Coke jumping in the low-moisture coking process?
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Our factory has adopted a low-moisture coking quenching process. During coking quenching, the coke cracks and shatters, scattering everywhere, which not only increases the workload but also creates potential hazards for accidents. I would like to ask: how can this phenomenon be avoided?
It seems that this problem exists in low-moisture quenching of 6m coke ovens these days. The measure we took was to first measure the distance between the quenching vehicle and the dust removal plates of the quenching tower, and then install steel grills in three directions (excluding the compartment facing the coke delivery direction) to prevent the coke from being impacted by water currents or exploding and splashing out of the quenching compartment; the results have been satisfactory
The low-moisture coking process is a US Steel Corporation patent; in China it is referred to as the new wet coking method. . During coking quenching, the coke does not jump around randomly; rather, it undergoes a process of boiling. The purpose of this is to ensure even quenching, and this is exactly what the process design aims for. The solution is to install a cover under the spraying pipe, ideally at a distance of 100–200 mm from the coke quenching car, which effectively prevents the coke from falling out and ensures optimal quenching results. .
Installing a cover under the spraying tube can reduce boiling
I think there are still design flaws in this, and technical personnel need to study it carefully in light of the actual situation. Our unit has already made the change; it’s now the same as wet quenching.
Here too, we have installed a grating cover under the spraying pipe; the effect is average – some of the coke jumps out and ends up in the pool, where it is then collected as powdered coke.
It is possible to add a coke barrier net below the spraying pipe; this net can be sized to match the dimensions of the coke quenching vehicle, with a height of around 1 to 1.5 meters. An additional wide-angle barrier net can be installed at the top to prevent the coke that bubbles up during the quenching process from escaping into the vehicle. In this way, the amount of coke that is discharged should decrease significantly, and the quantity of coke powder in the powder coke tank will be markedly reduced; of course, there will be virtually no large-grained coke in the tank. Give it a try.