Design of Agitator

Enter the data in yellow shaded box and select the type of agitator to getpower required. Enter suitable shaft diameter and check for critical speed.

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Client GFLProject NewApplication Purification plant, Ranjit NagarVessel No `Working Volume 0.75 KLGross Volume 1.1 KL

DWG NO

VESSEL DETAIL Dimensions Surf. Area Weight(m2) (kg)

VESSEL I/D 1000MAIN SHELL THK SS 316L 8MAIN SHELL HEIGHT SS 316 1000 3.2TOP DISH END SS 316 8 0.6BOTTOM CONE DISH THK SS 316 8 0.6VESSEL BLANK DIA (1.2 Vessel Dia) 1220LUG SUPPORT PAD HEIGHT SS 316L 250LUG SUPPORT PAD WIDTH SS 316 250LUG SUPPORT PAD THICKNESS SS 316 8NUMBER OF LUG SUPPORTS SS 316 4LUG SUPPORTS VERTICAL GUSSET HEIGHT IS2062 200LUG SUPPORT VERTICAL GUSSET WIDTH IS2062 300LUG SUPPORT VERTICAL GUSSET THICKNESS IS2062 4LUG SUPPORT HORIZONTAL GUSSET LENGTH IS2062 200LUG SUPPPORT HORIZONTAL GUSSET WIDTH IS2062 150LUG SUPPPORT HORIZONTAL SUPPORT THICKNESS IS2062 4

SHELL WT SS 316L 203TOP DISHEND WEIGHT SS 316L 38BOTTOM DISHEND WEIGHT SS 316L 38Flanges of Nozzles SS 316L 65BODY FLANGE SS 316L 700Pipes SS 316L 15RF Pads SS 316L 15Bafffles SS 316L 75Lug Support Pad Plates SS 304 15Lug Supports IS 2062 19Lifting Lugs SS 304 15Limpet Coils 0Machining CostPicking and Passivation (@ Rs 2/litre of tank - one side only)RT 30Testing Charges

1198

ADD WASTAGE 10% 120Total 1318

QTY 1Unit Rates Cost

RM Fab. Cons. Buff RM Fab. Cons. Buff(kg) (Rs/kg) (Rs/kg) (Rs/sqft)

260 40 25 110 52668 8103 5064 3746260 60 25 110 9880 2280 950 703260 60 25 110 9880 2280 950 703500 60 25 32500 3900 1625415 60 25 290500 42000 17500350 60 25 5250 900 375300 60 25 4500 900 375260 60 25 19500 4500 1875260 60 15 3900 900 225

50 25 15 960 480 288200 60 15 3000 900 225190 100 50 0 0 0

08000 0

350 15000 00

455538 67143 29452 5152 557284

45554 6714 2945 515 55728501091 73857 32397 5667 613013

Factor 1.3 796916Negotiation Margin 15.00% 119537

Total 916454Quote 936000

Client GFLProject Ranjitnagar ProjectEquipment No.Applicationn

Vessel DetailsWorking Capacity (required) 0.75Vessel Diameter 1Shell Length (TL-TL) 1Height of 2:1 Ellipsoidal Dishedend 0.3 m (D/4)+50 mm SFShell Volume 0.86 m (3.14/24)*Di^3Top Dish Volume 0.13 m3Bottom Dish Volume 0.13 m3Gross Volume 1.13 m3Operating Height (in shell) 0.79 mRecommended Baffle Length 0.89 m Baffle Width (Dt/12) 83 mmBaffle - Off the wall clearance (Dt/72) 13.9 mmVessel Diameter - Baffle Space 0.8

Agitator Data1 Agitator Type Hydrofoil - High Solidity

Agitator Sweep Diameter Ratio 0.5 (Refer Refernce Data)

Agitator Sweep Diameter. 0.50 m

No. of Agitators (Theoretical) 2.0

Scale of Agitation 10 (1 -10) Scale of Agitation : 1 - Very Gentle to 10:Vigorous

Equivalent Vessel Dia. (Teq. - square geometry 0.985

Bulk Velocity (= 6 x Scale of Agitation) 60 (ft/min)

Bulk Velocity (Vc) 0.30 m/s

Pumping Rate (Q =0.785 x Teq x Teq x Vc) 0.232 m3/s

Flow No. (Nq) 0.79 (Refer Refernce Data)

RPM (= (60x Q)/(Nq x D^3) 141.06 RPM

Reynolds No. (D2.N.ℓ/µ) 538771.4

Tip Speed 221 m/min 3.69 m/sec

Agitator RPM (Calculated on Tip Speed) 141 RPM

Properties of reactor contents

Density ℓ = 1100 kg/m3

Viscosity µ = 1.2 cp = 0.0012 kg/m s

FINAL GEOMETRY OF AGITATOR

Design of Agitator8 Batch Volume V = 0.75 = 0.75 m36 Vessel Diameter T = 1 = 1.00 m6 Agitator diameter D = 0.50 = 0.5 m

