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Efficient Falling Film Evaporation Plant from China Suppliers | Quality Factory Solutions for Heat-Sensitive Liquids
Description
The liquid feed is introduced at the top of the calandria, where a distribution system ensures the formation of a uniform liquid film along the inner walls of the heating tubes. As the film flows downward under gravity, it is heated externally and begins to boil, partially evaporating along its path. The downward flow is further promoted by the co-current flow of vapor generated during boiling.
Separation of the remaining liquid film and vapor takes place in the lower section of the calandria and is completed in a downstream centrifugal droplet separator. To prevent dry spots—which can cause fouling and deposit accumulation—it is critical to maintain complete and even wetting of the entire heating surface. This can be achieved by using longer heating tubes, dividing the evaporator into multiple compartments, or implementing product recirculation.
Particular Feature
- ⭐ Best product quality, gentle evaporation, mostly under vacuum, and extremely short residence times in the evaporator.
- ⚙️ Simple process control and automation.
- 🔄 Flexible operation, quick start-up and easy switchover from operation to cleaning, uncomplicated changes of product.
- ⚡ High efficiency heat transfer — it is possible to design multiple-effect, thermal vapour recompression, and mechanical vapour recompression systems.
Fields of Application
- 🌿 Particularly suited for temperature-sensitive products, such as dairy products, fruit juices, plant extracts, sugar, and blood plasma.
- 💧 For liquids which contain small quantities of solids and have a low to moderate tendency to form incrustations.
Advantages of Zongheng
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Advanced Energy-Efficient Technologies
Integration of multi-effect evaporation and mechanical vapor recompression (MVR) systems significantly reduces energy consumption and operational costs.
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High-Quality and Durable Construction
Utilization of high-grade stainless steel and industrial alloys ensures corrosion resistance, durability, and long-term reliability under continuous operation.
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Comprehensive Customization and Turnkey Solutions
Tailored system design, layout, and material selection to meet specific client requirements, supported by end-to-end services from simulation to commissioning and training.
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Precision Automation and User-Friendly Control
Equipped with advanced PLC and HMI systems for real-time monitoring, precise process adjustments, remote control capabilities, and predictive maintenance.
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Stringent Quality Assurance and Global Compliance
Rigorous testing and inspection processes aligned with international standards (ISO, CE, ASME), ensuring safety, performance, and worldwide regulatory compliance.
Frequently Asked Questions
❓ What is a falling film evaporator and how does it work?
A falling film evaporator is a type of vertical shell-and-tube heat exchanger in which liquid feed is distributed at the top of the heating tubes and flows downward as a thin film under gravity. As the film descends, it is heated externally, causing partial evaporation. The resulting vapor and concentrated liquid are then separated in the lower section of the calandria and a centrifugal droplet separator.
❓ What types of products are best suited for falling film evaporation?
Falling film evaporators are especially well-suited for temperature-sensitive products such as dairy products, fruit juices, plant extracts, sugar solutions, and blood plasma. They are also ideal for liquids containing small quantities of solids with a low to moderate tendency to form incrustations.
❓ How is fouling and dry spot formation prevented in a falling film evaporator?
Dry spots and fouling are prevented by maintaining complete and even wetting of the entire heating surface. This is achieved through methods such as using longer heating tubes, dividing the evaporator into multiple compartments, or implementing product recirculation to ensure continuous film coverage.
❓ What energy-saving technologies can be integrated into a falling film evaporation system?
Falling film evaporators can be designed with multiple-effect evaporation, thermal vapor recompression (TVR), and mechanical vapor recompression (MVR) systems. These technologies significantly reduce steam and energy consumption, lowering overall operational costs.
❓ What international standards does Zongheng's falling film evaporation equipment comply with?
Zongheng's falling film evaporation systems are designed and manufactured in compliance with internationally recognized standards including ISO, CE, and ASME. Rigorous testing and inspection processes are applied throughout production to ensure safety, performance, and global regulatory compliance.
❓ Can the falling film evaporation system be customized for specific industrial requirements?
Yes. Zongheng offers comprehensive customization and turnkey solutions, including tailored system design, layout planning, and material selection based on specific client requirements. Full support is provided from initial simulation and engineering through to installation, commissioning, and operator training.