The tube-in-tube condenser, equipped with an inter-wall condenser, a water ring vacuum pump with a heat pump, a coil condenser, and a water ring vacuum pump condenser that also serves as a material preheater, optimally utilizes the heat from the secondary steam at the end of the process, while reducing the consumption of cooling water.
This multi-effect falling film evaporator, featuring a tubular condenser design, condenses the secondary steam at the final effect to water of the same temperature, which is then discharged from the condenser. The condensed water is of high temperature and soft, making it highly usable. The water ring vacuum pump extracts non-condensable gases and a small amount of steam from the evaporator and discharges them into the atmosphere.
The system maintains a specific vacuum degree for each effective evaporation. Compared to the use of a hydraulic spray nozzle, it consumes less cooling water and electricity. In a tube-type cooler, the fluid flows both within the tube side and shell side, which is a crossflow, resulting in a smaller correction coefficient for the logarithmic mean temperature difference.
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