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High-temperature reaction between sulphur dioxide and limestone—IV. A discussion of chemical reaction mechanisms and kinetics

✍ Scribed by K. Dam-Johansen; K. Østergaard

Publisher
Elsevier Science
Year
1991
Tongue
English
Weight
397 KB
Volume
46
Category
Article
ISSN
0009-2509

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✦ Synopsis

A model describing the chemical kinetics of the sulphation of calcium oxide has been developed in terms of elementary chemical reaction mechanisms. The model predicts that the rate-determining reaction at low temperatures is the disproportionation of calcium sulphite and that the rate-determining reaction at high temperatures is the direct oxidation of calcium sulphite and/or the reaction between calcium oxide and sulphur trioxide. The model is in good agreement with the limited amount of experimental measurements of initial rates of the sulphation reaction available in the literature.

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