Abstract: A high efficiency checker brick for use in a coke oven regenerator. A unique configuration is disclosed which results in the brick having rows of longitudinal slots with vertically corrugated surfaces. The front and rear side surfaces are similarly corrugated, and separator surfaces are provided to space the brick from other bricks so that other vertical gas conveying slots are formed. Although the disclosed brick has an unusually large surface area, it has adequate mass and structural strength and may be manufactured by the economically attractive re-press or dry press methods.

Abstract: A heating wall on a horizontal coke oven battery. The liner wall section which separates the flues from the oven chambers is characterized by two or more laterally extending rows of vertical ridges. The ridges in adjacent rows are misaligned so as to establish surface turbulence in rising flue gases. As a result of this turbulence and the increased surface area afforded by this configuration, the rate of heat flow through the liner walls is increased so as to increase the rate of carbonization in the oven chambers.