Revamping of emission control system / HTQ System SeAH Besteel / Korea operates two 80t AC EAF’s at their melt shop in Gunsan Both Electric Arc Furnaces were equipped with identical DEC (Direct Evacuation Control) systems composed each of an elbow, a straight elbow duct, a combustion chamber, long water cooled ducts, a gas cooler with booster fan, and a pulse jet bag filter. The picture on the right shows the complexity of the old system. Due to

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