Method of and apparatus for combusting coal-water mixture
    5.
    发明授权
    Method of and apparatus for combusting coal-water mixture 失效
    燃煤混合水的方法和设备

    公开(公告)号:US4741279A

    公开(公告)日:1988-05-03

    申请号:US1166

    申请日:1987-01-07

    IPC分类号: F23C7/00 F23D1/00

    摘要: A method of combusting a coal-water mixture fuel. The mixture is atomized into a conically-shaped primary pre-combustion chamber. Primary air is supplied, at a rate smaller than that required for complete burning of the mixture and in the form of a swirl about the axis of the jet of the atomized mixture, from the peripheral portion of the primary pre-combustion chamber into a secondary pre-combustion chamber connected to said primary pre-combustion chamber, thus forming a region of low pressure around the jet of the mixture. The region of low pressure serves to induce the atmosphere gas from the secondary pre-combustion chamber of higher temperature back into the primary pre-combustion chamber of a lower temperature, so that the water content of the mixture is evaporated and the mixture is ignited by the heat of the hot atmosphere gas. Then, the mixture is burnt in the secondary pre-combustion chamber in the presence of the remainder portion of the primary air, at a comparatively small air-to-ratio, so that a region of a reducing atmosphere is formed to suppress the generation of NOx. Then, secondary air is supplied, in the form of a swirl about the axis of the jet of the mixture and at a rate sufficient to completely burn the mixture, into the furnace connected to the secondary pre-combustion chamber, thus completely combusting the coal-water mixture.

    摘要翻译: 一种燃烧煤 - 水混合燃料的方法。 将混合物雾化成锥形初级预燃烧室。 一次空气以比完全燃烧混合物所需的速度小并且以围绕雾化混合物的射流的轴线的漩涡的形式从初级预燃烧室的周边部分供给到次级 预燃烧室连接到所述初级预燃烧室,从而在混合物的射流周围形成低压区域。 低压区域用于将来自较高温度的次级预燃烧室的气氛气体引回到较低温度的初级预燃烧室中,使得混合物的水分被蒸发并且混合物被点燃 热气氛气体的热量。 然后,在空气比比较小的情况下,在一次空气的剩余部分的存在下,在二次预燃烧室中燃烧混合物,从而形成还原气氛的区域, NOx。 然后,将二次空气以围绕混合物的射流轴线的涡旋的形式以足以完全燃烧混合物的速率供应到连接到二次预燃烧室的炉中,从而完全燃烧煤 - 水混合物。

    Furnace system
    10.
    发明授权
    Furnace system 失效
    炉系统

    公开(公告)号:US4653998A

    公开(公告)日:1987-03-31

    申请号:US694744

    申请日:1985-01-25

    IPC分类号: F23N5/00 F23N5/08 G01J1/42

    摘要: A furnace system connected to a burner including a furnace for burning a fuel and air ejected from the burner into the furnace to produce a flame therein, and a combustion condition determining device for determining the conditions of combustion of the fuel in a zone of the flame extending along different strata thereof by collecting light in the flame at one point in the flame by moving such point. Signals outputted by the combustion condition determining device are utilized for monitoring or controlling the flame and controlling exhaust emission control devices for controlling exhaust emissions produced by the combustion of the fuel. Control of the conditions of combustion of the flame can be effected quickly with a high degree of precision by monitoring the flame.

    摘要翻译: 一种连接到燃烧器的炉系统,包括用于燃烧燃料的炉和从燃烧器喷射到炉中以在其中产生火焰的燃烧空气;以及燃烧条件确定装置,用于确定燃料在火焰区域中的燃烧条件 通过移动这些点,在火焰的一个点处在火焰中收集光,沿不同的层延伸。 由燃烧条件确定装置输出的信号用于监视或控制火焰和控制废气排放控制装置,以控制由燃料燃烧产生的废气排放。 通过监视火焰可以高精度地快速实现对火焰燃烧条件的控制。