agitator-power-requirement-and-mixing-intensity-calculation.xls

Reactor Geometry 4

Diameter of the reactor

T

=

50.0

4

Height of the cylindrical portion

H

=

80.0

4

Liquid level height in the reactor from bottom



=

!0.0

"

=

#.8

 Total  Total "olume "olume of the reactor reactor

$

Select the type of Agitator

4

D'T (atio )gitator rpm

%itched &lade T 0.5 *

=

$$0

, -

= =

$$00 $00

Diameter of the agitator

D

=

0.

(eynold+ *umber

(e

=

8$ 8$/#

*p

=

$./!

%

=

$.$

%umping *umber

*q

=

0.

quivalent Diameter

Teq

=

5.00

"olumetric o rate

6

=

7.7

ro++ +ectional area

)

=

$/.

"elocity

"

=

0.!#7

= =

# $ 40

Fluid Properties Den+ity "i+co+ity

Calculation 1) Reynolds Number

2)Poer Re!uirement %oer *umber %oer (equired 1)++uming 802 Loading3

") #i$ing %ntensity

&) Agitator re!uired *o of )gitator+ (equired 'T

&) Agitator re!uired *o of )gitator+ (equired 'T

= =

# $.40

in in in

m/

 

rbine

rpm

9g'm/ cp

m

Select the 'alue from Poer number chart based on Reynolds number hp

(se * for Rushton si$ blade turbine + "*2 for conca'e 1,- degree turbine

Select the 'alue from Pumping number chart based on Reynolds number ft

(se -*.2 for Rushton si$ blade turbine + -*. for conca'e 1,- degree turbine

ft/'+ec ft# lic9 here ft'+ec

lic9 Here

lic9 Here

0.#5 0./ 0.4 0.5

hemineer HD/ :ide Hydrofoil %itched &lade Turbine (u+hton  &lade Turbine $80 Degree oncave

:ide Hydrofoil

%itched &lade turbine

$80 degre

 

concave

&ac9 to data +heet

&ac9 to data +heet

%oer *umber *arro Hydrofoil 0.8 %oer *o

Poer Number Cur'e for

(eynold+ *o

D'T=0.#5

D'T=0./

D'T=0.4

D'T=0.5

$00 #00 0. /00 500 800 0.5 $#00 /000 0.4 $0000

0.!/ 0.5/ 0.4! 0.4$ 0./8 0./ 0.// 0.//

0.!$ 0.5# 0.45 0./7 0./! 0./4 0./# 0./#

0.7 0.47 0.4# 0./! 0./4 0./# 0./ 0.#7

0.8 0.4 0.4 0./5 0./# 0./ 0.#8 0.#!

0.!

  r   e    b   m   u    N   r   e      o    P

0./

0.#

0.$

0 $00

$$00

#$00

/$00 D'T = 0.#5

4$00

5$00

$00

D'T =Reynolds 0./ D'T = 0.4 Number

!

hemineer /0"

00 'T = 0.5

8$00

7$00

$0$00

$$$00

:ide Hydrofoil %oer *o (eynold+ *o #.5

$00 #00 /00 # 500   r 800   e    b $.5 $#00   m   u/000    N   r$0000 $   e

Poer Number Cur'e f

D'T=0.#5

D'T=0./

D'T=0.4

D'T=0.5

#.#8 $.!8 $.5 $./ $.$4 $.07 $.0 $.0

#.#4 $.!5 $.5/ $.#7 $.$# $.08 $.05 $.05

#.$5 $.7 $.48 $.#4 $.07 $.05 $ $

#.$$ $.5 $.45 $.#/ $.08 $.0/ 0.78 0.78

     o    P

0.5

0 $00

$$00

#$00

/$00 D'T=0.#5

4$00

5$00

Nu D'T=0./ Reynolds D'T=0.4

r ide /ydrofoil

$00

!$00

mber D'T=0.5

8$00

7$00

$0$00

$$$00

Poer Number cur'e f

%itched &lade #.5

%oer *o (eynold+ # *o $00   r #00   e $.5    b /00   m 500   u    N 800   r   e $#00 $      o /000    P $0000

D'T=0.#5

D'T=0./

D'T=0.4

D'T=0.5

#.$4 $.!5 $. $.4 $./8 $./! $./! $./!

#.$4 $.!5 $. $.4 $./8 $./! $./! $./!

#.$4 $.!5 $. $.4 $./8 $./! $./! $./!

#.$4 $.!# $. $.4 $./8 $./! $./! $./!

