KRUPP INDUSTRIES INDIA LTD
DESIGN MANUAL
DEDUSTING
A Dedusting points 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38
Troughed belt conveyor Steel apron feeder Steel apron feeder, bulk material standing Deep bucket conveyor Box feeder Weigh belt Bucket elevator, chain - type Bucket elevator, belt - type, single casing Bucket elevator, belt - type, double casing Vibrating trough without flex seal, bulk material falling Vibrating trough without flex seal, bulk material standing Vibrating trough with flex seal, bulk material falling Vibrating trough with flex seal, bulk material standing Vibrating screen without flex seal Vibrating screen with flex seal Aeropol Poldos pressure vessel conveyor Fluidor Clinker silo feed, silo penthouse closed, 1 feed opening Clinker silo feed, silo penthouse closed, 2 feed opening Clinker silo feed, silo penthouse closed, 3 feed opening Clinker silo feed, silo penthouse open, 1 feed opening Clinker silo feed, silo penthouse open, 2 feed opening Clinker silo feed, silo penthouse open, 3 feed opening Clinker silo feed, cover trapezoidal plate, 1 feed opening Clinker silo feed, cover trapezoidal plate, 2 feed opening Clinker silo feed, cover trapezoidal plate, 3 feed opening Bin on top, 1 feed opening Bin on top, 2 feed opening Bin on top, pneumatic feed Polycom Feed hopper Crusher, moisture level < 6% Hammer crusher Vaccume relief Bulk loading, open Cement cooler Other machines / aggregates
surt:\techdata\dedusting\procedure.xls
Calculation Procedure SHEET 1 OF 24
KRUPP INDUSTRIES INDIA LTD
DESIGN MANUAL
DEDUSTING
SHEET 2 OF 24
B Types of dust a) Non - Wearing / Abrasive dust
1 2 3 4 5 6 7
Dust from lime stone Dust from clay Dust from marl Raw mix dust Coal dust Exit dust from raw material dryers Raw gypsum dust
b) Wearing / Abrasive dust
1 2 3 4 5 6
Calculation Procedure
Dust from iron ore Dust from slag Exit dust from kiln Cement kiln dust Clinker dust Cement dust
C Recommended air velocities in dedusting pipes a) Non - Abrasive dust
vmax. = max. air velocity = 19 m/s vmin = min. air velocity = 13 m/s b) Abrasive dust
vmax. = max. air velocity = 16 m/s vmin. = min. air velocity = 10 m/s D Recommended standard pipe (OD) sizes 139.7 219.1 273.0 323.9 355.6 406.4 457.2 558.8 609.6 711.2 813 914 1016 1067
surt:\techdata\dedusting\procedure.xls
1118 1219.0 1422 1626 1700 1800 1900 2000 2100 2200 2300 2400 2500
KRUPP INDUSTRIES INDIA LTD
DESIGN MANUAL
DEDUSTING
Calculation Procedure SHEET 3 OF 24
E Calculation for Pipe size and air velocity V = Volume i.e. volume of to be dedusted in m3/h 2 V = (pi/4) * (Di/1000) * vmax * 3600 where vmax = max velocity in m/s Di = pipe I D in mm. Di = 1000 * [(4 * V) / (3600 * pi * vmax)]
0.5
in mm
Select standard pipe size D from given table corresponding to Di Di
> >= >= >= >= >= >= >= >= >= >= >= >= >=
Calculated pipe I D 0.0 < 131.7 160.3 < 211.1 211.1 < 265.0 265.0 < 315.9 315.9 < 347.6 347.6 < 398.4 398.4 < 449.2 449.2 < 500 500 < 602 602 < 703 703 < 805 805 < 906 906 < 1007 1007 < 1059
D Selected pipe O D 139.7 219.1 273.0 323.9 355.6 406.4 457.2 558.8 609.6 711.2 813 914 1016 1067
Di
>= >= >= >= >= >= >= >= >= >= >= >= >=
Calculated pipe I D 1059 < 1110 1110 < 1211 1211 < 1414 1414 < 1618 1618 < 1692 1692 < 1792 1792 < 1892 1892 < 1992 1992 < 2092 2092 < 2192 2192 < 2292 2292 < 2392 2392 < 2492
Calculate air velocity v considering selected pipe dia. D v = 1000 * ((4 * V) / (3.6* pi * (D - 8)2) in m/s Calculated velocity should be >= vmin <= vmax 3 Example : Volume calculated V is 7561.51 m /h
Di = 1000 * [(4 * V) / (3600 * pi * vmax)]0.5 in mm = 375.173 D = 406.4 selected from the table v = 1000 * (4 * V / (3.6 * pi * (D - 8)2) in m/s = 16.8491
surt:\techdata\dedusting\procedure.xls
