Energy-Saving Pneumatic Conveying Pipe System

The cement industry is increasingly expected not only to produce high quality products competitively, but to do so utilizing less energy and reducing dedusting requirements. This paper will present current experiences for an efficient pneumatic pipe conveying system that consumes less energy and requires smaller dedusting equipment at the conveying pipe discharge. This system combines the advantages of an air-activated gravity conveyor plus those of a pneumatic transport pipe. The material characteristics that can be conveyed by this system will be presented and discussed using the Geldart diagram. System design guidelines relating to applicable types of feeding devices, horizontal runs, inclines, bends and vertical lifts will also be presented. The paper will conclude with results from several of these systems being presented with the aid of actual measured operating results.