Not every seed drying method is the same. Sometimes a more dynamic approach is required. With a drum dryer, seeds remain in continuous motion while drying to the desired moisture content. This ensures uniform drying and optimal seed quality.
Installations & Products
Drum drying
Dry carefully, continuously in motion
Drying of seed per drum individually is possible. The seed in a drum will automatically be dried to the desired equilibrium moisture content.
Per drum dryer setting of quantity-, temperature and Absolute Humidity (AH) of process air.
Working principle
USING DRIED AND COOLED AIR IN A CLOSED ENVIRONMENT PROVIDES OPTIMAL CONTROL & QUALITY
Slide inside for extracting outside or recycled air. Optional with dehumidified air. Outside air is warmed up to the desired temperature to absorb moisture.
Outside air and dehumidified air can be mixed to decrease AH and increase drying capacity. When air out of the drum is more damp than outside, it will be dispatched outside (middle).
When air from the drum is drier than outside, this is recirculated and mixed with dehumidified air (left).
Final moisture from the product will be drained by dehumidified air.
Valve for dispatching wet air to outside (middle) and valve to recirculate dry air (left).
In the back a valve to bring dehumidified air to mix with outside air or recirculated air when required.
ABC in use of drum dryer
A: Central airduct for outlet damp air
- When air from the drum is more damp than outside, this will be
dispatched.
B: central airduct for inlet outside air
- Starting with heated outside air a large quantity of water is drained.
- When required, dehumidified air will be added to a drum-unit to continue
optimal drying.
C: Central inlet for dehumidified air
- Dehumidified air will enter a drum dryer when drier air is required.
- When air out of the drum is drier than outside, this will be recirculated.
- Drying continues with dehydrated air.
1
Central airduct for outlet damp air
2
Central airduct for inlet outside air
3
Central inlet for dehumidified air
QUICKLY START DRYING YOUR SEED & PELLETS
Important when drying fruit seeds is that the seeds will not stick to each other. Therefore, it is wise to let the seeds move whilst drying. By doing this, you will prevent double seeds. A drum dryer is extremely suitable for this; either loose seeds or seeds in small bags will – because of the rotation of the drum dryer – keep moving whilst there is drying air blown along the seeds. The moving prevents that the seeds will stick to each other.
Example of a mobile drum dryer for two drums.
Each drum dryer has got an own fan so that there can be a desired amount of air set per drum.
The dryer can work either with or without heater.
The dryer is mobile and only requires a 230V or 400V connection.
Cross section of a drum dryer.
Seeds can be collected in drawers.
Drawers with fine stainless steel mesh for ventilation.
USING DRIED AND COOLED AIR IN A CLOSED ENVIRONMENT PROVIDES OPTIMAL CONTROL & QUALITY
On the left, the open drawer dryer. This can be placed in a conditioned room. Air from this room will get sucked through the seeds. In this way, the seeds will be dried optimally at the right temperature and moisture content.
On the right, the conditioned closed drawer dryer. The front is foreseen of a rolling shutter. The drawer dryer can be placed at any desired (working) place.
The drawers have got a dimension of 400x800mm or 400x400mm. Other dimensions are possible.
By opening the rolling shutter, the complete front will get opened and the drawers can be placed.
Normally, the conditioned drawer dryer has got 6 drawers.
When placing a drawer, the drawer will be automatically aerated.
Air is being sucked through the seeds per drawer. The air is blown to the conditioning unit at the top. There, the air will be dried and brought to the right temperature.
Summary
Drum drying for dynamic and uniform seed drying
Drum drying is an effective method for drying seeds that need to remain in motion during the drying process. The continuous rotation of the drum keeps the seeds moving, ensuring uniform drying and preventing seeds from sticking together. This makes drum drying particularly suitable for fruit seeds, small seed batches, or seeds in small bags.
Each drum dryer can be individually configured for airflow, temperature, and absolute humidity. This allows the drying process to be precisely adjusted to the type of product and the desired final moisture content. The seeds are automatically dried until their equilibrium moisture content is reached.
During the drying process, heated outside air, dehumidified air, and recirculated air can be used. By combining these airflow options, the system achieves efficient drying with optimal control over temperature and humidity.
The ABC software automatically controls the air supply, recirculation, and exhaust of humid air. This ensures that the most efficient drying conditions are maintained while preserving seed quality.
A drum drying system therefore provides a flexible and reliable solution for controlled seed drying where continuous movement of the product is essential.
Heated air
Sustainable drying with heated air
The air adapts during the drying process. The Agratechniek Drying Method uses three phases to achieve optimal drying and save energy.
Dried air
Optimal drying
The air adapts during the drying process. The Agratechniek Drying Method uses three phases to achieve optimal drying and save energy.
Drum drying is highly suited for drying of Grass seeds, Seeds, Vegetable & Fruit seeds
Example installations
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