• No results found

Bag Filter Calculations, Mr. Bokaian's Copy

N/A
N/A
Protected

Academic year: 2021

Share "Bag Filter Calculations, Mr. Bokaian's Copy"

Copied!
24
0
0

Loading.... (view fulltext now)

Full text

(1)

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

(2)

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

(3)

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 m3/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

pipe I D pipe I D

Di Di

(4)

MANUAL

SHEET 4 OF 24 E Calculation for air volume

1 Troughed belt conveyor Discharge point

Air volume Vd in m3/h

Vd = kt * kh * ( Belt width in mm) * ( (belt speed in m/s) / 1.7)0.5 * 3.6 in m3/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

Air volume Vfb in m3/h Vfb = kb * 60 in m3/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 0C Vd =1*1 *( 2500) *( (1.2) / 1.7)0.5 * 3.6 in m3/h = 7561.51 m3/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 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

(5)

MANUAL

SHEET 5 OF 24 Feed point Air volume Vf in m3/h Vf = kt * kh * ( width in mm) * 3.6 in m3/h Example Width 2500 mm Height of slope 6 mm Temperature 30 0C Vd =1.15 * 1 * 1.1 * ( 2500) *3.6 in m3/h = 11385 m3/h Vf =1*1.1 *( 2500) *3.6 in m3/h = 9900 m3/h

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 Vf =1.25 * 1 * ( 2500) in m3/h = 3125 m3/h

4 Deep bucket conveyor Discharge point Air volume Vd in m3/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 1400 mm Height of slope 4 m Temperature 30 0C

(6)

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 = 5544 m3/h 5 Box feeder Discharge point Air volume Vd in m3/h Vd = km * ( width in mm) * 3.6 in m3/h Where km = 0.6 if moisture level < 6 % = 0.4 if moisture level > 6 % Feed point Air volume Vf in m3/h Vf = 0.27 * ( width in mm) * 3.6 in m3/h Example Width 2500 Moisture level % 4 Vd =0.4 * ( 2500) *3.6 in m3/h = 3600 m3/h Vf =0.27*( 2500) *3.6 in m3/h = 2430 m3/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 = 1.15 if temperature > 40 0C Feed point Air volume Vf in m3/h Vf = 480 in m3/h when (tph * 1.4) < 480 Vf =1.4 * ( tph ) in m3/h when (tph * 1.4) > 480 Example Width = 2500 mm tph = 600 tph Temp. 300C

(7)

Vd =0.525 * 1 * ( 2500 ) *3.6 in m3/h = 11385 m3/h

Vf =1.4 * 600 in m3/h = 840 m3/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 If temperature <= 40 0C Vb = 13.28 * ( width in mm)0.6777 in m3/h If temperature > 40 0C Top hood Air volume Vt in m3/h Vt = 19.33 * ( width in mm)0.67836 in m3/h If temperature <= 40 0C Vt = 26.56 * ( width in mm)0.6777 in m3/h If temperature > 40 0C Example Width 1000 mm Height 30 m Temp. 300C 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 If temperature <= 40 0C Vt = 46.1 * ( width in mm)0.6877 in m3/h If temperature > 40 0C Example Width 1000 mm Height 30 m Temp. 300C Vb = 27.41 * ( 1000)0.741 in m3/h = 4580.46 m3/h

(8)

9 Bucket elevator, belt type, double casing Bottom hood Air volume Vb in m3/h Vb = 0 in m3/h If height < 12 m Vb = 11.8 * ( width in mm)0.741 in m3/h If temperature <= 40 0C Vb = 40.92 * ( width in mm)0.52 in m3/h If temperature > 40 0C Top hood Air volume Vt in m3/h Vt = 15.62 * ( width in mm)0.741 in m3/h If temperature <= 40 0C Vt = 21.5 * ( width in mm)0.752 in m3/h If temperature > 40 0C Example Width 1000 mm Height 30 m Temp. 300C Vb = 11.8 * ( 1000)0.741 = 1972 m3/h Vt = 15.62 * ( width in mm)0.741 = 2610 m3/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 If temperature <= 40 0C Vd = ( width in mm) * 3.6 If temperature > 40 0C Example Width 1500 mm Length 8 m Temp. 1000C Vf = 0.2 * ( 1500) * 3.6 * (1 + 2 * 8 ) = 18360 m3/h Vd = (1500) * 3.6 = 5400 m3/h

