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.

Abstract: A coal compaction system and method for a non-recovery coke oven having refractory roof, floor, side walls and end doors for coal charging and coke discharge provides an improved coal charging machine carrying a coal conveyor supported intermediate the ends of the conveyor to avoid conveyor sagging and non-uniform depth of a deposited coal bed, a number of pressurized fluid-driven vibratory compactors mounted on an end of the charging machine and spaced-apart across the width of the coal bed and serving to compact the coal bed on a retraction stroke of the charging machine, a pivoted lifting frame mounted on the charging machine above the compactors and from which the compactors individually are suspended and are provided with individual supply of pressurized fluid, and a coke pusher head mounted on the charging machine behind the compactors and serving, when the lifting frame and associated compactors are raised, to push finished coke from the coke oven.

Abstract: An improved non-recovery coke oven floor constructed of a single layer of refractory bricks including, for each oven sole flue, a pair of trunnion bricks and a center bridge brick spanning the width of the flue, having lower brick surfaces in the form of an arch, and joined end-to-end by a tapered tongue-and-groove joint disposed approximately perpendicular to the direction of a compression load transmitted by the center bridge brick to the trunnion bricks.