Propellent Plate Type Evaporator Brief

Propellent is the leader brand of plate type evaporator in China. It has excellent 

technical team, strict quality control system. Plate type evaporator of PLS350, PLS500 and 

PLS600 is manufactured in China. The technology has reached international advanced lever. 

The application  effects are equal to or better than foreign brands.

The principle of operation for Propellent rising film plate evaporator involves the use of 

a number of plates，with alternate product and heating channels. Product and heating media 

are transferred in counterflow through their relevant passages. Defined plate distances in 

conjunction with special plate shapes generate strong turbulence, resulting in optimum 

heat transfer efficiency. Intensive heat transfer causes the product to boil while the 

vapor formed drives the residual liquid, as a rising film, moving up the plate. Residual 

liquid and vapors are separated in the downstream centrifugal separator. The wide inlet 

duct and the upward movement ensure optimum distribution over the total cross-section of 

the heat exchanger.

Products that are being processed in propellent’s evaporator include: pharmaceutical, 

Juice, starch, waste water.

Propellent evaporation system features:

1) High heat transfer efficiency, strong evaporation

Special designed plates provide high turbulence at relatively low Reynolds number, which 

makes high heat transfer coefficient.

2) Low residence time

The rapid movement of the thin film is the key to producing low residence time w as well 

as superior HTC’s，which is also very important for heat sensitive product.

3)  Compact size, convenient operation

Because of the high heat transfer coefficient, size of plate type heat exchanger is small. 

The small overall height makes convenient operation and easy observation. 

4) Small thermal loss

Compact size makes small surface area which leads to small thermal loss. No need of 

thermal isolate.

5) Easy maintenance

 The whole system is using plate heat exchangers, like plate type evaporator, plate type 

condenser and plate heat exchanger. They can be easily opened for inspection and 

maintenance by loosening the bolts and nuts, and also easily reassembled.

6) Flexible evaporation rate

As surface area can easily be added or removed, evaporation rate can be easily adjusted.

7) Low investment

Low metal consumption, compact size, low pressure resistance, small cooling water flow 

make low investment.