System and method to vaporize a process stream by mixing the stream with a heating medium

A system, comprising:

• a vessel arranged to receive a process stream into a liquid zone of the vessel, the liquid zone to include a heating medium less volatile than the process stream and maintained at a vaporization operating temperature;
• a mixer fluidly coupled to the liquid zone of the vessel and arranged to mix the process stream and a portion of the heating medium;
• and
• a pump-around loop arranged to remove a portion of the heating medium from the liquid zone at a first location and return the portion back to the liquid zone at a second location above the first location;
• wherein the pump-around loop includes a separation device;
• and
• wherein volatile components of the process stream vaporize by thermal exchange with the heating medium and migrate to a vapor zone of the vessel for removal, and solids collect in the liquid zone of the vessel for removal.