Method and industrial furnace for using a residual protective gas as a heating gas
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United States of America Patent
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Nov 17, 2015
Grant Date -
Nov 1, 2012
app pub date -
Apr 2, 2012
filing date -
Apr 5, 2011
priority date (Note) -
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Abstract
In order to increase energy efficiency in an industrial furnace (1) operated by heating gas and protective gas for thermally treating materials, a first burner (3.1) is actuated for heating with priority over a second burner (3.2), the second burner (3.2) is engaged additionally and operated when the output from the first burner (3.1) falls below the level necessary to heat the industrial furnace (1) up to a temperature setpoint, and the second burner (3.2) is switched off when the temperature setpoint has been reached.
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