Falling Film Evaporator
- Minimize fouling on the heated surface
- Cost-effective due to lower energy inputs
- Deals with corrosive liquids and gases
- Cleansable mechanically
- Reduced heat degradation effects
- Performance offers high efficiency
- Advanced process control
- Efficient heat transfer for rapid evaporation
- Compact design and smallest Footprints
- Minimal liquid hold-up
- High heat transfer coefficients
Standards
Product Overview
A falling film evaporator is a type of heat exchanger used for the concentration or evaporation of liquids in industrial processes. It operates by allowing the liquid to flow as a thin film down the inner surface of vertical tubes or plates, while a heating medium, such as steam or hot water, is applied to the outer surface of the tubes or plates.
The liquid to be evaporated is fed into the top of the falling film evaporator, and it forms a thin film that flows downward due to gravity. The heating medium is circulated on the outer surface of the tubes or plates, causing the liquid film to evaporate as it moves downward, concentrating the solution or removing the solvent. The vapor generated is collected at the bottom of the evaporator, and the concentrated liquid or product is collected separately.
Falling film evaporators are known for their high heat transfer rates, efficient operation, and ability to handle heat-sensitive materials. The thin film formed on the inner surface of the tubes or plates provides a large surface area for heat transfer, allowing for fast evaporation with minimal residence time, which is beneficial for heat-sensitive liquids. The vertical configuration of the evaporator also allows for easy scaling up or down to accommodate different production capacities.
Falling film evaporators are commonly used in industries such as food and beverage, dairy, chemicals, and pharmaceuticals for processes such as concentration, desalination, or solvent recovery. However, careful control of operating parameters such as liquid flow rate, temperature, and pressure is important to optimize performance, prevent issues such as fouling or excessive pressure drop, and ensure efficient and safe operation.
Safe Design
Design is the safest way to update values. This is due to highest specification.
High Operating Efficiency
Shell side baffles enabled a high level of operational efficiency while also allowing for manageable reductions in fluid pressure.
The Next Generation of Evaporators
A highly experienced team of mechanical, process, and thermal design experts collaborated to optimise each and every aspect of Evaporators designs for the next generation design.
Applications
Renewable Energy Industry
Falling film evaporators are used for concentration and evaporation of sugar beet or sugar cane juice in the sugar industry. They are commonly used for producing high-quality sugar syrups or molasses with specific sugar concentrations for further processing into refined sugar or other sugar-based products.
Pulp and Paper Industry
Falling film evaporators are used for concentration of black liquor in the pulp and paper industry. They are commonly used for recovering and concentrating valuable chemicals from black liquor, such as lignin, hemicellulose, and inorganic compounds, for further processing or reuse.
Sugar Industry
Falling film evaporators are used for concentration and evaporation of sugar beet or sugar cane juice in the sugar industry. They are commonly used for producing high-quality sugar syrups or molasses with specific sugar concentrations for further processing into refined sugar or other sugar-based products.
Dairy Industry
Falling film evaporators are used for concentration of milk and dairy products, such as whey, cream, and lactose. They are commonly used for removing water from dairy products to increase their shelf life, improve their stability, and reduce transportation costs.
Chemical Industry
Falling film evaporators are used for concentration and purification of various chemicals, such as acids, solvents, polymers, and specialty chemicals. They are also used for recovering valuable solvents from process streams and for concentrating chemical solutions to achieve desired product specifications.
Pharmaceutical Industry
Falling film evaporators are used for concentration and purification of pharmaceutical intermediates and active pharmaceutical ingredients (APIs). They are commonly used for removing solvents from pharmaceutical formulations, concentrating drug solutions, and producing dry powders or granules for further processing.