Method and apparatus for reduced NOx emissions from coal furnaces
    222.
    发明公开
    Method and apparatus for reduced NOx emissions from coal furnaces 失效
    Verfahren und Vorrichtung zur Verminderung des NOx-Gehaltes in Kohlenofenabgasen。

    公开(公告)号:EP0225157A2

    公开(公告)日:1987-06-10

    申请号:EP86309192.2

    申请日:1986-11-25

    Inventor: Markstein, Josef

    Abstract: The present invention discloses a method of, and apparatus for, reducing NOx emissions from black coal fired updraught furnaces (20). The pulverised coal is entrapped in the "primary air" and separated into two streams, one fuel rich (13) and one fuel lean (15). These streams are introduced into the furnace (20) via a corresponding burner(s) (14,16) with the burner(s) (16) for the fuel lean stream (15) being located at an elevation above the burner(s) (14) for the fuel rich stream (13).
    The apparatus comprises a concentrator (3) positioned between the substantially conventional mill (1) and furnace (20) and arranged to split the primary air and entrapped fuel into the two abovementioned streams. The concentrator preferably includes a classifier (8) and takes the form of a swirl generator (5) and radially positioned outlets which make use of the action of centrifugal force on the "primary air" and entrapped coal particles to bring about the desired separation.

    Abstract translation: 本发明公开了一种减少黑煤焚烧炉(20)的NOx排放的方法和装置。 粉煤被夹带在“一次空气”中,分为两股,一种是富油(13)和一种燃料稀(15)。 这些流体经由相应的燃烧器(14,16)被引入炉子(20),燃烧器(16)用于燃料贫质流(15)位于燃烧器上方的高度, (14),用于富燃料流(13)。 该设备包括位于基本上常规的磨机(1)和炉(20)之间并且将一次空气和夹带的燃料分离成两个上述流的浓缩器(3)。 集中器优选地包括分级器(8)并且采取漩涡发生器(5)的形式和径向定位的出口,其使用离心力作用在“一次空气”和夹带的煤颗粒上以产生期望的分离。

    粉煤燃燒器
    225.
    实用新型
    粉煤燃燒器 失效
    粉煤燃烧器

    公开(公告)号:TW313247U

    公开(公告)日:1997-08-11

    申请号:TW085218735

    申请日:1995-03-16

    IPC: F23D

    CPC classification number: F23D1/00 F23C6/047 F23C9/006 F23C2201/301 F23K3/02

    Abstract: 一種粉煤燃燒器,包括粉煤噴嘴,及與粉煤噴嘴成同心關係設置的次級和三級空氣噴嘴。火焰穩定環被設置於粉煤噴嘴的出口端。分離壁被設置於粉煤噴嘴內而將粉煤噴嘴內的通道分成兩通道。粉煤/空氣混合物平直流動通過兩通道,使得粉煤/空氣混合物的再循環流動形成於粉煤噴嘴的出口端附近。結果,增進粉煤的點火性及燃燒率,因而減少 N O x的排出量。

    Abstract in simplified Chinese: 一种粉煤燃烧器,包括粉煤喷嘴,及与粉煤喷嘴成同心关系设置的次级和三级空气喷嘴。火焰稳定环被设置于粉煤喷嘴的出口端。分离壁被设置于粉煤喷嘴内而将粉煤喷嘴内的信道分成两信道。粉煤/空气混合物平直流动通过两信道,使得粉煤/空气混合物的再循环流动形成于粉煤喷嘴的出口端附近。结果,增进粉煤的点火性及燃烧率,因而减少 N O x的排出量。

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