Author： Siddiqi M.A. Krissmann J. Lucas K.
Publisher： Academic Press
ISSN： 0021-9614
Source： Journal of Chemical Thermodynamics, Vol.29, Iss.4, 1997-04, pp. : 395-400
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Abstract
The spectrophotometric technique described in a previous communication has been developed further to study the phase and chemical equilibrium for (sulphur dioxide+water) at elevated temperatures pertinent to flue gas purification. Both the vapour and the liquid phase have been analysed in situ . The analysis of the vapour phase has been performed with the help of a diode array u.v. spectrophotometer equipped with silica fibre light guides. The liquid phase has been analysed using a fibre-optic coupled immersion probe. Experimental results for the equilibrium partial pressures of (sulphur dioxide+water) at very low SO 2 concentrations, typical for flue gases, are reported at T =(298.20, 312.95, 322.70, and 332.50) K. The chemical equilibrium in the liquid phase is also presented in terms of dissociated and undissociated sulphur dioxide in aqueous solution.
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