenla Mensah ^{[1
]}

Kim, Kwang-Joo ^{[1
]}

Jang, Young-Nam ^{[2
]}

机构：

[1] Hanbat Natl Univ, Crystallizat Proc & Engn Lab, Taejon 305719, South Korea

[2] Korea Inst Geosci & Mineral Resources KIGAM, Taejon 305350, South Korea

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2013年 / 52卷 / 32期

关键词：

PRECIPITATION; NUCLEATION; KINETICS; STATE;

D O I：

10.1021/ie4007968

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

To crystallize ammonium sulfate (AS) of a coarse fraction of 1 to 3 mm size, a semibatch evaporative crystallization mode was applied. The crystal size was controlled by supersaturation. The induction time and supersaturation were analyzed in seeded and unseeded semibatch crystallizations. The interfacial tension was obtained by nucleation experiments. Experimental results indicated that supersaturation was strongly dependent on the metastability of the system and had a strong influence on the crystal growth. This result will contribute to a better understanding of the control of the particle size of AS by supersaturation. Coarse AS crystals can be obtained at supersaturation of 0.02-0.06 in seeded semibatch evaporation crystallization.

引用

页码：11151 / 11158

页数：8

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