| Popis: |
Experiments were conducted to determine the influence of nitrogen oxides on the solid phase oxidation of sulfite to sulfate in slaked lime slurries from lime/limestone scrubbing systems. Nitric oxide is observed to act as an inhibitor and nitrogen dioxide as a promoter of the oxidation of sulfite. Nitric oxide present at the same concentration as nitrogen dioxide is unable to inhibit the oxidative influence of the latter. At a mole ratio of 12:1, the promotive action of nitrogen dioxide is offset, and the total oxidation is no greater than it would be without the presence of nitric oxide. Oxidation inhibition merits consideration as a way to avoid sulfate scaling in such scrubbing systems. (1 diagram, 1 graph, 6 references, 1 tables) |
