Agitator design:

According to our process condition we use turbine mixture with 6-blade & 4-baffles agitator

Shape factors are as follow: [33]

S1 = D t

Da

S1 = Shape factor

Dt = Total diameter of tank

Da = Diameter of agitator

S1 = 3

Dt = 2.484 m

Da = ?

3 = 2.484Da

Da ¿2.4843

Da = 0.828 m

S2=¿¿ CDa

C = Clearance between agitator & tank wall

1 = CDa

C = 1 ¿Da

C = 1 ¿ 0.828

C = 0.828 m

S3=¿¿ LDa

L = length of the agitator

S3=¿¿ 0.25

S3=¿¿ L

0.828

0.25 = L

0.828

L= 0.25 ¿ 0.828

L = 0.207 m

S4=¿¿ WDa

W = width of the agitator

S4=¿¿ 0.2

0.2= W0.828

W = 0.2 ¿ 0.828

W =0.1656 m

To find the power of the motor [33]

Power = T ip N3Da5 ρ

N = T ip velocity

π∗D a

T ip = 10 – 20 fts [19]

This velocity is for liquid –liquid mixture & reaction with heat transfer

So we take average velocity as

T ip Velocity = 15 fts

T ip Velocity = 4.6 ms

N = 4.6

3.14∗0.828

N =1.7693 revs

N =106.2 revmin

Power = T ip N3Da5 ρavg

ρavg=¿ 789+897+1000

3

ρavg=¿ 895.3 kg

m3

KT = 1.65 from table 12.7 [33]

By putting the values

Power = 1.65 ¿ (1.7693)3 ¿ (0.828)5 ¿ 895.3

Power = 3184.261 watt

Power = 3.184261 ×103 watt