Dense Phase Pneumatic Conveying Systems

Dense phase pneumatic conveying systems are a method used for conveying fragile, abrasive, temperature and humidity-sensitive, powder and granular materials over long distances.

In this system, the material is conveyed by pressurizing it with compressor air in a pressure vessel called a pneumatic sender. Since the pneumatic sender is completely sealed, dusting and product loss do not occur during pneumatic conveying. In dense phase pneumatic conveying systems, the material is conveyed in a block form inside a closed pipeline. During the process, the pressure in the conveying line is high, and the flow rate is low.

Low flow rate helps prevent the structural breakdown of sensitive surface materials until they reach the destination. Abrasive materials, on the other hand, will cause erosion in the conveying lines over a longer period compared to dilute phase pneumatic conveying systems.

High pressure enables the conveyance of materials over longer distances. In processes where the distance between the pneumatic sender and the conveying target is long, the use of high-pressure conveying air offers an advantage.

Since the compressed air used for conveyance can be conditioned, dense phase pneumatic conveying systems are more suitable for processes with specific temperature, humidity, oil, and particle requirements. Especially in hygienically critical processes, conditioning the blower air used in dilute phase pneumatic conveying systems is much more difficult and costly.

Advantages of Dense Phase Pneumatic Conveying Systems :

  • Protection of fragile (surface-sensitive) material structures,

  • Reduced maintenance needs for transferring abrasive materials,

  • The ability to convey materials over longer distances with the advantage of high pressure,

  • Lower operating costs with the requirement of low flow compressed air,

  • Smaller filter requirements due to low flow compressed air,

  • Fewer moving auxiliary equipment and lower maintenance costs,

  • Reduced losses and leakage due to fewer moving auxiliary equipment,

  • Suitability for transferring many processes and materials with conditioned compressed air.
Dense Phase Pneumatic Conveying Systems.