Powered fuel combustion burner with nozzle flow guide
    2.
    发明授权
    Powered fuel combustion burner with nozzle flow guide 失效
    动力式燃油燃烧器,带喷嘴导流器

    公开(公告)号:US6152051A

    公开(公告)日:2000-11-28

    申请号:US51744

    申请日:1998-04-20

    IPC分类号: F23D1/00 F23C1/10

    摘要: A combustion burner includes a mixture nozzle, a gas supply nozzle, and a flow guide. The mixture nozzle extends toward an interior of a furnace, and defines a mixture passage through which a mixture containing powdered solid fuel and gas for transferring the solid fuel flows. A distal end portion of the mixture nozzle is flared so that a flow passage area of the mixture passage increases progressively in a direction of flow of the mixture. The gas supply nozzle radially surrounds the mixture nozzle to define between the gas supply nozzle and the mixture nozzle a gas passage through which a combustion oxygen-containing gas flows toward the furnace. The flow guide is provided within the mixture nozzle at a position upstream of the flared portion of the mixture nozzle with respect to a flow of the mixture so as to make the mixture flow straight along an inner peripheral surface of the flared portion of the mixture nozzle.

    摘要翻译: PCT No.PCT / JP97 / 01489 Sec。 371日期:1998年4月20日 102(e)1998年4月20日PCT 1997年4月30日PCT PCT。 公开号WO98 / 08026 日期1998年2月26日燃烧器包括混合喷嘴,气体供给喷嘴和流动引导件。 混合物喷嘴朝向炉内部延伸,并且限定了混合物通道,含有固体燃料和固体燃料的混合物的混合物通过该混合通道流动。 混合喷嘴的远端部分展开,使得混合物通道的流动通道面积在混合物的流动方向上逐渐增加。 气体供给喷嘴径向地包围混合喷嘴,以在气体供给喷嘴和混合喷嘴之间限定燃烧含氧气体通过其流向炉的气体通道。 在混合喷嘴内,相对于混合物的流动,在混合喷嘴的扩口部分的上游位置处设置流动引导件,以使混合物沿着混合喷嘴的扩口部分的内周表面直线流动 。

    Combustion apparatus
    5.
    发明授权
    Combustion apparatus 失效
    燃烧装置

    公开(公告)号:US5263426A

    公开(公告)日:1993-11-23

    申请号:US835456

    申请日:1992-03-02

    IPC分类号: F23D1/00 F23C99/00 F23D17/00

    CPC分类号: F23D17/00 F23D1/00

    摘要: A combustion apparatus including a mixture feeding pipe for injecting a mixture of pulverized coal and combustion air into a furnace, with the mixture then being ignited. A radially outwardly flared flame maintaining ring is provided at a tip end of the mixture feeding pipe, with the maintaining ring being exposed to a reduced atmosphere and to high temperatures due to radiant heat from the furnace. A projection extends into the furnace beyond the flame maintaining ring so as to protect the flame maintaining ring from radiation from inside the furnace thereby suppressing an excessive increase in temperature. Combustion air flows along a surface of the projection so as to provide at oxidized atmosphere. A pulverized coal/air separating member extends within the mixture feeding pipe, and a portion or separation of the flow forcibly occurs is locally formed in a conical end portion of the pulverized coal/air separating member, whereby it is possible to effect a complete combustion in a stabilized manner regardless of the unit capacity and load of the combustion apparatus.

    摘要翻译: PCT No.PCT / JP91 / 00868 Sec。 371日期:1992年3月2日 102(e)1992年3月2日PCT PCT 1991年6月27日PCT公布。 公开号WO92 / 00489 日期:1992年1月9日。一种燃烧装置,包括用于将粉煤和燃烧空气的混合物喷射到炉中的混合物进料管,然后混合物被点燃。 在混合物供给管的顶端设有径向向外扩张的火焰保持环,保持环由于来自炉的辐射热而暴露于降低的气氛和高温。 突出部分延伸到熔炉之外超过火焰保持环,以保护火焰保持环免受炉内的辐射,从而抑制温度的过度升高。 燃烧空气沿着突起的表面流动,以便在氧化气氛下提供。 粉煤/空气分离构件在混合物供给管内延伸,并且强制发生的流动的一部分或分离局部形成在粉煤/空气分离构件的锥形端部中,由此可以实现完全燃烧 不管燃烧装置的单位容量和负载如何,均以稳定的方式进行。

    Combustion apparatus
    6.
    发明授权
    Combustion apparatus 失效
    燃烧装置

    公开(公告)号:US5431114A

    公开(公告)日:1995-07-11

    申请号:US121423

    申请日:1993-09-16

    IPC分类号: F23D1/00 F23C99/00 F23D17/00

    CPC分类号: F23D17/00 F23D1/00

    摘要: A combustion apparatus including a mixture feeding pipe for injecting a mixture of pulverized coal for combustion air into a furnace, with the mixture being then ignited. A first gas feeding passage is disposed outwardly of the mixture feeding pipe for feeding oxygen-containing gas into the furnace, with a second gas feeding passage being disposed between the gas feeding passage and the mixture feeding pipe, in a radial direction, for feeding the oxygen-containing gas into the furnace. A projection is disposed between the gas feeding passage and the mixture feeding pipe and extends at an exposed end surface thereof into the furnace beyond an exposed end of the mixture feeding pipe, with the projection being hollow for allowing the oxygen-containing gas to flow within the projection.

    摘要翻译: 一种燃烧装置,包括用于将燃烧空气的粉煤的混合物注入炉中的混合物进料管,然后将该混合物点燃。 第一气体供给通道设置在混合物供给管的外部,用于将含氧气体输送到炉中,第二气体供给通道沿径向方向设置在供气通道和混合物供给管之间,用于将 含氧气体进入炉内。 在气体供给通道和混合物供给管之间设置突起,并且在其暴露的端面处延伸到熔炉外部超过混合物进料管的暴露端,突起是中空的,以允许含氧气体在 投影。