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Removing Sulfur Dioxide from Flue Gases. Regeneration Rates for Alkalized Alumina.

Town JW; Russell JH; Kelly HJ
NTIS: PB 198 337 :24 pages
The Bureau of Mines studied the effects of reducing gas composition, temperature, and superficial gas velocity on the regeneration rate of alkalized alumina. Regeneration was assumed to follow the simple first order reaction for removal of sorbed so2: du/dt = -ku. An arrhenius relationship can be plotted, which shows an activation energy of about 75 kcal/mole for simulated reformed propane. The general effects of the individual gases can be described as follows: (1) CO and h2 produced rates proportional to their concentrations, up to about 5 percent for each; (2) addition of co2 had no effects on the regeneration rate by co; (3) the regeneration rate by h2 was lowered by the addition of h2o while the regeneration rate by CO was increased by h2o addition; (4) h2s showed a positive effect up to concentration levels of about 2 percent and then produced a rapid negative effect; (5) carbonyl sulfate (cos) increased the sulfur content; and (6) propane was as effective in regenerating the loaded pellets as was simulated reformed propane.
Publication Date
Document Type
IH; Report of Investigations
Fiscal Year
NTIS Accession No.
NTIS Price
Identifying No.
RI 7478
NIOSH Division
Source Name
NTIS: PB 198 337
Page last reviewed: December 10, 2021
Content source: National Institute for Occupational Safety and Health Education and Information Division