-
公开(公告)号：US06367394B1
公开(公告)日：2002-04-09
申请号：US09665072
申请日：2000-09-19
IPC分类号： F23L110
CPC分类号： F23C5/06 , F23D1/02 , F23D2201/101 , F23D2201/20
摘要： A pulverized fuel combustion burner and furnace arrangement has a plurality of air nozzles arranged on a side wall of the furnace for injecting a mixed flow of pulverized fuel and carrier air to establish a flame into the furnace. The plurality of nozzles includes a primary nozzle for injecting the mixed flow into the furnace and a secondary nozzle positioned around the primary nozzle for feeding combustion auxiliary air around the primary nozzle. A pulverized fuel supply pipe feeds the mixed flow to the primary nozzle. The primary nozzle and the pulverized fuel supply pipe are joined at a jointed portion at which the primary nozzle can be pivoted to change a direction for injecting the mixed flow into the furnace. The pulverized fuel supply pipe extends through a windbox, the windbox forming a combustion auxiliary air supply passage around the pulverized fuel supply pipe. A rich/lean flow separator is disposed in a middle portion of the pulverized fuel supply pipe spaced from opposite inner walls of the pulverized fuel supply pipe such that when the mixed flow flows around the rich/lean flow separator, a rich/lean flow concentration distribution is established in which a fuel-rich flow is created at an outer part inside of the pulverized fuel supply pipe and adjacent to the opposite inner walls and a fuel-lean flow is created at an inner part inside of the rich flow and along a center line of the pulverized fuel supply pipe. Flow straightening plates are disposed and positioned in the primary nozzle and the pulverized fuel supply pipe downstream of the rich/lean flow separator so as to maintain the rich/lean flow concentration distribution established by the rich/lean flow separator to the exit of the primary nozzle.
摘要翻译： 粉煤燃烧器和炉装置具有布置在炉的侧壁上的多个空气喷嘴，用于喷射粉煤燃料和载气的混合流以在炉中建立火焰。 多个喷嘴包括用于将混合流注入炉中的主喷嘴和位于主喷嘴周围的辅助喷嘴，用于在主喷嘴周围供给燃烧辅助空气。 粉碎的燃料供给管将混合流供给到主喷嘴。 主喷嘴和粉碎燃料供给管在主喷嘴可枢转的接合部分处连接，以改变将混合流注入炉中的方向。 粉碎的燃料供应管延伸穿过风箱，风箱在粉煤燃料供应管周围形成燃烧辅助空气供应通道。 富煤/贫流分离器设置在粉碎燃料供应管的与粉煤燃料供应管的相对内壁间隔开的中间部分，使得当混合流在富/稀流分离器周围流动时，富/贫流量浓度 建立了在粉煤燃料供给管的内部的外部与相对的内壁相邻地产生富燃料流的分布，并且在富流的内部的内部产生贫燃料流，并且沿着 粉煤燃料供应管的中心线。 流量矫直板被设置并定位在富/贫流分离器下游的主喷嘴和粉碎燃料供应管中，以便将富/稀流分离器确定的浓/稀流浓度分布保持到主/ 喷嘴。
-
公开(公告)号：US6145449A
公开(公告)日：2000-11-14
申请号：US052025
申请日：1998-03-31
CPC分类号： F23C5/06 , F23D1/02 , F23D2201/101 , F23D2201/20
摘要： A pulverized fuel combustion burner and furnace arrangement has a plurality of air nozzles arranged on a side wall of the furnace for injecting a mixed flow of pulverized fuel and carrier air to establish a flame into the furnace. The plurality of nozzles includes a primary nozzle for injecting the mixed flow into the furnace and a secondary nozzle positioned around the primary nozzle for feeding combustion auxiliary air around the primary nozzle. A pulverized fuel supply pipe feeds the mixed flow to the primary nozzle. The primary nozzle and the pulverized fuel supply pipe are joined at a jointed portion at which the primary nozzle can be pivoted to change a direction for injecting the mixed flow into the furnace. The pulverized fuel supply pipe extends through a windbox, the windbox forming a combustion auxiliary air supply passage around the pulverized fuel supply pipe. A rich/lean flow separator is disposed in a middle portion of the pulverized fuel supply pipe spaced from opposite inner walls of the pulverized fuel supply pipe such that when the mixed flow flows around the rich/lean flow separator, a rich/lean flow concentration distribution is established in which a fuel-rich flow is created at an outer part inside of the pulverized fuel supply pipe and adjacent to the opposite inner walls and a fuel-lean flow is created at an inner part inside of the rich flow and along a center line of the pulverized fuel supply pipe. Flow straightening plates are disposed and positioned in the primary nozzle and the pulverized fuel supply pipe downstream of the rich/lean flow separator so as to maintain the rich/lean flow concentration distribution established by the rich/lean flow separator to the exit of the primary nozzle.
-
搜索结果
2 条记录 (耗时 0.017 秒)
