Answer :
EVAP.1 - Evaporation: In a 3-effect-evaporation process, multiple evaporators are used in series to progressively concentrate a liquid solution by removing the solvent through evaporation.
Typically, the process involves three evaporators arranged in series, with the first evaporator operating at the lowest pressure and temperature, and the last evaporator operating at the highest pressure and temperature.
The vapor generated in the first evaporator is condensed and used as the heating medium in the second evaporator. Similarly, the vapor generated in the second evaporator is condensed and used as the heating medium in the third evaporator.
EVAP.2 - Preheating with Last Evaporator Vapor:
In a 3-effect-evaporation process, it is indeed possible to use the vapor generated in the last evaporator to preheat the incoming solution fed to the first evaporator. This is commonly known as "forward feed" or "forward flow" configuration.
The vapor from the last evaporator, which is at the highest temperature and pressure, can be condensed and used as a heat source for the incoming solution in the first evaporator. .
The preheating of the ingoing solution with the vapor from the last evaporator helps in achieving energy efficiency and overall process optimization. It allows for better heat integration within the system and reduces the overall energy consumption of the evaporation process.
In conclusion, in a 3-effect-evaporation process, it is possible to use the vapor generated in the last evaporator to preheat the ingoing solution fed to the first evaporator, thereby maximizing energy efficiency and optimizing the evaporation process.
To learn more about evaporation
https://brainly.com/question/24258
#SPJ11
