Method for inhibiting corrosion in integrated spray drying-calcining process
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United States of America Patent
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Nov 28, 1989
Grant Date -
N/A
app pub date -
Aug 31, 1988
filing date -
Aug 31, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Corrosion and sulfuric acid formation in an integrated spray-drying and calcining operation is inhibited by operating the calciner at a temperature so that the exit gases from the calciner provides sufficient heat to the spray drier to keep the exit gases from the spray drier at a temperature above the dew point of the SO.sub.3 /H.sub.2 O vapors present in the spray drier exit gas.
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