(9)

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 If temperature <= 40 0C Vd = 0.8 * ( width in mm) * 3.6 If temperature > 40 0C Example Width 1500 mm Length 8 m Temp. 1000C Vf = 0.12 * ( 1500) * 3.6 * (1 + 2 * 8 ) = 11016 m3/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

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 If temperature <= 40 0C Vd = 0.7 * ( width in mm) * 3.6 If temperature > 40 0C Example Width 1500 mm Length 8 m Temp. 1000C Vf = 0.12 * ( 1500) * 3.6 * (1 + 2 * 8 ) = 11016 m3/h Vd = 0.7 * (1500) * 3.6 = 3780

(10)

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 Vd = 0.35 * ( width in mm) * 3.6 If temperature <= 40 0C Vd = 0.55 * ( width in mm) * 3.6 If temperature > 40 0C Example Width 1500 mm Length 8 m Temp. 1000C 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 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 0C Vst_spec = 1.1 * 0.3 * ( width in mm ) * 3.6 If temperature > 40 0C

Vst = 0 If length / width < 2.5

Vst = Vst_spec If length / width > 2.5

Discharge point

Air volume Vd in m3/h

Vd_spec = 0.75 * ( width in mm ) * 3.6 If temperature <= 40 0C Vd_spec = 1.3 * ( width in mm ) * 3.6 If temperature > 40 0C

(11)

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 m3/h Vst_spec = 1.1*0.3 * ( 1500 ) * 3.6 = 1782 Vst = Vst_spec = 1782 m3/h Vd_spec = 1.3 * ( 1500 ) * 3.6 = 7020 Vd = Vd_spec = 7020 m3/h 15 Vibrating screen with flex seal

Feed point

Air volume Vf in m3/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 0C

Vf = 1.1 * Vf_spec If temperature > 40 0C

Screen track

Air volume Vst in m3/h

Vst_spec = 0.3 * ( width in mm ) * 3.6 If temperature <= 40 0C Vst_spec = 0.55 * ( width in mm ) * 3.6 If temperature > 40 0C 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. 1000C Vf_spec = 0.2 * (1500 ) * 3.6 = 1080 Vf = 1.1 * Vf_spec = 1188 m3/h

KRUPP INDUSTRIES INDIA LTD

(12)

Vst_spec = 0.55 * ( 1500 ) * 3.6 = 2970 Vst = Vst_spec = 2970 m3/h 16 Aeropol Pressure vessel

Air volume Vpa in m3/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 m3/h Vcp = tph * ((273 + temp) / 273) * 1.1

Example Aeropol dia. 1000 mm

tph 65

Temperature 80 0C

Vpa = 391.90 m3/h

Vcp = 92.45 m3/h

17 Poldos pressure vessel conveyor Fluidisation air

Air volume Vfl in m3/h

Vfl = 2 * (spec air volume) * ((273 + Temperature) / 293) Where

spec air volume = air volume for aeration in m3/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

Example Volume for aeration air in m3/h 150

Temperature of aeration air in 0 C 30

Volume for compressor air in m3/h 8000

Temperature of compressor air in 0 C 30

Aeropol dia m3/h m3/min

(13)

Vfl = 2 * (150) * ((273 + 30) / 293) = 310 m3/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 ka = 2 in m3/min/m2 for raw meal, cement

= 5 in m3/min/m2 for circulating material = 6.7 in m3/min/m2 for grits

Example width 300 mm

length 25 m

temperature 30 0C

Va = 2 * (300/1000) * 25 * 60 * (273 + 30)/293 * 1.1 for raw meal / cement 1024 m3/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 Required air volume Vr in m3/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 m3/h

KRUPP INDUSTRIES INDIA LTD

(14)

Vf = 2000 * 2500 /1000 * 1.5 * 3.6 27000 m3/h

Vr = Vf = 27000 m3/h as Vs < Vf 20 Clinker silo feed silo penthouse closed, 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

