Dense phase pneumatic conveying:

advantages over traditional systems

Dense phase pneumatic conveying differs for the low speed efficient ratio between the material conveyed and the required air. Indicative relation between air (or others gaseous fluids) and product:

  Dense phase about 30 l of gas of transport per 1 kg product.
Other systems about 1000 l of gas of transport per 1 kg product.
Furthermore, the low amount of gas used does not disperse the volatile substance and preserves any aroma and the use of inert gas prevents the products oxidation.
Using nitrogen for the transport allows use in areas classified ATEX.
In dense phase pneumatic conveying the use of low volumes of air allows for considerable energy savings.
Maintenance costs are contained. The number of spare parts and technical assistance is reduced.
  • Integrity of the material 
  • Low velocity
  • Flexibility
  • Energy savings
  • Reduced maintenance costs
Is it true that the cost of dense phase plants is higher than diluted phase systems?
The initial cost for the implementation of a diluted phase system (blower and rotary valve) is lower than the one for a dense phase pneumatic conveying system. A whole diluted phase plant management involves the use of larger diameter and dimension pipes and filters. It also means frequent pipe deterioration and recurring maintenance to the rotary valve.

Is the dense phase transport suitable for abrasive materials?
Our technology ensures high performance in the transport of delicate and abrasive materials, such as glass, sand, and corundum. The low speed combined with a reduced amount of compressed air or other gaseous fluid, avoids wear on the pipes and preserves the integrity of the product.
Is it true that the dense phase pneumatic conveying system can only work in discontinuous or batch form?
Apart from the discontinuous form, our technology enables the transport also in full pipeline form and full pipeline continuous (characterized by two vessels connected between them to ensure a continuous flow of material). Depending on the needs and on the product for transportation, customers can choose between the different methods.

What distances can cover a dense phase pneumatic conveying system?
Our solutions are suitable for both long and short transport routes. The use of a booster to control the compressed air or other inert gas makes it possible to transport dust and granules for distances over 500 metres including vertical straight lines until 100 metres (depending on the conveyed material). Boosters reduce considerably the friction during transport and, as a consequence, the material flows smoothly towards long distance destinations or along complex routes.
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