Glass-fibre-reinforced plastic pellets place high demands on pneumatic conveying systems.
Conventional dilute-phase conveying causes angel hair, material abrasion and pipe wear due to high air velocities. The solution is provided by the PTA-type pneumatic dense-phase conveying system from the Gericke Group. Here, a pressure vessel serves as the feeding device, metering the product into the pipeline in a gas-tight manner. Small product plugs form inside the pipeline and are gently transported using compressed air at low velocities of less than 10 metres per second. Compared with dilute-phase conveying, the conveying velocity is significantly reduced, which minimises wear.
The pressure vessel ensures gas-tight feeding and also enables the conveying of abrasive or sensitive materials. The bulk material is pushed through the pipeline in compact plugs, which increases throughput and minimises the air consumption required. For conveying distances exceeding 100 metres, additional air injection points can be integrated to ensure process reliability and continuous material flow. Thanks to the low velocities and gentle conveying, additional wear protection for pipe bends is usually unnecessary.
Source: Gericke Group
