Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications!

Pneumatic Powder and Solid Transport Systems

Pneumatic transport systems used to move powder and other solid products.

Sponsored Links

Some common solids as flour, sugar, cement and many more, can be suspended and transported in air - referred to as pneumatic conveying. A pneumatic conveying system may transport solids up to approximately 50 mm in size. The powder or solid must be dry with no more than 20% moisture and not sticking.

In a pneumatic conveying system most of the energy is used for transport of the air itself. The energy efficiency of a pneumatic conveying plant is therefore relatively low, but this is often outweighed by easy handling and, in well designed systems, dust free solutions.

In general - the length of a pneumatic system should not extend 300 m for each pneumatic unit. Products can be conveyed over long distances by connecting systems in series.

There are three basic designs of pneumatic transport systems:

  • dilute phase conveying at high air velocity (20 - 30 m/s)
  • strand conveying at limited air velocity (15 - 20 m/s)
  • dense phase conveying at low air velocity (5 - 10 m/s)

Pneumatic systems can operate with both positive and negative pressure (vacuum). The working pressure should not extend 40 kN/m2.

Negative Pressure Pneumatic Conveying System

Pneumatic transport conveying - negative pressure system

Positive Pressure Pneumatic Conveying System

Pneumatic transport conveying - positive pressure system

Combination Pressure Pneumatic Conveying System

Pneumatic transport conveying - combination pressure system

Maximum temperature rise during the pneumatic compression is seldom more than 5oC which makes pneumatic transport systems suitable to sensitive products like medicines, food and similar.

Sponsored Links

Related Topics

  • Fluid Flow and Pressure Loss

    Pipe lines - fluid flow and pressure loss - water, sewer, steel pipes, pvc pipes, copper tubes and more.
  • Hydraulics and Pneumatics

    Hydraulic and pneumatic systems - fluids, forces, pumps and pistons.
  • Piping Systems

    Dimensions of pipes and tubes, materials and capacities, pressure drop calculations and charts, insulation and heat loss diagrams.

Related Documents

Sponsored Links


Search is the most efficient way to navigate the Engineering ToolBox.

Engineering ToolBox - SketchUp Extension - Online 3D modeling!

3D Engineering ToolBox Extension to SketchUp - add parametric components to your SketchUp model

Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with older versions of the amazing SketchUp Make and the newer "up to date" SketchUp Pro . Add the Engineering ToolBox extension to your SketchUp Make/Pro from the Extension Warehouse !

Translate this Page

Translate this page to Your Own Language .

About the Engineering ToolBox!

Privacy Policy

We don't collect information from our users. More about


This page can be cited as

  • The Engineering ToolBox (2003). Pneumatic Powder and Solid Transport Systems. [online] Available at: [Accessed Day Month Year].

Modify the access date according your visit.

3D Engineering ToolBox - draw and model technical applications! 2D Engineering ToolBox - create and share online diagram drawing templates! Engineering ToolBox Apps - mobile online and offline engineering applications!

Unit Converter


Sponsored Links