Successfull drying of different products, such as:
- Instant products
- Instant coffee
- Malt-based food drinks
- Pharmaceutical products
- Herbal extracts
- Enzymes
- Bakery products
- Hydrolysed vegetable products
- Fruit juice concentrates
- Meat extracts
Special services are available:
Storage Room for Products
- 20 °C 10 m²
- - 20 °C 10 m²
- - 50 °C 8 m²
Product storage -50 °C, 8 m², within the e&e drying technology centre
Conditioning and Pretreatments
- Mixing station for liquids and solids
- Foaming – prefreezing unit
- Milling unit for frozen product
- Sieving unit for frozen and milled product
e&e drying technology centre
Dryer Unit
- Flexible set-up for freeze or vacuum drying
- Feeding system for liquid, solid and frozen products
- Discharge system for granulates or cakes
- Condensers down to -50 °C
- Vacuum units down to 0,1 mbar
- Heating and cooling zones (4 – 8)
e&e product laboratory within the e&e drying technology centre
Product Laboratory
- Sieve analysis
- Water content measurement
- Sensoric evaluation
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e&e Vacuum Drying Technology Centre
Continuous Freeze and Vacuum Drying
Within our drying technology centre, the brand new e&e Pilot Vacuum Belt Dryer has been realized for examining and developing the drying properties of food, concentrates and extracts.
Overall view of the e&e drying technology centre
Advantages:
- Controlled drying conditions
- Short drying times
- Product handling without using trays
- Tailoring of drying properties
- Scale-up of drying results for commercial plants
- Product development in reasonable scale
e&e dryer with 2 drying belts
The dryer is equipped with two drying belts; 2 m2 drying surface in total.
The dryer has been designed as a continuous vacuum dryer. During the sluicing
procedure, the drying process can continue.
Via two big sight glasses, the drying process can be exactly observed
for tailoring the drying properties. The special arrangement of the heating
plates allows varying the drying plate temperature of each heating zone.
Technical data and drying options are given in table 1.
Table 1: Drying Options for the New e&e Pilot Vacuum Belt Dryer
| Type | Vacuum Drying | Vacuum Drying | Lyophilisation |
|---|---|---|---|
| Drying Temperature | 40 °C – 70 °C | 10 °C – 40 °C | -2 °C – 40 °C |
| Pretreatment of Products |
Extraction Evaporation |
Extraction Evaporation Sterilisation |
Extraction Evaporation Foaming and prefreezing unit Freezing of instant Products Milling of Instant Products |
| Water Evaporation* | 0,9 – 2,5 kg/m2 h | 0,9 – 2,5 kg/m2 h | 0,9 –2,0 kg/m2 h |
| Drying Pressure | 70 – 300 mbar | 10 – 100 mbar | 0,1 – 6 mbar |
| Vacuum Devices | Condenser and Water Ring Pump |
Condenser and Water Ring Pump with Gas Injector |
Ice Condenser and Dry Compressing Vacuum Pump with FC control |
| Dry Product Handling | Discharging, Packaging in Bags |
Discharging, Packaging in Bags |
Discharging, Packaging in Bags |
*depending on the product properties
The parameters such as product feed, swivel, nozzle or vacuum sluice, belt width and
product temperature are available. For freeze drying, temperatures of -50 °C are available.
Depending on the task, the generating of vacuum happens via water ring vacuum pumps
or dry compressing vacuum pumps.
Moreover, e&e offers the possibility of characterising and developing drying product properties
(according to table 2). For carrying out drying test runs we offer the possibility of
measuring important material properties, such as:
Water content, adsorption and desorption diagram, relative humidity of product and glass
transition temperatures. These are key data for characterising the product properties and for
evaluating the best drying conditions.
e&e drying technology centre – product discharge
Table 2: Overview of Products and e&e Drying Principles
Drying Principles
| Products | Freeze drying | Vacuum drying |
|---|---|---|
| Spices | X |
X |
| Fruits | X |
X |
| Vegetables | X |
X |
| Food Complements | X |
X |
| Pharmaceutical Extracts | X |
X |
| Instant Coffee | X |
- |
| Other Products | X |
X |
For carrying out drying test runs, a minimum product quantity of 30 kg will be required.
We would appreciate welcoming you in our specialized drying technology centre.
Please contact us if you wish to receive more information.