Kinetics of pozzolanic reaction for preparation of flue gas desulfurizer from fly ash and Ca(OH)2

2007, Volume 1, Issue 3

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Frontiers of Chemical Science and Engineering >> 2007, Volume 1, Issue 3 doi: 10.1007/s11705-007-0048-y

Kinetics of pozzolanic reaction for preparation of flue gas desulfurizer from fly ash and Ca(OH)2

1.School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; School of Chemical Engineering, Hebei University of Technology, Tianjin 300130, China; 2.School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;

Available online: 2007-09-05

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Abstract

A kinetic model of the pozzolanic reaction for the preparation of flue gas desulfurizers from fly ash and Ca(OH) was deduced on the basis of solid phase reaction kinetic theory. Kinetic expressions and parameters were obtained and verified by experiment. A comparison of calculated results with experimental results showed that precision in kinetic expressions was good. The apparent reaction rate constants of the pozzolanic reaction could be raised by increasing the specific surface area of fly ash and the hydration temperature, and by using a suitable additive.

Keywords

comparison ; calculated ; pozzolanic reaction ; precision ; preparation

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