Exhaust gas denitrifying system having noise-reduction structure

An exhaust gas denitrifying system having a noise-reduction structure, comprising:

• a reactor in which a chemical reaction that converts nitrogen oxides included in exhaust gas into nitrogen by denitrifying the nitrogen oxides using a catalyst takes place, the reactor comprising:
• a catalytic filter unit coated with a catalyst and provided with a plurality of through-holes through which exhaust gas passes;
• a noise-absorbing material layer disposed in front of the catalytic filter unit and formed to a predetermined thickness along an inner surface of the reactor;
• and
• a noise-reducing unit for removing noise from the exhaust gas denitrified by the catalytic filter unit,
• the noise-reducing unit including a plurality of partitions disposed at a rear side of the catalytic filter unit in the reactor at regular intervals in parallel to the flow of the exhaust gas, wherein the plurality of partitions disperse the flow of the exhaust gas denitrified by the catalytic filter unit and absorb noise to improve a noise-reducing effect,
• each of the partitions including a noise-absorbing member for absorbing noise;
• and support plates disposed on both sides of the noise-absorbing member to support the noise-absorbing member and provided with a plurality of holes,
• whereby the reactor denitrifies the nitrogen oxides, and simultaneously reduces the noise, thus reducing the size of the exhaust gas denitrifying system.