WIRBELSCHICHTREAKTOR UND VERFAHREN ZUR HERSTELLUNG VON POLYKRISTALLINEM SILICIUMGRANULAT
    7.
    发明公开
    WIRBELSCHICHTREAKTOR UND VERFAHREN ZUR HERSTELLUNG VON POLYKRISTALLINEM SILICIUMGRANULAT 有权
    开关层反应器和生产多晶硅颗粒的方法

    公开(公告)号:EP3288894A1

    公开(公告)日:2018-03-07

    申请号:EP16794302.6

    申请日:2016-11-09

    申请人: Wacker Chemie AG

    IPC分类号: C01B33/027 B01J8/18

    摘要: The invention relates to a fluidized bed reactor for producing polycrystalline silicon granulate, comprising a reactor container (1), a reactor pipe (2), and a reactor base (15) within the reactor container (1). The reactor pipe (2) consists of a main part and a surface coating, and an intermediate casing (3) is located between the outer wall of the reactor pipe (2) and the inner wall of the reactor container (1). The fluidized bed reactor further comprises a heating device (5), at least one base gas nozzle (9) for supplying fluidizing gas, at least one secondary gas nozzle (10) for supplying reaction gas, a supply device (11) for supplying silicon seed particles, a removal line (14) for polycrystalline silicon granulate, and a device for discharging reactor exhaust gas (16). The invention is characterized in that the main part of the reactor pipe consists of a base material with an ash content of