Advantages of 7.63-meter coke ovens in terms of environmental protection

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Coke ovens are under increasing environmental pressure, so reducing smoke and dust emissions from them is an important task. Smoke and dust generation in coke ovens is related to the number of times coke is taken out and the sealing performance of the ovens. As coke ovens become larger, at the same coke production level, the number of coal charging and coke pushing operations can be significantly reduced (see table), thereby reducing the absolute amount of pollutants emitted ； Correspondingly, as the number of furnace doors, risers, and coal charging ports, as well as the total length of the furnace door sealing surfaces, decreases, dust emission from these areas can be significantly reduced, thereby lowering the total amount of dust emitted from the coke oven. At the same time, due to the improved strength of the iron components used to protect the coke oven, the sealing performance of 7.63-meter coke ovens is better throughout their operational life compared to 6-meter coke ovens; as a result, pollutant leakage from 7.63-meter coke ovens is reduced over their entire service life compared to those of 6-meter coke ovens. Table 6: Comparison of coking time and number of coke pushing operations for 6-meter and 7.63-meter coke ovens (with an annual production of 2.2 million tons of coke). Unit of measurement: Number of oven chambers, number of times coke is taken out per day, number of oven doors, number of charging ports, number of rising pipe ports – all in individual counts. 6-meter coke oven: 220, 29, 44, 40, 88, 0; 220. 7.63-meter coke oven: 140, 135, 280, 560, 140. Ratios: 157%, 218%, 157%, 157%, 157%