Method and device for exhausting gases or fumes from a metallurg

Details Method and device for exhausting gases or fumes from a metallurg Method and device for exhausting gases or fumes from a metallurg

1993-07-28

1994-03-01

Reynolds, Bruce A.

Industrial electric heating furnaces

Environmental control

Arc furnace

266144, 110162, B08B 1300, C21B 1312, F27B 308, F27D 1700

Patent

active

052915131

ABSTRACT:
The inside of the metallurgical container is connected to a fan (105) through an exhaust duct (102). An additional gas is introduced in the intake part of the fan (105) preferably through the duct (102). The additional gas introduction flow is regulated in such manner that the gas pressure in the intake part of the fan (105) is maintained at a fixed value, via an adjusting valve (108) preferably placed in an additional duct (107) connected to the exhaust duct (102). A control system (110) regulates the opening and closing of the adjusting valve (108) in such manner as to maintain the gas pressure in the intake part of the fan (105) constant.

REFERENCES:
patent: 3570831 (1971-03-01), Rouanet
patent: 3617043 (1971-11-01), Hirao
patent: 4402303 (1983-09-01), Koenneman
patent: 4437186 (1984-03-01), Inai
patent: 4450569 (1984-05-01), Hagendoorn
patent: 4477910 (1984-10-01), Nijhawan et al.

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