FFD-20 Industrial Food Freeze Dryer — 500 kg/batch (Radiant Heating)
Industry Food Freeze Dryer
Large-scale industrial food freeze dryer with 50 m² of radiant-heated shelf area, processing about 500 kg of fresh material per batch. SUS304 mirror-polished chamber, screw-compressor refrigeration and Siemens PLC control preserve colour, nutrition, flavour and texture while extending shelf life.
Overview
The FFD-20 is a large-scale industrial food freeze dryer (lyophilizer) for continuous production. It removes moisture by freezing the product and subliming the ice directly to vapour under high vacuum, so colour, nutrition, flavour, shape and texture are preserved and shelf life is greatly extended — without preservatives. With 50 m² of usable shelf area it processes about 500 kg of fresh material per batch.
Highlights
- 304 stainless steel chamber, mirror-polished interior (Ra ≤ 0.4 µm) for hygienic, easy cleaning.
- Radiant heating with circulating thermal-oil plates — uniform, gentle heat for even drying.
- Integrated chamber + condenser with observation window and interior lighting.
- Siemens PLC control with touchscreen, auto / manual modes, recipe storage and remote operation.
- Efficient refrigeration and water-capture for fast pull-down and high throughput.
Key Specifications
| Batch capacity (fresh material) | 500 kg |
| Drying / shelf area | 50 m² |
| Ice-condenser capacity (per batch) | 600 kg |
| Number of shelves | 16 + 1 radiant |
| Shelf (tray) size | 2500 × 1250 mm |
| Shelf temperature range | −45 °C ~ +70 °C |
| Ultimate vacuum | ≤ 10 Pa |
| Heating | Circulating thermal oil, radiant |
| Refrigeration | Screw compressor, R404A / R507 (Bitzer / Frascold) |
| Vacuum pump | Roots + rotary-vane set |
| Control | Siemens PLC + touchscreen, auto / manual, remote |
| Material / finish | SUS304, mirror-polished Ra ≤ 0.4 µm |
| Total power (approx.) | 90 kW |
| Overall L×W×H (approx.) | 7000 × 2500 × 3000 mm |
| Weight (approx.) | 9000 kg |
FFD Series — Full Range
| Model | FFD-20 | FFD-30 | FFD-50 | FFD-100 | FFD-200 | FFD-500 |
|---|---|---|---|---|---|---|
| Batch capacity (fresh) | 500 kg | 1000 kg | 1250 kg | 1500 kg | 2000 kg | 2400 kg |
| Drying / shelf area | 50 m² | 100 m² | 125 m² | 150 m² | 200 m² | 240 m² |
| Ice-condenser capacity | 600 kg | 1200 kg | 1500 kg | 1800 kg | 2400 kg | 2880 kg |
| Total power (approx.) | 90 kW | 150 kW | 180 kW | 210 kW | 270 kW | 320 kW |
| Weight (approx.) | 9000 kg | 14000 kg | 17000 kg | 20000 kg | 26000 kg | 30000 kg |
Radiant Heating System
Product trays sit between heating plates fed by circulating thermal oil. Heat transfers mainly by radiation — gentle and uniform across every shelf, avoiding hot spots and protecting delicate structures such as berries, flowers and probiotics. Plate temperature is adjustable from −45 °C to +70 °C, so the same machine can freeze product in place and then drive primary and secondary drying.
Construction & Main Components
Drying chamber: horizontal cylindrical chamber in SUS304 stainless steel with reinforcing ribs, mirror-polished inside, with observation window and lighting; silicone-rubber sealed doors give a reliable vacuum seal.
Shelf stack & trolleys: thermal-oil heated plates form the shelf stack; trays load onto the plates and large units use roll-in trolleys on internal tracks for fast loading.
Refrigeration & vacuum: a screw-compressor system (R404A / R507) chills the shelves and the ice condenser; a Roots + rotary-vane vacuum set pulls the chamber to ≤ 10 Pa for rapid sublimation.
Applications
- Fruits & vegetables: strawberries, berries, mango, corn, peas, mushroom, carrot.
- Pet food & treats: chicken breast, beef, duck, liver, fish, shrimp.
- Coffee & tea, seafood, candy & chocolate, probiotics, instant foods, herbs & nutraceuticals.
Why Freeze-Dried
- Retains biological activity and heat-sensitive nutrients.
- Keeps original colour, aroma, taste and shape; rehydrates quickly.
- ~95–99 % moisture removal, light weight and long ambient shelf life, no additives.
Customization & Support
Chamber size, shelf count, tray format, heating/refrigeration capacity and automation (auto-loading, CIP, nitrogen flushing) can be tailored to your product and plant. Installation, commissioning, training and spare parts available.
