发明公开
EP1653152A2 After-air nozzle for two-stage combustion boiler, two-stage combustion boiler and combustion method using the same
审中-公开
二次空气喷嘴，用于锅炉用两阶段燃烧锅炉具有两级燃烧和两阶段燃烧过程
- 专利标题： After-air nozzle for two-stage combustion boiler, two-stage combustion boiler and combustion method using the same
- 专利标题（中）： 二次空气喷嘴，用于锅炉用两阶段燃烧锅炉具有两级燃烧和两阶段燃烧过程
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申请号： EP05023888.0申请日： 2005-11-02
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公开(公告)号： EP1653152A2公开(公告)日： 2006-05-03
- 发明人: Taniguchi, Masayuki , Yamamoto, Kenji , Okazaki, Hirofumi , Yasuda, Kazumi , Kiyama, Kenji , Yano, Takanori , Baba, Akira
- 申请人： BABCOCK-HITACHI KABUSHIKI KAISHA
- 申请人地址： World Trade Center Bldg., 4-1, Hamamatsucho 2-chome Minato-ku, Tokyo 105-6107 JP
- 专利权人： BABCOCK-HITACHI KABUSHIKI KAISHA
- 当前专利权人： BABCOCK-HITACHI KABUSHIKI KAISHA
- 当前专利权人地址： World Trade Center Bldg., 4-1, Hamamatsucho 2-chome Minato-ku, Tokyo 105-6107 JP
- 代理机构： Beetz & Partner
- 优先权： JP2004318996 20041102; JP2004356394 20041209
- 主分类号： F23C7/02
- IPC分类号： F23C7/02 ; F23L9/00 ; F23C6/04
摘要：
This invention provides an after-air nozzle and a boiler having thereof capable of reducing NOx and CO at the same time.
This invention is characterized in that it has a vena contracta (24) such that an outside diameter of a flow passage diminishes towards the air-jetting port (16) which supplies air to a boiler (18), and a changing apparatus (26-32) of a flow passage cross-sectional area to change a flow passage cross-sectional area of the vena contracta (24).
Using the after-air nozzle of this invention makes it possible to reduce NOx and CO concentrations at the same time.
This invention is characterized in that it has a vena contracta (24) such that an outside diameter of a flow passage diminishes towards the air-jetting port (16) which supplies air to a boiler (18), and a changing apparatus (26-32) of a flow passage cross-sectional area to change a flow passage cross-sectional area of the vena contracta (24).
Using the after-air nozzle of this invention makes it possible to reduce NOx and CO concentrations at the same time.
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