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    Fuel spud for high temperature burners
    52.
    发明授权
    Fuel spud for high temperature burners 有权
    高温燃烧器的燃料喷嘴

    公开(公告)号：US06893252B2

    公开(公告)日：2005-05-17

    申请号：US10389328

    申请日：2003-03-14

    申请人： George Stephens ,  David B. Spicer

    发明人： George Stephens ,  David B. Spicer

    IPC分类号： F23C6/04 ,  F23C7/00 ,  F23C9/00 ,  F23D14/04 ,  F23D14/08 ,  F23D14/66 ,  F23L7/00 ,  F23M5/02 ,  F23M11/04 ,  F23M3/00

    CPC分类号： F23D14/08 ,  F23C6/045 ,  F23C7/008 ,  F23C9/00 ,  F23C2202/10 ,  F23C2900/06041 ,  F23D14/04 ,  F23D14/66 ,  F23D2207/00 ,  F23D2900/00011 ,  F23L7/005 ,  F23M5/025 ,  F23M11/042 ,  Y02E20/348

    摘要： An improved burner and a method for combusting fuel in a burner used in furnaces such as those found in steam cracking. The burner includes a burner tube having a downstream end and an upstream end, the burner tube having a venturi therein; a fuel spud located adjacent the upstream end of the burner tube, for introducing fuel gas into the burner tube; a burner tip mounted on the downstream end of the burner tube adjacent a first opening in the furnace; at least one passageway having a first end and a second end adjacent the upstream end of the burner tube; means for drawing flue gas from the furnace, through the passageway, in response to an inspirating effect of uncombusted fuel gas exiting the fuel spud, the uncombusted fuel gas flowing through the burner tube from its upstream end towards its downstream end; and means for increasing the inspirating effect of uncombusted fuel gas exiting the fuel spud. The means for increasing the inspirating effect of uncombusted fuel gas exiting the fuel spud is effective to increase the amount of flue gas drawn from the furnace.

    摘要翻译： 一种改进的燃烧器和用于在诸如蒸汽裂解中发现的炉中的燃烧器中燃烧燃料的方法。 燃烧器包括具有下游端和上游端的燃烧器管，燃烧管在其中具有文丘里管; 位于燃烧器管的上游端附近的燃料喷嘴，用于将燃料气体引入燃烧器管中; 燃烧器尖端安装在燃烧器管的下游端，与炉中的第一开口相邻; 至少一个通道，其具有与燃烧器管的上游端相邻的第一端和第二端; 响应于离开燃料喷口的未燃燃料气体的吸气作用，来自炉的烟气通过通道从未燃烧的燃料气体从其上游端向下游端流过燃烧器管的装置; 以及用于增加离开燃料喷口的未燃燃料气体的鼓励效果的装置。 用于增加离开燃料喷口的未燃燃料气体的启发效果的手段有效地增加从炉中抽出的烟气量。

    Burner design for achieving higher rates of flue gas recirculation
    53.
    发明授权
    Burner design for achieving higher rates of flue gas recirculation 有权
    燃烧器设计可实现更高的烟道气再循环率

    公开(公告)号：US06884062B2

    公开(公告)日：2005-04-26

    申请号：US10389153

    申请日：2003-03-14

    申请人： George Stephens ,  David B. Spicer

    发明人： George Stephens ,  David B. Spicer

    IPC分类号： F23C6/04 ,  F23C7/00 ,  F23C9/00 ,  F23D14/04 ,  F23D14/08 ,  F23L7/00 ,  F23M5/02 ,  F23M11/04 ,  F23D14/00

    CPC分类号： F23D14/04 ,  F23C6/045 ,  F23C7/008 ,  F23C9/00 ,  F23C2202/10 ,  F23C2900/06041 ,  F23D14/08 ,  F23D2207/00 ,  F23D2900/00011 ,  F23L7/005 ,  F23M5/025 ,  F23M11/042

    摘要： A burner for use in furnaces such as in steam cracking. The burner includes a primary air chamber; a burner tube including (i) a downstream end, (ii) an upstream end in fluid communication with the primary air chamber, and (iii) a burner tip mounted on the downstream end of the burner tube and directed to a first opening in the furnace, so that combustion of fuel takes place downstream of the burner tip; at least one flue gas recirculation duct having a first end at a second opening in the furnace and a second end opening into the primary air chamber, the first end being spaced an effective distance from the first opening for minimizing entrainment of a burner flame into the second opening.

    摘要翻译： 用于炉中的燃烧器，例如蒸汽裂化。 燃烧器包括一个主气室; 燃烧器管，其包括（i）下游端，（ii）与所述主气室流体连通的上游端，以及（iii）安装在所述燃烧器管的下游端并且被引导到所述燃烧器管的第一开口的燃烧器尖端 从而燃烧燃烧发生在燃烧器尖端的下游; 至少一个烟道气再循环管道，其具有在所述炉中的第二开口处的第一端和通向所述一次空气室的第二端开口，所述第一端与所述第一开口间隔开有效距离，以使燃烧器火焰的夹带最小化 第二次开幕