Evaporation means heating up the solution containing volatile solutes to the boiling state by heating, so that some of the solvents are vaporized and removed, thereby enhancing the unit operation of solute concentration in solvents. The application of evaporation operation in industrial production has the following several occasions:
1., dilute the dilute solution to directly produce products or reconcentrate the concentrated solution (such as cooling crystallization) to make solid products, such as the concentration of electrolytic caustic soda, the concentration of sugar water solution and the various components.
The concentration of fruit juice
2. concentrated solution and recovery solvent, such as the concentration of benzene in the benzene solution of organophosphorus pesticide, and the evaporation of alcohol extract in the production of traditional Chinese Medicine
3. in order to obtain pure solvents, such as seawater desalination.
In a word, evaporation operations are widely used in the chemical industry, the food industry, the pharmaceutical industry and other industries.
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