Pneumatic Conveying

pneumatic conveying.xls PNEUMATIC CONVEYING (dilute ph Solids mass flow rate: 800 kg/h Mean particle size: 80 micron Density of gas: 1.2 kg/m^3 Density of solids: 2500 kg/m^3 Vertical distance: 30 m Horizontal distance: 15 m Number of 90' bends: 8 Gas viscosity: 0.0000184 Pa.s ******************************************** Solids mass flow rate: 0.2222222 kg/s Mean particle size: 0.00008 m ********* ********* ********* ********* ********* Pipe Saltation Superf'l Solid Solids Porosity diameter velocity gas vel. velocity flux (mm) (m/s) (m/s) (m/s) (kg/m^2s) (-) 78 9.53 14.30 11.61 46.51 0.9984 63 9.94 14.91 12.10 71.29 0.9976 50 10.40 15.60 12.67 113.18 0.9964 40 10.87 16.30 13.23 176.84 0.9947 Pipe Interst'l Slip Particle Drag Flow Gas diameter Gas velocity Re coeff't Reynolds friction velocity number number factor (mm) (m/s) (m/s) (-) (-) (-) 78 14.32 2.71 14.16 1.6326 72840.962 0.0048209 63 14.95 2.84 14.83 1.5833 61404.508 0.0050312 50 15.66 2.99 15.62 1.5299 51063.421 0.0052686 40 16.39 3.16 16.47 1.4776 42760.323 0.0055076 ********* HORIZONTALLY ********* Pipe Solid Pressure Pressure Pressure Pressure Total diameter friction loss by loss by loss by loss by Pressure factor gas ac'n sol ac'n gas fr'n sol fr'n drop (mm) (-) (Pa) (Pa) (Pa) (Pa) (Pa) 78 0.0313 123 270 455 6506 7355 63 0.0247 134 431 641 10168 11374 50 0.0192 147 717 927 16534 18325 40 0.0151 160 1170 1325 26558 29214

Upload
mohammed-eljamma
Category

Documents
view
17
download
7

Embed Size (px):

Transcript of Pneumatic Conveying

pneumatic conveying.xls PNEUMATIC CONVEYING (dilute phase)Solids mass flow rate: 800 kg/hMean particle size: 80 micronDensity of gas: 1.2 kg/m^3Density of solids: 2500 kg/m^3Vertical distance: 30 mHorizontal distance: 15 mNumber of 90' bends: 8Gas viscosity: 0.0000184 Pa.s********************************************Solids mass flow rate: 0.2222222 kg/sMean particle size: 0.00008 m********* ********* ********* ********* *********

Pipe Saltation Superf'l Solid Solids Porositydiameter velocity gas vel. velocity flux

(mm) (m/s) (m/s) (m/s) (kg/m^2s) (-)78 9.53 14.30 11.61 46.51 0.998463 9.94 14.91 12.10 71.29 0.997650 10.40 15.60 12.67 113.18 0.996440 10.87 16.30 13.23 176.84 0.9947

Pipe Interst'l Slip Particle Drag Flow Gasdiameter Gas velocity Re coeff't Reynolds friction

velocity number number factor(mm) (m/s) (m/s) (-) (-) (-)

78 14.32 2.71 14.16 1.6326 72840.962 0.004820963 14.95 2.84 14.83 1.5833 61404.508 0.005031250 15.66 2.99 15.62 1.5299 51063.421 0.005268640 16.39 3.16 16.47 1.4776 42760.323 0.0055076

********* HORIZONTALLY *********Pipe Solid Pressure Pressure Pressure Pressure Totaldiameter friction loss by loss by loss by loss by Pressure

factor gas ac'n sol ac'n gas fr'n sol fr'n drop(mm) (-) (Pa) (Pa) (Pa) (Pa) (Pa)

78 0.0313 123 270 455 6506 735563 0.0247 134 431 641 10168 1137450 0.0192 147 717 927 16534 1832540 0.0151 160 1170 1325 26558 29214

********* VERTICALLY ********* ** * BENDS * **Pipe Solids Gas Friction Total ** Pressure **

diameter static static losses pressure ** drop in **head head drop ** bends **

(mm) (Pa) (Pa) (Pa) (Pa) ** (Pa) **78 1179 353 1803 3335 ** 6670 **63 1733 352 2802 4888 ** 9776 **50 2630 352 4565 7546 ** 15092 **40 3932 351 7385 11669 ** 23337 **