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Pipeline blockage in pneumatic conveying systems

Don McGlinchey and Eddie McGee in the third of three papers discuss some of the reasons for pipeline blockage in pneumatic conveying systems

Pneumatic conveying systems are one of the most common and reliable means of in-plant transport of powders and granular products but also one who’s operation and causes of failure is often misunderstood. These systems can give rise to operational difficulties due to a wide range of factors which may be related to poor design, equipment failure, changes in product specification, wear, and even the weather! This article is restricted to describing a few possible causes for pipeline blockage on system start-up of a typical positive pressure dilute phase pneumatic conveying system. Many problems can be avoided by relatively simple measures or changes to operating procedures, (admittedly there are also many cases, particularly with dense phase systems, that require more experience to find a solution).

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