Patent ID: 8231724
Filing Date: 2012-07-31
Classification: B01J,C01B,Y10T

Abstract:
1. A reactor for polycrystalline silicon in which a silicon seed rod installed inside the reactor is heated by supplying electricity, a raw material gas supplied inside the reactor is allowed to react, thereby producing polycrystalline silicon on the surface of the silicon seed rod, the reactor for polycrystalline silicon, comprising: a raw material gas supply port installed on the bottom of the reactor; and a raw material gas supply nozzle which extends upward and which is attached to the raw material gas supply port so as to be communicatively connected, wherein the upper end of the raw material gas supply nozzle is set to a height in a range from −10 cm to +5 cm on the basis of the upper end of the electrode which retains the silicon seed rod; the raw material gas supply nozzle is formed in a tapered cylindrical shape and further comprises: the major diameter portion is free of direct contact with a top surface of the bottom of the reactor; and the raw material gas supply nozzle comprises a nozzle main body and a nozzle head which is installed at a tip of the nozzle main body in a removable manner, wherein the nozzle head is formed to have a step between a major diameter portion and a minor diameter portion.