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1. 发明公开

KR1020080084976A 반응제 사용 효율이 개선된 순환 유동층 보일러 无效
标题翻译：具有改进的反应物利用的循环流化床锅炉
公开(公告)号：KR1020080084976A
公开(公告)日：2008-09-22
申请号：KR1020087014689
申请日：2006-11-09
申请人： 모보텍 유에스에이 인코퍼레이티드
发明人： 히긴스,브라이언,에스.
IPC分类号： F23C10/00
CPC分类号： F23C10/10 , F23C2206/103 , F23J7/00
摘要： A circulating fluidized bed boiler having improved reactant utilization. The circulating fluidized bed boiler includes a circulating fluidized bed having a dense bed portion; a lower furnace portion adjacent to the dense bed portion; and an upper furnace portion, wherein the dense bed portion of the circulating fluidized bed boiler is maintained below the stoichiometric ratio (fuel rich stage) and the lower furnace portion is maintained above the stoichiometric ratio (fuel lean stage), thereby reducing the formation of NOx.; a reactant to reduce the emission of at least one combustion product in the flue gas; and a plurality of secondary air injection ports downstream of the circulating fluidized bed for providing mixing of the reactant and the flue gas in the furnace above the dense bed, wherein the amount of reactant required for the reduction of the emission of the combustion product is reduced. In a preferred embodiment, the circulating fluidized bed boiler may further include a return system for returning carry over particles from the flue gas to the circulating fluidized bed.
摘要翻译：循环流化床锅炉具有改善的反应物利用率。循环流化床锅炉包括具有致密床部分的循环流化床; 邻近致密床部分的下炉部分; 和上炉部分，其中循环流化床锅炉的致密床部分保持低于化学计量比（富燃料阶段），并且下炉部分保持在化学计量比（燃料贫乏阶段）以上，从而减少氮氧化物; 用于减少烟道气中至少一种燃烧产物的排放的反应物; 以及在循环流化床下游的多个二次空气注入口，用于提供在致密床上方的炉中的反应物和烟道气的混合，其中减少燃烧产物的排放所需的反应物的量减少。在一个优选实施例中，循环流化床锅炉还可以包括用于将废气中的颗粒从废气返回到循环流化床的返回系统。

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