Arrangement in recovery boiler
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United States of America Patent
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Sep 15, 2009
Grant Date -
Dec 28, 2006
app pub date -
May 23, 2006
filing date -
Jun 2, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
The invention relates to an arrangement in a recovery boiler into which spent liquor to be incinerated and combustion air are supplied, the arrangement comprising superheaters (4a-4d) in the upper part of the recovery boiler for recovering heat, at least one boiler bank (11) located in a flue gas duct part (10a) known as the second pass, immediately after the recovery boiler, and at least one economizer (12a-12b) in a duct part after the second pass in the recovery boiler flue gas duct (10). The invention comprises an economizer (21) located parallel with the boiler bank (11) in the second pass.
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