The liquid outlet from bottom of a distillation column is close to its initial boiling point, due to near equilibrium conditions on each of the distillation column trays. This liquid is mostly made of the heavy component from the mixture at the distillation column inlet. But some amount of the light component also remains dissolved in this liquid. To recover this light component in its vapor form and thus also to improve purity of the heavy component in bottoms outlet, this liquid stream is sent to a reboiler.
STI product range include different types of reboilers like kettle type, fired, thermosiphon reboilers etc.