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

Air volume Vf2 in m3/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 Silo dia 12000 mm

width1 1000 mm width1 900mm height1 1250 mm height2 1300mm Vs = (12000/1000)2 * pi()/4 * (12000/2000) * 0.5773503/3 * 3 392 m3/h Vf1 = 1000 * 1250 /1000 * 1.5 * 3.6 6750 m3/h Vf2 = 900 * 1300 /1000 * 1.5 * 3.6 6318 m3/h Vf = Vf1+Vf2 = 13068 m3/h Vr = Vf = 13068 m3/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

(15)

Feed opening 2

Air volume Vf2 in m3/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

Required air volume Vr in m3/h Vr = Vs If Vs > Vf Vr = Vf If Vs < Vf

Example Silo dia 15000

width11000 width1 900 width3900

height1 1250 height2 1300 height3 1300

Vs = (15000/1000)2 * pi()/4 * (15000/2000) * 0.5773503/3 * 3 765 m3/h Vf1 = 1000 * 1250 /1000 * 1.5 * 3.6 6750 m3/h Vf2 = 900 * 1300 /1000 * 1.5 * 3.6 6318 m3/h Vf3 = 900 * 1300 /1000 * 1.5 * 3.6 6318 Vf = Vf1 + Vf2 + Vf3 19386 m3/h Vr = Vf = 19386 m3/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

(16)

Vs = (10000/1000) * pi()/4 * (10000/2000) * 0.5773503/3 * 3 227 m3/h

Vf = 2000 * 2500 /1000 * 2 * 3.6 36000 m3/h

Vr = Vf = 36000 m3/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

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 Vf = Vf1 + Vf2

Required air volume Vr in m3/h Vr = Vs If Vs > Vf Vr = Vf If Vs < Vf

Example Silo dia 12000

width11000 width2 900 height1 1250 height2 1300 Vs = (12000/1000)2 * pi()/4 * (12000/2000) * 0.5773503/3 * 3 392 m3/h Vf1 = 1000 * 1250 /1000 * 2 * 3.6 9000 m3/h Vf2 = 900 * 1300 /1000 * 2 * 3.6 8424 m3/h Vf = 17424 m3/h Vr = Vf = 17424 m3/h as Vs < Vf 24 Clinker silo feed silo penthouse open, 3 feed opening

Silo

Air volume Vs in m3/h

(17)

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

Required air volume Vr in m3/h Vr = Vs If Vs > Vf Vr = Vf If Vs < Vf

Example Silo dia 15000

width11000 width1 900 width3900

height1 1250 height2 1300 height3 1300

Vs = (15000/1000)2 * pi()/4 * (15000/2000) * 0.5773503/3 * 3 765 m3/h Vf1 = 1000 * 1250 /1000 * 2 * 3.6 6750 m3/h Vf2 = 900 * 1300 /1000 * 2 * 3.6 6318 m3/h Vf3 = 900 * 1300 /1000 * 2 * 3.6 6318 Vf = Vf1 + Vf2 + Vf3 19386 m3/h Vr = Vf = 19386 m3/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 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

(18)

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 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 m3/h

Vf = 2000 * 2500 / 1000 * 2 * 3.6 36000 m3/h

Vr = Vf = 36000 m3/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

(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

(19)

Vs = (Dia of silo /1000) 2 * 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 Vf = Vf1 + Vf2

Required air volume Vr in m3/h Vr = Vs If Vs > Vf Vr = Vf If Vs < Vf

Example Silo dia 12000 annular gap 50 temp 40

width11000 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 m3/h Vf1 = 1000 * 1250 / 1000 * 2 * 3.6 9000 m3/h Vf2 = 900 * 1300 / 1000 * 2 * 3.6 8424 m3/h Vf = Vf1 + Vf2 17424 Vr = Vf = 17424 m3/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

Calculation Procedure

MANUAL

SHEET 20 OF 24

(20)

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 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 Silo dia 15000 annular gap 50 temp 40

width11000 width2 900 width3900

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 m3/h Vf1 = 1000 * 1250 / 1000 * 2 * 3.6 9000 m3/h Vf2 = 900 * 1300 / 1000 * 2 * 3.6 8424 m3/h Vf3 = 900 * 1300 / 1000 * 2 * 3.6 8424 m3/h

