La description
FD series Freeze
Dryer for Food products
Introduction for Freeze drying technology:
Freeze-drying, also known
as lyophilisation, or cryodesiccation, is
a dehydration process typically used
to preserve a perishable material or make the material
more convenient for transport. Freeze-drying works
by freezing the material and then reducing the
surrounding pressure to allow the frozen water in the
material to sublimate directly from the solid phase to
the gas phase.
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The freeze drying process is to freeze the materials firstly, and
after frozen the products will be load into the vacuum drying tank
which will bring the vacuum environment for the ice to sublimate to
vapor, and with the condenser inside the tank condense the vapor to
ice on the surface of the coils, the products will be
dehydrated.
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Working principle of Freeze drying
The technology of Vacuum freeze drying is mainly utilizing the
principle that water will sublimation directly from ice to vapor
when it is in some specific vacuum environment. The freeze
drying process is to freeze the materials firstly, and after frozen
the products will be load into the vacuum drying tank which will
bring the vacuum environment for the ice to sublimate to vapor, and
with the condenser inside the tank condense the vapor to ice on the
surface of the coils, the products will be dehydrated.
Advantages of Freeze dried products:
There are several advantages of freeze-dried products when compared
to regular hot air dried products.
1) The freeze dried products have long preservation time. If a
freeze-dried substance is sealed to prevent the reabsorption
of moisture, the substance may be stored at room
temperature without refrigeration, and be protected against
spoilage for many years. Preservation is possible because the
greatly reduced water content inhibits the action
of microorganisms and enzymes that would
normally spoil or degrade the substance.Â
2) Easy transportation. With light weight and well packed
freeze dried products can be easily transport by normal containers
or any other transportation method. No needs for cold storage
facilities therefore save a lot of cost for transportation.
3) Better quality products. Freeze drying causes less damage
to the substance than other dehydration methods using
higher temperatures. Freeze-drying does not usually cause shrinkage
or toughening of the material being dried. In addition, appearance,
flavors, smells and nutritional content generally remain unchanged,
making the process popular for preserving high quality food.
4) Â Â Extremely high rehydration
capacity. Freeze-dried products can be rehydrated
(reconstituted) much more quickly and easily because the process
leaves microscopic pores. The pores are created by the ice crystals
that sublimate, leaving gaps or pores in their place. This is
especially important when it comes to instant or convenient food
uses.
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Main components of freeze drying system:Â
> FD drying system (FD drying tank)
> Heating system
> Cold trap condensing and defrosting system
> Vacuum system
> Freezing system (freezer)
> Refrigeration system
> Material handling system
> Control system
| Pays: |
China |
| N ° de modèle: |
FD-5 ~ 200
|
| Prix FOB: |
( Negotiable ) (Negotiable)
Obtenir le dernier prix
|
| Localité: |
- |
| Prix de commande minimale: |
- |
| Commande minimale: |
1 Set |
| Packaging Detail: |
Seaworthy packing with metal frame, fittings packed in wooden box. |
| Heure de livraison: |
30 ~ 90 days |
| Capacité de Fournir: |
50 Set per Year |
| Payment Type: |
T/T, L/C |
| Groupe de produits : |
Industial freeze dryer
|