D Selected pipe O D 1118 1219.0 1422 1626 1700 1800 1900 2000 2100 2200 2300 2400 2500
KRUPP INDUSTRIES INDIA LTD
DESIGN MANUAL
DEDUSTING
Calculation Procedure SHEET 4 OF 24
E Calculation for air volume 1 Troughed belt conveyor Discharge point
Air volume Vd in m3/h 0.5 3 Vd = kt * kh * ( Belt width in mm) * ( (belt speed in m/s) / 1.7) * 3.6 in m /h Where kt = 1 if temperature <= 40 0C = 1.1 if temperature > 40 0C kh = 0.65 if height of slope <= 3 m = 1 if height of slope > 3 m Feed front point
Air volume Vff in m3/h Vff = ( Belt width in mm) *( (belt speed in m/s) / 1.7) 0.5 * 3.6 in m3/h Feed back point 3
Air volume Vfb in m /h Vfb = kb * 60 in m3/h kb = 12.2 if belt width is > 1000 mm = 8.5 if belt width is <= 1000 mm Belt width 2500 mm Height of slope 4m Belt speed 1.2 m/s Temperature 20 0C Vd =1*1 *( 2500) *( (1.2) / 1.7)0.5 * 3.6 in m3/h 3 = 7561.51 m /h Vff = ( 2500) * ( (1.2) / 1.7)0.5 * 3.6 in m3/h = 7561.51 m3/h Vfb = 12.2* 60 in m3/h = 732.00 m3/h
Example
2 Steel apron feeder Discharge point
Air volume Vd in m3/h Vd = 1.15 * kt * kh * ( width in mm) * 3.6 in m3/h Where kt = 1 if temperature <= 40 0C = 1.16 if temperature > 40 0C kh = 1 if height of slope <= 3 m = 1.1 if height of slope > 3 m
surt:\techdata\dedusting\procedure.xls
KRUPP INDUSTRIES INDIA LTD
DESIGN MANUAL
DEDUSTING
Calculation Procedure SHEET 5 OF 24
Feed point
Air volume Vf in m3/h Vf = kt * kh * ( width in mm) * 3.6 in m3/h Width 2500 mm Height of slope 6 mm Temperature 30 0C 3 Vd =1.15 * 1 * 1.1 * ( 2500) *3.6 in m /h = 11385 m3/h Vf =1*1.1 *( 2500) *3.6 in m3/h 3 = 9900 m /h
Example
3 Steel apron feeder, bulk material standing Feed point
Air volume Vf in m3/h Vd = 1.25 * kt * ( width in mm) in m3/h Where kt = 1 if temperature <= 40 0C = 1.1 if temperature > 40 0C Example Width 2500 mm Temperature 30 0C 3 Vf =1.25 * 1 * ( 2500) in m /h = 3125 m3/h 4 Deep bucket conveyor Discharge point 3
Air volume Vd in m /h Vd = 1.15 * kt * kh * ( width in mm) * 3.6 in m3/h kt = 1 if temperature <= 40 0C = 1.16 if temperature > 40 0C kh = 1 if height of slope <= 3 m = 1.1 if height of slope > 3 m Feed point
Air volume Vf in m3/h Vf = kt * kh * ( width in mm) * 3.6 in m3/h Example
Width Height of slope Temperature
1400 mm 4m 30 0C KRUPP INDUSTRIES INDIA LTD
surt:\techdata\dedusting\procedure.xls
DESIGN MANUAL
DEDUSTING
Calculation Procedure SHEET 6 OF 24
Vd =1.15 * 1 * 1.1 * ( 1400) *3.6 in m3/h = 638 m3/h Vf =1*1.1 *( 630) *3.6 in m3/h 3 = 5544 m /h 5 Box feeder Discharge point
Air volume Vd in m3/h 3 Vd = km * ( width in mm) * 3.6 in m /h Where km = 0.6 if moisture level < 6 % = 0.4 if moisture level > 6 % Feed point
Air volume Vf in m3/h 3 Vf = 0.27 * ( width in mm) * 3.6 in m /h Example
Width 2500 Moisture level % 4 3 Vd =0.4 * ( 2500) *3.6 in m /h = 3600 m3/h 3 Vf =0.27*( 2500) *3.6 in m /h 3 = 2430 m /h
6 Weigh belt Discharge point
Air volume Vd in m3/h Vd = 0.525 * kt * ( width in mm) * 3.6 in m3/h Where kt = 1 if temperature <= 40 0C 0 = 1.15 if temperature > 40 C Feed point
Air volume Vf in m3/h Vf = 480 in m3/h Vf =1.4 * ( tph ) in m3/h Example
Width = tph = Temp.
when (tph * 1.4) < 480 when (tph * 1.4) > 480 2500 mm 600 tph 30 0C
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surt:\techdata\dedusting\procedure.xls
DESIGN MANUAL
DEDUSTING
Calculation Procedure SHEET 7 OF 24
Vd =0.525 * 1 * ( 2500 ) *3.6 in m3/h = 11385 m3/h Vf =1.4 * 600 in m3/h 3 = 840 m /h 7 Bucket elevator, chain - type Bottom boot
Air volume Vb in m3/h Vb = 0 when height < 12 m Vb = 14.61 * ( width in mm)0.67815 in m3/h Vb = 13.28 * ( width in mm)0.6777 in m3/h
If temperature <= 40 0C 0 If temperature > 40 C
Top hood
Air volume Vt in m3/h Vt = 19.33 * ( width in mm)0.67836 in m3/h 0.6777 3 Vt = 26.56 * ( width in mm) in m /h Example
Width Height Temp.
