On‐line determination of supersaturation of a kcl‐nacl aqueous solution based on density measurement
作者:
Terry P. Redman,
Sohrab Rohani,
期刊:
The Canadian Journal of Chemical Engineering
(WILEY Available online 1994)
卷期:
Volume 72,
issue 1
页码: 64-71
ISSN:0008-4034
年代: 1994
DOI:10.1002/cjce.5450720110
出版商: Wiley Subscription Services, Inc., A Wiley Company
关键词: Keywords: saturation temperature;supersaturation;solubilities;aqueous NaCI‐KCI solution;KCI crystallization
数据来源: WILEY
摘要:
AbstractA method is developed for the calculation of the saturation temperature of a KCI‐NaCI aqueous solution, based on the measurement of the density and temperature of a sample solution, and prior knowledge of the NaCl concentration. Experimental density and solubility data for solutions saturated with KCI in the temperature range of 299 to 321 K with concentrations of NaCl greater than 0.200 kg/kg H2O were used to develop the empirical correlation allowing the calculation of the solution saturation level.The method is applicable in the on‐line determination of the level of supersaturation in a KCI crystallizer in which the NaCl concentration is known. Knowledge of the prevailing supersaturation is necessary for the control of crystal purity and crystal size distribution in industrial potash crystalliz
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