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