How much coke oven gas can be mixed into blast furnace gas
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Blast furnace gas is used for heating coke ovens; some coke oven gas can be mixed into the blast furnace gas to increase its calorific value. Using too little has no effect, while using too much causes methane in the coke oven gas to crack and produce graphite that clogs the grid bricks – so how much is appropriate?
Generally, the mixing ratio of blast furnace gas and coke oven gas needs to be adjusted according to specific circumstances. When considering the mixing ratio, factors such as the calorific value, chemical composition, flow rate, and temperature of blast furnace gas and coke oven gas need to be taken into account comprehensively. Normally, 5%-20% coke oven gas can be mixed into blast furnace gas. If too much coke oven gas is mixed in, it will cause methane in the blast furnace gas to crack and form graphite, thereby blocking the equipment and affecting the normal operation of the blast furnace. Therefore, the mixing ratio should be controlled within a reasonable range. .
Under normal conditions, it’s usually 5-10%; otherwise, carbon buildup is likely to clog the lattice bricks