Plate type falling film evaporator

Plate type falling film evaporator is also called lamellar type falling film evaporator.
The working principle of the plate falling film evaporator is similar to that of tube falling film evaporators. But plates are used as heat elements, instead of the tubes. The plates, material can be chose as SS304, SS316L or duplex steel 2205, will be spot welded. After welding, the plates are pressed hydraulically into their final form. The positive characteristics of the plate falling film evaporator result from the design of the plates. A film flows down the heating plate surface. Because of the large distances between the plates and the cylindrical shell, the secondary vapor has plenty of space to spread out. Due to the low speeds, droplets are not to be expected.

Applicable industries
1, black liquor treatment in paper-making industry
2, production/processes wastewater 
3, NMMO solvent concentration in lyocell fiber industry
4, other industries for concentration

Main characteristics:
1, The excellent cleaning properties: 
1.1 The mechanical cleaning of the plates can be executed in large spaces. 
1.2 Because of the large temperature differences between the operating and the cleaning temperature, the incrustations will peel off by their own. 
2, Low pressure drop on the process side.