Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1974-10-15
1977-01-11
Rosenberg, P. D.
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
75 59, C21C 538
Patent
active
040024679
ABSTRACT:
This disclosure teaches a method for recovering reaction gases from a hydrocarbon-cooled converter which is bottom blown by oxygen. The converter comprises a vessel which is tippable between an upright position and an inclined position. The vessel is provided with bottom tuyeres and a cleaning system for the reaction gases. The method is characterized by the fact that, on tipping of the vessel, nitrogen is introduced instead of the oxygen through the bottom tuyeres whereby flushing of the cleaning system is effected. Detection means (preferably a gas analyzer) are provided to detect a predetermined increase in hydrogen content of the reaction gases during blowing and a setting ring is connectable to the vessel in sealed engagement with a suction line which forms part of the cleaning system. Control means are responsive to the detection means and are operable to connect the setting ring to the vessel and for tipping the vessel so as to flush the cleansing system. The setting ring has a labyrinth seal which permits entrance of a minor portion of air but assures a vacuum of -5 to -15 mm during the blowing.
REFERENCES:
patent: 3154406 (1964-10-01), Allard
patent: 3706549 (1972-12-01), Knuppel
patent: 3854932 (1974-12-01), Bishop
patent: 3856510 (1974-12-01), Nilles
Baxley Charles E.
Rosenberg P. D.
Verfahrenstechnik Dr.-Ing. Kurt Baum
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