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    • 1. 发明授权
    • Thermal ash agglomeration process
    • 热灰附聚过程
    • US5158449A
    • 1992-10-27
    • US763903
    • 1991-09-23
    • Bruce G. BryanMark J. KhinkisAmirali G. Rehmat
    • Bruce G. BryanMark J. KhinkisAmirali G. Rehmat
    • F23C10/00F23C10/24F27B15/00
    • F27B15/00F23C10/002F23C10/24
    • A process and apparatus for thermal agglomeration of high melting temperature ashes in fluidized bed processes is disclosed. Carbonaceous material to be combusted, incinerated or gasified is introduced into a fluidized bed supported on a perforated sloping supported grid through which a fluidizing gas is injected. An upflowing discharge control gas is injected through a density/size solids withdrawal conduit in communication with the base of the perforated sloping support grid. Positioned within the solids withdrawal conduit is a central jet pipe through which fuel and oxidant are injected into the base of the fluidized bed forming a hot temperature zone in which ash melts and agglomerates. Positioned above the perforated sloping support grid and peripherally mounted through the reactor wall are one or more burners through which fuel and oxidant are injected into the fluidized bed forming supplemental hot temperature zones in which ash melts and agglomerates. The temperature of the supplemental hot zones is controlled independent of the bulk-bed temperature of the fluidized bed by the amount of fuel injected through the burners and can be maintained substantially higher than the bulk-bed temperature, thereby enabling the agglomeration of higher melting temperature ashes.
    • 公开了一种用于流化床工艺中高熔点灰分热凝聚的方法和装置。 要燃烧,焚化或气化的碳质材料被引入支撑在穿过倾斜的支撑格栅上的流化床中,流化床通过其注入流化气体。 向上流动的排放控制气体通过与多孔倾斜支撑网格的底部连通的密度/尺寸的固体排出管道注入。 位于固体排出管道内的是中心喷射管,燃料和氧化剂通过该中心喷射管注入流化床的底部,形成灰分熔化和附聚的热温区。 位于穿孔倾斜支撑格栅上方并通过反应器壁外围安装的是一个或多个燃烧器,通过该燃烧器将燃料和氧化剂注入到流化床中,形成灰分熔化和附聚的补充热温区。 补充热区的温度与流化床的体床温度无关,通过燃烧器喷射的燃料量被控制,并且可以保持基本上高于本体床温度,从而能够使较高熔融温度 灰烬