Wiped Film Evaporator (WFE) Designing & Manufacturing by INVEXOIL
Invexoil designs and manufactures industrial equipment, and Wiped Film Evaporators for your specific needs. These systems use various industries’ latest technology for thermal separation and concentration processes.
What is a Wiped Film Evaporator?
A Wiped-Film Evaporator (WFE) is a type of evaporator that uses a thin film of liquid to enhance heat transfer. Commonly used in the chemical and pharmaceutical industries, WFEs are ideal for processing sensitive or heat-sensitive products. Designed for continuous operation, these evaporators are versatile and can handle various applications, high heat transfer coefficients, and gentle or specific-temperature products.
Wiped Film Evaporator Design and Functionality
The design of a Wiped Film Evaporator consists of a cylindrical body and a high-speed rotating rotor. This rotor spreads the feed liquid into a thin film on the inner surface of the cylinder. The feed material enters from the top and flows down the cylinder in a thin film. Heat can be supplied through steam, hot oil, or electric heaters, with an external jacket for heat transfer to the fluid process. The continuous renewal of the thin film by the rotor ensures heat transfer and prevents fouling, making WFEs suitable for high-viscosity and fouling products.
Wiped Film Evaporator Operating Principles
WFEs work on the principle of separation of components based on their boiling points. As the mixture is fed continuously into the evaporator, it contacts the heated surface, and the components with lower boiling points vaporize first. The rotor’s wiping action ensures a uniform thin film, for efficient heat transfer and rapid evaporation. The vaporized components are collected, and the higher boiling point materials remain as a concentrated liquid which is then removed.
Wiped Film Evaporator Applications and Benefits
Wiped Film Evaporators are used in various industries including chemical processing, pharmaceuticals, food processing, and biotechnology. Their high efficiency, minimal fouling, and compact design offer advantages over traditional evaporators. WFEs can operate under a vacuum, ideal for heat-sensitive products. They are also good for products that require specific temperature control and gentle handling.
How to Choose a Wiped Film Evaporator
Choose the right WFE by considering the application requirements, product type, heat transfer required, and operating conditions. Maintenance and troubleshooting needs are also important. Consult with INVEXOIL’s process experts or engineers to ensure the chosen WFE meets the application and performs optimally.
Wiped Film Evaporator Maintenance and Troubleshooting
Regular maintenance is key to WFE performance. This includes cleaning the evaporator and its parts, inspecting for wear and tear, and replacing worn-out parts. Troubleshooting common issues like fouling, scaling, and overheating can prevent downtime and ensure consistency.
Wiped Film Evaporator Upgrading and Customizing
WFEs can be upgraded or customized to suit your application. Modifications can include changing the rotor design, adding condensers or vacuum systems, or changing materials of construction. Upgrading or customizing WFEs can improve performance, efficiency, and lifespan. Talk to INVEXOIL‘s process experts or engineers to find the best upgrade or customization for your application.
Technical Details of Wiped Film Evaporator
In the table below you can find technical information on the design such as Cylindrical Body, Rotor, Heating System, External Jacket, and Condenser. The technical explanation of operating conditions like Pressure, Temperature, and Residence Time. The technical overview of WFE’s main components: Rotor Blades, Wipers, and Vacuum Pump.
Stage | Part | Description |
Design of WFE |
Cylindrical Body | The evaporator consists of a cylindrical body with a high-speed rotating rotor distillation. |
Rotor | The rotor spreads the feed liquid into a thin film on the inner surface of the cylinder distillation. | |
Heating System | Heat can be supplied through steam, hot oil, or electric heaters distillation. | |
External Jacket | Facilitates heat transfer to the process of fluid distillation. | |
Condenser | Some designs include an internal condenser for true short-path distillation. | |
Operating Conditions |
Pressure | Operates under high vacuum (0.5 mBar or lower) to reduce operating temperatures distillation. |
Temperature | Heating temperature ranges from room temperature to 250°C (upgradable to 300°C). | |
Residence Time | Short residence time minimizes heat history to prevent thermal degradation distillation. | |
Components of WFE |
Rotor Blades | Designed to form a thin film and ensure efficient heat transfer distillation. |
Wipers | Continuously clean the heat transfer surface to prevent fouling distillation. | |
Vacuum Pump | Required for maintaining the vacuum conditions distillation. |
Scientific Parameters of Wiped Film Evaporator
WFE’s technical parameters and their descriptions are listed in the table below:
Parameters | Description |
Heat Transfer Coefficient | High heat transfer coefficients due to the thin film and high-speed rotation distillation. |
Evaporation Rate | Optimized evaporation rate achieved through efficient heat transfer and minimized pressure drop distillation. |
Surface Area | The evaporation area ranges from 0.1 to 20 square meters, depending on the scale of the evaporator. |
Flow Rates | Typical flow rates vary from 5 to 600 liters per hour, depending on the application. |
Viscosity Handling | Capable of processing high-viscosity materials like polymers and resin distillation. |
Fouling Resistance | Designed to handle fouling-prone materials with continuous cleaning mechanisms and distillation. |
Why Choose Invexoil?
- Expertise and Experience: Years of experience in designing and manufacturing industrial equipment with the latest technology.
- Custom Solutions: Equipment designed to fit your specific needs and operation.
- Guaranteed Quality: Premium materials and international standards in equipment manufacturing.
Invexoil delivers innovative solutions through the design and production of Wiped Film Evaporators, ensuring optimal efficiency and performance for diverse industries. Contact us for more information and consultation.