RECOVERY PROCESS AND SYSTEM FOR A PULP MILL
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United States of America Patent
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Issued Date -
Nov 27, 2008
app pub date -
Apr 23, 2008
filing date -
Apr 23, 2007
priority date (Note) -
Abandoned
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Abstract
A method for burning chlorine-containing liquors in a chemical recovery boiler at a pulp mill, wherein the recovery boiler includes spent liquor sprayers for feeding spent liquor and a number of combustion air levels including: increasing a combustion temperature in the recovery boiler in a burning zone where a chlorine-containing liquor or a chlorine-containing effluent is burned; while burning the liquor or effluent, volatilizing the chlorine in the liquor or effluent to produce chloride-containing salts in flue gases in the boiler, and removing the chloride-containing salts from the flue gases.
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