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STELA Laxhuber GmbH
Φttingerstr. 2
D-84323 Massing
Tel.: +49 (0)8724/899-0
Fax: +49 (0)8724/899-80
E-Mail: sales@stela.de
www.stela.de

 

 

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  stationary driers  
 

proven technology, creative solutions, flexible production!
 

 

 
 





example of a stationary drying plant
 

 
Small or quite high capacities; with or without dust separation, continuous-mixed-flow or circulating batch driers; gas, oil, steam or special heating – STELA is the right partner for everything!


Advantages at first sight:

• use of highest-quality materials
• drier made of special aluminium
• long operating life
• no upper limit of capacity
• optimum energy saving by means of  
  circulating air and heat recovery
• sophisticated air duct sytem, highest
  possible air saturation
• high efficiency
• flexible modular design
• dust separation according to the
  latest state of the art
• powerful fan and air heater technology
  from our own production
• optimum utilization through
  continuous operation
• constant product moisture by modern
  discharge technology
• electrical and control engineering, from
  our own company according to the latest
  state of electrotechnical regulations
• simple and safe operation by PLC
• suitable for installation inside and outside
• one and multiple column driers, auf
  with split mode of operation on request
• exclusively with STELA also mobile and
  displaceable

 

STELA is your specialist in maize drying

 

                                     Unlimited capacities depending on the size!
 
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drying principle


The product to be dried runs through the drier from top to bottom due to gravity. Horizontally arranged hot air and exhaust air ducts run through vertical product ducts. The optimally designed shape of the roof of these ducts guarantees the constant flow of the product.


 

 

The roof ducts are open downwards at full length. The hot air streams into the column at the front side of the hot air roofs and flows through the product closely piled up. The product warms up, gives its water off into the passing air and dries. As a countermove, the air cools down and the air humidity gets up to the saturation limit, depending on the product. The humid air escapes through the neighbouring exhaust air roofs. This air is extracted from the drier by the exhaust air fan.
The constructive design of the roof ducts guarantees a constant product moisture and a maximum protection of the product.

 
 
 

Constructive design


For the design of the drying plant, there are numerous variants, which are assembled individually. According to your wishes, you will receive an optimal design for your application with the suitable components.  

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Design with centro separator

The free flowing product is fed into the store tank (1), runs due to gravity through the drying (2) and cooling elements (3) until it is discharged in batches by the discharge device (4) into the discharge hopper (5). Burner (6) and air heater (7) – direct or indirect heating are optionally possible - heat up fresh air. The exhaust air of the cooling elements is mixed with this air. Thus the whole heat stored in the product is led back to the drying process (energy saving by heat recovery). The large-scale hot (8) and exhaust air caps (9) guarantee an optimum air and heat distribution in the drier column.

The hot air flows through the product pile, absorbes moisture and is sucked off from the exhaust air cap by the exhaust fan(10).
The dust-laden exhaust air is cleaned in the centro separator (11) and carried off into the open air. The separated dust gets through pipes to the dust bin or to a bagging device.
 

 
 
 




 

 
Design with circulating air

Not only the exhaust air from the cooling zone, but also the exhaust air (and so the contained energy) from the lower drier elements is recovered by means of a circulating air fan (10). A pneumatic discharge slide (4) brings about short discharge cycles. By means of pneumatic air flaps, which are installed blow-out-sided at the fans (10), the air flow is interrupted during this short discharge cycle. The share of the total air volume that can be recovered as so-called circulating air depends on the initial moisture of the product which is expected on an average and on the parameters of the ambient air. So the plants are calculated and designed depending on the site – e. g. Central Europe, Southern Europe or the Tropics.
A drier in Central Germany, which is designed mainly for maize drying with an average initial moisture of 35 %, requires another air distribution than e. g. a drier in Southern Hungary, where average initial moistures of 22 % are expected.
 
 
 

Stationary driers reference objects