BOILER PRODUCING STEAM FROM FLUE GASES WITH HIGH ELECTRICAL EFFICIENCY AND IMPROVED SLAG QUALITY
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United States of America Patent
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Issued Date -
Feb 26, 2009
app pub date -
Sep 29, 2006
filing date -
Sep 30, 2005
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Abandoned
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Abstract
This invention relates to a boiler (1) drying, igniting and combusting refuse and producing steam (2, 2a) by heat exchange with flue gases (3). Said boiler (1) comprises a reactor (16) with firing a secondary fuel (18) for generating a less-corrosive gas flow (6) and an end superheater (8) located in the flow (6) of said less-corrosive gas. Said reactor (16) could be a sintering reactor, a rotary kiln, a fluidised bed or a spouted bed. This provides for an increased lifetime of the end superheater and makes the boiler provide a high and efficient electrical power output.
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