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Rules of Thumb For Pneumatic Conveying Pipelines

By Amrit Agarwal, Pneumatic Conveying Consultants |

Quite often, during the design of conveying systems, not enough attention is paid to the design of the conveying pipeline and its components. This disregard often leads to some major conveying system problems such as low conveying rates, conveying line plugging, excessive wear and tear in the conveying line, high conveying system pressure drop, product breakage, fines and streamer generation and product cross-contamination. Guidelines presented in this article help mitigate or avoid such problems.   General considerations Materials of construction. For the pipe itself, use carbon steel if contamination is not an issue. Otherwise, use aluminum or stainless steel. Use stainless steel for food and pharmaceutical applications. For special applications such as abrasive solids, high temperatures, and so on, it is necessary to find a suitable material for the conveying line and its components. Pressure rating. Pressure rating of the conveying pipeline should be suitable for the maximum conveying pressure of the conveying system. For most applications with a Roots type blower, a pressure rating of 30 psig is satisfactory. This rating corresponds to the rating of a Schedule 10 pipe. Use thicker pipes, such as Schedule 20, 30 or 40 for…
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