Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Sulfur or sulfur containing component
Patent
1988-04-29
1991-08-13
Chaudhuri, Olik
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Sulfur or sulfur containing component
C01B 1700
Patent
active
050394991
ABSTRACT:
A process for desulfurizing sulfur dioxide-containing gases wherein the sulfur-containing gases are contacted with an aqueous solution of magnesium hydroxide in a wet scrubber, wherein magnesium sulfite and magnesium bisulfite are formed, a portion of spent scrubbing medium is subjected to oxidation to convert the magnesium sulfite and the magnesium bisulfite therein to magnesium sulfate, the oxidized product is contacted with a magnesium-containing lime slurry to obtain magnesium hydroxide and calcium sulfate, calcium sulfate is separated from the resulting product and the magnesium hydroxide is recycled to the scrubber.
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The Handbook of Chemistry and Physics, 53rd edition Weast ed. p. F-169.
Chaudhuri Olik
Dravo Lime Company
Horton Ken
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