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Title: Particle Size Estimation from Pressure Drops of a Pneumatic Conveying Pipe Line
Authors: IINOYA, Koichi
GOTO, Keishi
Issue Date: 27-Oct-1964
Publisher: Faculty of Engineering, Kyoto University
Journal title: Memoirs of the Faculty of Engineering, Kyoto University
Volume: 26
Issue: 4
Start page: 328
End page: 335
Abstract: Size measurement of solid particles has been generally performed for a test sample. In such a conventional measurement, however, it is time-consumable and not easy to get test samples from a process line. A method of particle size estimation from pressure drops of a pneumatic conveying pipe line is herein discussed for the flow of Newton's region. According to the previous report'), pressure drops of a pneumatic conveying pipe line have been able to be calculated theoretically using empirical values of λs and vt, i.e. friction factor of solid flow through a pipe and mean settling velocity of solid particles respectively. In this paper, λs and vt are obtained from the relations between solid-gas mixture ratio and pressure drops of an accelerating and a constant velocity sections, where the accelerating section has to start at the position of ν=0 such as the feed point of solid particles. Then the mean particle size equivalent to a sphere is calculated from νt, and shows good agreement with experimental results.
URI: http://hdl.handle.net/2433/280607
Appears in Collections:Vol.26 Part 4

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