Patent ID: 6609870
Filing Date: 2003-08-26
Classification: B65G

Abstract:
A granular semiconductor material transport system for transporting granular polysilicon comprising:a feed tube having one end in fluid communication with a granular polysilicon supply, said feed tube directing a transfer fluid to the supply and receiving granular material entrained in the transfer fluid from the supply, said one end of the feed tube further comprising an outer tube and an inner tube, said outer and inner tubes being arranged to form an annular cavity between the inner and outer tubes, said annular cavity defining a passage for directing the transfer fluid from a fluid supply to the granular polysilicon supply, while the interior of the inner tube receives the transfer fluid entrained with granular material from the granular polysilicon supply; a process vessel sealably receiving an opposite end of the inner tube for receiving transfer fluid entrained with granular material into the process vessel; and a vacuum source sealably connected to the process vessel to said vacuum source drawing dust-entrained transfer fluid from the process vessel.