Vapor Reflux based on Boil-Up Ratio Calculator

✖The Boil-Up Ratio is defined as the ratio of molar flowrate of vapour leaving the reboiler back into the column to the molar flowrate of liquid drawn out as bottom product.ⓘ Boil-Up Ratio [R_v]			+10% -10%
✖The Residue flowrate from Distillation Column is the amount of moles of bottom liquid product (Residue) flowing out from the column per unit time.ⓘ Residue Flowrate from Distillation Column [W]			+10% -10%

✖The Boil-Up Flowrate to the Distillation Column is the vapour's molar flowrate, leaving the reboiler back into the distillation column.ⓘ Vapor Reflux based on Boil-Up Ratio [V]

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Formula

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Vapor Reflux based on Boil-Up Ratio

Formula

`"V" = "R"_{"v"}*"W"`

Example

`"11.16mol/s"="1.86"*"6mol/s"`

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Vapor Reflux based on Boil-Up Ratio Solution

STEP 0: Pre-Calculation Summary

Formula Used

Boil-Up Flowrate to the Distillation Column = Boil-Up Ratio*Residue Flowrate from Distillation Column
V = R_v*W
This formula uses 3 Variables

Variables Used

Boil-Up Flowrate to the Distillation Column - (Measured in Mole per Second) - The Boil-Up Flowrate to the Distillation Column is the vapour's molar flowrate, leaving the reboiler back into the distillation column.
Boil-Up Ratio - The Boil-Up Ratio is defined as the ratio of molar flowrate of vapour leaving the reboiler back into the column to the molar flowrate of liquid drawn out as bottom product.
Residue Flowrate from Distillation Column - (Measured in Mole per Second) - The Residue flowrate from Distillation Column is the amount of moles of bottom liquid product (Residue) flowing out from the column per unit time.

STEP 1: Convert Input(s) to Base Unit

Boil-Up Ratio: 1.86 --> No Conversion Required
Residue Flowrate from Distillation Column: 6 Mole per Second --> 6 Mole per Second No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

V = R_v*W --> 1.86*6

Evaluating ... ...

V = 11.16

STEP 3: Convert Result to Output's Unit

11.16 Mole per Second --> No Conversion Required

FINAL ANSWER

11.16 Mole per Second <-- Boil-Up Flowrate to the Distillation Column

(Calculation completed in 00.004 seconds)

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DJ Sanghvi College of Engineering (DJSCE), Mumbai

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< 13 Continuous Distillation Calculators

Minimum Number of Distillation Stages by Fenske's Equation

Go Minimum Number of Stages = ((log10((Mole Fraction of More Volatile Comp in Distillate*(1-Mole Fraction of More Volatile Comp in Residue))/(Mole Fraction of More Volatile Comp in Residue*(1-Mole Fraction of More Volatile Comp in Distillate))))/(log10(Average Relative Volatility)))-1

Murphree Efficiency of Distillation Column Based on Vapour Phase

Go Murphree Efficiency of Distillation Column = ((Average Mole Fraction of Vapour on Nth Plate-Average Mole Fraction of Vapour at N+1 Plate)/(Average Mole Fraction at Equilibrium on Nth Plate-Average Mole Fraction of Vapour at N+1 Plate))*100

Feed Q-Value in Distillation Column

Go Q-value in Mass Transfer = Heat Required to Convert Feed to Saturated Vapor/Molal Latent Heat of Vaporization of Saturated Liq

Internal Liquid Reflux Flowrate based on Internal Reflux Ratio

Go Internal Reflux Flowrate to Distillation Column = Internal Reflux Ratio*Distillate Flowrate from Distillation Column

Liquid Reflux Flowrate based on External Reflux Ratio

Go External Reflux Flowrate to Distillation Column = External Reflux Ratio*Distillate Flowrate from Distillation Column

Distillate Flowrate based on External Reflux Ratio

Go Distillate Flowrate from Distillation Column = External Reflux Flowrate to Distillation Column/External Reflux Ratio

Distillate Flowrate based on Internal Reflux Ratio

Go Distillate Flowrate from Distillation Column = Internal Reflux Flowrate to Distillation Column/Internal Reflux Ratio

External Reflux Ratio

Go External Reflux Ratio = External Reflux Flowrate to Distillation Column/Distillate Flowrate from Distillation Column

