Vent Gas Recovery System

The centrotherm vent gas recovery system (VGR) is used for the treatment of both reactor and converter vent gas streams. The VGR consists of a main process area with distillation columns and condensation units, supplied by a compressor unit and a refrigeration unit. The basic design already includes enhanced condensation capacity and separate condensate tank for converter quench gas stream.

  • Designed for 2500 t/a polysilicon production
  • Distillation column for TCS/STC separation can be integrated into the VGR unit without additional interfaces
  • Ultra-low temperature processes are applied to achieve highest recovery rates for all compounds of the vent gas stream
  • HCl buffer tank can be included to adjust HCl supply pressure and flow to actual needs of associated units.



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