If temperature <= 40 0C 0 If temperature > 40 C
1000 mm 30 m 30 0C
Vb = 14.61 * ( 1000)0.67815 in m3/h = 1582 m3/h Vt = 19.33 * ( 1000)0.67836 in m3/h = 2096 m3/h 8 Bucket elevator, belt type, single casing Top hood
Air volume Vt in m3/h Vt = 27.41 * ( width in mm)0.741 in m3/h Vt = 46.1 * ( width in mm)0.6877 in m3/h Example
Width Height Temp.
If temperature <= 40 0C If temperature > 40 0C
1000 mm 30 m 30 0C
Vb = 27.41 * ( 1000)0.741 in m3/h = 4580.46 m3/h
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surt:\techdata\dedusting\procedure.xls
DESIGN MANUAL
DEDUSTING
Calculation Procedure SHEET 8 OF 24
9 Bucket elevator, belt type, double casing Bottom hood
Air volume Vb in m3/h Vb = 0 in m3/h If height < 12 m 0.741 3 Vb = 11.8 * ( width in mm) in m /h Vb = 40.92 * ( width in mm)0.52 in m3/h
0
If temperature <= 40 C If temperature > 40 0C
Top hood
Air volume Vt in m3/h 0.741 3 Vt = 15.62 * ( width in mm) in m /h Vt = 21.5 * ( width in mm)0.752 in m3/h Width Height Temp.
Example
0
If temperature <= 40 C If temperature > 40 0C
1000 mm 30 m 0 30 C
Vb = 11.8 * ( 1000)0.741 3 = 1972 m /h Vt = 15.62 * ( width in mm)0.741 3 = 2610 m /h 10 Vibrating trough without flex seal, bulk material falling Feed point
Air volume Vf in m3/h Vf = 0.16 * ( width in mm) * 3.6 * (1 + 2 * Length in m ) If temperature <= 40 0C Vf = 0.2 * ( width in mm) * 3.6 * (1 + 2 * Length in m ) If temperature > 40 0C Discharge point
Air volume Vd in m3/h Vd = 0.6 * ( width in mm) * 3.6 Vd = ( width in mm) * 3.6 Width Length Temp.
Example
Vf = = Vd = =
If temperature <= 40 0C If temperature > 40 0C 1500 mm 8m 100 0C
0.2 * ( 1500) * 3.6 * (1 + 2 * 8 )
18360
3
m /h
(1500) * 3.6
5400
m3/h
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surt:\techdata\dedusting\procedure.xls
DESIGN MANUAL
DEDUSTING
Calculation Procedure SHEET 9 OF 24
11 Vibrating trough without flex seal, bulk material standing Feed point
Air volume Vf in m3/h Vf = 0.08 * ( width in mm) * 3.6 * (1 + 2 * Length in m ) If temperature <= 40 0C Vf = 0.12 * ( width in mm) * 3.6 * (1 + 2 * Length in m ) If temperature > 40 0C Discharge point
Air volume Vd in m3/h Vd = 0.4 * ( width in mm) * 3.6 Vd = 0.8 * ( width in mm) * 3.6 Example
If temperature <= 40 0C If temperature > 40 0C
Width Length
1500 mm 8m
Temp.
100 0C
Vf = 0.12 * ( 1500) * 3.6 * (1 + 2 * 8 ) 3 = 11016 m /h Vd = 08 * (1500) * 3.6 = 4320 m3/h 12 Vibrating trough with flex seal, bulk material falling Feed point
Air volume Vf in m3/h 0 Vf = 0.08 * ( width in mm) * 3.6 * (1 + 2 * Length in m ) If temperature <= 40 C Vf = 0.12 * ( width in mm) * 3.6 * (1 + 2 * Length in m ) If temperature > 40 0C Discharge point
Air volume Vd in m3/h Vd = 0.4 * ( width in mm) * 3.6 Vd = 0.7 * ( width in mm) * 3.6 Example
Width Length Temp.
If temperature <= 40 0C If temperature > 40 0C 1500 mm 8m 100 0C
Vf = 0.12 * ( 1500) * 3.6 * (1 + 2 * 8 ) 3 = 11016 m /h Vd = 0.7 * (1500) * 3.6 = 3780
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surt:\techdata\dedusting\procedure.xls
DESIGN MANUAL
DEDUSTING
Calculation Procedure SHEET 10 OF 24
13 Vibrating trough with flex seal, bulk material standing Feed point
Air volume Vf in m3/h Vf = 0.05 * ( width in mm) * 3.6 * (1 + 2 * Length in m ) If temperature <= 40 0C Vf = 0.075 * ( width in mm) * 3.6 * (1 + 2 * Length in m ) If temperature > 40 0C Discharge point
Air volume Vd in m3/h
If temperature <= 40 0C If temperature > 40 0C
Vd = 0.35 * ( width in mm) * 3.6 Vd = 0.55 * ( width in mm) * 3.6 Example
Width Length Temp.
