Benefits

Tetra Therm® Aseptic VTIS has long represented state-of-the-art direct UHT processing of premium quality, aseptic products. It​ is an aseptic processing unit for continuous UHT treatment with direct steam injection. Mainly for heat-sensitive low-acid products such as milk, enriched milk, cream, soy milk, formulated dairy products, ice-cream mix, dairy desserts as well as ESL (extended shelf life) products. The process is also suitable for smooth products like soups, sauces, non-dairy cream and other starch based products and can handle smaller particles.
 

Quick facts

System for continuous direct UHT treatment of liquid food products under aseptic conditions
 

Capacity
2,000 l/h to 30 000 l/h (variable capacity 1:2 is standard)
 

Applications
Milk, enriched milk, cream, soymilk, formulated dairy products, ice-cream mix, extended shelf life (ESL) products, dairy desserts, non-dairy cream, and smooth soups and sauces.

tetra therm aseptic vtis benefits
Tetra Therm® Aseptic VTIS

Premium quality with direct UHT

  • Low overall heat load minimizes impact on taste, colour and nutritional value
  • Suitable for a wide range of dairy and plant-based products
  • Highest operational efficiency for direct UHT systems on the market
Tetra Therm® Aseptic VTIS

Features

Steam injection

Product quality and efficiency

Steam is injected rapidly into the product, instant heating it from 80° to the UHT temperature, followed by condensation (only 0.1 seconds) and temperature equilibrium. The combination of a high sterilization temperature and a short heating time ensures that microorganisms and spores are deactivated with minimal impact on the product's taste and colour. The process also involves very low fouling, which in turn means outstanding clean-ability, less downtime for cleaning and overall lower cleaning costs.

Steam infusion

Minimizes impact on product taste, colour and consistency

The basic principle of steam infusion is to heat a product by passing it through an atmosphere of steam. The product's spreading system may vary, but the resulting milk droplet size must be uniform, to maintain a steady heat transfer rate. The steam infusion process is similar to steam injection system but gentler (less shear) which gives greater product stability. It is therefore especially good for whipping cream and products containing stabilizers. However, it requires more steam, cooling water and additional product losses which leads to a 4 – 8 % higher operating cost than steam injection.

Flash-cooling

Minimal product losses, efficient operation and maintenance

Flash cooling – which takes place in the condenser-equipped vacuum vessel - enables rapid cooling of the product. Partial vacuum is maintained by a pump and controlled to ensure the same amount of water is evaporated as was earlier added as steam. The large diameter and the conical shaped top, in combination with the long distance between the product inlet and vapour outlet ensure low carry over and minimal loss of flavour.

The compact vacuum vessel with built-in condenser gives you quick and efficient pre-sterilization and cleaning. It is also designed for easy access for inspection, service and maintenance.

Double balance tank system

Low product losses

There is one tank for product and another for water. The latter – a CIP header batch tank - is used as a second water tank at water-to-product change over, enabling a sharp water-to-product interface. In addition, a reduced bottom diameter shortens the mix phase. Volume-controlled filling and emptying minimise product losses to less than 150 litres per production run of 15,000 litres.

Heat exchanger protective panels

Great energy savings potential

Protective panels built around the Tetra Pak® Tubular Heat Exchanger encapsulate the equipment and contain the heat. This gives up to 6% savings on energy consumption. With added insulation, savings go up to 11%. The panels also increase operator safety since they reduce the risk of contact with hot surfaces.

Heat exchanger floating protection system

Longer lifetime and exceptional efficiency

Aseptic product in the inner tubes of the Tetra Pak® Tubular Heat Exchanger flows at a higher pressure than the untreated product on the shell side. A floating protection system allows for thermal expansion, greatly reducing the risk of damage from cracking, and consequent loss of sterility. In addition to extending lifetime, this improves food safety.

Combined heating solution

Keeps operating costs down

Instead of buying two different units, you can purchase a readymade combi model or upgrade your existing equipment to manage both direct and indirect heating methods. When producing premium products, the VTIS mode (direct UHT) gives optimal taste and colour. When producing a variety of products (i.e. both standard and premium quality) it is possible to run the equipment in Flex mode (indirect heating) or Plus mode (combining direct and indirect heating) and thereby lower utilities costs.

Automatic damper

For longer running times

Homogenizer dampers absorb pressure variation and shocks before and after the homogenizer. Automatic air refill maintains the air cushion in the homogenizer damper to ensure smooth operation. Without the air cushion, vibration and cavitation would occur and shorten the running time. Fully automated CIP is included - increasing operator safety, improving hygiene, and further optimizing the production cycle.

Dairy Processing Handbook

The Dairy Processing Handbook concentrates our vast know-how and provides in-depth, yet easy-to-understand, information on manufacturing processes. 

Explore our UHT treatment range

Contact our sales team

Service engineers training

Our sales teams are happy to answer any sales or product queries. Please fill out our form so we can better be of assis tance.

  • 1 Purpose
  • 2 Request
  • 3 Contact

Purpose of contact

Please select one option

Business area of interest

Select one or more business areas
Please select business area of interest

Contact our sales team

Summary

Purpose of contact
Business area of interest
  • 1 Purpose
  • 2 Request
  • 3 Contact

Specific area of interest

Please select one option

Contact our sales team

Summary

Purpose of contact
Business area of interest
  • 1 Purpose
  • 2 Request
  • 3 Contact

Scope of request

Please select one option

Food category

    Please select one option
    Please select one option
    Please select one option
    Please select one option
    Please select one option
Please select one option

Contact our sales team

Summary

Purpose of contact
Business area of interest
  • 1 Purpose
  • 2 Request
  • 3 Contact

Specific area of interest

Please select business area of interest

Contact our sales team

Summary

Purpose of contact
Business area of interest
Specific area of interest
Scope of request
Food category
  • 1 Purpose
  • 2 Request
  • 3 Contact

What describes your request the best

Please select one option
Please enter this field

Contact our sales team

Summary

Purpose of contact
Business area of interest
Message
Specific area of interest
Scope of request
Food category
What describes your request the best
Your role
  • 1 Purpose
  • 2 Request
  • 3 Contact

Company information

Please enter your email in this format: example@example.com
Please enter this field
Please enter this field
Please enter this field
Please enter this field
Please select one option
Please enter this field

By submitting this form, you confirm you have read and acknowledge Tetra Pak's privacy policy.

Thank you for your interest

Your request has been submitted to our teams and we will be in touch shortly. Please click on the button below if you want to submit another request or if you have another query for us.