Chemistry of inorganic compounds – Sulfur or compound thereof – Oxygen containing
Patent
1984-04-16
1985-10-01
Doll, John
Chemistry of inorganic compounds
Sulfur or compound thereof
Oxygen containing
423242, 106109, 23313FB, C01B 1705, C01F 1146, C22B 1243
Patent
active
045445427
ABSTRACT:
A method for treating the fine-grained spend absorbent (primarily calcium sulfite and calcium sulfate) from a dry flue gas desulfurization process. The absorbent, having a small amount of binder therein, is oxidized in a fluidized bed reactor at a temperature in the range from about 700.degree. C. to about 1000.degree. C. to produce a dry essentially fully oxidized pelletized calcium sulfate product.
Calcium sulfate pellets having an average diameter of from about 0.5 mm to 5 mm and containing from about 1% to about 3%, by weight, of binder constituents, are composed of agglomerated calcium sulfate particles having an average diameter of from about 50.mu. to about 100.mu. bound to each other by the binder constituents.
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Angevine Peter A.
Bengtsson Sune
Koudijs George P.
Alway Robert M.
Doll John
Dorr-Oliver Incorporated
Greeley P. D.
Kearns B. J.
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