Sodium-enhanced lime scrubbing method for removing sulfur dioxide from gaseous streams
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United States of America Patent
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-
Nov 30, 1993
Grant Date -
N/A
app pub date -
Apr 13, 1992
filing date -
Apr 13, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Sulfur dioxide is removed from a gaseous stream by contact with a lime slurry which contains sulfur to produce thiosulfate ions and 2,000-10,000 ppm of effective sodium ions to effect removal of the sulfur dioxide A bleed stream, removed from the scrubbing loop has calcium sulfite solids removed therefrom while separated liquor is returned to the scrubbing loop.
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