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A Mathematic Model for Direct Causticization of Na2CO3with TiO2in a Semi‐batch Reactor
- Source :
- Canadian Journal of Chemical Engineering; October 2002, Vol. 80 Issue: 5 p948-953, 6p
- Publication Year :
- 2002
-
Abstract
- A mathematic model was developed for direct causticization of sodium carbonate with titanium dioxide in a semi‐batch reactor. The model predictions of the titanate yield and pentatitanate yield showed a reasonable agreement with the experimental data from a pilot‐scale fluidized bed operating in semi‐batch mode. The rate constant of the present model was generally consistent with those obtained from the small‐scale batch experiments in the literature. A new rate constant considering carbonate conversion to pentatitanate was introduced. All the results provided support that the solid‐state direct causticization of sodium carbonate with titanium dioxide in a semi‐batch fluidized bed follows the shrinking‐core diffusion model.
Details
- Language :
- English
- ISSN :
- 00084034 and 1939019X
- Volume :
- 80
- Issue :
- 5
- Database :
- Supplemental Index
- Journal :
- Canadian Journal of Chemical Engineering
- Publication Type :
- Periodical
- Accession number :
- ejs23892417
- Full Text :
- https://doi.org/10.1002/cjce.5450800518