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    • 24. 发明专利
    • Burner
    • 刻录机
    • JP2014009922A
    • 2014-01-20
    • JP2012148471
    • 2012-07-02
    • Ihi Corp株式会社Ihi
    • TAMURA MASAHITOITOKAZU RYUNOSUKE
    • F23L7/00F23C7/02F23D14/22F23D14/24F23K3/02F23L9/00
    • F23D1/02F23C7/02F23D2201/20F23K3/02F23L7/007F23L9/00Y02E20/344
    • PROBLEM TO BE SOLVED: To provide a burner capable of improving ignition stability of pulverized coal while holding a transfer medium at a low oxygen state.SOLUTION: A burner includes: a nozzle body 7 having an inner cylindrical nozzle 11 arranged on a center axis of a throat 4 attached to a furnace wall 3 and allowing auxiliary combustion air 24 to flow, and an outer cylindrical nozzle 9 concentrically arranged on outside of the inner cylindrical nozzle and allowing a pulverized coal mixed flow 18 obtained by mixing the transfer medium and the pulverized coal to flow; a wind box 5 for storing the nozzle body; a secondary air adjusting device 8 stored in the wind box and attached to a tip part of the nozzle body; an auxiliary combustion air introduction pipe 23 for introducing combustion air 22 from the wind box into the inner cylindrical nozzle as auxiliary combustion air; a pulverized coal flow supply pipe 16 for introducing the pulverized coal mixed flow into the outer cylindrical nozzle; and an oxygen containing gas supply pipe 17 for supplying oxygen containing gas 19 into the outer cylindrical nozzle and increasing an oxygen concentration in the pulverized coal mixed flow.
    • 要解决的问题:提供一种能够在保持低氧状态下的转印介质的同时保持粉煤的点火稳定性的燃烧器。解决方案:燃烧器包括:喷嘴体7,其具有布置在中心轴线上的内圆柱形喷嘴11 连接到炉壁3并允许辅助燃烧空气24流动的喉部4和同心地布置在内圆筒形喷嘴外侧的外圆柱形喷嘴9,并且允许通过将转印介质和粉碎的混合物获得的粉煤混合流18 煤流; 用于存储喷嘴体的风箱5; 存储在风箱中并连接到喷嘴主体的末端部分的二次空气调节装置8; 用于将来自风箱的燃烧空气22作为辅助燃烧空气引入内圆筒形喷嘴的辅助燃烧空气引入管23; 用于将粉煤混合流引入外圆筒形喷嘴的粉煤流供给管16; 以及用于将含氧气体19供给到外圆筒形喷嘴中并增加粉煤混合流中的氧浓度的含氧气体供给管17。