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Operation strategy of industrial crystallization for the production of 2,3,4,4 '-tetrahydroxybenzophenon

Authors
Kim, Do YeonYang, Dae Ryook
Issue Date
7월-2015
Publisher
KOREAN INSTITUTE CHEMICAL ENGINEERS
Keywords
Tetrahydroxybenzophenone; Crystallization; Optimization; Operation Strategy
Citation
KOREAN JOURNAL OF CHEMICAL ENGINEERING, v.32, no.7, pp.1222 - 1228
Indexed
SCIE
SCOPUS
KCI
Journal Title
KOREAN JOURNAL OF CHEMICAL ENGINEERING
Volume
32
Number
7
Start Page
1222
End Page
1228
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/93180
DOI
10.1007/s11814-014-0320-z
ISSN
0256-1115
Abstract
To improve the filterability of hydroxybenzophenone crystal, a cooling strategy for the cooling crystallization process is investigated by examining the solubility and growth kinetics of hydroxybenzophenone. The operating strategy is divided into two steps. The first step is to generate the seed by dissolving the raw material and by changing operating conditions. The second step is to grow seeds to the product with desired crystal size distribution. For each part, an operating strategy has been proposed based on the solid-liquid phase equilibrium data in a ternary system and growth kinetic experimental results. The strategy for the first step is experimentally determined under various operating conditions, and the second one is determined by theoretical modeling and model-based optimization. The average crystal size resulting from the proposed strategy has been improved and the filterability has been enhanced compared to an existing strategy used in the industry.
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