Method for controlling exhaust gases in oxygen blown converter

Details Method for controlling exhaust gases in oxygen blown converter Method for controlling exhaust gases in oxygen blown converter

1976-12-20

1980-03-11

Bell, Paul A.

Metallurgical apparatus

Process

266158, C22B 540

Patent

active

041924860

ABSTRACT:
A method for recovering unburnt exhaust gases in an oxygen converter, is described, which involves the control of an exhaust gas damper by means of a control signal obtained by signal-processing, in accordance with set functional formulae, an exhaust gas damper control signal obtained from the pressure differential between the converter throat pressure and atmospheric pressure, and an exhaust gas damper prediction control signal obtained by continuously detecting the quantities of oxygen fed and of secondary raw material charged, as well as the composition of the exhaust gases and the flow rate of exhaust gases. With this signal processing the quantity of furnace generated gases and the quantity of combustion exhaust gases at the converter throat are calculated and the degree of optimum aperture of the converter damper is controlled.

REFERENCES:
patent: 3227141 (1966-01-01), Fahie
patent: 3559970 (1971-02-01), Hamabe et al.

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