Reduction in coke oven heat consumption through improved fuel valve adjustment

Abstract

Reducing fuel gas consumption in coke oven operations is desirable because more than 500Mcal per ton of fuel gas is necessary in order to make coke from coal by dry distillation in steelworks. Many of the coke ovens in Japan are old resulting in each individual coking chamber and combustion flue chamber having different characteristics thus producing differences in flue temperature and coking time even in the same coke oven battery. There are fuel valves for adjusting the temperature in each combustion flue chamber but proper manual adjustment is difficult because changing one fuel gas opening changes flue temperature not only for that chamber but also for every other chamber because of the interaction effect. This paper proposes a new method for effectively adjusting valve opening considering the interaction between the setting of each valve and the temperature of each flue.