# Pan Section Vapour Header and Pan vapour Line Dia Calculation

## Pan Section Vapour Header and Pan vapour Line Dia with Online Calculator

### Pan Section Vapour Header Dia :

#### Required Data For Calculation:

a) Crushing Rate in TCH

b) A m/c % cane (To be taken percentage of massecuite boiled on that particular bleed vapour).

(For example while calculating the 2nd bleed vapour header for pans , choose how may pans boiled on 2nd vapour according to that consider the percentage of massecuite )

c) B m/c % cane (To be taken percentage of  massecuite boiled on that particular bleed vapour).

(For example consider total B massecuite boiled on 3rd vapour bleeding than calculating the 2nd bleed vapour header for pans, choose percentage of massecuite is zero in calculator)

d) C m/c % cane (To be taken percentage of  massecuite boiled on that particular bleed vapour).

e) Temperature of input vapour in oC

f) Velocity of inlet vapour in m/sec (Taken as per bleed vapour from evaporator body)

g) Specific steam consumption for A massecuite  in ton of vapour per ton of m/c  ( For A m/c it is having 0.4 to 0.55)

h) B massecuite Specific steam consumption in ton of vapour per ton of m/c  ( For B m/c it is having 0.35 to 0.4)

i) Specific steam consumption for C massecuite in ton of vapour per ton of m/c  ( For C m/c it is having 0.30 to 0.35)

j) Specific volume of vapour in M3/kg ( Taken from Steam table for the particular temperature)

#### Formulas for calculation:

a) Vapour requirement for massecuite boiling in Ton/hr = ( TCH x massecuite % cane x   Steam consumption of vapour)/100

b) Total vapour Requirement in T/hr = ( Vapour requirement for A m/c boiling + Vapour requirement for B m/c boiling + Vapour requirement for C m/c boiling )

c) Total vapour requirement to be covert into M3/sec by the multiplying the specific volume of vapour

d) Dia of vapour Line header = SQRT [Volume of vapour / (0.785 x Velocity of vapour) ]

(SQRT – Square root)

### Pan Vapour Inlet and Out Line Dia:

#### Required Data For Calculation:

a) Heating surface of the pan in m2

b) Evaporation rate of the pan in Kg/ m2/hr ( Take maximum value for calculating the vapour lines)

c) Pan Inlet Vapour Temperature in oC (Taken from evaporator bleed vapour temperature)

d) Pan Outlet Vapour Temperature in oC ( It is having 50oC to 60oC)

e) Inlet Vapour velocity  of Pan in m/sec (Taken from evaporator bleed vapour velocity)

f) Pan Outlet Vapour Velocity in m/sec ( It is having 50 to 60 m/sec)

g) Specific volume of Pan inlet vapour ( Taken from Steam table for the particular temperature)

h) Specific volume of Pan Outlet vapour ( Taken from Steam table for the particular temperature)

##### As Per Hugot given Evaporation Rate of pans
Maximum Minimum
Kg/m2/hr Lb/Ft2/hr Kg/m2/hr Lb/Ft2/hr
Footing 85 17.5 17 3.5
A massecuite 71 14.6 32 6.6
B massecuite 46 9.4 11 2.2
C massecuite
36 7.5 1.7 0.34

#### Formulas for calculation:

Volume of the vapour in M3/sec = (Heating surface x evaporation rate of the pan x Specific volume of vapour /3600 )

Dia of vapour Line = SQRT [Volume of vapour / (0.785 x Velocity of vapour) ]

Pan Vapour Line Dia Online Calculator

Pan Section Vapour Header Online Calculator

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## 8 thoughts on “Pan Section Vapour Header and Pan vapour Line Dia Calculation”

#### sudhir Kumar Tripathi

(November 16, 2017 - 7:35 am)

Refinery clearification

#### BAL kishore

(December 1, 2017 - 1:12 pm)

#### siva alluri

(December 3, 2017 - 4:30 pm)

Generally it will take 2 to 2.2m/sec velocity

#### BAL kishore

(December 11, 2017 - 9:40 am)

Thanku sir

#### umakant kande

(May 23, 2021 - 11:00 am)

very much thanku sir

#### Kumar

(September 12, 2023 - 8:34 am)