| 摘要 |
An apparatus for removing SO2 and/or NO x from an exhaust gas formed by the combustion of oil is provided herein. The apparatus includes a conduit for discharging the exhaust gas to the open air, and a screen portion fitted to the conduit across the conduit. The screen portion accommodates an activated carbon which comprises both carbon microcrystals which are irregularly arranged and difficult ly-graphitizable carbon which includes crosslinking lattices in the gaps among carb on microcrystals. The activated carbon has a pencil hardness of from B to 6B, a por e size of 100-400 .ANG., a specific surface area of 150-500 m2/g, and a pore volum e of 1.3-5.0 ml/g. A first end of the screen portion is open to the outside, and has a means for feeding new activated carbon thereinto. A second end of the screen portion is also open to the outside, and includes a means for discharging used activated carbon therefrom near the second end opening. Means are provided for controlling the feeding of the new activated carbon and the discharging of the u sed activated carbon by detecting the amount of the discharged used activated carbon .
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