Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1978-04-28
1980-11-18
Nozick, Bernard
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
55 84, 55213, 55226, 60 3902, 60 3946R, 266 89, 266159, 266197, 261DIG54, C21B 500
Patent
active
042343356
ABSTRACT:
A washer having a controlled-gap scrubber is connected to the gas outlet of a pressure blast furnace and an expansion turbine for the recovery of energy is connected downstream of the controlled-gap washer unit while a bypass is connected across the turbine. The system has operating regions A and B on a diagram in which the gas pressure is plotted along the ordinate and the volume rate of flow of gas from said blast furnace is plotted along the abscissa, the region A being defined between the turbine-insertion and the turbine-operating characteristic curves plotted on the diagram, the region B being defined between the turbine-operating characteristic curve and the corrected blast-furnace characteristic curve. The pressure in the blast furnace where the operating point is in region A while the gas traverses the turbine is controlled by varying the gap width of said control-gap washer unit in response to the pressure. The pressure in said blast furnace when the operating point is in the region B is controlled by varying the cross-section of the bypass valve, the gap of the washer being controlled in response to the differential pressure thereacross.
REFERENCES:
patent: 4007025 (1977-02-01), Hegemann
patent: 4052042 (1977-10-01), Hegemann
patent: 4055331 (1977-10-01), Hegemann
patent: 4067557 (1978-01-01), Inubishi et al.
Hegemann Karl-Rudolf
Niess Theodor
Weissert Helmut
Gottfried Bischoff Bau kompl. Gasreinigungs- und Wasserruuhlanla
Nozick Bernard
Ross Karl F.
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