Water seal at backpass economizer gas outlet
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United States of America Patent
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Apr 26, 2016
Grant Date -
Nov 7, 2013
app pub date -
May 1, 2012
filing date -
May 1, 2012
priority date (Note) -
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Abstract
A compensations duct assembly [100] is described that provides a gas tight connection between a backpass [9] of a furnace [3] and an air preheater pipe [10] having one end fixed relative to a floor. The compensation duct assembly [100] has an air preheater opening [133] that is connected to an air preheater duct [10]. A liquid seal [120] is employed to compensate for the movement due to thermal expansion between the backpass [9] and the compensation duct assembly [100]. The liquid seal [120] provides a gas tight connection under various conditions of thermal expansion.
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