Agitation rpm N = 140 rpm = 2.33 rps

l = 1.5 m 1500 Verify Overhang Length

No of Impellers n = 1 Choose final RPM, No. of Agitators as per calculation / process

CalculationPower Requirement

Power Number Np = 1.03 (Refer Refernce Data)Power Required P = 0.611 hpGland Loss (10%) = 0.061 hpTransmission loss (20%) = 0.134Total requirement P = 0.81 hpRounding to P = 1.00 hpSelected Motor HP 2 HPAgitator shaft diameterSelect shaft MOC = SS316 LPermissible shear stress, fs = 35.9 N/mm2Elastic limit , f = 260 N/mm2Modulus of Elasticity, E = 210000 N/mm2

Output Torque, Tc = 101819.84 N-mmMax. torque, Tm = 152729.75 N-mmPolar modulus of section of c/s , Zp = 4254.3107

= 21678.016d = 27.88 mm

= 815 NBending moment, M = 1221838 N-mmEquivalent bending moment, Me = 1226592 N-mmElastic limit, f = 577

Overhang of agitator between shaft bearing & agitator

mm3

(d)3 mm3

Force acting on radius from the axis of agitator shaft, Fm

N/mm2

Enter agitator dia in 'mm'

Elastic limit is greater than permissible limit,Change agitator diameter, d

d = 45 mmElastic limit, f = 137

Elastic limit is within permissible limit

Deflection of Shaft (D):I = 201186.91 mm4D = 22 mm

Critical Speed (Nc):

Nc = 203 rpm

Actual speed as % of critical speed = 68.9 %

Design is SatisfactoryChecked with critical speed.

70 to 130 % of the critical speed.

Summary of Agitator DesignAgitator TypeNo. of Impellers 1Agitator Sweep Diameter. - Top Impeller 0.00 m Agitator Sweep Diameter. - Centre Impeller 0.00 m Agitator Sweep Diameter - Bottom Impeller 0.50 m Agitator Speed 140.00 RPMPumping Rate (Q =0.785 x Teq x Teq x Vc) 0.232 m3/sTip Speed 221 m/min 3.69 m/secCalculated Motor HP 1.00 HP 2.00 hp Enter selected motor HPAgitator Shaft Diameter (d) 45 mmShaft Deflection 22 mmCritical Speed 203 rpm

Calculated SelectedMotor RPM 1440 1440Motor HP 1 1Gearbox Reduction Ratio 10 19.35Gearbox Model Model: AS 30 P 15.37 P90 B5 B3

N/mm2

Note: Actual speed of agitator should be 40 to 65 % of the critical speed and should not be

Enter agitator dia in 'mm'

Gearbox Output Torque 148 See gearbox specsGearbox Service factor 1.8 See gearbox specsGearbox Output Shaft Diameter 30 mm See gearbox specsAgitator Drive Shaft Length 400 400 mmAgitator Drive Shaft Diameter 40 mm 40 mmFlexible Coupling -GB and Ag. Shaft To be selectedAgitator Shaft Diameter (d) 45 mm 45 mmAgitator Shaft Length 800 mm 800 mmFlange Diameter of Rigid Coupling 101.25 mm 100 mmThickness of Rigid Coupling Flange 15 15 mmDiameter of Rigid Coupling Hub 60.75 75 mmHeight of Rigid Coupling Hub 75.75 100 mmImpeller Hub Diameter 78.75 100 mmImpeller Hub Height 101.25 100 mmImpeller Mounting Plate Length 78.75 100 mmImpeller Mounting Plate Width 101.25 100 mmImpeller Mounting Plate Thickness 12 0 mmTop Impeller Length 0 0 mmTop Impeller Width 0 0 mm (High Solidity Hydrofoil)Top Impeller Thickness 0 0 mmCentral Impeller Length 0 0Central Impeller Width 0 0Central Impeller Thickness 0 0Bottom Impeller Length 210.625 225Bottom Impeller Width 211 200 (High Solidity Hydrofoil)Bottom Impeller Thickness 10 12Type of Seal Double Mechanical Seal

Costing Sheet for Agitator

No Dim-2/Dia. Qty

MOC (mm) (mm) mm kg

Motor 2 HP,1440 NFLP BBL 50 12500 1Gearbox Model: AS 30 P 15.37 P90 B5 B3 100 20000 1Agitator Drive Shaft SS316L 400 40 4 260 1Agitator Shaft SS316L 800 45 10 260 1Agitator Hub Top SS316L 0 45 100 0 260 1Agitator Middle Hub SS316L 0 45 100 0 260 1Agitator Hub Bottom SS316L 65 45 100 3 260 1Impeller Mounting Plate - Top, Centre SS316L 100 100 0 0.00 260 4

DIM-1 / Height

Height/Thickness

Starting

Weight

Rate/ unit

Impeller Mounting Plate - Bottom SS316L 100 100 0 0 260 4Impeller - top SS316L 0 0 0 260 4Impeller - Centre SS316L 500 12 0 260 4Impeller -; bottom SS316L 225 200 12 4 260 4Bearing Housing, Drive Stool IS2062 80 100 1Bearings 15000 1Double Mechanical Seal 50000 1Lovejoy - Pin Bush Coupling 5000 1Internal Rigid Coupling SS 316 L 9 300 2Total Material Cost 260Misc - Hardwares, Seals 10% 26Manufacturing & Assembly (25% of Material Cost) 25%Total - Material + LaborOH&P 1.3Negotiation Margin 10.00%Comission 5.00%Packing & ForwardingTotal

To Quot-

Scale of Agitation : 1 - Very Gentle to 10:Vigorous

Reference Data

NpPower No.

