Abstract:
A coke oven battery of the type that is underfired with coke oven gas, wherein a system of horizontal bus flues and valve controls therefor is provided for controlling the supply of lean gas fuel, such as blast furnace gas or any other lean gas, selectively to the gas flues in heating zones of the coke oven chamber walls and the recirculation of waste gas therefrom, so as to achieve the optimum fuel consumption under varying bulk density conditions of the coal mass in the coke oven chamber from the coke side to the pusher side.