The dual effect external circulation vacuum concentration evaporator (dual effect external circulation concentrator) is an energy-saving natural circulation heated evaporation concentration equipment. Its working principle is based on multi-stage evaporation technology, which concentrates solutes in the solution through multiple evaporation and condensation processes, while achieving energy recycling. The dual effect external circulation vacuum concentration evaporator is widely used in the concentration process of chemical, pharmaceutical, food and other industries, especially suitable for low-temperature vacuum concentration of thermosensitive materials such as traditional Chinese medicine, western medicine, glucose, brewing, starch, oral liquid, chemical, food, monosodium glutamate, dairy products, etc.The following is a detailed introduction to the working principle of the device:
The working process of the dual effect external circulation vacuum concentration evaporator is mainly divided into four stages: heating, evaporation, condensation, and circulation:
1. Heating: Heating is provided by a heat source (such as steam, hot water, etc.) to increase the temperature of the solution inside the evaporator.
2. Evaporation: Solutes in the solution begin to evaporate, forming steam. The steam is separated from the liquid phase by a separation device inside the evaporator, resulting in relatively enriched steam and relatively concentrated liquid phase.
3. Condensation: Steam enters the condenser and is converted into liquid through condensation (usually carried out by a cooling medium such as cold water). During the condensation process, solutes in the steam are enriched in the liquid to achieve solute concentration.
4. Circulation: The liquid processed by the condenser is pumped back to the evaporator and continues to participate in the next evaporation process, forming a cycle that allows energy to be recycled.