The Tubular Pasteurizer is a high-efficiency continuous heat treatment equipment designed for liquid food processing, widely used in milk, juice, tea, beverages, alcohol, and condiments. It utilizes a multi-layer tube-in-tube heat exchanger to heat, hold, and cool the product with high thermal efficiency, stable operation, and strong adaptability. The system can be configured for pasteurization (72–85°C), high-temperature pasteurization (90–95°C), or ultra-high temperature (UHT) sterilization (120–137°C).
Working Principle
The tubular pasteurizer transfers heat between hot and cold fluids inside a tubular heat exchanger to achieve product heating and cooling. A typical process flow includes:
1. Preheating – Product is preheated by recovering heat from the sterilized liquid.
2. Heating – Heated by steam or hot water to the set temperature (72–137°C).
3. Holding – Product is held in the holding tube for 15–30 seconds to ensure sterilization.
4. Cooling – Product is cooled gradually in the regeneration and cooling sections to 4–25°C.
5. Discharge – Sterilized liquid enters an aseptic tank or filling system.
System Components
● Feed Pump – Ensures stable material flow and system pressure.
● Tubular Heat Exchanger – High-efficiency inner and outer tube design for superior heat transfer.
● Hot Water Section – Steam heating with PID temperature control system.
● Holding Tube – Maintains the product at the sterilization temperature for the required time.
● Cooling Section – Uses cold or chilled water to maintain product quality.
● Control Cabinet – PLC system for automatic temperature, flow, and time control with data logging.
● Safety Section – Equipped with sensors for temperature, pressure, and flow, with backflow protection.
Main Features
● High Heat Transfer Efficiency – Tubular design ensures turbulent flow and fast heat exchange.
● Strong Adaptability – Suitable for high-viscosity or particle-containing liquids (e.g., yogurt, juice with pulp).
● High Automation – PLC control with automatic temperature regulation and safety backflow protection.
● Energy Saving – Up to 90% heat recovery rate for reduced energy consumption.
● Hygienic Design – All product-contact parts are made of food-grade stainless steel (SUS304/316L).
● Easy Maintenance – Modular design for easy cleaning and integration with CIP systems.
Technical Parameters (Customizable)
| Processing Capacity | 0.5–20 tons/hour (customizable) |
| Sterilization Temperature | 72–137°C (adjustable) |
| Holding Time | 15–30 seconds |
| Heat Recovery Rate | ≥90% |
| Material | SUS304 / SUS316L |
| Heating Medium | Steam / Hot water |
| Cooling Medium | Cold water / Chilled water |
| Control Mode | Automatic / Semi-automatic |
| Outlet Temperature | 4–25°C (adjustable) |
| Cleaning Method | CIP cleaning interface |
Processing Capacity
● 0.5 – 15 t/h (custom larger capacity optional)
Sterilization / Pasteurization Temperature
● Pasteurization: 65–95°C
● High-temperature sterilization: 110–140°C
Heat Exchanger Type
● Tube-in-tube or multi-stage tubular sterilizer
● Optional: triple-tube or quadruple-tube for sensitive materials
Temperature Control
● PID automatic regulation
● Multi-point temperature monitoring
● Accuracy ±0.3–0.5°C
Heating Medium
● Steam (direct or indirect)
● Hot water circulation
Cooling Medium
● Chilled water
● Glycol solution
● Ice water
Power Supply
● 380 V / 220 V, 50/60 Hz
Working Pressure
● Product side: up to 2.5–4 MPa (high pressure resistance)
● Heating side: according to steam/water system
Control Options
● Manual
● Semi-automatic
● Fully automatic PLC + HMI
Material & Hygiene Standards
● Product Contact Material: SUS316L (standard)
● Outer Shell: SUS304
● Seals: Food-grade EPDM / PTFE
● Tube Type: Seamless sanitary stainless steel
● Surface Finish:
o Internal: Ra ≤ 0.6 μm or customized
o External: brushed stainless steel
● Welding:
o Orbital welding / TIG welding
o Smooth internal welds without dead corners
Compliance
● 3A / FDA / EHEDG
● GMP and HACCP standards
● Designed per ASME / DIN / GB requirements
System Advantages
● Efficient sterilization with stable product quality.
● Suitable for high-viscosity materials.
● Compact design with small footprint.
● Easy operation and high automation.
● Continuous operation for high productivity.
● Complies with food-grade sanitary standards (FDA / CE).
Applications
● Milk, yogurt, condensed milk.
● Juice, fruit beverages, tea drinks.
● Alcohol, soy sauce, vinegar, and condiments.
● Plant protein drinks and soy milk.
● Pharmaceutical and biological fermentation liquids.
Optional Configurations
● PLC + touch screen automatic control
● Flow meter & pressure sensors
● Hot water circulation system
● Steam-water mixing station
● Aseptic tank integration
● Homogenizer connection
● Vacuum deaerator
● Heat recovery modules
● Multi-tube sterilization combinations
Certifications & Delivery
● FAT (Factory Acceptance Test) before shipment
● Material/Welding Certificates
● CE / FDA documentation optional
● Delivery time: 4–10 weeks depending on capacity
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