Special services are available:

Storage Room for Products

20 °C 10 m²
- 20 °C 10 m²
- 50 °C 8 m²

Conditioning and Pretreatments

Mixing station for liquids and solids
Foaming – prefreezing unit
Milling unit for frozen product
Sieving unit for frozen and milled product

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)

Product Laboratory

Sieve analysis
Water content measurement
Sensoric evaluation

e&e vacuum drying center

e&e Vacuum Drying Technology Center
Continuous Freeze and Vacuum Drying

Within our drying technology center, 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 center

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

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.

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 center.
Please contact us if you wish to receive more information.

Successfull drying of different products, such as: