Pneumatic Conveying: Movement of dry materials with air

Pneumatic solid transportation systems are currently considered one of the most effective means for product transportation due to their safety, hygiene, precision, and reliability. Pneumatic conveying is the solution to numerous challenges posed by product movement.

Adaptable to any capacity and length requirement, this technology significantly simplifies the transfer of products between production sectors. With extensive experience in the application of this system, Prillwitz specializes in pneumatic conveyor application for a wide variety of products, employing specific techniques for each.

Diagram with Options for Negative Pressure Pneumatic Conveying

Diagram with Options for Positive Pressure Pneumatic Conveying

Components Involved in Pneumatic Conveying Systems

06- Intake Rotary Valve

07- Product Viewer

08- Air Filter

09- Damper Box

10- Level Sensor

11- Storage Bin

12- Discharge Valve

13- Inlet Shoe

14- Sterilizer

15- Inline Sieve

01- Three-lobe rotary blower

02- Regenerative Turbine

03- Centrifugal Fan

04- Rotary Valve

05- Venturi

06- Intake Rotary Valve

07- Product Viewer

08- Air Filter

09- Damper Box

10- Level Sensor

11- Storage Bin

12- Discharge Valve

13- Inlet Shoe

14- Sterilizer

15- Inline Sieve

What are the possible machines to generate air for pneumatic conveying?

To generate the air required for conveying, a regenerative turbine, a rotary lobe blower, or high-pressure fans can be used.

Regenerative turbine Blower

Regenerative turbine Blowers or side channel blowers are reliable and efficient equipment used for different applications, mainly for pneumatic transport, with flow rates up

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What are the necessary accessories to form a pneumatic conveying system?

Among our accessories for pneumatic conveyors, the HSP rotary valves, HSD extraction rotary valves, and HSG rotary valves, stand out, ensuring the loading and unloading of products into the pipeline with absolute tightness. The VTN and VTNGa valves allow diverting pneumatic transport lines to different discharge points.

Air-to-Air Cooler for Pneumatic Conveying

Enfriador aire aire para transporte neumático

In the case of using a compressor as the air generator for transportation, there is a significant rise in temperature. Therefore, for some sensitive products, it is advisable to interpose an air-to-air cooler. Examples of this need may include the transportation of sugar or certain plastics.

Frequently Asked Questions

What is pneumatic conveying system?

A pneumatic conveying system is a way of moving a bulk dry powder or granular product by mixing it with a gas, typically air, which carries it through a pipeline.

What is dilute phase pneumatic conveying?

In dilute phase pneumatic conveying, particles slide through ducts at high speed with a large amount of air at low pressure. It can be either pressure or vacuum driven.

What is vacuum pneumatic conveying?

Vacuum pneumatic conveying, or suction conveying, is an efficient way to move solids in grain or powder form, which are fluidized by the air generated by the vacuum pump. They then flow freely through the pipes to their destination.

Where is pneumatic conveying of solids used?

It is used across industries for the movement of powders and granules. It has several key advantages over mechanical conveying systems such as screw conveyors or bucket elevators.

1-It allows for transportation routes of highly variable geometry, without the limitations of the mentioned systems, which generally only allow for horizontal and vertical transport.

2-It leaves the installation much cleaner of residue from the transported product, upon completion.

3- It takes up less space and is cleaner for the surrounding environment, as it is a closed system.

Benefits of dilute phase pneumatic conveying:

The advantages of dilute phase pneumatic conveying include flexibility for transfer in limited or small spaces, dust suppression in the environment, and easy maintenance.

Advantages of vacuum pneumatic conveying:

Among the advantages of vacuum conveying are dust suppression and leak containment. It can also be applied in explosive atmospheres, with secure and graceful receivers, adapting the system to customized demands.


With their experience in implementing pneumatic and mechanical conveying systems, Prillwitz has the necessary technical knowledge to adapt different machinery to the particular characteristics of the product being handled.

Raw materials that we have moved with pneumatic conveying:

Grains and seeds

  • Wheat
  • Maize
  • Oats
  • Coffee
  • Cocoa
  • Rye
  • Beat
  • Rice
  • Girassol
  • Chickpeas
  • Soybeans
  • Peanuts
  • Peanuts
  • Spices


  • Balanced feed
  • Pellets or feeds
  • Crystalline sugar
  • Impalpable sugar
  • Cocoa
  • Coffee
  • Coriander
  • Curcuma
  • Gelatin
  • Bone meal
  • Fish flour
  • Milk powder
  • Dried beans
  • Bread crumbs
  • Batter

Chemicals and Minerals

  • Aluminum powder
  • Atrazine
  • Bentonite
  • Borax powder
  • Lime
  • Caolin
  • Activated carbon
  • Calcium carbonate
  • Cement
  • Shell
  • Quartz
  • Titanium Dioxide
  • Dolomite
  • Fertilizers
  • Monoammonium Phosphate
  • Diammonium Phosphate
  • Tricalcium Phosphate
  • Mica
  • Refractory Materials
  • Sodium naphthalenesulfonate
  • Pigments
  • Soaps
  • Salt
  • Precipitated silica
  • Caustic soda
  • Magnesium sulfate
  • Zinc sulfate
  • Tanine
  • Diatomaceous Earth
  • Dyes
  • Gypsum
  • Lithium

Grain milling

  • Afrecho and afrechillo
  • Wheat semolina and semolina
  • Semolina
  • Rebasillo
  • Zootechnical flour
  • Maize semolina
  • Semolina
  • Polenta
  • Wheat flour, corn flour, soy flour, etc.
  • Germ
  • Starch
  • Hull

Plastics and petrochemicals

  • Polycarbonate
  • Vinyl polyvinyl chloride or PVC
  • Polystyrene or PET
  • Polyethylene
  • Polypropylene
  • Expanded polystyrene (Styrofoam)


  • Sawdust
  • Wood
  • Cork
  • Soap poder
  • Pigments

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