Kinetics of absorptions of lean sulfur dioxide into aqueous slurries of calcium carbonate and magnesium hydroxide

✍ Scribed by E. Sada; H. Kumazawa; Y. Sawada; I. Hashizume

• Publisher: Elsevier Science
• Year: 1981
• Tongue: English
• Weight: 310 KB
• Volume: 36
• Category: Article
• ISSN: 0009-2509
• DOI: 10.1016/0009-2509(81)80058-9

✦ Synopsis

The process of the absorption of sulfur dioxide into an aqueous slurry of calcium carbonate or magnesium hydroxide was theoretically analyzed according to the two-reaction-plane model incorporating the solid dissolution promoted by the reactions with absorbed sulfur dioxide in the liquid film. Theoretical enhancement factors compared well with the experimental data using a stirred tank absorber with a plane gas-liquid interface at (25^{\circ} \mathrm{C}). The concentrations of the accumulated species in the bulk liquid phase (bicarbonate ion for the calcium carbonate slurry and sulfite ion for the magnesium hydroxide slurry) which substantially control the absorption rates, were assesed by comparing experimental enhancement factors with the theoretical predictions.