How to separate water from formic acid
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During the production process, the water contains a large amount of formic acid – approximately 30% of its content. I would like to increase the formic acid concentration to 60%. I seek advice from those who are experts in this field.
Increasing the concentration from 30% to 60% may encounter an atmospheric boiling point; distillation can be used, as well as pressure-driven or vacuum distillation.
The traditional method mentioned above relies on distillation, which is energy-intensive and requires high-quality materials for the equipment. Vacuum distillation, with too low acid concentration, also results in high energy consumption.
Azeotropic distillation can be carried out using one reactor, one column, one condenser, and one receiving tank.
To improve the purity of formic acid, vacuum distillation should be used