How our dilute phase pneumatic conveying works

In a dilute phase design, the conveyed material is metered into the conveying line at a controlled rate. The gas velocity in the conveying line must be sufficient enough to entrain the particle above the saltation velocity. Dilute phase can have either positive or negative pressure differential.

There are two main types of dilute phase pneumatic conveying: pressure conveying and vacuum conveying.

Pressure Conveying

Dilute phase pressure conveying is one of the most common conveying methods for powders or granules. It’s most often used with non-abrasive, non-fragile materials that have a light bulk density. Common examples are flour, sugar, cornstarch, plastic granules, sodium bicarbonate, hydrated lime, activated carbon, and zinc oxide.

Vacuum Conveying

Dilute phase vacuum conveying is suitable for conveying materials that tend to pack or compress under pressure (such as wood shavings and certain fibrous materials) and for toxic materials that cannot leak into the workplace air.


Nol-Tec's dilute phase pneumatic conveying - the difference

  • Nol-Tec has the experience in the industry and engineering expertise to custom design the best system for you. You benefit from a product that has high life expectancy of components, with little maintenance.
  • We pay attention to the minor details of your project and materials and design a system focused on enhanced performance and extended life.
  • We have complete testing capabilities for dilute phase.
  • Our systems rely on simple design, which allows for flexible routing and easy operation.
  • We provide ongoing support throughout the lifecycle of your system.

For more detailed information about dilute phase pneumatic conveying, you can download product literature below.


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