METHOD FOR ADJUSTING FURNACE ATMOSPHERE IN CONTINUOUS ANNEALING FURNACE (AS AMENDED)
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United States of America Patent
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Nov 12, 2015
app pub date -
Jan 28, 2013
filing date -
Jan 28, 2013
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Abstract
A problem with existing technologies that, when decreasing the dew point of the inside of a continuous annealing furnace by using a refiner, a decrease in the temperature of a part of the inside of the furnace cannot be prevented without supplying additional heat, is to be solved. Provided is a method for adjusting a furnace atmosphere in a continuous annealing furnace, the method including drawing a gas, which is a part of the furnace atmosphere, into a refiner 8 disposed outside the furnace and dehumidifying and deoxidizing the gas; causing the gas that has been dehumidified and deoxidized and that has exited the refiner 8 to exchange heat with a gas that is to be drawn into the refiner 8 in a heat exchanger 7 disposed outside the furnace; causing the gas to exchange heat with the furnace atmosphere in a furnace heat exchanger 11 disposed in the furnace; and reinjecting the gas into the furnace.
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