Boil-Up Ratio Calculator

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

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Boil-Up Ratio Solution

STEP 0: Pre-Calculation Summary

Formula Used

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

Variables Used

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.
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.
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 Flowrate to the Distillation Column: 11.2 Mole per Second --> 11.2 Mole per Second 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

R_v = V/W --> 11.2/6

Evaluating ... ...

R_v = 1.86666666666667

STEP 3: Convert Result to Output's Unit

1.86666666666667 --> No Conversion Required

FINAL ANSWER

1.86666666666667 ≈ 1.866667 <-- Boil-Up Ratio

(Calculation completed in 00.004 seconds)

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Created by Vaibhav Mishra

DJ Sanghvi College of Engineering (DJSCE), Mumbai

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< Continuous Distillation Calculators

Murphree Efficiency of Distillation Column Based on Vapour Phase

LaTeX 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

Liquid Reflux Flowrate based on External Reflux Ratio

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

External Reflux Ratio

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

Overall Efficiency of Distillation Column

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

< Important Formulas in Distillation Mass Transfer Operation Calculators

Feed Q-Value in Distillation Column

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

External Reflux Ratio

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

Internal Reflux Ratio

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

Boil-Up Ratio

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

Boil-Up Ratio Formula

LaTeX Go

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

Boil-Up Ratio calculator uses Boil-Up Ratio = Boil-Up Flowrate to the Distillation Column/Residue Flowrate from Distillation Column to calculate the Boil-Up Ratio, The Boil-Up Ratio formula is defined as the ratio of the moles of vapour leaving the reboiler back into the distillation column to the moles of liquid drawn out as bottom product from the distillation column. Boil-Up Ratio is denoted by R_v symbol.

How to calculate Boil-Up Ratio using this online calculator? To use this online calculator for Boil-Up Ratio, enter Boil-Up Flowrate to the Distillation Column (V) & Residue Flowrate from Distillation Column (W) and hit the calculate button. Here is how the Boil-Up Ratio calculation can be explained with given input values -> 1.866667 = 11.2/6.

FAQ

What is Boil-Up Ratio?

The Boil-Up Ratio formula is defined as the ratio of the moles of vapour leaving the reboiler back into the distillation column to the moles of liquid drawn out as bottom product from the distillation column and is represented as R_v = V/W or Boil-Up Ratio = Boil-Up Flowrate to the Distillation Column/Residue Flowrate from Distillation Column. The Boil-Up Flowrate to the Distillation Column is the vapour's molar flowrate, leaving the reboiler back into the distillation column & 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 Boil-Up Ratio?

The Boil-Up Ratio formula is defined as the ratio of the moles of vapour leaving the reboiler back into the distillation column to the moles of liquid drawn out as bottom product from the distillation column is calculated using Boil-Up Ratio = Boil-Up Flowrate to the Distillation Column/Residue Flowrate from Distillation Column. To calculate Boil-Up Ratio, you need Boil-Up Flowrate to the Distillation Column (V) & Residue Flowrate from Distillation Column (W). With our tool, you need to enter the respective value for Boil-Up Flowrate to the Distillation Column & 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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