1500 mm 8m 100 0C
Vf = 0.075 * ( 1500) * 3.6 * (1 + 2 * 8 ) = 6885 m3/h Vd = 0.55 * (1500) * 3.6 = 2970 14 Vibrating screen without flex seal Feed point
Air volume Vf in m3/h Vf_spec = 0 Vf_spec = kt * 0.6 * ( width in mm ) * 3.6 kt = 1 kt = 1.1
If length / width < 2.5 If length / width > 2.5 If temperature <= 40 0C If temperature > 40 0C
Vf = Vf_spec Screen track
Air volume Vst in m3/h
Vst_spec = 0.3 * ( width in mm ) * 3.6 Vst_spec = 1.1 * 0.3 * ( width in mm ) * 3.6 Vst = 0 Vst = Vst_spec
If temperature <= 40 0C If temperature > 40 0C
If length / width < 2.5 If length / width > 2.5
Discharge point
Air volume Vd in m3/h Vd_spec = 0.75 * ( width in mm ) * 3.6 Vd_spec = 1.3 * ( width in mm ) * 3.6
0
If temperature <= 40 C If temperature > 40 0C
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surt:\techdata\dedusting\procedure.xls
DESIGN MANUAL
DEDUSTING
Calculation Procedure SHEET 11 OF 24
Vd = Vf_spec + Vst_spec + Vd_spec If length / width < 2.5 Vd = Vd_spec If length / width > 2.5 Example
Width Length Temp. Vf_spec = 1.1 * 0.6 * (1500 ) * 3.6
= Vf = = Vst_spec = = Vst = = Vd_spec = = Vd = =
1500 mm 8000 mm 100 0C
3564 Vf_spec
3564 m3/h 1.1*0.3 * ( 1500 ) * 3.6
1782 Vst_spec 1782 m3/h 1.3 * ( 1500 ) * 3.6 7020 Vd_spec 7020 m3/h
15 Vibrating screen with flex seal Feed point
Air volume Vf in m3/h Vf_spec = 0 Vf_spec = 0.2 * ( width in mm ) * 3.6
If length / width < 2.5 If length / width > 2.5
Vf = Vf_spec Vf = 1.1 * Vf_spec
If temperature <= 40 0C 0 If temperature > 40 C
Screen track
Air volume Vst in m3/h
Vst_spec = 0.3 * ( width in mm ) * 3.6 Vst_spec = 0.55 * ( width in mm ) * 3.6 Vst = Vf_spec +Vst_spec Vst = Vst_spec Width Length
Example
Vf_spec = = Vf = =
Temp. 0.2 * (1500 ) * 3.6 1080 1.1 * Vf_spec 1188 m3/h
If temperature <= 40 0C If temperature > 40 0C
If length / width < 2.5 If length / width > 2.5 1500 mm 8000 mm 0
100 C
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DESIGN surt:\techdata\dedusting\procedure.xls
DEDUSTING
Calculation Procedure
MANUAL
SHEET 12 OF 24
Vst_spec = 0.55 * ( 1500 ) * 3.6 = 2970 Vst = Vst_spec 3 = 2970 m /h 16 Aeropol Pressure vessel 3
Air volume Vpa in m /h Vpa = 0.00000000002 * (Aeropol dia.)4 + 0.00000024 * (Aeropol dia.)3 - 0.001 * (Aeropol dia.)2 + 1.353 * ( Aeropol dia.) - 221.1 vessel dia. In mm Aeropol dia m3/h m3/min
800 352 6
1000 392 7
1250 425 7
1600 498 8
2000 725 12
2500 1443 24
Conveying pipe
Air volume Vcp in m3/h Vcp = tph * ((273 + temp) / 273) * 1.1 Aeropol dia. tph Temperature
Example
Vpa = Vcp =
1000 mm 65 80 0C
391.90 m3/h 92.45 m3/h
17 Poldos pressure vessel conveyor Fluidisation air 3
Air volume Vfl in m /h Vfl = 2 * (spec air volume) * ((273 + Temperature) / 293) Where 3 spec air volume = air volume for aeration in m /h Temperature = aeration air temperature in 0 C Compressor
Air volume Vc in m3/h Vfl = (spec air volume) * ((273 + Temperature) / 293) * 1.1 Where spec air volume = air volume of compressor in m3/h Temperature = compressor air temperature in 0 C 3 Volume for aeration air in m /h Example 0
Temperature of aeration air in C 3 Volume for compressor air in m /h Temperature of compressor air in 0 C
150 30 8000 30
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DESIGN surt:\techdata\dedusting\procedure.xls
DEDUSTING
Calculation Procedure
MANUAL
SHEET 13 OF 24
Vfl = 2 * (150) * ((273 + 30) / 293) 3 = 310 m /h Vfl = (spec air volume) * ((273 + Temperature) / 293) * 1.1 = 9100 18 Fluidor Aeration air
Air volume Va in m3/h Va = ka * ((width in mm)/1000) * (length in m) * 60 * (273 + temp)/293 * 1.1 2 ka = 2 in m3/min/m for raw meal, cement = 5 in m3/min/m2 for circulating material = 6.7 in m3/min/m2 for grits Example
