The present technology is generally directed to coal charging systems used with coke ovens. In some embodiments, a coal charging system includes a charging head having opposing wings that extend outwardly from the charging head, leaving an open pathway through which coal may be directed toward side edges of the coal bed. In other embodiments, an extrusion plate is positioned on a rearward face of the charging head and oriented to engage and compress coal as the coal is charged along a length of the coking oven. In other embodiments, charging plates extend outwardly from inward faces of opposing wings.

A closed system for gaining sellable petroleum coke pieces out of solidified petroleum coke in a coke drum unit, comprises a coke drum unit containing solidified petroleum coke; a coke crushing unit for crushing petroleum coke into sellable petroleum coke pieces; a closed slurry pipe leading petroleum coke slurry to a closed slurry pit; a dewatering bin unit for receiving petroleum coke slurry from the slurry pit, for collecting the sellable petroleum coke pieces and for leading filtered water and petroleum coke fines out of it; a closed drain water pit, separate from the slurry pit, for receiving the filtered water and the petroleum coke fines from the dewatering bin unit; a water settling tank receiving the filtered water and the petroleum coke from the drain water pit and for separating the petroleum coke fines from the water such that the petroleum coke fines collect in the bottom part of the water settling tank, and for leading the petroleum coke fines into the slurry pit where they mix with the petroleum coke slurry; a clean water tank for receiving the purified water from the upper part of the water settling tank; and a removal unit for removing the sellable petroleum coke pieces from the dewatering bin unit.

A closed system for gaining sellable petroleum coke pieces out of solidified petroleum coke in a coke drum unit, comprises a coke drum unit containing solidified petroleum coke; a coke crushing unit for crushing petroleum coke into sellable petroleum coke pieces; a closed slurry pipe leading petroleum coke slurry to a closed slurry pit; a dewatering bin unit for receiving petroleum coke slurry from the slurry pit, for collecting the sellable petroleum coke pieces and for leading filtered water and petroleum coke fines out of it; a closed drain water pit, separate from the slurry pit, for receiving the filtered water and the petroleum coke fines from the dewatering bin unit; a water settling tank receiving the filtered water and the petroleum coke from the drain water pit and for separating the petroleum coke fines from the water such that the petroleum coke fines collect in the bottom part of the water settling tank, and for leading the petroleum coke fines into the slurry pit where they mix with the petroleum coke slurry; a clean water tank for receiving the purified water from the upper part of the water settling tank; and a removal unit for removing the sellable petroleum coke pieces from the dewatering bin unit.