Apparatus for coal combustion
    7.
    发明授权
    Apparatus for coal combustion 失效
    燃煤装置

    公开(公告)号:US4545307A

    公开(公告)日:1985-10-08

    申请号:US617188

    申请日:1984-06-04

    IPC分类号: F23C99/00 F23D1/00 F23D1/02

    CPC分类号: F23D1/02

    摘要: A coal combustion apparatus capable of improving NO.sub.x reduction to a large extent is provided, which apparatus comprises a pulverized coal-feeding pipe (abbreviated to coal pipe) inserted into a burner throat on the lateral wall of a combustion furnace and for feeding the coal and air into the furnace; a means for feeding the coal and air into the coal pipe; a secondary air passageway formed between the coal pipe and a secondary air-feeding pipe provided on the outer peripheral side of the coal pipe; a ternary air passageway formed on the outer peripheral side of the secondary air-feeding pipe; a means for feeding air or an oxygen-containing gas into the secondary air passageway and that into the ternary air passageway; and a bluff body having a cross-section of a L-letter form provided at the tip end of the coal pipe.

    摘要翻译: 提供了能够大幅度地提高NOx还原的煤燃烧装置,该装置包括:插入到燃烧炉的侧壁的燃烧器喉部并供给煤的粉煤供给管(缩写为煤管) 空气进入炉子; 将煤和空气送入煤管的一种手段; 在煤管与设置在煤管的外周侧的二次空气供给管之间形成的二次空气通路; 形成在二次空气供给管的外周侧的三元空气通路; 用于将空气或含氧气体进入二次空气通道和进入三元空气通道的装置; 以及设置在煤管的前端的具有L字形的横截面的非流线形体。