| 摘要 |
Method of and an arrangement (10, 100) for feeding ammonia containing fluid into an exhaust gas passage (22) of a combustion plant comprising a first fluid line (40) connectable in flow connection with a source of an ammonia containing fluid (14), a second fluid line (42) in flow connection with a source of a dilution fluid (12) and a control unit (38, 380) for controlling multiple valve members of a valve unit (30), each of the valve members having a first inlet (34, 340) in flow connection with the first fluid line, a second inlet (32, 320) in flow connection with the second fluid line and an outlet (36, 360) in flow connection with an outlet channel (48, 480) connected to the exhaust gas passage (22), wherein the valve members are connected in parallel so that the outlet of each of the valve members is in flow connection with a common outlet channel (48, 480), wherein the control unit is adapted for controlling each of the valve members to maintain open flow path from either the first inlet (34, 340) or the second inlet (32, 320) to the outlet (36, 360) so as to feed a flow of either the ammonia containing fluid or the dilution fluid via the valve member to the outlet channel (48, 480). |
