What is the self-evaporator?
The reason is called self-evaporation, because the vacuum container, and no solution to the solution, the solution is only using their own entrained heat to complete the evaporation process, so called from evaporation.
The solution has a low boiling point (eg, 80 degrees) and the solution is boiled in this vessel for the evaporation process.
The so-called self-evaporation is also called flash, that is, the need to evaporate the solution before heating to near atmospheric pressure boiling point (such as 105 degrees), then the solution into a negative pressure (vacuum) container, in negative pressure environment,
