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    • 2. 发明授权
    • Fluidized bed calciner apparatus
    • 流化床煅烧设备
    • US4755138A
    • 1988-07-05
    • US47569
    • 1987-04-23
    • Thomas J. OwenMichael J. Klem, Jr.Robert J. Cash
    • Thomas J. OwenMichael J. Klem, Jr.Robert J. Cash
    • B01J8/18B01J8/24B01J8/44G21F9/14F27B15/20
    • B01J8/1836B01J8/1827B01J8/44G21F9/14B01J2208/00407B01J2208/00415
    • An apparatus for remotely calcining a slurry or solution feed stream of toxic or hazardous material, such as ammonium diurante slurry or uranyl nitrate solution, is disclosed. The calcining apparatus includes a vertical substantially cylindrical inner shell disposed in a vertical substantially cylindrical outer shell, in which inner shell is disposed a fluidized bed comprising the feed stream material to be calcined and spherical beads to aid in heat transfer. Extending through the outer and inner shells is a feed nozzle for delivering feed material or a cleaning chemical to the beads. Disposed in and extending across the lower portion of the inner shell and upstream of the fluidized bed is a support member for supporting the fluidized bed, the support member having uniform slots for directing uniform gas flow to the fluidized bed from a fluidizing gas orifice disposed upstream of the support member. Disposed in the lower portion of the inner shell are a plurality of internal electric resistance heaters for heating the fluidized bed. Disposed circumferentially about the outside length of the inner shell are a plurality of external heaters for heating the inner shell thereby heating the fluidized bed. Further, connected to the internal and external heaters is a means for maintaining the fluidized bed temperature to within plus or minus approximately 25.degree. C. of a predetermined bed temperature. Disposed about the external heaters is the outer shell for providing radiative heat reflection back to the inner shell.
    • 公开了一种用于远程煅烧有毒或有害物质的浆液或溶液进料流的设备,例如铵盐或硝酸铀酰溶液。 煅烧装置包括垂直的基本上圆柱形的内壳,其设置在垂直的基本上圆柱形的外壳中,其中内壳设置有流化床,流化床包括待煅烧的进料流材料和球形珠子以辅助热传递。 通过外壳和内壳延伸的是用于将进料或清洁化学品输送到珠的进料喷嘴。 设置在并延伸穿过内壳的下部并在流化床的上游延伸的是用于支撑流化床的支撑构件,支撑构件具有均匀的狭槽,​​用于将均匀的气体流从设置在上游的流化气体孔口引导到流化床 的支撑构件。 设置在内壳的下部的是用于加热流化床的多个内部电阻加热器。 围绕内壳的外部长度周向地设置有多个用于加热内壳的外部加热器,从而加热流化床。 此外,连接到内部和外部加热器是将流化床温度保持在预定床温度的±25℃以内的方法。 围绕外部加热器设置的是外壳,用于向内壳提供辐射热反射。