Effect of salt on the bottom temperature of a distillation column.
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Does salt have a significant impact on the temperature at the bottom of the tower? The feed consists of water, NaCl, and NMP, with the salt content being around 1%. Water is present at the top of the tower, while NMP and salt are present at the bottom; the salt is insoluble in NMP, so it precipitates. I would like to know whether the presence of NaCl has an impact on the temperature at the bottom of the tower, and if so, to what extent? When I conducted the simulation without adding NaCl, the temperature at the bottom of the tower was slightly lower than the actual temperature. I would like to know whether NaCl has a significant impact on the temperature at the bottom of the tower. Additionally, if NaCl is added, what thermodynamic model should be used for simulation and how should the calculations be carried out?
Adding salt can change the relative volatility between the components, making distillation relatively easier. The boiling point definitely changes when salt is added; just think about the boiling points of seawater and fresh water. If NaCl is added, consider the electrolyte equation.
A salt concentration of 1% is estimated to have little impact on the reactor temperature; of course, an electrolyte model is used when electrolytes are present