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[Anil Panchal]

I am Anil Panchal, engineeirng student in SVNIT-Surat, India. I am having project on design of Pneumatic Conveying System. My duty is to convey Magnesium Sulphate Anhydrous at the rate of 1.5 tonne/hr. I have done calculations using book "Pneumatic Conveying Design Guide" by David Mills. Following data I have used. I want to know whether my calculations are right or wrong because my conveying temperature is 125 deg. C and particle diameter is 2 mm.


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Duty
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Horizontal conveying = 120 m

Vertical conveying = 12 m

Required material mass flow rate = 1.5 tonne/hr

Material = Magnesium sulphate (Anhydrous)

Particle density = 2660 kg/m^3

Particle size = 2 mm

No. of 90 deg Elbows = 2

D/d for elbows = 7

Temperature of air = 125 deg C



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Data Taken for Design:
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Allowable pressure drop = 0.2 bar

Minimum conveying air velocity, Cmin = 16 m/s


Conveying line inlet velocity, C1 = 1.2 x 16 = 19.2 m/s


5” schedule 40 pipe, ID = 128.20 mm


I have used “Pneumatic conveying design guide” by David Mills.



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Results obtained
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Air mass flow rate = 0.26 kg/sec

Material mass flow rate = 1.78 tonne/hr

Volumatric air flow rate = 0.212 m^3/s

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Please give suggestions.