STAD - Pneumatic Transport Systems

Pneumatic transport consists in conveying dry powders and granular solids into pipes by means of a gas flow, usually air.
Based on the material to air ratio, they are classified as "dense”, "semi-dense" or "dilute” phase systems.
The suction or vacuum systems utilise the vacuum created in the pipe to transfer the material.
Pressurised systems, on the other hand, utilise a positive pressure to push the material along the pipe.
The many features of the pneumatic transport provide numerous industries with the possibility to convey products without dispersion of the material into the environment. Itineraries can be chosen so that obstacles are avoided with transport on several levels and between different structures.

DILUTE PHASE TRANSPORT

Dilute phase transport is characterised by a high transfer speed where the materials “float” in the air stream.
The pressure (or vacuum) is relatively low (compared to dense phase systems).

DENSE / SEMI-DENSE PHASE TRANSPORT

DENSE PHASE

Dense phase transport is commonly used when materials are abrasive or fragile.
Dense phase systems operate at a lower transfer speed, at higher pressures and with higher air to product ratios.
The higher pressure available permits a longer transport distance.

SEMI-DENSE PHASE

Semi-dense transport is a phase between dense and dilute.
The semi-dense phase systems operate at lower transfer speeds than dilute phase with medium pressures and specific air to product ratios.

SELECTION OF TRANSPORT TYPE