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Help CenterDouble-Effect Falling Film Evaporators 304 Stainless Steel Shell and Tube Heat Exchanger Automatic Operation
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Welcome to Qingdao Conqinphi Environmental Technology Group Co., Ltd. As a professional manufacturer established in 2015, we specialize in advanced evaporation and heat exchange solutions. Our Double-Effect Falling Film Evaporators with 304 Stainless Steel Shell and Tube Heat Exchanger are designed to deliver superior efficiency, reliability, and automation for demanding industrial processes. With a factory spanning over 10,000 square meters and an annual export value exceeding US$10 million, we bring world-class engineering and quality control to every unit. This product is the result of years of R&D and field experience, ensuring optimal performance for concentration, evaporation, and solvent recovery applications.
Our double-effect falling film evaporator combines two evaporation stages in a compact design, maximizing energy utilization and minimizing operating costs. The shell and tube heat exchanger, constructed entirely from 304 stainless steel, offers excellent corrosion resistance and thermal conductivity, making it ideal for handling a wide range of liquids including heat-sensitive materials, food products, pharmaceuticals, and chemical solutions. The fully automatic operation ensures consistent output with minimal manual intervention, reducing labor costs and human error.
Key Features & Technical Advantages
- Double-Effect Design: Utilizes vapor from the first effect as heating medium for the second effect, achieving up to 50% energy savings compared to single-effect evaporators.
- 304 Stainless Steel Construction: All wetted parts, including shell, tubes, and distribution plates, are made of 304 stainless steel, ensuring long service life and easy cleaning.
- Shell and Tube Heat Exchanger: High heat transfer coefficient, low fouling tendency, and robust construction suitable for vacuum and pressure operation.
- Automatic Operation: PLC-based control system with touch screen interface, allowing precise adjustment of temperature, pressure, feed rate, and discharge concentration. Real-time monitoring and alarm functions.
- Falling Film Distribution: Patented liquid distributor ensures uniform film formation on the tube walls, preventing dry spots and scaling, thus maintaining high efficiency.
- Compact Footprint: Vertical design saves floor space, ideal for retrofitting into existing production lines.
- Customizable Capacity: Available in various sizes from pilot-scale to industrial production, with evaporation capacities ranging from 50 kg/h to 10,000 kg/h (or as per customer requirement).
- Low Maintenance: Easy access for inspection and cleaning, durable seals, and standardized components reduce downtime.
Technical Specifications (Typical)
| Parameter | Value / Range |
|---|---|
| Material of Construction | 304 Stainless Steel |
| Number of Effects | 2 |
| Heat Transfer Area (per effect) | Customizable (e.g., 10–200 m²) |
| Operating Temperature | Up to 150°C (depending on pressure) |
| Operating Pressure | Atmospheric to full vacuum |
| Evaporation Capacity | 50 – 10,000 kg/h (custom) |
| Control System | PLC + HMI (Siemens or equal) |
| Power Supply | 380V / 50Hz (3-phase) or as required |
| Certifications | ISO9001, HACCP, OHSAS18001, etc. |
Benefits to Your Business
- Energy Efficiency: Double-effect design reduces steam consumption by ~40-50%, significantly lowering utility bills.
- Product Quality: Gentle evaporation at low temperature (under vacuum) preserves heat-sensitive compounds, flavor, and nutritional value.
- Increased Productivity: Automatic operation allows continuous 24/7 production with consistent output quality.
- Versatility: Suitable for concentrating fruit juices, milk, whey, pharmaceutical extracts, chemical solutions, and wastewater treatment.
- Easy Integration: Modular design can be combined with pre-heaters, condensers, and vacuum systems to form a complete evaporation line.
At Qingdao Conqinphi Environmental Technology Group, we are committed to delivering high-quality, reliable equipment. Our factory spans 10,000–30,000 square meters, with over 200 skilled employees and an annual export value of US$10 million to US$50 million. We hold multiple certifications including ISO9001, HACCP, OHSAS18001, and SA8000, ensuring that our products meet rigorous international standards. Our main markets span North America, Europe, Southeast Asia, Africa, and the Middle East, and we have shipped thousands of units to satisfied customers worldwide. We provide comprehensive after-sales support, including installation guidance, commissioning, and spare parts supply. Choose Conqinphi for your evaporation needs — contact us today for a customized solution tailored to your process.
Frequently Asked Questions (FAQ)
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What is the working principle of a double-effect falling film evaporator?
In the first effect, preheated liquid is fed from the top and forms a thin film on the inside of heated tubes. Vapor generated is separated and used as heating medium for the second effect, which operates at a lower pressure. The concentrated liquid is collected at the bottom of each effect. -
Can this evaporator handle heat-sensitive materials?
Yes, the falling film design allows very short residence time (seconds) and operation under vacuum, which lowers the boiling temperature, making it ideal for heat-sensitive products like fruit juices, milk, and pharmaceutical extracts. -
What is the advantage of 304 stainless steel over other materials?
304 stainless steel offers excellent corrosion resistance, high strength, good weldability, and is easy to clean. It is food-grade and suitable for pharmaceutical and chemical applications where hygiene and durability are critical. -
Is the operation fully automatic? Can I integrate it with my existing system?
Yes, the standard unit comes with a PLC and HMI for automatic control. We can also integrate with your existing DCS or SCADA system via Modbus or Profibus. The machine adjusts parameters in real time to maintain optimal performance. -
What is the typical evaporation capacity range?
Our standard capacities range from 50 kg/h to 10,000 kg/h, but we can customize to meet your specific requirements. Please provide your feed rate, initial concentration, and final concentration for a quote. -
What certifications do you have for this equipment?
Our factory is certified under ISO9001, HACCP, OHSAS18001, SA8000, and others. We can also provide material certificates, pressure vessel design calculations, and third-party inspection reports upon request. -
What is the delivery time and shipping port?
Typical lead time is 6–8 weeks from order confirmation, depending on customization. All shipments are made from Qingdao Port, China. We can arrange sea, air, or express freight. -
Do you provide installation and after-sales support?
Yes, we offer technical documentation, remote troubleshooting, and optional on-site installation supervision. We also stock common spare parts for quick delivery.
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