What is the implementation of decompression evaporation
Distillation, evaporation and drying are all three basic operations commonly used in the preparation of the preparation, using heat energy, such as the preparation of distilled water, the concentration of concentrated Chinese herbal medicine leaching, the drying of the granules.
Evaporative evaporation, also known as vacuum evaporation, is carried out under the atmospheric pressure of the evaporation process of evaporation method. The secondary steam through the condenser after the discharge, then the secondary steam in the evaporator can form negative pressure.
But also increase the heat transfer temperature difference, strengthen the evaporation operation. At the same time, the requirements of heating heat is also reduced in the pharmaceutical production is widely used, vacuum distillation device is also applicable.
So as to form a certain degree of vacuum in the evaporator, the boiling point of the solution is reduced, in order to achieve the concentration of concentrated drugs or volatile solvents carried out the purpose of boiling evaporation method.As the solution boiling point decreases, to prevent or reduce the decomposition of heat-