26.49 ft3 1 Pitched blade (P-4) 1.3739.37 in 1000 mm 2 Pitched blade (P-6) 1.719.69 in 500 mm 3 Straight blade (S-4) 2.96

140.00 250 4 Straight blade (S-6) 3.86

Verify Overhang Length 5 Disc type (D-6) 5.5

Choose final RPM, No. of Agitators as per calculation / process 6 Anchor 57 Curved blade (P-6) 4.88 Straight blade(P-2) 1.79 Propeller (3 blade) 0.32

10 Narrow Hydrofoil 0.311 Wide Hydrofoil 1.03

Elastic Limit (f) Shear Stress (fs)Young's Modulus (E)N/mm2 N/mm2 N/mm2

Carbon Steel 240 37.2 210000SS304 260 40 210000SS304L 260 35.2 210000SS316 260 41.4 210000

SS316 L 260 35.9 210000

Match 5

70

(Rs)

12500 (Actual -11520)20000 (Actual -10500)

10252596

0 -10

6770

Raw Material Cost (Actual)

000

44938000

1500030000

50005369

1046601046628782

143908187080

187089354

215142

225000

Reference Data

Nq Sweep Diameter Tip Speed (m/min)Flow. No. Min Max Min Max

0.79 0.5 0.7 200 300

0.7

0.72 0.66 0.75

0.9 0.950.72

0.5 0.70.6 0.25 0.33

0.55 0.4 0.5 200 3000.73 0.4 0.5 200 300

Design of Agitator8 Batch Vol V = 4 = 0.006 Vessel Dia T = 1.5 = 0.006 Agitator d D = 0.6 = 0

Agitation N = 175 rpm = 2.92

l = 3 m 3000

No of Agita n = 2

Properties of reactor contentsDensity ℓ = 1010 kg/m3Viscosity µ = 1 cp = 0.001

Agitator Data1 Agitator Type

Calculation

Power Num Np = 1.37Power Req P = 7.257 hpGland Loss (10%) = 0.726 hpTransmission loss (20%) = 1.597Total requ P = 9.58 hpRounding t P = 10.00 hp

Agitator shaft diameterSelect shaft MOC = SS304Permissible shear stress, fs = 40 N/mm2Elastic limit , f = 260 N/mm2Modulus of Elasticity, E = 210000 N/mm2

Output Torque, Tc = 407279.3 N-mmMax. torque, Tm = 610919 N-mmPolar modulus of section of c/s , Zp = 15272.98

= 77824.08

Overhang of agitator between shaft bearing & agitator

Power Requirement

mm3

(d)3 mm3

chemjunction.com

d = 42.69 mm

= #DIV/0! NBending moment, M = #DIV/0! N-mmEquivalent bending moment, Me = #DIV/0! N-mmElastic limit, f = #DIV/0!

#DIV/0!

d = 120 mmElastic limit, f = #DIV/0!

#DIV/0!

Deflection of Shaft (D):I = 10173600 mm4D = #DIV/0! mm

Critical Speed (Nc):

Nc = #DIV/0! rpm

Actual speed as % of critical speed = #DIV/0! %

#DIV/0!#DIV/0!

70 to 130 % of the critical speed.

Force acting on radius from the axis of agitator shaft, Fm

N/mm2

N/mm2

Note: Actual speed of agitator should be 40 to 65 % of the critical speed and should not be

Enter agitator dia in 'mm'

m3 0.00 ft3 1m 0 in 0 mm 2m 0 in 0 mm 3rps 175 0 4

5

6789

kg/m s 1011

Elastic Limit (f) Shear Stress (fs) Young's Modulus (E)N/mm2 N/mm2 N/mm2

Carbon Steel 240 37.2 210000SS304 260 40 210000SS304L 260 35.2 210000SS316 260 41.4 210000

SS316 L 260 35.9 210000

Match 2

70

Pitched blade (P-4) 1.37Pitched blade (P-6) 1.7Straight blade (S-4) 2.96Straight blade (S-6) 3.86

Disc type (D-6) 5.5

Anchor 5Curved blade (P-6) 4.8Straight blade(P-2) 1.7Propeller (3 blade) 0.32Narrow Hydrofoil 0.3Wide Hydrofoil 1.03