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The Distillate flowrate from Distillation Column is the amount of moles of condensed top product (distillate) flowing out from the column per unit time. Check FAQs
D=W⋅xW-xFxF-xD
D - Distillate Flowrate?W - Residue Flowrate from Distillation Column?xW - Mole Fraction of More Volatile Comp in Residue?xF - Mole Fraction of More Volatile Component in Feed?xD - Mole Fraction of More Volatile Comp in Distillate?

Total Distillate Flowrate of Distillation Column from Overall and Component Material Balance Example

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Here is how the Total Distillate Flowrate of Distillation Column from Overall and Component Material Balance equation looks like with Values.

Here is how the Total Distillate Flowrate of Distillation Column from Overall and Component Material Balance equation looks like with Units.

Here is how the Total Distillate Flowrate of Distillation Column from Overall and Component Material Balance equation looks like.

4.3455Edit=6Edit⋅0.2103Edit-0.5Edit0.5Edit-0.9Edit
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Total Distillate Flowrate of Distillation Column from Overall and Component Material Balance Solution

Follow our step by step solution on how to calculate Total Distillate Flowrate of Distillation Column from Overall and Component Material Balance?

FIRST Step Consider the formula
D=W⋅xW-xFxF-xD
Next Step Substitute values of Variables
∴ D=6mol/s⋅0.2103-0.50.5-0.9
Next Step Prepare to Evaluate
∴ D=6⋅0.2103-0.50.5-0.9
LAST Step Evaluate
∴D=4.3455mol/s

Total Distillate Flowrate of Distillation Column from Overall and Component Material Balance Formula Elements

Variables
Distillate Flowrate
The Distillate flowrate from Distillation Column is the amount of moles of condensed top product (distillate) flowing out from the column per unit time.
Symbol: D
Measurement: Molar Flow RateUnit: mol/s
Note: Value should be greater than 0.
Formulas to find Distillate FlowrateOpen Variable
Residue Flowrate from 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.
Symbol: W
Measurement: Molar Flow RateUnit: mol/s
Note: Value should be greater than 0.
Formulas to find Residue Flowrate from Distillation ColumnOpen Variable
Mole Fraction of More Volatile Comp in Residue
The Mole Fraction of More Volatile comp in Residue of Distillation Column is the mole fraction of More Volatile Component in the residue stream of distillation column.
Symbol: xW
Measurement: NAUnit: Unitless
Note: Value should be between 0 to 1.
Formulas to find Mole Fraction of More Volatile Comp in ResidueOpen Variable
Mole Fraction of More Volatile Component in Feed
The Mole Fraction of More Volatile component in Feed of Distillation Column is the mole fraction of More Volatile Component in the feed stream of distillation column.
Symbol: xF
Measurement: NAUnit: Unitless
Note: Value should be between 0 to 1.
Formulas to find Mole Fraction of More Volatile Component in FeedOpen Variable
Mole Fraction of More Volatile Comp in Distillate
The Mole Fraction of More Volatile comp in Distillate of Distillation Column is the mole fraction of More Volatile Component in the distillate stream of distillation column.
Symbol: xD
Measurement: NAUnit: Unitless
Note: Value should be between 0 to 1.
Formulas to find Mole Fraction of More Volatile Comp in DistillateOpen Variable

Other Formulas to find Distillate Flowrate

​Go Total Distillate Flowrate of Distillation Column from Overall Material Balance
D=F-W
​Go Total Distillate Flowrate of Distillation Column from Overall Component Material Balance
D=F⋅xF-W⋅xWxD

Other formulas in Material Balance category

​Go Total Feed Flowrate of Distillation Column from Overall Material Balance
F=D+W
​Go Total Residue Flowrate of Distillation Column from Overall Material Balance
W=F-D
​Go Mole Fraction of MVC in Feed from Overall Component Material Balance in Distillation
xF=D⋅xD+W⋅xWF
​Go Mole Fraction of MVC in Distillate from Overall Component Material Balance in Distillation
xD=F⋅xF-W⋅xWD

How to Evaluate Total Distillate Flowrate of Distillation Column from Overall and Component Material Balance?

