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    • 53. 发明申请
    • MULTICOMPONENT FEED APPARATUS WITH PREHEATER AND MIXER FOR A HIGH TEMPERATURE CHEMICAL REACTOR
    • 用于高温化学反应器的预热器和混合器的多功能进料装置
    • WO98030500A1
    • 1998-07-16
    • PCT/US1998/000727
    • 1998-01-14
    • B01J8/24B01J12/02B01J19/26C01G43/01C01G43/025
    • B01J12/02B01J8/1827B01J19/26B01J2219/00099B01J2219/00119B01J2219/00135B01J2219/00159C01G43/01C01G43/025
    • A multicomponent fluid feed apparatus is disclosed that independently preheats and then mixes two or more fluid streams being introduced into a high temperature chemical reactor to promote more rigorous and complete reactions using assemblies of inert tubular elements and an integral mixing orifice plate. The design allows use of ceramic and speciality alloy materials for high temperature service with particularly corrosive halide feeds such as UF6 and HF. Radiant heat transfer to the tubular elements from external means gives the necessary system high temperatures without excessive temperatures to cause material failure. Preheating of the gaseous reactants in a separate step prior to mixing and injecting the gaseous reactants into a high temperature chemical reactor was found to provide an improved thermal conversion of UF6 to uranium oxides.
    • 公开了一种多组分流体输送装置,其独立地预热然后将引入到高温化学反应器中的两种或更多种流体流混合,以使用惰性管状元件和整体混合孔板的组件来促进更严格和完整的反应。 该设计允许使用陶瓷和特种合金材料进行高温维护,特别是腐蚀性卤化物进料如UF6和HF。 从外部装置向管状元件的辐射热传递给出必要的系统高温,而没有过多的温度导致材料失效。 发现在气态反应物混合并将气态反应物注入高温化学反应器之前,在单独的步骤中预热气态反应物以提供UF 6对氧化铀的改进的热转化。
    • 58. 发明专利
    • Two step dry-type uo2 production process
    • 两步干式UO2生产工艺
    • JP2008273828A
    • 2008-11-13
    • JP2008113387
    • 2008-04-24
    • Westinghouse Electric Co Llcウエスチングハウス・エレクトリック・カンパニー・エルエルシー
    • LAHODA EDWARD J
    • C01G43/025
    • C01G43/025C01G43/00C01G43/01
    • PROBLEM TO BE SOLVED: To provide a two-step process for producing nuclear grade, active uranium dioxide (UO
      2 ) powder.
      SOLUTION: The two-step process comprises a first step of reacting uranium hexafluoride (UF
      6 ) with steam in, for example, an integrated dry route (IDR)-type kiln or a flame reactor to yield uranyl fluoride (UO
      2 F
      2 ) and uranium trioxide/uranium octoxide (UO
      3 /UO
      8 ), and a second step of removing fluoride and reducing UO
      3 /UO
      8 and/or UO
      2 F
      2 to obtain uranium dioxide (UO
      2 ) in a second kiln under a steam/hydrogen atmosphere. The two-step process accurately controls the exothermicity of the reaction, which allows for a very accurate temperature control which controls the growth of the particles and results in obtaining UO
      2 powder that is active.
      COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供生产核级二氧化铀(UO 2 )粉末的两步法。 解决方案:两步法包括将六氟化铀(UF 6 )与蒸汽在例如一体式干法(IDR)型窑或火焰反应器中反应的第一步骤 得到铀酰氟化物(UO 2 F 2 )和三氧化铀/ / oxide oxide oxide(((>>>>>>>>>>>>> ),以及除去氟化物并还原UO 3的第二步骤和/或SBO 2 / SB SB 2 / SB SB 在蒸汽/氢气氛下,在第二窑中得到二氧化铀(UO 2 )。 两步法精确地控制反应的放热,这允许控制颗粒生长的非常精确的温度控制,并且导致获得活性的UO 2 粉末。 版权所有(C)2009,JPO&INPIT