Method and apparatus for preparing calcium carbonate for scrubbing sulfur oxides from combustion effluents
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United States of America Patent
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Oct 13, 1998
Issued Date -
N/A
app pub date -
Sep 16, 1996
filing date -
Jun 9, 1994
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Abstract
Limestone is dried for grinding to very fine particles e.g., about 8.mu. or less with more than 99% of the particle by weight less than 44.mu., by utilizing waste heat from the flue gas from a large combustor. The finely-divided calcium carbonate is then introduced dry into a scrubbing tower where it mixes with and renews the slurry employed therein for scrubbing SO.sub.x -laden effluent.
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