(21)

Vr = Vf = 25848 m /h as Vs < Vf 28 Bin on top 1 feed opening

V = 1 * width1 * height1 / 1000 *3.6 m3/h if temperature <= 400C = 1.15 * width1 * height1 / 1000 *3.6 m3/h if temperature > 400C

Example width1 1000 mm

height 1200 mm

temp. 300C V = 1000 * 1200 /1000 * 3.6

= 4320

29 Bin on top 2 feed opening

V1 = 1 * width1 * height1 / 1000 *3.6 m3/h if temperature <= 400C = 1.15 * width1 * height1 / 1000 *3.6 m3/h if temperature > 400C V2 = 1 * width2 * height2 / 1000 *3.6 m3/h if temperature <= 400C

= 1.15 * width2 * height2 / 1000 *3.6 m3/h if temperature > 400C V = V1 + V2 m3/h

Example width1 800 mm width1 500mm

height 1000 mm height 800mm temp. 300C temp. 300C V1 = 800 * 1000 /1000 * 3.6 = 2880 V2 = 500 * 800 /1000 * 3.6 = 1440 V = 4320 m3/h 30 Bin on top PNEUMATIC FEED

V = 1.4 * tph m3/h 31 Polycom

KRUPP INDUSTRIES INDIA LTD

DESIGN

Calculation Procedure

MANUAL

SHEET 22 OF 24

(22)

V = 0.5 * width * height / 1000 * 3.6 m /h 33 Crusher moisture level < 6%

Inlet Vi = 61 * width_inlet * height_inlet / 1000000 * 60 m3/h Outlet Vo = 76 * width_inlet * height_inlet / 1000000 * 60 m3/h 34 Hammer crusher Inlet Vi = 61 * width_inlet * height_inlet / 1000000 * 60 m3/h Outlet Vo = 107 * width_inlet * height_inlet / 1000000 * 60 m3/h 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 550 mm length 550 mm Temp1 = Temp 60 0C Temp2 = Temp1 5 0C 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

(23)

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 1413.72 m3/h

Example2 width 800 mm

length 400 mm

Temp 20 0C

V = (width / 1000 + length / 1000) * 2 * 0.1 * 2.5 * 3600 * (273 +Temp) / 293 2160

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 ka = 2 in m3/min/m2 for raw meal, cement

= 5 in m3/min/m2 for circulating material

Example width 500 mm

length 25 m

temperature 100 0C

Va = 2 * (500/1000) * 25 * 60 * (273 + 100)/293 * 1.1 for 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

Calculation Procedure

MANUAL

SHEET 24 OF 24

Dsc is Dia. Of screw conveyor in mm

DEDUSTING

(24)

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 100 Vcc = tph * 1.2 120 m3/h 38 Other machine V = Air volume in m3/h

References

Related documents

© Copyright 10/12/2010 BMC Software, Inc 1 Monitoring Patterns in BMC Middleware Management Eric Olson Principal Consultant BMC Middleware

does not result in them being automatically enrolled into a workplace pension scheme and captures whether they earn £5,668 or more in 2013/14 earnings terms – the qualifying earnings

Japan and Hong Kong are the only East Asian countries where excess values increase with vertical relatedness and the estimated coefficients of vertical relatedness are significant

Ben´aˇcek and V´ıˇsek (1999) presented in their study that foreign investors preferred investment into manufacturing sectors with higher expenditures in research and development..

Nevertheless Kingsley Kofi Broni’s ceramic pieces are highly rated comparable to the works of the accomplished Ghanaian contemporary artists.. His works exemplifies highly prized

Objective: Coronary-subclavian steal syndrome (CSSS) is a rare cause of myocardial ischemia subsequent to stenosis or occlusion of the subclavian artery (SA) proximal to

BANS-S: Bedford Alzheimer Nursing Severity Scale; EQ-5D-5L: EuroQol-5D-5L; LTCFs: Long-term care facilities; NMB: Net monetary benefit; NZA: Dutch Health Care Authority;