0.5

0 $00

$$00

#$00

/$00

4$00

5$00

$

Reynolds Num

r Pitched blade turbine

D'T=0. #5 D'T=0. /

00 ber

!$00

8$00

7$00

$0$00

$$$00

Rushton  3lade (eynold+ *o $00 #00 /00 500 800 $#00 /000 $0000

D'T=0.#5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5

%oer *o D'T=0./ D'T=0.4 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5

D'T=0.5 5.5 5.4 5.5 5.5 5.5 5.5 5.5 5.5

%oer *o D'T=0./ D'T=0.4 /. /. /.# /.# /.# /.# /.# /.# /.# /.# /.# /.# /.# /.# /.# /.#

D'T=0.5 /. /.$5 /.# /.# /.# /.# /.# /.#

1,- 4egree Conca'e (eynold+ *o $00 #00 /00 500 800 $#00 /000 $0000

D'T=0.#5 /. /.# /.# /.# /.# /.# /.# /.#

Chemineer /0" (eynold+ 0. *o $00 #00 0.5 /00 500   r 0.4   e 800    b   m $#00   u    N /000 0./   g $0000   n    i   p   m   u    P

Pumping Number c

D'T=0.#5 0.// 0./4 0./ 0./8 0.4/ 0.45 0.5$ 0.5!

%oer *o D'T=0./ D'T=0.4 0./$ 0./ 0.// 0./# 0./5 0./4 0./ 0./ 0.4# 0.4$ 0.44 0.4/ 0.4! 0.45 0.55 0.5/

D'T=0.5 0./ 0./# 0./4 0./5 0./7 0.4$ 0.44 0.5$

0.#

0.$

0 $00

$$00

#$00

/$00

4$00

5$00 Reynolds Nu

ur'e for /0" %mpeller

D'T=0. #5 D'T=0. /

$00 ber

!$00

8$00

7$00

$0$00

$$$00

ide /ydrofoil

  r   e    b   m   u    N   g   n    i   p   m   u    P

(eynold+ 0.7 *o $00 0.8 #00 /00 0.! 500 800 0. $#00 /000 $0000 0.5

Pumping Number cur %oer *o D'T=0.#5 0.44 0.54 0.58 0.4 0.! 0.!$ 0.!! 0.8

D'T=0./ 0.4$ 0.48 0.5$ 0.5! 0. 0.# 0.7 0.!/

D'T=0.4 0./ 0.4/ 0.45 0.5$ 0.54 0.5! 0.# 0./

D'T=0.5 0./5 0.4 0.4/ 0.4 0.48 0.5 0.55 0.5

Pitched 3lade

0.4

%oer *o (eynold+ *o D'T=0.#5 D'T=0./ D'T=0.4 D'T=0.5 $00 0.45 0.4# 0./! 0./ 0.# #00 0.55 0.5 0.45 0.4$ /00 0. 0.54 0.48 0.44 0.$ 500 0. 0.$ 0.54 0.4! 800 0.! 0.5 0.5! 0.5 0 $#00 0.!4 0.! 0. 0.5# $00 $$00 #$00 /$00 4$00 $0 /000 0.8# 0.!5 0. 0.5! 5$00 $0000 0.88 0.8 0.8 0. Reynolds Numb 0./

e for ide /ydrofoil

D'T=0. #5 D'T=0. /

!$00 r

8$00

7$00

$0$00

$$$00

Pitched 3lade $ (eynold+ *o 0.7 $00 #000.8 /00 0.!   r500   e    b8000.   m $#00   u    N 0.5 /000   g   n $0000    i 0.4   p   m   u    P

Pumping Num

D'T=0.#5 0.45 0.55 0. 0. 0.! 0.!4 0.8# 0.88

%oer *o D'T=0./ D'T=0.4 0.4# 0./! 0.5 0.45 0.54 0.48 0.$ 0.54 0.5 0.5! 0.! 0. 0.!5 0. 0.8 0.8

D'T=0.5 0./ 0.4$ 0.44 0.4! 0.5 0.5# 0.5! 0.

0./ 0.# 0.$ 0 $00

$$00

#$00

/$00

4$00

5$00 Reynolds N

ber cur'e for P35

D'T=0. #5 D'T=0. /

$00  

mber

!$00

8$00

7$00

$0$00

$$$00

Rushton  blade (eynold+ *o $00 #00 /00 500 800 $#00 /000 $0000

D'T=0.#5 0.! 0.!# 0.!# 0.!# 0.!# 0.!# 0.!# 0.!#

%oer *o D'T=0./ D'T=0.4 0.! 0.! 0.!# 0.!# 0.!# 0.!# 0.!# 0.!# 0.!# 0.!# 0.!# 0.!# 0.!# 0.!# 0.!# 0.!#

D'T=0.5 0.! 0.!# 0.!# 0.!# 0.!# 0.!# 0.!# 0.!#

D'T=0./ 0.8 0.! 0.! 0.! 0.! 0.! 0.! 0.!

D'T=0.5 0.8 0.! 0.! 0.! 0.! 0.! 0.! 0.!

1,- 4egree Conca'e (eynold+ *o $00 #00 /00 500 800 $#00 /000 $0000

%oer *o D'T=0.#5 0.8 0.! 0.! 0.! 0.! 0.! 0.! 0.!

D'T=0.4 0.8 0.! 0.! 0.! 0.! 0.! 0.! 0.!