| 摘要 |
A fluid dosing device (57) for introducing a fluid into a gas flow having a given flow direction, the dosing device comprising: input means (66) for receiving the fluid from a source of fluid; nozzle means (62) for injecting the fluid into the gas flow, the nozzle means comprising valve means (132) arranged to move between a first position in which the valve means seals the nozzle means and a second open position in which injection of fluid into the gas flow can take place wherein the fluid dosing device is arranged to inject fluid into the gas flow in a direction having at least a component which is counter to the flow direction of the gas flow. |
