Fluidized bed reactor for preparing metal nitride
    1.
    发明授权
    Fluidized bed reactor for preparing metal nitride 失效
    用于制备金属氮化物的流化床反应器

    公开(公告)号:US5573689A

    公开(公告)日:1996-11-12

    申请号:US594156

    申请日:1996-01-31

    摘要: In a fluidized bed reactor for preparing a metal nitride by feeding metal powder and a non-oxidizing gas containing N.sub.2 or NH.sub.3 into a reaction tube (1) to form a fluidized bed (2) therein and heating the fluidized bed for nitriding the metal powder, an envelope (11) encloses the reaction tube (1) for preventing the surrounding air from entering the reaction tube. A heater (9) is disposed outside the envelope (11) for heating the fluidized bed (2) to 1,200.degree. C. or higher. The envelope prevents penetration of the surrounding air into the reaction tube and also prevents deterioration of the heater and surrounding components by scattering of metal fines. The reactor ensures safe operation to prepare metal nitride powder of high purity on an industrial scale.

    摘要翻译: 在用于通过将金属粉末和含有N 2或NH 3的非氧化气体进料到反应管(1)中以在其中形成流化床(2)而制备金属氮化物的流化床反应器中,并加热流化床以使金属粉末渗氮 ,封套(11)包围用于防止周围空气进入反应管的反应管(1)。 将加热器(9)设置在用于将流化床(2)加热到1200℃以上的外壳(11)的外侧。 外壳防止周围空气渗透到反应管中,并且还防止加热器和周围部件由于金属细粉的散射而变质。 反应器确保安全操作,以工业规模制备高纯度的金属氮化物粉末。