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尿素 (硝铵 )塔式造粒过程中对喷嘴的要求 :( 1 )不形成局部喷洒、应满塔喷洒且不粘塔。喷出的液滴一旦粘壁 ,会影响造粒效果 ,同时使有效塔径变小。在清理塔壁时 ,不仅难度大 ,还容易造成伤亡事故。若小截面局部喷洒 ,造成冷却空气“走短路”现象 ,导致热交换效率下降 ,出料温
Urea (ammonium nitrate) tower granulation process nozzle requirements: (1) do not form a partial spray, should be full tower spray and not sticky tower. Once the sprayed droplets sticky wall, will affect the granulation effect, while making the effective tower diameter smaller. In the tower wall cleaning, not only difficult, but also easy to cause casualties. If the small section of the local spraying, resulting in cooling air “short-circuit” phenomenon, resulting in decreased heat exchange efficiency, the material temperature