Total Distillate Flowrate of Distillation Column from Overall and Component Material Balance evaluator uses Distillate Flowrate = Residue Flowrate from Distillation Column*(Mole Fraction of More Volatile Comp in Residue-Mole Fraction of More Volatile Component in Feed)/(Mole Fraction of More Volatile Component in Feed-Mole Fraction of More Volatile Comp in Distillate) to evaluate the Distillate Flowrate, The Total Distillate Flowrate of Distillation Column from Overall and Component Material Balance formula is defined as Distillate Flowrate coming out from the distillation column calculated as per Overall and Component Material Balance Equations. Distillate Flowrate is denoted by D symbol.

How to evaluate Total Distillate Flowrate of Distillation Column from Overall and Component Material Balance using this online evaluator? To use this online evaluator for Total Distillate Flowrate of Distillation Column from Overall and Component Material Balance, enter Residue Flowrate from Distillation Column (W), Mole Fraction of More Volatile Comp in Residue (xW), Mole Fraction of More Volatile Component in Feed (xF) & Mole Fraction of More Volatile Comp in Distillate (xD) and hit the calculate button.

FAQs on Total Distillate Flowrate of Distillation Column from Overall and Component Material Balance

What is the formula to find Total Distillate Flowrate of Distillation Column from Overall and Component Material Balance?
The formula of Total Distillate Flowrate of Distillation Column from Overall and Component Material Balance is expressed as Distillate Flowrate = Residue Flowrate from Distillation Column*(Mole Fraction of More Volatile Comp in Residue-Mole Fraction of More Volatile Component in Feed)/(Mole Fraction of More Volatile Component in Feed-Mole Fraction of More Volatile Comp in Distillate). Here is an example- 6 = 6*(0.2103-0.5)/(0.5-0.9).
How to calculate Total Distillate Flowrate of Distillation Column from Overall and Component Material Balance?
With Residue Flowrate from Distillation Column (W), Mole Fraction of More Volatile Comp in Residue (xW), Mole Fraction of More Volatile Component in Feed (xF) & Mole Fraction of More Volatile Comp in Distillate (xD) we can find Total Distillate Flowrate of Distillation Column from Overall and Component Material Balance using the formula - Distillate Flowrate = Residue Flowrate from Distillation Column*(Mole Fraction of More Volatile Comp in Residue-Mole Fraction of More Volatile Component in Feed)/(Mole Fraction of More Volatile Component in Feed-Mole Fraction of More Volatile Comp in Distillate).
What are the other ways to Calculate Distillate Flowrate?
Here are the different ways to Calculate Distillate Flowrate-
  • Distillate Flowrate=Feed Flowrate to Distillation Column-Residue Flowrate from Distillation ColumnOpenImg
  • Distillate Flowrate=(Feed Flowrate to Distillation Column*Mole Fraction of More Volatile Component in Feed-Residue Flowrate from Distillation Column*Mole Fraction of More Volatile Comp in Residue)/Mole Fraction of More Volatile Comp in DistillateOpenImg
Can the Total Distillate Flowrate of Distillation Column from Overall and Component Material Balance be negative?
No, the Total Distillate Flowrate of Distillation Column from Overall and Component Material Balance, measured in Molar Flow Rate cannot be negative.
Which unit is used to measure Total Distillate Flowrate of Distillation Column from Overall and Component Material Balance?
Total Distillate Flowrate of Distillation Column from Overall and Component Material Balance is usually measured using the Mole per Second[mol/s] for Molar Flow Rate. Kilomole per Second[mol/s], Dekamole per Second[mol/s], Mole per Minute[mol/s] are the few other units in which Total Distillate Flowrate of Distillation Column from Overall and Component Material Balance can be measured.
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