| 摘要 |
PROBLEM TO BE SOLVED: To provide an exhaust gas purifying device capable of releasing ammonia from a storage material in an ammonia storage tank without increasing power consumption.SOLUTION: The exhaust gas purifying device 1 includes a selective reduction catalyst (SCR) 6 disposed on the way of an exhaust pipe 3 connected with an engine 2, an injector 8 for adding NHto an upstream side of SCR6 in the exhaust pipe 3, the ammonia storage tank 10 connected to the injector 8 through a supply pipe 9 and including the storage material storing NH, and a pressure pump 11 for pressurizing the inside of the ammonia storage tank 10 by the outside air (air). By disposing the pressure pump 11, as a pressure in the ammonia storage tank 10 is increased, and a temperature in the ammonia storage tank 10 rises, NHstored in the storage material is released from the storage material. |