Internal Reflux Ratio

Go Internal Reflux Ratio = Internal Reflux Flowrate to Distillation Column/Distillate Flowrate from Distillation Column

Bottom Product based on Boil-up Ratio

Go Residue Flowrate from Distillation Column = Boil-Up Flowrate to the Distillation Column/Boil-Up Ratio

Vapor Reflux based on Boil-Up Ratio

Go Boil-Up Flowrate to the Distillation Column = Boil-Up Ratio*Residue Flowrate from Distillation Column

Boil-Up Ratio

Go Boil-Up Ratio = Boil-Up Flowrate to the Distillation Column/Residue Flowrate from Distillation Column

Overall Efficiency of Distillation Column

Go Overall Efficiency of Distillation Column = (Ideal Number of Plates/Actual Number of Plates)*100

Vapor Reflux based on Boil-Up Ratio Formula

Boil-Up Flowrate to the Distillation Column = Boil-Up Ratio*Residue Flowrate from Distillation Column
V = R_v*W

What is the importance of Reflux Ratio in Distillation Column?

If reflux ratio is reduced (or if distillate rate D is increased compared to L) the more stages are required. Further reduction in Reflux Ratio leads to a point where infinite stages are required. This condition is known as minimum reflux. Any Increase in Reflux ratio above this point gives a workable system, upto the point where the reflux ratio reaches infinity and minimum number of stages are required, this condition is known as Total Reflux.

What is the effect of Reflux Ratio on Distillation Operation?

Distillation process is done to achieve a specific level of enrichment. To achieve this enrichment level, one must specify a reflux ratio. Decreasing that reflux ratio (i.e, increasing D), has an advantage that the duty of condenser and reboiler decreases, since the load in distillation column decreases (more mass goes out as D increases) . In other sense, the operating cost of distillation column decreases. However, it would be at expense of less enrichment achieved than required. Increasing reflux ratio would act in reverse i.e, it would have a disadvantage of increase in duty of condenser and reboiler as load increases. This increases the operation cost of distillation column; however, more enrichment is achieved.

How to Calculate Vapor Reflux based on Boil-Up Ratio?

Vapor Reflux based on Boil-Up Ratio calculator uses Boil-Up Flowrate to the Distillation Column = Boil-Up Ratio*Residue Flowrate from Distillation Column to calculate the Boil-Up Flowrate to the Distillation Column, The Vapor Reflux based on Boil-Up Ratio formula is defined as the product of the Boil-up ratio to the Residue Bottom flowrate from the distillation column. Boil-Up Flowrate to the Distillation Column is denoted by V symbol.

How to calculate Vapor Reflux based on Boil-Up Ratio using this online calculator? To use this online calculator for Vapor Reflux based on Boil-Up Ratio, enter Boil-Up Ratio (R_v) & Residue Flowrate from Distillation Column (W) and hit the calculate button. Here is how the Vapor Reflux based on Boil-Up Ratio calculation can be explained with given input values -> 11.16 = 1.86*6.

FAQ

What is Vapor Reflux based on Boil-Up Ratio?

The Vapor Reflux based on Boil-Up Ratio formula is defined as the product of the Boil-up ratio to the Residue Bottom flowrate from the distillation column and is represented as V = R_v*W or Boil-Up Flowrate to the Distillation Column = Boil-Up Ratio*Residue Flowrate from Distillation Column. The Boil-Up Ratio is defined as the ratio of molar flowrate of vapour leaving the reboiler back into the column to the molar flowrate of liquid drawn out as bottom product & The Residue flowrate from Distillation Column is the amount of moles of bottom liquid product (Residue) flowing out from the column per unit time.

How to calculate Vapor Reflux based on Boil-Up Ratio?

The Vapor Reflux based on Boil-Up Ratio formula is defined as the product of the Boil-up ratio to the Residue Bottom flowrate from the distillation column is calculated using Boil-Up Flowrate to the Distillation Column = Boil-Up Ratio*Residue Flowrate from Distillation Column. To calculate Vapor Reflux based on Boil-Up Ratio, you need Boil-Up Ratio (R_v) & Residue Flowrate from Distillation Column (W). With our tool, you need to enter the respective value for Boil-Up Ratio & Residue Flowrate from Distillation Column and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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