Tubular Pasteurizer (Tube-in-Tube Sterilizer)

Tubular Pasteurizer Manufacturer for Dairy, Beverage & Liquid Food Processing

As an experienced milk sterilization and cleaning equipment manufacturer, YME designs and supplies high-efficiency tube-in-tube pasteurization and sterilization systems for dairy, beverage, and liquid food processing plants.

The tubular pasteurizer is designed for continuous thermal treatment of liquid products, particularly those with higher viscosity or containing particles. It is widely used in milk pasteurization, yogurt processing, fruit juice sterilization, tea beverage production, plant-based drink processing, and condiment manufacturing.

Using a multi-stage tubular heat exchanger, the system performs preheating, sterilization, holding, and cooling in a continuous process. Compared with plate pasteurization systems, tubular designs offer stronger pressure resistance, better adaptability for viscous liquids, and stable operation for long production cycles.

As a professional Tubular Pasteurizer Manufacturer, YME provides customizable systems suitable for pasteurization (72–85°C), high-temperature pasteurization (90–95°C), and UHT sterilization (120–137°C) depending on the product process requirements.

Working Principle of Tubular Pasteurizer

The tubular pasteurizer transfers heat through concentric stainless-steel tubes, allowing hot and cold fluids to exchange heat efficiently while maintaining sanitary separation.

A typical processing flow includes:

1. Preheating
Incoming product is preheated by recovering heat from sterilized liquid, improving overall energy efficiency.

2. Heating
The product is heated to the required temperature using steam or hot water circulation, depending on process configuration.

3. Holding
The liquid passes through a holding tube designed to maintain the required temperature for 15–30 seconds, ensuring effective microbial reduction.

4. Cooling
After heat treatment, the product is cooled through regeneration and chilled water sections to reach the target outlet temperature.

5. Discharge
The treated liquid is transferred to an aseptic tank, fermentation tank, or filling system for further processing.

This continuous process ensures consistent sterilization performance while maintaining product flavor, nutrients, and texture.

Main System Components

A standard tubular pasteurization system includes:

Feed Pump
Provides stable flow rate and pressure throughout the process.

Tubular Heat Exchanger
High-efficiency tube-in-tube structure designed for reliable heat transfer and long-term operation.

Heating Section
Steam or hot water heating system with PID temperature regulation.

Holding Tube
Maintains the product at sterilization temperature for a precise residence time.

Cooling Section
Uses chilled water, glycol, or cold water to protect product quality.

Control Cabinet
PLC control system for temperature, flow rate, and holding time management, with optional data recording.

Safety Monitoring System
Includes temperature sensors, pressure monitoring, and backflow protection.

Key Features of YME Tubular Pasteurizers

High Adaptability for Complex Liquids

Tubular heat exchangers are suitable for products with higher viscosity or particles, such as:

• yogurt base milk

• fruit juice with pulp

• plant-based beverages

• sauces and condiments

Efficient Heat Transfer

The tubular design promotes turbulent flow, ensuring efficient heat exchange and stable sterilization results.

Energy-Efficient Operation

Heat regeneration design enables heat recovery rates up to 90%, reducing steam and cooling energy consumption.

Hygienic Food-Grade Construction

All product-contact parts are made from food-grade stainless steel (SUS304 / SUS316L) and designed for hygienic processing.

Reliable Automation

PLC-based control ensures accurate regulation of temperature, flow rate, and holding time, supporting stable production.

Easy Integration with Processing Lines

The system can be connected with:

• homogenizers

• fermentation tanks

• aseptic storage tanks

• beverage filling systems

• CIP cleaning systems

Technical Parameters (Customizable)

Process Configuration Options

Processing Capacity

0.5 – 15 t/h standard capacity, larger systems available on request.

Sterilization Temperature

• Pasteurization: 65 – 95°C

• High-temperature sterilization: 110 – 140°C

Heat Exchanger Design

• Tube-in-tube sterilizer

• Multi-stage tubular heat exchanger

• Optional triple-tube or multi-tube design for sensitive products.

Temperature Control

• PID temperature regulation

• Multi-point monitoring

• Accuracy ±0.3 – 0.5°C

Materials & Hygiene Standards

Product Contact Material: SUS316L stainless steel
Outer Shell: SUS304 stainless steel
Seals: Food-grade EPDM / PTFE

Surface Finish:

• Internal surface: Ra ≤ 0.6 μm

• External surface: brushed stainless steel

Welding:

• Orbital welding / TIG welding

• Smooth internal welds without dead corners

The system design complies with:

• 3A

• FDA

• EHEDG

• GMP

• HACCP

• ASME / DIN / GB design standards

Typical Applications

As a professional Tubular Pasteurizer Manufacturer, YME systems are widely used in liquid food processing industries:

Dairy Processing

• milk pasteurization

• yogurt base milk heating

• condensed milk processing

Beverage Production

• fruit juice sterilization

• tea beverage processing

• flavored milk production

Plant-Based Drinks

• soy milk processing

• almond milk sterilization

• oat beverage production

Condiments & Liquid Foods

• soy sauce

• vinegar

• sauces and liquid seasonings

Fermentation & Bioprocessing

• alcohol processing

• fermentation liquids

• biological liquid treatment

Optional Configurations

To meet different production requirements, the system can be equipped with:

• PLC + HMI full automatic control

• Flow meter and pressure sensors

• Hot water circulation system

• Steam-water mixing station

• Aseptic tank integration

• Homogenizer connection

• Vacuum deaerator

• Heat recovery modules

• Multi-tube sterilization configuration

Why Choose YME as Your Tubular Pasteurizer Manufacturer

YME focuses on designing reliable tubular pasteurization equipment for dairy, beverage, and liquid food manufacturers.

Our tubular systems are engineered to deliver:

• stable sterilization performance

• strong adaptability for complex liquids

• hygienic food-grade design

• flexible customization for different products

• reliable long-term operation in industrial processing lines

From equipment configuration to installation support, YME provides practical solutions tailored to the requirements of modern food processing plants.