EXHAUST SYSTEM FOR CORROSION OF SCR CHAMBER

摘要

The present invention relates to an exhaust system capable of preventing corrosion of an SCR chamber, which can minimize corrosion in the SCR chamber by removing an exhaust gas remaining in the chamber forcibly by introducing external air after blocking the SCR chamber. The exhaust system capable of preventing corrosion of the SCR chamber according to the present invention includes: an SCR inflow line (20) which is extended by being connected to the way of an exhaust pipe (10) connected to an exhaust side of an engine (2); the SCR chamber (30) installed at the SCR inflow line (20); an exhaust path opening and closing valve (12) installed at the exhaust pipe (10) at a lower side of a connection point of the SCR inflow line (20); an SCR exit line (40) which is extended from an exit of the SCR chamber (30) and is connected to the exhaust pipe (10) at the lower side of the exhaust path opening and closing valve (12); a first SCR opening and closing valve installed at the SCR inflow line (20) and a second SCR opening and closing vlave (42) installed at the SCR exit line (40); an air blower (50) for blowing air; an air blowing line (54) for discharging the exhaust gas remaining in the SCR chamber (30) by blowing the air blown from the air blower (50) into the SCR chamber (30); and an air blowing line opening and closing valve (52) installed at the air blowing line (54).