Is it true that for vacuum flash evaporation, the higher the temperature before vacuum application, the better?
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If there is no issue with solute precipitation, is it true that for vacuum flash distillation, the higher the temperature before vacuum application, the better? Is it true that the lower the pressure in the flash tank, the better?
It’s not certain; if it’s a substance with a low boiling point, it could lead to significant waste, so it’s necessary to control the temperature and pressure in this regard.
Whether it’s maintaining a high temperature or operating in a vacuum, there are always costs involved. As long as the separation efficiency meets the requirements, that’s fine~~ How was that phrase again? Ah, save where possible~~:lol
Every process has a purpose; if that purpose can be achieved with the appropriate temperature and pressure, then that’s sufficient. Of course, if a higher temperature does not result in energy waste and can lead to better outcomes, then the temperature can be increased appropriately.
Not necessarily; low-boiling-point substances can lead to waste, so certain temperatures and pressures need to be controlled.
It mainly depends on what medium it is. . . This depends on the medium
Not necessarily; it depends mainly on what your goal is. Depending on the requirements of the process, flashing might be used for secondary utilization. There’s no need to deliberately control the temperature in that case – it can be whatever it is. The vacuum level can be adjusted according to your process requirements.
If you aim to obtain low-boiling-point substances from a liquid through pressure-induced flashing, the temperature before flashing must be determined based on the temperature after flashing. The temperature after flashing has to be lower than the boiling point of the solvent at that pressure; otherwise, the flashing process will result in both the solvent and the solute vaporizing together.
What was said on the 9th floor makes sense – it mainly depends on what you want to do; it’s not true that the higher the temperature, the better