The Forced Circulation Evaporator is an evaporation device that uses a forced - circulation pump to drive the liquid to flow in a circular motion on the heating surface. Unlike natural - circulation evaporators, the forced - circulation evaporator provides greater driving force through a forced - circulation pump, enabling the liquid to form a high - speed flow on the heating surface, thereby increasing the heat - transfer efficiency. This type of equipment is widely used in industries such as food, pharmaceuticals, and chemical engineering, and is particularly suitable for the concentration and purification of materials with high viscosity, easy crystallization, and easy scaling.

The Falling - film Evaporator is a highly efficient heat - exchange equipment mainly used in the evaporation and concentration process of liquids. Its working principle is as follows: The liquid or solution is fed into the top of the evaporator. Under the action of gravity, it forms a thin film along the inner wall of the tube. Heat is transferred from the heat source (usually steam) outside the heating tubes, causing the liquid to evaporate rapidly, thus achieving the purpose of concentration or purification.
This design not only improves the evaporation efficiency but also helps reduce energy consumption. It is commonly used in applications such as material concentration and solvent recovery in industries like food, pharmaceuticals, and chemical engineering.