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Completed projects >  Polycrystalline silicon production

Polycrystalline silicon production

LLC Usolye-Sibirsky Silikon

Customer: LLC Usolye-Sibirsky Silikon
Work description: Unit of chlorsilane condensation and separation of vapour-gas mixture components of pilot polycrystalline silicon production plant. Creation of pilot polycrystalline silicon production facility with capacity up to 3000 tons at the industrial area of LLC Usolye-Sibirsky Silikon. Industrial production facilities of polycrystalline silicon with the capacity of 3000 tons a year at the industrial area of LLC Usolye-Sibirsky Silikon
Types of works performed: development of design and detail documentation, receipt of approval issued by Glavgosexpertiza of Russia, packaged equipment and materials supply, designer’s supervision over construction, installation and commissioning works;
Capacity: 3000 t/year
Year: 2008-2009

The latest projects on silicon implemented by LENNIIHIMMASH Group have been carried out in accordance with the contract with LLC Usolye-Sibirsky Silikon of Nitol company; pilot polycrystalline silicon production plant of 300 t/year and industrial production of polycrystalline silicon of 3000 t/year.
The scope of works included such complicated process facilities as unit of chlorsilane condensation and separation, vertical and horizontal chlorsilane warehouses, rectification and other auxiliary facilities.
Chlorsilane warehouse is complex of products storage vessels and pumping station. Vessels area is open and section-type one. 14 vertical vessels for 100 m3 each and 3 horizontal vessels for 100 m3 each are located at the area.
During designing of intermediate storage of polycrystalline silicon chlorsilane 3000, vertical vessels widely applied by global practices were used; this enabled to decrease construction area.

The following has been supplied:

  • Heat exchanging equipment – 11 pcs.
  • Columns – 4 pcs.
  • Vessel equipment – 15 pcs.
  • Air coolers – 5 pcs.
  • Mass transfer trays
  • Internals
  • Frequency converters
  • Pumping equipment – 22 pcs
  • Industrial control, shutoff and safety valves – 634 pcs.


Photos are provided by the press service of LLC Usolye-Sibirsky Silikon