Vaporization model of MgCl<sub>2</sub>-CaCl<sub>2</sub> binary melts in fluidized bed

Qiao Wang; Qingshan Zhu; Chuanlin Fan; Zhen Wang; Hongzhong Li

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Vaporization model of MgCl₂-CaCl₂ binary melts in fluidized bed

Chemical Engineering Thermodynamics | Updated：2026-01-06

- Vaporization model of MgCl₂-CaCl₂ binary melts in fluidized bed
- Chinese Journal of Chemical Engineering Vol. 25, Issue 1, Pages: 123-129(2017)
- Affiliations：
  
  1. State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences,Beijing,China,100190
  2. University of Chinese Academy of Sciences,Beijing,China,100049
- Author bio：
- Funds：
- DOI：
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- Published：2017
- Accepted：
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-CaCl
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摘要

Abstract

The present study investigated the vaporization kinetics of MgCl

CaCl

and their binary melts in a fluidized bed at 1073-1273 K

and developed a vaporization model for the binary melts to explore the possibility of achieving enhanced vaporization rate for the feedstock containing CaO greater than 0.2 wt%. The vaporization rate constant of MgCl

is more than seven times than that of CaCl

at 1273 K. The vaporization rate of the binary melt was significantly affected by the composition

a small quantity of CaCl

can remarkably deteriorate the overall vaporization rate. Experimental results coincide well with the numerical simulation by the vaporization model which regards the evolution of vaporization rate with melts composition. A correlation between the necessary operation temperature and the CaO/(CaO+MgO) of the feedstock was proposed. Predictions reveal that a similar vaporization rate for 0.2 wt%-0.4 wt% CaO content feedstock with 0.2 wt% could be achieved at lower than 1365 K.

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Vaporization model of MgCl2-CaCl2 binary melts in fluidized bed

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Vaporization model of MgCl₂-CaCl₂ binary melts in fluidized bed