width length
300 25
mm m
temperature
30
0
C
Va = 2 * (300/1000) * 25 * 60 * (273 + 30)/293 * 1.1 for raw meal / cement 3 1024 m /h Va = 5 * (300/1000) * 25 * 60 * (273 + 30)/293 * 1.1 for circulating material 2559 m3/h Va = 6.7 * (300/1000) * 25 * 60 * (273 + 30)/293 * 1.1for grits 3430 m3/h 19 Clinker silo feed silo penthouse closed, 1 feed opening Silo
Air volume Vs in m3/h Vs = (Dia of silo/1000)2 * pi()/4 * (Dia of silo/2000) * 0.5773503/3 * 3 Feed opening
Air volume Vf in m3/h Vf = width of opening in mm * height of opening in mm /1000 * 1.5 * 3.6 3
Required air volume Vr in m /h Vr = Vs If Vs > Vf Vr = Vf If Vs < Vf Silo dia 10000 mm width 2000 mm height 2500 mm 2 Vs = (10000/1000) * pi()/4 * (10000/2000) * 0.5773503/3 * 3 227 m3/h
Example
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DESIGN
surt:\techdata\dedusting\procedure.xls
DEDUSTING
Calculation Procedure
MANUAL
SHEET 14 OF 24
Vf = 2000 * 2500 /1000 * 1.5 * 3.6 3 27000 m /h 3 Vr = Vf = 27000 m /h as Vs < Vf 20 Clinker silo feed silo penthouse closed, 2 feed opening Silo
Air volume Vs in m3/h 2 Vs = (Dia of silo/1000) * pi()/4 * (Dia of silo/2000) * 0.5773503/3 * 3 Feed opening 1
Air volume Vf1 in m3/h Vf1 = width of opening1 in mm * height of opening1 in mm /1000 * 1.5 * 3.6 Feed opening 2 3
Air volume Vf2 in m /h Vf2 = width of opening2 in mm * height of opening2 in mm /1000 * 1.5 * 3.6 Vf = Vf1 + Vf2 Required air volume Vr in m3/h Vr = Vs If Vs > Vf Vr = Vf If Vs < Vf Example
Vs = Vf1 = Vf2 = Vf = Vr =
Silo dia 12000 mm width1 1000 mm width1 900 mm height1 1250 mm height2 1300 mm 2 (12000/1000) * pi()/4 * (12000/2000) * 0.5773503/3 * 3 392 m3/h 1000 * 1250 /1000 * 1.5 * 3.6 6750 m3/h 900 * 1300 /1000 * 1.5 * 3.6 3 6318 m /h 3 Vf1+Vf2 = 13068 m /h 3 Vf = 13068 m /h as Vs < Vf
21 Clinker silo feed silo penthouse closed, 3 feed opening Silo
Air volume Vs in m3/h Vs = (Dia of silo/1000)2 * pi()/4 * (Dia of silo/2000) * 0.5773503/3 * 3 Feed opening 1
Air volume Vf1 in m3/h Vf1 = width of opening1 in mm * height of opening1 in mm /1000 * 1.5 * 3.6
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DESIGN
surt:\techdata\dedusting\procedure.xls
DEDUSTING
Calculation Procedure
MANUAL
SHEET 15 OF 24 Feed opening 2 3
Air volume Vf2 in m /h Vf2 = width of opening2 in mm * height of opening2 in mm /1000 * 1.5 * 3.6 Feed opening 3
Air volume Vf3 in m3/h Vf3 = width of opening3 in mm * height of opening3 in mm /1000 * 1.5 * 3.6 Vf = Vf1 + Vf2 +Vf3 3
Required air volume Vr in m /h Vr = Vs If Vs > Vf Vr = Vf If Vs < Vf Example
Vs = Vf1 = Vf2 = Vf3 = Vf = Vr =
Silo dia 15000 width1 1000 width1 900 width3 900 height1 1250 height2 1300 height3 1300 (15000/1000)2 * pi()/4 * (15000/2000) * 0.5773503/3 * 3 3 765 m /h 1000 * 1250 /1000 * 1.5 * 3.6 6750 m3/h 900 * 1300 /1000 * 1.5 * 3.6 3 6318 m /h 900 * 1300 /1000 * 1.5 * 3.6 6318 Vf1 + Vf2 + Vf3 3 19386 m /h 3 Vf = 19386 m /h as Vs < Vf
22 Clinker silo feed silo penthouse open, 1 feed opening Silo
Air volume Vs in m3/h
Vs = (Dia of silo/1000)2 * pi()/4 * (Dia of silo/2000) * 0.5773503/3 * 3 Feed opening
Air volume Vf in m3/h Vf = width of opening in mm * height of opening in mm /1000 * 2 * 3.6 Required air volume Vr in m3/h Vr = Vs If Vs > Vf Vr = Vf If Vs < Vf Example
Silo dia 10000 width 2000 height 2500 KRUPP INDUSTRIES INDIA LTD
DESIGN
surt:\techdata\dedusting\procedure.xls
DEDUSTING
Calculation Procedure
MANUAL
SHEET 16 OF 24
Vs = (10000/1000)2 * pi()/4 * (10000/2000) * 0.5773503/3 * 3 227 m3/h Vf = 2000 * 2500 /1000 * 2 * 3.6 3 36000 m /h 3 Vr = Vf = 36000 m /h as Vs < Vf 23 Clinker silo feed silo penthouse open, 2 feed opening Silo
