The STB Dilute Phase Conveying Systems

1. Blowing Systems

STB Engineering Ltd
Toadsmoor Road
Brimscombe
Stroud
Gloucestershire
GL5 2UF
Tel. 01453 885353
Fax 01453 886824
sales@stbengineering.com

The simple positive pressure or ‘Blowing’ system is the most elementary of all the pneumatic conveying systems with the product being totally suspended in the air stream. These systems generally comprise a blower or fan delivering air into the pipeline, a feed device to entrain the product into the conveying air and a filter or air separator to remove the product from the air at the receiving hopper.

• Conveying pressures up to 1.0 barg.

• Low product/air ratio, generally up to 8:1.

• Conveying velocities 8 to 30 m/s.

• Complex systems conveying to multiple delivery points possible using diverter values.

• Closed loop conveying and low velocity conveying systems.

2. Vacuum Systems

Negative pressure or Vacuum transfer systems generally comprise similar equipment to the positive pressure system. Vacuum systems have an advantage that any system leakage is inward, so the escape of dust into the atmosphere is much reduced.

• Conveying pressures up to -0.5 barg.

• Low product/air ratio, generally up to 15:1

• Particularly suitable for conveying from multiple sources to a single point