Re: Small Pneumatic Conveying Design
Dear Fabrice Dessenoix,
I calculate for your installation a pressure drop of approx. 0.16 barg.
If the air flow is reduced to 0.021 m3/sec, then the pressure drop reduces to 0.1 bar.
Both pressure drops at 1.5 tons/hr.
With a loading ratio of approx. 17, the pressure drop for product losses is only 1.6 %, due to the short conveying line.
The most of the pressure drop is due to gas resistance and acceleration.
Have a nice day ■
Teus
Small Pneumatic Conveying Design
Dear all,
I am working on the design of a relatively small pneumatic conveying system. Here are my data :
Particule flow rate : 1.5 t/h
Particule mean size : 10 µm
Particule density : 7000 kg/m3
Bulk density : 4000 kg/m3
Bore diameter : 50 mm
Horizontal length 20 m
Vertical length : 4 m
4x90° bends
From calculation, I found a minimal air velocity of 18 m/s which gives me a N2 flow rate of 128 m3/h. I, then, calculate the pressure drope as mentionned here (http://web.archive.org/web/201101010...4Q/rhoe-04.htm) and found a pressure drop of 3 bar (mostly due to the solid to wall friction). But from the design guide of David Mills, I see that the pressure drop should not be as high as this (max 0.6bar). So I am wondering which one is right.
Could you give me some elements to know which one I should believe...?
Thank you for your help.
Fabrice Dessenoix ■