ppt sizing he, pellet, expander
TRANSCRIPT
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Block Flow Diagram Torrefaction Plant
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PROCESS FLOW DIAGRAM TORREFACTION PLANT
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Heat Exchanger
Spesification Shell and tube Heat Exchanger
Energy Required 71,74 hp
Tube side feed mass flow 2.46 tonne/h
Shell side feed mass flow 12.8 tonne/h
Tube inlet temperature 278.6 oC
Tube outlet temperature 350 oC
Shell inlet temperature 400 oC
Shell outlet temperature 389.6 oC
Tube inlet pressure 1.967 Atm
Fouling 0 oC.h.m2/kj
LMTD 73.22 oC
Overall U 43.54 kj/h.m2oC
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Shell and Tube Heat Exchanger
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Heat Exchanger
Construction Data Shell and tube Heat Exchanger
Baffle spacing 800 mm
Baffle type Single
Number of tube 160
Number of shell pass 1
Shell Diameter 739 mm
Tube passes 2
Tube thicness 2
Tube volume 0.1 m3
Tube ID 16 mm
Tube length 6 km
Tube OD 20 mm
Tube pitch 50 mm
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Specification Grinding
Equipment Name Grinder
Equipment Code
Function Reducing bauxite particle size to a
finer particle suitable for proceedingthe process
Number of Equipment 3
Equipment Type Marcy Rod Mill
Equipment Vendor Kennedy Van Saun Co
Operational DataCapacity (ton/hr) 9,7
Mill speed (rpm) 12.5
Minimum motor
(kWh)
160
Feed maximum size
(mm) 20
Output size range
(mm)
1.3
Construction Data
Rod charge (tons) 54.7
Size (m) 2.8 x 3.7
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Expander Data
Pressure in (P1) = 202.65 kPa
Temperature in (T1) = 280oC
Gas Flow rate (q) = 44274.04 m3/day (CO, CO2,H2O)
Pressure out (P2 or PD) = 104.4 kPa Delta P (P) = 2.68 kPa
T1 (Stage 2) = 278.6oC
Speed = 400 rpm
Stroke = 21.6 cm Normal Clearance = 0.07 (First stage) and 0.12
(Second Stage)
Assumption = 2 cylindrical per stage and all isdouble acting cylindrical
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Calculation Data Expander
Spesific Grafity = 1
Heat Capasity ratio = 1
Compresibility Factor = 1.01 (Plot to Curve ofcompresibility Factor)
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Compression Power per stage
Calculation Information Value
A Conversion factor 11.57
E Overall efficiency 0.9604
k Cp/Cv 1
q Gas flow rate 44274.04 m3/day
Ps Standard pressure 101.32 kPa
Ts Standard temperature 298 K
T1 Suction temperature 553 K
P2 146.54229 kPaP1 202.65 kPa
Zavg (z1+z2)/2 0.985
kW/stage -31314067
STAGE 1
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Compression Power per stage
STAGE 2 Calculation Information Value
A Conversion factor 11.57
E Overall efficiency 0.9604
k Cp/Cv 1
q Gas flow rate 44274.04 m3/day
Ps Standard pressure 101.32 kPa
Ts
Standard
temperature 298 K
T1 Suction temperature 551.6 K
P2 104.04 kPa
P1 143.8623 kPa
Zavg (Z1+Z2)/2 0.97
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Volumetric Efficiency
VariableValue
First Stage Second Stage
C 0.07 0.12
L 0.00723 0.0723
R 0.72313 0.72319
Zl 1.02 0.98
Zd 0.97 0.96
k 1.1605 1.1605
Evz 0.97623 0.99612
V1 14.5483 20.0406
Vd 14.9024 20.1187
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Diameter
VariableValue
First Stage Second Stage
Constanta 7.85E-07 7.85E-07
Stroke 21.6 21.60
rpm 400 400.00
Constanta 1.9 1.90
D2 (cm2) 1156.44 1561.21
D (cm) 34.01 39.51
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Energy for pelletizing
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ShreedingGrinding Pelletizing and cooling
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Pelletizing Station
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