Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Sulfur or sulfur containing component
Patent
1991-05-07
1993-09-21
Heller, Gregory A.
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Sulfur or sulfur containing component
4232422, 4232427, 42324308, 423555, 4235192, C01B 1700, C01B 1720, C01B 1722
Patent
active
052466795
ABSTRACT:
A process for producing large, regularly-shaped crystalline calcium sulfite solids in a wet calcium-based flue gas desulfurization system is provided. A chemical crystal modifier, preferably an organophosphonate, is added to the calcium sulfite-containing solids slurry produced by the FGD process under inhibited oxidation conditions at an addition level which promotes the formation of large, regular calcium sulfite crystals that are easily dewatered.
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Maller Gordon
Meserole Frank B.
Moser Robert E.
Electric Power Research Institute
Heller Gregory A.
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