The Pasteurization, Yogurt, and Ultra-High Temperature (UHT) Sterilizer (Three-in-One) is a multifunctional liquid food sterilization device that integrates pasteurization, yogurt heating and fermentation pretreatment, and ultra-high temperature sterilization. It is widely used in dairy products (milk, yogurt, flavored milk), beverages, and juices. With features of high efficiency, energy saving, and precise temperature control, it is ideal for small and medium-sized dairy processing plants or pilot production lines.
Main Functions
1. Pasteurization: Heats milk to 72–75°C for 15–20 seconds to effectively eliminate pathogenic bacteria while preserving nutrients and flavor.
2. Yogurt Pretreatment and Fermentation: Heats milk to 85–90°C for 5–10 minutes to denature whey proteins and improve yogurt texture. Includes cooling and constant temperature control for fermentation.
3. Ultra-High Temperature (UHT) Sterilization: Suitable for flavored milk, milk beverages, and juices. Heats to 90–105°C for 10–30 seconds to destroy heat-resistant bacteria while maintaining product quality.
Features
● Three-in-One Design: Integrates pasteurization, yogurt heating, and UHT sterilization in one unit, saving space and cost.
● High-Efficiency Heat Exchange: Uses tubular or plate heat exchangers for uniform heating and low energy consumption.
● Accurate Temperature Control: Equipped with an automatic temperature control system for precise regulation of temperature, flow, and holding time.
● Easy Operation: Touch-screen control allows mode switching between Pasteurization, Yogurt, and UHT modes.
● Energy Saving: Features heat recovery design and supports CIP automatic cleaning systems.
● Hygienic and Compact: Made of food-grade stainless steel (SUS304/316L), meeting dairy hygiene standards.
Working Principle
The product (such as milk) is pumped into the heating system and passes through different sections: preheating, holding, cooling, and outlet. Operators can select different working modes according to the production process: Pasteurization (72–75°C / 15–20s), Yogurt (85–90°C / 5–10min), or UHT (90–105°C / 10–30s).
Applications
● Pasteurized milk production
● Yogurt and fermented milk processing
● Flavored milk and milk beverages
● Juices, tea drinks, and plant-based beverages
● Educational, laboratory, and pilot dairy production lines
Technical Parameters (Customizable)
| Processing Capacity | 300–5000 L/h (customizable) |
| Sterilization Temperature | 65–105°C |
| Heating Medium | Steam / Hot water |
| Control Type | Fully automatic / Semi-automatic |
| Material | SUS304 / SUS316L |
| Cleaning System | CIP automatic cleaning system (optional) |
Processing Functions
● Pasteurization: 65–95°C
● Yogurt incubation: 38–45°C (stable ±0.5°C)
● UHT sterilization: 120–140°C (steam or superheated water)
Capacity Options
● 100 L / 200 L / 300 L / 500 L / 1000 L / 2000 L (custom available)
Heating Methods
● Steam heating (standard)
● Electric heating (optional)
● Hot water circulation system
Cooling Method
● Plate heat exchanger / tubular heat exchanger
● Chilled water or glycol cooling
Control Options
● Semi-automatic
● Fully automatic (PLC + HMI touchscreen)
Power Supply
● 380 V / 220 V, 50/60 Hz
Temperature Control
● PID temperature regulation
● Accuracy ±0.5°C
System Pressure
● Designed for pressure heating & vacuum cooling (optional)
Connections
● Tri-Clamp sanitary fittings
● Optional flow meter, pressure gauges, and data logging
Material & Hygiene Standards
● Contact Materials: SUS316L stainless steel (standard); SUS304 optional
● Non-Contact Materials: SUS304
● Surface Finish:
o Internal: mirror polish, Ra ≤ 0.4 µm
o External: matte or mirror stainless finish
● Seals: Food-grade EPDM / PTFE, resistant to high temperature
● Pipelines: Seamless sanitary stainless steel tubing
● Welding: Full argon welding, polished and hygienic
● Compliance:
o 3A, FDA, GMP requirements
o Design according to ASME / DIN / GB standards
Advantages
● Multi-purpose: suitable for various dairy processes.
● Precise temperature control ensures quality and nutrition.
● Hygienic and safe with food-grade materials.
● Energy-efficient with high heat recovery rate.
● User-friendly with simple mode switching and maintenance.
Installation, Operation & Maintenance
● Installation
● Requires steam, water, drainage, electricity, and cooling/chilled water
● Suitable for small to large processing rooms
● Pre-installed pipelines optional
● Operation Process Example
1. Load raw milk or liquid
2. Select processing mode (pasteurization / yogurt / UHT)
3. Automatic heating and temperature holding
4. Optional fermentation period (for yogurt)
5. Cooling and outlet discharge
6. CIP or manual cleaning after production
● Maintenance
● Regular check of seals and pipeline connections
● Calibration of temperature sensors
● Cleaning & sanitizing internal surfaces
● Easy-access structure for quick inspection
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