Air volume Vs in m3/h
Vs = (Dia of silo/1000)2 * pi()/4 * (Dia of silo/2000) * 0.5773503/3 * 3 Feed opening 1 3
Air volume Vf1 in m /h Vf1 = width of opening1 in mm * height of opening1 in mm /1000 * 2 * 3.6 Feed opening 2
Air volume Vf2 in m3/h Vf2 = width of opening2 in mm * height of opening2 in mm /1000 * 2 * 3.6 Vf = Vf1 + Vf2 Required air volume Vr in m3/h Vr = Vs If Vs > Vf Vr = Vf If Vs < Vf Example
Vs = Vf1 = Vf2 = Vf = Vr =
Silo dia 12000 width1 1000 width2 900 height1 1250 height2 1300 (12000/1000)2 * pi()/4 * (12000/2000) * 0.5773503/3 * 3 392 m3/h 1000 * 1250 /1000 * 2 * 3.6 9000 m3/h 900 * 1300 /1000 * 2 * 3.6 8424 m3/h 17424 m3/h 3 Vf = 17424 m /h as Vs < Vf
24 Clinker silo feed silo penthouse open, 3 feed opening Silo
Air volume Vs in m3/h Vs = (Dia of silo/1000)2 * pi()/4 * (Dia of silo/2000) * 0.5773503/3 * 3
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DESIGN MANUAL surt:\techdata\dedusting\procedure.xls
DEDUSTING
Calculation Procedure SHEET 17 OF 24
Feed opening 1
Air volume Vf1 in m3/h Vf1 = width of opening1 in mm * height of opening1 in mm /1000 * 2 * 3.6 Feed opening 2
Air volume Vf2 in m3/h Vf2 = width of opening2 in mm * height of opening2 in mm /1000 * 2 * 3.6 Feed opening 3
Air volume Vf3 in m3/h Vf3 = width of opening3 in mm * height of opening3 in mm /1000 * 2 * 3.6 Vf = Vf1 + Vf2 +Vf3 3
Required air volume Vr in m /h Vr = Vs If Vs > Vf Vr = Vf If Vs < Vf Example
Vs = Vf1 = Vf2 = Vf3 = Vf =
Silo dia 15000 width1 1000 width1 900 width3 900 height1 1250 height2 1300 height3 1300 (15000/1000)2 * pi()/4 * (15000/2000) * 0.5773503/3 * 3 3 765 m /h 1000 * 1250 /1000 * 2 * 3.6 6750 m3/h 900 * 1300 /1000 * 2 * 3.6 3 6318 m /h 900 * 1300 /1000 * 2 * 3.6 6318 Vf1 + Vf2 + Vf3 3 19386 m /h
Vr =
Vf =
3 19386 m /h
as Vs < Vf
25 Clinker silo feed cover trapezoidal plate, 1 feed opening Silo
Air volume Vs in m3/h Vs1 = Dia of silo / 2000 * pi() / 180 * 35 Vs2 = 1.2 * 293 / (273 + temp) Vs3 = Vs1 * (1.2 - Vs2) * 10 0.5 Vs4 = (2 * Vs3 / (3 * Vs2)) if
(Dia of silo /1000)2 * pi()/4 * Dia of silo / 2000 * 0.5773503 / 3 * 6 < Dia of silo / 1000 * pi() * width annular gap * Vs4 * 3.6 KRUPP INDUSTRIES INDIA LTD
DESIGN MANUAL
surt:\techdata\dedusting\procedure.xls
DEDUSTING
Calculation Procedure SHEET 18 OF 24
then
Vs = (Dia of silo /1000) * pi() * width annular gap * Vs4 * 3.6 otherwise Vs = (Dia of silo /1000) 2 * pi() / 4 * Dia of silo / 2000 * 0.5773503 / 3 * 6 Feed opening
Air volume Vf in m3/h Vf = width of opening in mm * height of opening in mm /1000 * 2 * 3.6 Required air volume Vr in m3/h Vr = Vs If Vs > Vf Vr = Vf If Vs < Vf Example
Vs1 = Vs2 = Vs3 = Vs4 =
Vs = Vf = Vr =
Silo dia 10000 annular gap 50 temp 40 width 2000 height 2500 10000 / 2000 * pi() / 180 * 35 3.05433 1.2 * 293 / (273 + temp) 1.12332 Vs1 * (1.2 - Vs2) * 10 2.34198 (2 * Vs3 / (3 * Vs2)) 0.5 1.17894 2 (Dia of silo /1000) * pi()/4 * Dia of silo / 2000 * 0.5773503 / 3 * 6 = 453 Dia of silo / 1000 * pi() * width annular gap * Vs4 * 3.6 = 6667 (10000/1000) * pi() * width annular gap * Vs4 * 3.6 3 6667 m /h 2000 * 2500 / 1000 * 2 * 3.6 36000 m3/h 3 Vf = 36000 m /h as Vs < Vf
26 Clinker silo feed cover trapezoidal plate, 2 feed opening Silo
Air volume Vs in m3/h Vs1 = Dia of silo / 2000 * pi() / 180 * 35 Vs2 = 1.2 * 293 / (273 + temp) Vs3 = Vs1 * (1.2 - Vs2) * 10 Vs4 = (2 * Vs3 / (3 * Vs2)) 0.5 if 2
(Dia of silo /1000) * pi()/4 * Dia of silo / 2000 * 0.5773503 / 3 * 6 < Dia of silo / 1000 * pi() * width annular gap * Vs4 * 3.6 KRUPP INDUSTRIES INDIA LTD
