Patent ID: 11958022
Assignee: HIGH-PURITY SILICON CORPORATION
Field: Materials, metallurgy (Chemistry)
Classification: CPC B  C  F | IPC B  C  F

Claim 9:
10. A polymer handling method for a polycrystalline silicon manufacturing device, comprising:
providing the polycrystalline silicon manufacturing device containing silicon polymers which are a byproduct of a production of polycrystalline silicon in a Siemens process or a byproduct from a silicon epitaxy reactor;
sealing the polycrystalline silicon manufacturing device to close the polycrystalline silicon manufacturing device to prevent gas or fluid leaking from the polycrystalline silicon manufacturing device;
filling the polycrystalline silicon manufacturing device with an atmosphere having an oxygen concentration less than 3 volume %;
filling the polycrystalline silicon manufacturing device with a hydrolyzing gas having a range of about 90 to 120 grains of moisture over a temperature range of about 50 to 70° C.;
whereby the silicon polymers are, in whole or in part, humidified;
opening the polycrystalline silicon manufacturing device and treating the polycrystalline silicon manufacturing device with pressurized water;
collecting the water containing diluted polymer;
waste treating the water containing diluted polymer to remove wastes from the water;
covering exhaust port openings of an exhaust system of the polycrystalline silicon manufacturing device with threaded polytetrafluoroethylene (PTFE) caps to allow for nitrogen to flow out of the caps; and
placing a nitrogen purge on the exhaust system of the polycrystalline silicon manufacturing device.