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PULVERIZED COAL BOILER, PULVERIZED COAL BOILER SYSTEM, AND PULVERIZED COAL BURNER

机译:煤粉锅炉,煤粉锅炉系统和煤粉燃烧器

摘要

PURPOSE:To provide a burner structure and a boiler system in which the burner structure and the boiler system are especially suitable for reducing the generation of NOx CONSTITUTION:In a boiler system in which a pulverized coal burner is provided on the side wall of a fire furnace, a burner is constituted so as to distribute the pulverized coal concentration in the mixture flow of the pulverized coal blown out of a pulverized coal blow-out port and the primary air higher in the outside and lower in the center of the mixture flow. The reduction area of NOx can be extended and NOx can be reduced by blowing out the pulverized coal with a distribution of its concentration. The easiness of ignition can be improved and the combustion efficiency at a low load can be improved.
机译:目的:提供一种燃烧器结构和锅炉系统,其中该燃烧器结构和锅炉系统特别适合于减少NOx的产生。组成:在一种锅炉系统中,其中在火炉的侧壁上设有煤粉燃烧器在该炉中,构成燃烧器,以使粉煤浓度分布在从粉煤排出口吹出的粉煤和一次空气的混合流中,该一次空气在外部较高而在混合流的中央较低。通过吹出具有其浓度分布的粉煤,可以扩大NOx的还原面积并且可以还原NOx。可以提高点火的容易性,并且可以提高低负荷下的燃烧效率。

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