DESIGN MANUAL
surt:\techdata\dedusting\procedure.xls
DEDUSTING
Calculation Procedure SHEET 19 OF 24
then
Vs = (Dia of silo /1000) * pi() * width annular gap * Vs4 * 3.6 otherwise 2
Vs = (Dia of silo /1000) * pi() / 4 * Dia of silo / 2000 * 0.5773503 / 3 * 6 Feed opening 3
Air volume Vf in m /h Vf1 = width of opening1 in mm * height of opening1 in mm /1000 * 2 * 3.6 Vf2 = width of opening2 in mm * height of opening2 in mm /1000 * 2 * 3.6 Vf = Vf1 + Vf2 Required air volume Vr in m3/h Vr = Vs If Vs > Vf Vr = Vf If Vs < Vf Example
Vs1 = Vs2 = Vs3 = Vs4 =
Vs = Vf1 = Vf2 = Vf = Vr =
Silo dia 12000 annular gap 50 temp 40 width1 1000 width2 900 height1 1250 height2 1300 12000 / 2000 * pi() / 180 * 35 3.05433 1.2 * 293 / (273 + temp) 1.12332 Vs1 * (1.2 - Vs2) * 10 2.34198 (2 * Vs3 / (3 * Vs2)) 0.5 1.17894 (Dia of silo /1000)2 * pi()/4 * Dia of silo / 2000 * 0.5773503 / 3 * 6 = 784 Dia of silo / 1000 * pi() * width annular gap * Vs4 * 3.6 = 8000 (12000/1000) * pi() * width annular gap * Vs4 * 3.6 8000 m3/h 1000 * 1250 / 1000 * 2 * 3.6 3 9000 m /h 900 * 1300 / 1000 * 2 * 3.6 8424 m3/h Vf1 + Vf2 17424 3 Vf = 17424 m /h as Vs < Vf
27 Clinker silo feed cover trapezoidal plate, 3 feed opening Silo
Air volume Vs in m3/h Vs1 = Dia of silo / 2000 * pi() / 180 * 35 Vs2 = 1.2 * 293 / (273 + temp) KRUPP INDUSTRIES INDIA LTD
DESIGN MANUAL
surt:\techdata\dedusting\procedure.xls
DEDUSTING
Calculation Procedure SHEET 20 OF 24
Vs3 = Vs1 * (1.2 - Vs2) * 10 Vs4 = (2 * Vs3 / (3 * Vs2)) 0.5 if
(Dia of silo /1000)2 * pi()/4 * Dia of silo / 2000 * 0.5773503 / 3 * 6 < Dia of silo / 1000 * pi() * width annular gap * Vs4 * 3.6 then
Vs = (Dia of silo /1000) * pi() * width annular gap * Vs4 * 3.6 otherwise 2
Vs = (Dia of silo /1000) * pi() / 4 * Dia of silo / 2000 * 0.5773503 / 3 * 6 Feed opening
Air volume Vf in m3/h Vf1 = width of opening1 in mm * height of opening1 in mm /1000 * 2 * 3.6 Vf2 = width of opening2 in mm * height of opening2 in mm /1000 * 2 * 3.6 Vf3 = width of opening3 in mm * height of opening3 in mm /1000 * 2 * 3.6 Vf = Vf1 + Vf2 + Vf3 Required air volume Vr in m3/h Vr = Vs If Vs > Vf Vr = Vf If Vs < Vf Example
Vs1 = Vs2 = Vs3 = Vs4 =
Vs = Vf1 = Vf2 = Vf3 =
Silo dia 15000 annular gap 50 temp 40 width1 1000 width2 900 width3 900 height1 1250 height2 1300 height3 1300 15000 / 2000 * pi() / 180 * 35 3.05433 1.2 * 293 / (273 + temp) 1.12332 Vs1 * (1.2 - Vs2) * 10 2.34198 (2 * Vs3 / (3 * Vs2)) 0.5 1.17894 (Dia of silo /1000)2 * pi()/4 * Dia of silo / 2000 * 0.5773503 / 3 * 6 = 1530 Dia of silo / 1000 * pi() * width annular gap * Vs4 * 3.6 = 10000 (15000/1000) * pi() * width annular gap * Vs4 * 3.6 10000 m3/h 1000 * 1250 / 1000 * 2 * 3.6 3 9000 m /h 900 * 1300 / 1000 * 2 * 3.6 8424 m3/h 900 * 1300 / 1000 * 2 * 3.6 8424 m3/h KRUPP INDUSTRIES INDIA LTD
DESIGN MANUAL
surt:\techdata\dedusting\procedure.xls
DEDUSTING
Calculation Procedure SHEET 21 OF 24
Vf = Vf1 + Vf2 + Vf3 25848 3 Vr = Vf = 25848 m /h
as Vs < Vf
28 Bin on top 1 feed opening
m3/h m3/h
if temperature <= 400C if temperature > 400C
V1 = 1 * width1 * height1 / 1000 *3.6 = 1.15 * width1 * height1 / 1000 *3.6
m3/h m3/h
if temperature <= 400C if temperature > 400C
V2 = 1 * width2 * height2 / 1000 *3.6 = 1.15 * width2 * height2 / 1000 *3.6
m3/h 3 m /h
if temperature <= 400C 0 if temperature > 40 C
V = 1 * width1 * height1 / 1000 *3.6 = 1.15 * width1 * height1 / 1000 *3.6 Example
width1 height
1000 mm 1200 mm 30 0C
temp.
V = 1000 * 1200 /1000 * 3.6 = 4320 29 Bin on top 2 feed opening
V = V1 + V2 Example
m3/h width1 height temp.
800 mm 1000 mm 30 0C
width1 height temp.
