Slag quenching system for pyrolysis furnaces

Details Slag quenching system for pyrolysis furnaces Slag quenching system for pyrolysis furnaces

C - Chemistry, Metallurgy

03

B

39/1, 39/116

C03B 37/00 (2006.01) C21B 3/08 (2006.01) F23J 1/08 (2006.01) F23J 9/00 (2006.01)

Patent

CA 1074110

SLAG QUENCHING SYSTEM FOR PYROLYSIS FURNACES ABSTRACT A process for quenching molten residue discharged from a furnace hearth, through a non-submerged taphole, including the steps of: (a) providing a vertical slag duct in sealed communication at the top with the taphole and sealed at the bottom by being immersed a substantial distance into water in a quench tank, (b) flowing the molten residue from the hearth by gravity down the central axis of said slag duct and quenching it in the water contained in the submerged portion of the slag duct, said water being at a temperature sufficiently high to prevent slag explosions, wherein the improvement comprises: substantially reducing cooling of the tap and hearth areas of said furnace by removing hot fluid from said duct and replacing same with cooler fluid, thereby substantially preventing steam generated by quenching of said molten residue in the water contained in the submerged portion of said duct from entering said tap and hearth areas.

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