Reverse cleaning regeneration type exhaust emission control device and method of regenerating the same

摘要

A reverse cleaning regeneration type exhaust emission control device comprises two exhaust emission routes communicated with an inlet port of an exhaust emission and comprised of a first path A having a filter A1, a valve A2 and a nozzle A3 and a second path B having a filter B1, a valve B2 and a nozzle B3, and a third path C arranged at an upstream side of the filters A1 and B1 separately from the exhaust emission path extending from the inlet port of the exhaust emission and having a filter C1, a valve C2 and a nozzle C3. The reverse cleanings of the filters A1 and B1 are alternately carried out during the working of the device.