发明授权
- 专利标题: Method and device for producing granulated polycrystalline silicon in a fluidized bed reactor
- 专利标题(中): 在流化床反应器中生产粒状多晶硅的方法和装置
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申请号: US12065790申请日: 2006-09-04
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公开(公告)号: US07922990B2公开(公告)日: 2011-04-12
- 发明人: Harald Hertlein , Rainer Hauswirth
- 申请人: Harald Hertlein , Rainer Hauswirth
- 申请人地址: DE Munich
- 专利权人: Wacker Chemie AG
- 当前专利权人: Wacker Chemie AG
- 当前专利权人地址: DE Munich
- 代理机构: Brooks Kushman P.C.
- 优先权: DE102005042753 20050908
- 国际申请: PCT/EP2006/065943 WO 20060904
- 国际公布: WO2007/028776 WO 20070315
- 主分类号: C01B33/02
- IPC分类号: C01B33/02
摘要:
A fluidized bed process for the production of polycrystalline silicon granules supplies, in addition to reaction gas, a gas containing 99.5 to 95 mol. percent hydrogen and 0.5 to 5 mol. percent gaseous silicon compounds, and the reactor wall is maintained at the same or a higher temperature than the reaction zone, such that the deposition of silicon on reactor internals is minimized.
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