| 摘要 |
<p>Injecting a liquid reducing agent into a flue gas channel upstream of a catalyst comprises directing the flow of flue gas from a heater to injection lances, injecting metered amounts of the reducing agent through the lances into the flue gas channel, evaporating the reducing agent with one evaporator per lance, mixing the flue gas and reducing agent in a mixing zone, and smoothing and directing the flow of flue gas ahead of the catalyst. An independent claim is also included for apparatus for carrying out the above process, comprising a heater (8), a flow director (2), injection lances (3) with evaporators (4), a mixing zone (5), a flow conditioner (6) and a catalyst (7), these components being connected together by the flue gas channel (1).</p> |
