BOILER AND A SUPERHEATER, AS WELL AS A METHOD
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United States of America Patent
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Issued Date -
Mar 21, 2013
app pub date -
Apr 21, 2011
filing date -
Apr 23, 2010
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Abandoned
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Abstract
A boiler and a method in a boiler producing thermal energy, the method including: combustion or fuel and combustion air in the furnace of the boiler, delimited by walls; receiving of thermal energy by a steam superheater placed on the wall of the furnace and including at least one heat exchange surface, and supplying of gas or a gas mixture to the front of said heat exchange surface to form a barrier layer for protecting the heat exchange surface from flue gases developed in connection with the combustion. At least one supply device is provided in the superheater or in the direct vicinity of the superheater, to supply gas or a gas mixture to the front of said heat exchange surface to form a barrier layer to protect the heat exchange surface from the flue gases in the boiler.
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