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Basic principle of vacuum freeze-drying
1. Freezing Phase: The material is rapidly cooled to sub-zero temperatures, solidifying free and bound water to preserve structural integrity.
2. Primary Drying (Sublimation): Under high vacuum, controlled heating enables ice sublimation, with vapor captured via desiccants or adsorption traps instead of a conventional condenser.
3. Secondary Drying (Desorption): Residual moisture is removed at elevated temperatures, yielding a stable, porous product with minimal thermal degradation.
What's so special about freeze-dried food?
Imagine biting into a strawberry that tastes just-picked after years on your shelf—that's freeze-drying! By removing water in a frozen state, it:
-Saves Nutrients & Flavor (no heat damage).
-Keeps Its Shape (no shriveling like sun-dried fruit).
-Stays Fresh for Decades (if sealed properly).
-Works Anytime – Add water to revive it, or snack crispy straight from the bag!
A sample plant of Vacuum freeze dryer with 330kgs
The whole systems of Vacuum freeze dryer with 330kgs includes:
✔ Main Processing Units
Drying chambers with integrated thermal systems
Alternative de-icing for maximum uptime
✔ Critical Subsystems
Vacuum systems (evacuation + maintenance)
Closed-loop ammonia refrigeration
✔ Operational Infrastructure
Industrial control center (CE-certified)
✔ Material Flow Components
Anodized-trays & trolleys
Corrosion-resistant rail system
Mode Model A series -Vacuum freeze dryer with 330kgs
| Specification of Vacuum freeze dryer with 330kgs | |
| Model | A25 |
| Loading capacity | 330kgs |
| Nominal total loading areas | 25㎡ |
| Manner of heating | Radiant heating from two sides of the heating plate |
| Dimensions of single tray | L 687 * W 568 * H 30~40 or L 720 * W 568 * H 30~40mm |
| Heating temperature ranges | From room temperature to 130℃ |
| Nominal working pressure ranges | 30~120Pa |
| Max.capacity of vapor condenser | 57.5 kg/h |
| Evacuation time to reach within 133Pa | 15~20 min. |
| Steam consumption at peak steam pressure of 0.7Mpa | 70kg/h |
| Requested pealing cooling capacity at -40℃ | 45kw |
| Total power consumption of the whole systems | 30kw |
Company profile
Preserving Nature’s Goodness, Powering Industry Growth
At Dalian Iceberg, we engineer Batch freeze dryer and IQF systems that bridge science and sustainability. By merging global innovations with localized service, we empower food processors to:
Batch freeze dryer ✔ Extend shelf life without additives
Batch freeze dryer ✔ Cut waste with precision freezing
Batch freeze dryer ✔ Scale efficiently with modular designs
Join us in shaping the future of food preservation.
Delivery for Batch freeze dryer
FAQ
How long is the production time of the batch freeze dryer?
It is 120-150 days in Europe and the United States, and 90-120 days in other regions.
Retains nutrients: Freeze-dried food retains up to 97% of its nutrients, including vitamins, minerals, and antioxidants. Long shelf life: Freeze-drying removes the potential for bacterial growth, so freeze-dried food can last for years. Maintains flavor and texture: Freeze-drying preserves the original shape, flavor, and texture of food. Sustainable: Freeze-drying reduces food waste and transportation and storage costs.
Freeze drying works by first freezing a substance, then lowering the pressure around it to a vacuum, which allows the frozen water to directly transition from a solid (ice) to a gas (water vapor) through a process called sublimation, effectively removing the water content without going through a liquid phase, thus preserving the material's structure and properties; this is often used to preserve food, pharmaceuticals, and biological samples by significantly extending their shelf life.
We Dalian Iceberg produce and supply freeze drying equipment with the below types and sizes: 1)Type: Industrial scale of freeze dryers with internal assembly of vapor trap(s) with separate condensers performing the functions of alternative vapour trapping and de-icing Sizes: A50, A75, A100, A125 and A200 2)Type: Pilot Freeze-dryers with one-time condenser Size: A5, A10, A20, A30 We can also develop other model of pilot freeze-dryers according to customer’s demands
It is 120-150 days in Europe and the United States, and 90-120 days in other regions.
Within 24 hours
The following 14 items of supplies are included in the contract price offer: 1) Drying chambers (with already integrated internal packages of the heating plates and the condensers) 2). Hot water system 3). Vacuum system with units for initial evacuation and vacuum maintaining 4). Ammonia circulation system 5). Alternative de-icing system 6). Pneumatic system 7). Cooling system (cooling tower) 8). Control centre with control panels and computer 9). Freezing tunnels 10). Rail system 11). Trolleys 12). Trays 13). Connecting pipes, pipe fittings and valves for systems 14). Cables, wires, shielded control lines, etc. for all systems We can also add other equipment according to customer's request.
