ppt sizing he, pellet, expander

7/27/2019 PPT Sizing HE, Pellet, Expander

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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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ppt sizing he, pellet, expander

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