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    Method of and apparatus for combusting coal-water mixture
    9.
    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

    申请人： Shigeru Azuhata ,  Kazutoshi Higashiyama ,  Kiyoshi Narato ,  Hironobu Kobayashi ,  Norio Arashi ,  Tooru Inada ,  Kenichi Sohma ,  Keizou Ohtsuka ,  Yoshitaka Takahashi ,  Fumio Koda ,  Tadahisa Masai ,  Masakiyo Tanikawa ,  Kei Kawano

    发明人： Shigeru Azuhata ,  Kazutoshi Higashiyama ,  Kiyoshi Narato ,  Hironobu Kobayashi ,  Norio Arashi ,  Tooru Inada ,  Kenichi Sohma ,  Keizou Ohtsuka ,  Yoshitaka Takahashi ,  Fumio Koda ,  Tadahisa Masai ,  Masakiyo Tanikawa ,  Kei Kawano

    IPC分类号： F23C7/00 ,  F23D1/00

    CPC分类号： F23D1/005 ,  F23C7/004 ,  F23C2202/40

    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。