When it comes to evaporators, two common types are the climbing film and falling film evaporators.
4 Key Points to Consider When Choosing Between Climbing and Falling Film Evaporators
1. Direction of Liquid Flow
In a climbing film evaporator, the liquid feed moves upwards against gravity. This is achieved by heating the liquid with steam as it rises through a corrugated plate.
In contrast, a falling film evaporator directs the liquid downward under gravitational force. The liquid enters from the top and flows in a thin film along the walls of tubes.
2. Heat Transfer Mechanism
Climbing film evaporators promote efficient heat transfer as the liquid forms a thin film along the walls of the evaporator. This type is particularly effective for liquids with high viscosity or those prone to fouling.
Falling film evaporators, on the other hand, offer rapid evaporation and cooling. The hot utility flowing in the shell instantly converts the liquid into vapor. This makes them ideal for heat-sensitive products.
3. Application Suitability
Climbing film evaporators are best suited for industries dealing with high viscosity or fouling products. They handle these challenges efficiently due to their upward flow and heat transfer mechanism.
Falling film evaporators are commonly used for heat-sensitive products. Their short product contact times and low temperature differences between the heating media and boiling liquid make them a preferred choice in such applications.
4. Process Requirements
The choice between climbing and falling film evaporators ultimately depends on the specific requirements of the process and the properties of the liquid feed. Each type has its unique advantages and is designed to meet different needs.
Continue Exploring, Consult Our Experts
Looking for high-quality falling film evaporators for heat-sensitive products?
KINTEK offers rapid evaporation and cooling with short product contact times and low temperature differences.
Get in touch with us today to find the perfect solution for your laboratory needs.
