| 摘要 |
PURPOSE: To reduce discharge amount of pollutants discharged into the atmosphere by circulating a mixed waste gas of wind boxes of front and rear parts to an intermediate part of sintering machine bed so that the circulated mixed waste gas is exhausted to stack. CONSTITUTION: The bisected main ducts are independently connected to two main blowers (11) by dividing a main duct which sucks waste gas of sintering machine to transfer the waste gas to stack of the sintering machine into upper and lower main ducts and dividing a wind box (7) connected to the main duct into front part (13), intermediate part (14) and rear part (15) having proper length. The mixed waste gas is circulated to a circulation part (16) of an intermediate part of sintering machine bed by mixing waste gas having high temperature and low moisture content of wind boxes of the rear part with the waste gas having low temperature and high moisture content of wind boxes of the front part in a proper mixing ratio. The Waste gas, sucked in wind boxes of the intermediate part, passes through dust collector (10) and the main blowers so that the waste gas is exhausted to the sintering machine stack (12) so as to reduce an amount of exhaust gas containing pollutants discharged into the atmosphere.
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