Forced circulation evaporator

A forced circulation evaporator utilizes a pump to actively circulate liquid through a heat exchanger, promoting efficient heat transfer and enabling the evaporation of viscous, fouling-prone liquids. 

The liquid is circulated through the calandria by means of a circulation pump, where it is superheated at an elevated pressure, higher than its normal boiling pressure. By entering the separator, the pressure in the liquid is rapidly reduced, resulting in some of the liquid being flashed or rapidly boiled off. The flow velocity in the tubes and the liquid temperature can be controlled to suit the product requirements independently of the pre-selected temperature difference.                    

Forced Circulation Evaporators are typically used for solutions and slurries which present a risk of fouling or scaling. Fouling occurs at high temperatures and high concentrations. Scaling occurs with salts that are likely to precipitate. The forced circulation evaporator maintains a full tube, which mitigates these risks. Forced circulation evaporators have longer product residence time and higher liquid volume in the tube.                                                                                                                      

Particular Features