How does the concentration of the finished alcohol change when the pressure in the alcohol distillation tower increases?
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An increase in column pressure leads to a decrease in the concentration of the distillate. At the same time, as column pressure rises, the reflux ratio increases, which results in an increase in the alcohol concentration. So, does the alcohol concentration increase or decrease?
Personally, I think it has increased, because during normal operation, when the alcohol concentration is not at the required level, the tower pressure is appropriately increased and the temperature is raised, which in turn raises the alcohol concentration.
Well, other people say the same thing. Thank you!
As pressure increases, the difference in boiling points between water and ethanol grows, so the distillation effect should be better.