| 摘要 |
The invention concerns a process for cleaning of flue gases, wherrein a solid material separated from a pre-separator (8) is transferred into an activation device (11) placed after the pre-separator (8), which crushes the pre-separated material particles to smaller particles, whereby the CaSO4 crust placed around CaO is broken and the CaO is liberated for a hydration reaction. In the process the crushed dust-like material that contains CaO is transferred from the activation device (11) downstream into a reactor (16), which is placed after the flue-gas pre-separator (8) in the direction of flow of the flue gases. In the process the CaO particles are hydrated substantially in the reactor (16) by introducing the CaO particles through nozzles (14a) into a drop zone (A) in the reactor (16), into which zone the water is also introduced through nozzles (17a), whereby the CaO reacts immediately with the water, and the Ca(OH)2 formed reacts further with the flue gas made to flow in the reactor (16) and binds SO2 contained in the flue gas. The invention also concerns equipment for cleaning of flue gases. |
