Freeze Drying Process

A freeze drying process second to none

The Batch Plant RAY™ - freeze drying process - A result of many years of plant and process development

In addition to actual plant delivery, Niro has the experience and market know-how to support you in your product research and feasibility studies.

In the process of freeze drying deep-frozen products are dried at temperatures below -18°C. No thawing of the product takes place and its quality is preserved.

The Atlas RAY™ concept is the result of many years of plant and process development based on the research and collaboration with our customers in all parts of the world. The result is a freeze drying process - as shown in the diagram - that is second to none.

Freeze Drying Process - RAY 125 diagram

1. TUNNEL FREEZING/FROST STORAGE
One 8-hour preparation shift provides sufficient product for 24 hours of freeze drying. Freezing is by the "first in/first out" principle.

2. TRANSPORT BY OVERHEAD RAIL
Trolleys carry the product trays from freezing, from freeze drying to emptying. A simple, hygienic, and safe system.

3. RAY™ FREEZE DRYER
Fully automatic control of the drying cycle for each batch. Just close the door and press the button.

4. HEAT SUPPLY SYSTEM
Drying is carefully controlled throughout the temperature range - from below freezing temperature (brine) or room temperature (cooling water) up to 130oC - to ensure perfect product quality.

5. VACUUM SYSTEM
Process vacuum is achieved in less than eight minutes.

6. DE-ICING
(Type CDI)

7. REFRIGERATION SYSTEM
Incorporates highly efficient refrigeration compressors with automatic capacity control.

8. PC/PLC CONTROL SYSTEM
The PC control system ensures optimal operating conditions throughout the plant - freezing, drying and associated heating, vacuum and refrigeration systems. Remote control via modem supplied as option.

Read more about the freeze drying process. It is a superior preservation method for a variety of foods and food ingredients. The Atlas products set the world standard for design, operation and quality. The delivery programme includes plant sizes ranging from pilot scale to large industrial batch and continuous plants.

The advanced technology and efficient design of the Atlas plants ensure the preservation of excellent quality in a wide range of food products - vegetables, temperate and tropical fruits, fish, meat, TV-dinners, coffee, flavour essences and many other products.

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GEA Niro is the market leader in development, design and engineering of spray drying and spray dryer technology.


GEA Niro - Gladsaxevej 305 - P.O. Box 45 - 2860 Søborg, - Denmark
Tel +45 3954 5454 - Fax +45 3954 5800 - Email
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A Company of the GEA Group
For US inquiries, please visit GEA Process Engineering Inc.: http://www.niroinc.com/