| 摘要 |
A spray dryer disperser (24, 26, 28, 30) is described for use in a spray dryer absorption (SDA) system (18) for flue gas FG impurity reduction. As such, the spray dryer disperser (24, 26, 28, 30) disperses absorbent liquid or reagent slurry droplets into contact with a hot flue gas FG stream containing gaseous impurities to produce a flue gas FG stream of reduced impurity content and dry powder end products EP. The spray dryer disperser (24, 26, 28, 30) is useful in larger capacity SDA vessels (22) of approximately 12 to 22 meters in diameter or larger, to avoid disperser (24, 26, 28, 30) shroud (34a) scale deposits, to avoid reagent slurry spray cloud suppression, to avoid vessel (22) wall (22b) scale deposits and to achieve increased droplet rotational momentum for increased droplet flue gas FG penetration for efficient impurity reduction. |
