Patent ID: 8287645

Claim:
A production apparatus for high purity polycrystal silicon equipped with: a vertical reactor provided with a heating means on an outer circumferential surface, a silicon chloride gas-feeding nozzle inserted into the vertical reactor from an upper part to a lower part thereof, a reducing agent gas-feeding nozzle inserted into the vertical reactor only from an upper part to a lower part thereof and a waste gas discharge pipe connected with the reactor, wherein polycrystal silicon is allowed to grow in order at a tip part of the silicon chloride gas-feeding nozzle by the gas phase reaction of a silicon chloride gas introduced from the silicon chloride gas-feeding nozzle with a reducing agent gas introduced from the reducing agent gas-feeding nozzle, and a plurality of the silicon chloride gas-feeding nozzles is installed apart by a prescribed distance from an inner wall of the reactor so as to surround the reducing agent gas-feeding nozzle, whereby silicon crystal formed in the reactor is adhered to the tip part of the silicon chloride gas-feeding nozzle, and then it is coagulated and allowed to grow in a tubular form toward a lower part.