System and method to reboil a process stream in a distillation system by mixing the stream with a heating medium

A system to reboil a process stream in a distillation system, the system comprising:

• a vessel arranged to receive a process stream being removed from a distillation column and route the process stream into a liquid pool zone of the vessel, the liquid pool zone including a heating medium less volatile than the process stream, immiscible with the process stream, and maintained at an operating temperature determined by vaporization requirements;
• and
• a pump-around loop arranged to receive a portion of the heating medium residing in the liquid pool zone and return the portion back to the liquid pool zone;
• wherein when the process stream is contacted by the heating medium in the liquid pool zone volatile components of the process stream partially vaporize and migrate to a vapor separation zone of the vessel for removal and solids form in the liquid pool zone of the vessel for removal;
• and
• a mixer located outside of the liquid pool zone of the vessel and arranged to mix the process stream and the portion of the heating medium being returned to the vessel.