POWER PLANT WITH SELECTIVE CATALYTIC REUCTION SYSTEM

摘要

The present invention relates to a power device including a selective catalyst reducing system. A power device including a selective catalyst reducing system according to an embodiment of the present invention includes a first engine exhausting an exhaust gas used as a main power source and containing nitrogen oxide; a first exhaust passage through which the exhaust gas of the first engine flows; a reactor installed in the first exhaust passage and including a catalyst for reducing the nitrogen oxide contained in the exhaust gas; a reducing agent spraying unit spraying a reducing agent to the exhaust gas flowing to the reactor inside the first exhaust passage; a dissolving chamber generating the reducing agent to be supplied to the reducing agent spraying unit; a circulation passage partly flowing the exhaust gas penetrated through the reactor from the first exhaust passage and recirculating the exhaust gas to the dissolving chamber; a second engine used as a sub power source for power generation and exhausting an exhaust gas at high temperatures relatively higher than the first engine; and a second exhaust passage connected to the circulation passage to supply the exhaust gas of the second engine to the dissolving chamber.