Cyclone separators

The Problem

A company manufacturing PVC granules moves the product using pneumatic transport systems terminating in a cyclone separator. The arrangement is typical of the transport systems commonly found in industry. Within each cyclone, the air exhausts through a perforated steel tube. This acts as a sieve, avoiding the small plastic wastage that would otherwise occur. The cyclones were producing a very shrill, penetrating whistle (at 497 Hz). This dominated the entire production area. As well as being extremely annoying, the whistle produced a sound pressure level of 110dB.

The Solution

The Results

The overall noise fell by 25dB.

Cyclone separators noise reduction graph

Cyclone separators noise reduction graph

The Costs

Each steel plate cost less than £1.

Information supplied by

Industrial Noise and Vibration Centre Ltd.

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Updated 2021-02-10