Methods of improving productivity of black liquor recovery boilers
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United States of America Patent
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Jun 25, 2002
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app pub date -
Sep 9, 1999
filing date -
Sep 26, 1997
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Abstract
Methods are presented to increase the throughput of a recovery boiler equipped with at least primary and secondary levels of injection of air. The methods comprise operating the recovery boiler with a third level of oxidant injection below or at the same level as the secondary level, and oxygen enrichment applied to at least the secondary level and said third level.
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