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    • 7. 发明专利
    • PROCESS AND APPARATUS FOR FEEDING COAT INTO COKE OVEN
    • JPH10245564A
    • 1998-09-14
    • JP6199097
    • 1997-02-28
    • KAWASAKI STEEL CO
    • HANAOKA KOJIIGAWA KATSUTOSHITANMACHI KENICHI
    • C10B31/00C10B31/12C10B57/06C10B57/12
    • PROBLEM TO BE SOLVED: To obtain coke having strength uniform in the direction of the width of a coke oven by feeding coal into the oven while an additive which can increase the strength of coke as a result of an increased bulk density is being sprayed onto only that coal which is fed into the central part in the direction of the width of the oven or near from a spray nozzle provided in a feeding cylinder. SOLUTION: In feeding the taken-off coal is fed into the inside of a coke oven from a hopper through a table feeder 2 through a feeding cylinder 3, 0.005-5wt.%, based on the coal, additive A (e.g. surfactant or oil) is added to the coal through a spray nozzle 5 from header 4 provided on the bottom of the cylinder 3. The header 4 is adapted so that the rate of its plane projection area to the cylinder 3 may be 15% or below. Additive A is added to only that part of the coal which is fed into the central part in the direction of the width of the oven or near to increase the bulk density of that part, whereupon coke having strength uniform in the direction of the width of the oven can be produced stably. The surfactants used include polyoxyethylene alkyl ethers and polyoxyethylene alkyl phenols, and the oil used is tar oil.