500 mm 800 mm 30 0C
V1 = 800 * 1000 /1000 * 3.6 = 2880 V2 = 500 * 800 /1000 * 3.6 = 1440 V= 4320 m3/h 30 Bin on top PNEUMATIC FEED 3
V = 1.4 * tph m /h 31 Polycom
KRUPP INDUSTRIES INDIA LTD
DESIGN MANUAL
surt:\techdata\dedusting\procedure.xls
DEDUSTING
Calculation Procedure SHEET 22 OF 24
32 Feed hopper
V = 0.5 * width * height / 1000 * 3.6
m3/h
33 Crusher moisture level < 6% Inlet
Vi = 61 * width_inlet * height_inlet / 1000000 * 60
3
m /h
Outlet
Vo = 76 * width_inlet * height_inlet / 1000000 * 60
m3/h
34 Hammer crusher Inlet
m3/h
Vi = 61 * width_inlet * height_inlet / 1000000 * 60 Outlet
m3/h
Vo = 107 * width_inlet * height_inlet / 1000000 * 60 35 Vacuume relief
Air volume V in m3/h Y1 = 1.3089969 X = Abs( Temp. * 100) / ( 8 * 7.85 * 9.81 ) If X > 1 Then Y2 = Atn(-1 / Sqr ( -1 * 1 + 1 ) ) +2 * Atn ( 1 ) '=arccos(1)' Else
Y2 = Atn(-X / Sqr ( -X * X + 1 ) ) +2 * Atn ( 1 ) '=arccos(X)' Y3 = width * length * 0.000001 Y4 = Y3 * ( Cos ( Y2 ) - Cos ( Y1 ) If Y2 > Y1 Then V=0 Else V = ( 2 * Y42 * Abs((Temp1 * 100) / (1.8 *1.2)))0.5 * 3600 * ((273 +Temp) / 293 ) Example
width length Temp1 Temp2
550 mm 550 mm = Temp 60 0C 0 = Temp1 5 C
Y1 = 1.309 X = Abs( 5 * 100) / ( 8 * 7.85 * 9.81 ) 0.8116 Y2 = ACOS(X) As X < 1 0.62391 KRUPP INDUSTRIES INDIA LTD
DESIGN MANUAL
surt:\techdata\dedusting\procedure.xls
DEDUSTING
Calculation Procedure SHEET 23 OF 24
Y3 = width * length * 0.000001 0.3025 Y4 = Y3 * ( Cos ( Y2 ) - Cos ( Y1 )) 0.16722 Y2 < Y1 Hence V = ( 2 * Y42 * Abs((Temp1 * 100) / (1.8 *1.2)))0.5 * 3600 * ((273 +Temp) / 293 ) 14720.7 m3/h 36 Bulk loading open
Air volume in m3/h If Dia of hood > 0 V = Dia. Of hood / 1000 * PI(0 * 0.1 * 2.5 * 3600 * (273 +Temp) / 293 If Dia of hood = 0 V =( width / 1000 + length / 1000) * 2 * 0.1 * 2.5 * 3600 * (273 +Temp) / 293 Example1
Dia. Of hood
500 mm
Temp 20 0C V = Dia. Of hood / 1000 * PI(0 * 0.1 * 2.5 * 3600 * (273 +Temp) / 293 3 1413.72 m /h width 800 mm length 400 mm Temp 20 0C V = (width / 1000 + length / 1000) * 2 * 0.1 * 2.5 * 3600 * (273 +Temp) / 293 2160
Example2
37 Cement cooler Fluidor
Air volume Vf in m3/h Vf = ka * ((width in mm)/1000) * (length in m) * 60 * (273 + temp)/293 * 1.1 2 ka = 2 in m3/min/m for raw meal, cement 2 = 5 in m3/min/m for circulating material Example
width length
500 25
mm m
temperature
100
0
C
Va = 2 * (500/1000) * 25 * 60 * (273 + 100)/293 * 1.1for raw meal / cement 2101 m3/h Va = 5 * (500/1000) * 25 * 60 * (273 + 30)/293 * 1.1 for circulating material 4266 m3/h Screw conveyor
Air volume Vsc in m3/h
KRUPP INDUSTRIES INDIA LTD
DESIGN MANUAL
DEDUSTING
Calculation Procedure SHEET 24 OF 24
Dsc is Dia. Of screw conveyor in mm surt:\techdata\dedusting\procedure.xls
If ( Dsc / 1000)2 / 2 - 0.5 * (Dsc / 1000 )2 * PI() / 4 *2* 3600 < 510 + 1.237 * Dsc Then Vsc = 510 + 1.237 *Dsc Else Vsc = ( Dsc / 1000)2 / 2 - 0.5 * (Dsc / 1000 )2 * PI() / 4 *2* 3600 Example
Dsc
500 mm
( Dsc / 1000)2 / 2 - 0.5 * (Dsc / 1000 )2 * PI() / 4 *2* 3600 -706.73 510 + 1.237 * Dsc 1128.5 Vsc = 510 + 1.237 *Dsc 1128.5 m3/h Cement cooler
Air volume Vcc in m3/h Vcc = tph * 1.2 Example tph Vcc = tph * 1.2 3 120 m /h 38 Other machine
V = Air volume in m3/h
surt:\techdata\dedusting\procedure.xls
100
