Industrial Dehydrator Freeze Drying Equipment Vacuum Low
Temperature Dryer
Product Application:
Freeze drying, also known as lyophilization or cryodesiccation, is
a low temperature dehydration process that involves freezing the
product and lowering pressure, removing the ice by sublimation.
The vacuum dryer is composed of a refrigeration system, a vacuum
system, a heating system, and an electrical instrument control
system. The main components are drying box, water trap (cold trap),
refrigeration unit, vacuum pump, heating/cooling device, etc.
The difference between vacuum drying and freeze drying:
Vacuum drying mainly for raw products that not very heat sensitive.
Freeze drying mainly for areas where nutrition is need to preserve.
Brief description of freeze-drying process:
(1) Pretreatment process
For different materials to be dried, the pretreatment methods are
different. According to the characteristics of raw materials,
corresponding processing methods are adopted, such as pre-treatment
of vegetable freeze-drying, in addition to sorting, cleaning and
cutting of raw materials, blanching is also required. The blanched
vegetables need to be cooled quickly, and after cooling and
draining, they can be plated. For the pre-treatment of fruits, the
main purpose is to protect the color, and the processing techniques
are different.
(2) Pre-freezing process
There are two methods of pre-freezing: vacuuming, self-evaporative
freezing and freezing with quick-freezing equipment. According to
the nature of the material, select the pre-freezing rate. The
pre-freezing process directly affects the quality of materials.
(3) Sublimation drying
Sublimation drying is carried out in a vacuum device, so it is very
important to maintain a suitable vacuum during the sublimation
drying process.
(4) Post-treatment process
Vacuum freeze-dried food is generally porous and loose, with a
large surface area, easy to absorb moisture.
Advantages of Vacuum Freeze Drying Machine:
Freeze-drying causes less damage to the substance than other
dehydration methods using higher temperatures. Nutrient factors
that are sensitive to heat are lost less in the process as compared
to the processes incorporating heat treatment for drying purposes.
Freeze-drying does not usually cause shrinkage or toughening of the
material being dried. In addition, flavours, smells, and
nutritional content generally remain unchanged, making the process
popular for preserving food.
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 pharmaceutical uses. Freeze-drying can also be used to
increase the shelf life of some pharmaceuticals for many years.
Technical Specifications:
| Model | NT-F5M | NT-F10M | NT-F20M | NT-F30M |
| Control Type | PLC+ human-computer interface | PLC+ human-computer interface | PLC+ human-computer interface | PLC+ human-computer interface |
| Working | Quick freezing | Quick freezing | Quick freezing | Quick freezing |
| Material | 304 Stainless steel | 304 Stainless steel | 304 Stainless steel | 304 Stainless steel |
| Drying area (m²) | 5 | 10 | 20 | 30 |
| Loading capacity(kg) | 50 | 100 | 200 | 300 |
| External dimensions(m) | 3.8x1.2x1.9 | 5.8x1.7x2 | 7x1.7x2 | 9x1.7x2 |
| Tray quantity | 16 | 24 | 48 | 72 |
| Shelf temperature(℃) | -55~120 | -55~120 | -55~120 | -55~120 |
| Shelf medium | Low temperature silicone oil | Low temperature silicone oil | Low temperature silicone oil | Low temperature silicone oil |
| Prefreeze temperature(℃) | -30~-60 | -30~-60 | -30~-60 | -30~-60 |
| Cold trap temperature(℃) | -50~-80 | -50~-80 | -50~-80 | -50~-80 |
| Vacuum pump | Rotary vane pump | Rotary vane pump | Combined pump set | Combined pump set |
| Working vacuum | ≤130Pa | ≤130Pa | ≤130Pa | ≤130Pa |
| Defrosting mode | Hot water spray | Hot water spray | Hot water spray | Hot water spray |
| Cooling Power(kw) | 9 | 18 | 25 | 34 |
| Heating Power(kw) | 6 | 12 | 24 | 36 |
| Total Power(kw) | 18 | 34 | 56 | 83 |
| Working Temperature | ≤40℃ | ≤40℃ | ≤40℃ | ≤40℃ |
Payment terms:
T/T, L/C, Western Union, MoneyGram or negotiable.
Packing and Shipping:
1. Plastic film as inner packaging
2. Formal export packaging or packaging according to customer
requirements
Choose the best shipping method according to the actual situation
or customer requirements
FAQ
Q: Can you supply OEM or ODM?
A: Of course we can supply it. We are manufacturer, we can
manufacture the equipments according to your exactly requirements.
Q: Can you help design the entire process line?
A: Of course, our experienced engineers and technicians can help
you arrange the layout and installation of the entire production
line according to the actual situation such as your workshop
layout.
Q: How long is your production cycle?
A: Usually 7-25 working days, the exactly delivery time is
depending on the quantity and your ordering time.
Q: How is the payment?
A: T/T, L/C or other formal import and export payment method.
Q: How long is your warranty period?
A: One year after commissioning is completed.
Q: How to install?
A: We can currently provide online guidance services by experienced
engineers. If you need on-site installation, we can apply to the
government for installation abroad and calculate all the cost to
customers.
Q: Will you help us if we have any problems in future production?
A: It is necessary, you can contact me through mobile phone,
WhatsApp, etc. We are always at your service. We will help resolve
your issue as soon as possible
