Downcomer valve for non-recovery coke oven
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United States of America Patent
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-
Feb 13, 2001
Grant Date -
N/A
app pub date -
Mar 1, 1999
filing date -
Mar 1, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention is a valve for a non-recovery coke oven which permits improved control of the gas pressure in the interior cavity of the oven. The valve has a rotating plug with a beveled end which progressively connects and disconnects the interior cavity of an oven with a downcomer valve disposed in an oven wall to change the gas pressure in the interior of the oven. By controlling the gas pressure the amount of combustion air entering the oven can be controlled giving an operator control over the thermal gradients established by combustion. The combustion of a majority of the coal gas in the flues below the oven floor creates a thermal gradient that rises through the oven floor, a gradient which is ideal for the production of an improved coke product.
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