Kinetics of reaction crystallization of cerium oxalate decahydrate in continuous crystallizer

化学工业与工程

Chemcial Industry and Engineering

2022, Vol. 39

Issue (3) :42-48 DOI: 10.13353/j.issn.1004.9533.20210392

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Kinetics of reaction crystallization of cerium oxalate decahydrate in continuous crystallizer

XIE Fei¹, HUANG Yunhai², WU Dehui¹, HOU Xuefeng¹, YUAN Siwen¹, ZHOU Guanchen¹, YANG Jinyue², TIAN Beiqian², HAO Hongxun²

1. China Nuclear Power Engineering Co., Ltd., Beijing 100840, China;
2. National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China

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Abstract The kinetics of continuous reaction crystallization of cerium oxalate decahydrate in a mixed suspension-mixed product-removal (MSMPR) crystallizer was studied using the continuous steady state method. Based on the grain size independent growth rate model, the obtained particle population density distribution data were used to determine the nucleation kinetic equation and growth kinetic equation of cerium oxalate decahydrate under different experimental conditions by regression. The index of the nucleation and growth rate of cerium oxalate decahydrate crystal relative to the supersaturation is calculated to be 4.211 and 0.752, respectively. Theoretical analysis of the equations showed that low supersaturation was beneficial to the preparation of cerium oxalate decahydrate crystals with larger average particle size. The kinetic study of cerium oxalate decahydrate crystal would provide important kinetic data for its large-scale industrial production.

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	XIE Fei
	HUANG Yunhai
	WU Dehui
	HOU Xuefeng
	YUAN Siwen
	ZHOU Guanchen
	YANG Jinyue
	TIAN Beiqian
	HAO Hongxun

Keywords： cerium oxalate decahydrate continuous reaction crystallization crystallization kinetics nucleation rate growth rate

Received 2021-07-09;

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XIE Fei, HUANG Yunhai, WU Dehui, HOU Xuefeng, YUAN Siwen, ZHOU Guanchen, YANG Jinyue, TIAN Beiqian, HAO Hongxun.Kinetics of reaction crystallization of cerium oxalate decahydrate in continuous crystallizer[J] Chemcial Industry and Engineering, 2022,V39(3): 42-48

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