Quality of Feed Based on Liquid Flowrates and Feed Flowrate Calculator

✖Liquid Flowrate in Stripping Section refers to the molar flowrate of liquid traveling through the stripping section of a distillation column.ⓘ Liquid Flowrate in Stripping Section [L_m]			+10% -10%
✖Liquid Flowrate in Rectifying Section refers to the molar flowrate of the liquid component traveling in the rectifying section of distillation column.ⓘ Liquid Flowrate in Rectifying Section [L_n]			+10% -10%
✖Feed Flowrate is defined as the molar flowrate of the feedstock that is sent into a distillation column.ⓘ Feed Flowrate [F]			+10% -10%

✖Feed Quality refers to the composition, properties, and condition of the feedstock entering the distillation column.ⓘ Quality of Feed Based on Liquid Flowrates and Feed Flowrate [q]

⎘ Copy

👎

Formula

✖

Quality of Feed Based on Liquid Flowrates and Feed Flowrate

Formula

`"q" = ("L"_{"m"}-"L"_{"n"})/"F"`

Example

`"1.345079"=("593.357mol/s"-"301.4321mol/s")/"217.0318mol/s"`

Calculator

LaTeX

Reset

👍

Download Process Equipment Design Formula PDF PDF Image

Quality of Feed Based on Liquid Flowrates and Feed Flowrate Solution

STEP 0: Pre-Calculation Summary

Formula Used

Feed Quality = (Liquid Flowrate in Stripping Section-Liquid Flowrate in Rectifying Section)/Feed Flowrate
q = (L_m-L_n)/F
This formula uses 4 Variables

Variables Used

Feed Quality - Feed Quality refers to the composition, properties, and condition of the feedstock entering the distillation column.
Liquid Flowrate in Stripping Section - (Measured in Mole per Second) - Liquid Flowrate in Stripping Section refers to the molar flowrate of liquid traveling through the stripping section of a distillation column.
Liquid Flowrate in Rectifying Section - (Measured in Mole per Second) - Liquid Flowrate in Rectifying Section refers to the molar flowrate of the liquid component traveling in the rectifying section of distillation column.
Feed Flowrate - (Measured in Mole per Second) - Feed Flowrate is defined as the molar flowrate of the feedstock that is sent into a distillation column.

STEP 1: Convert Input(s) to Base Unit

Liquid Flowrate in Stripping Section: 593.357 Mole per Second --> 593.357 Mole per Second No Conversion Required
Liquid Flowrate in Rectifying Section: 301.4321 Mole per Second --> 301.4321 Mole per Second No Conversion Required
Feed Flowrate: 217.0318 Mole per Second --> 217.0318 Mole per Second No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

q = (L_m-L_n)/F --> (593.357-301.4321)/217.0318

Evaluating ... ...

q = 1.34507892391806

STEP 3: Convert Result to Output's Unit

1.34507892391806 --> No Conversion Required

FINAL ANSWER

1.34507892391806 ≈ 1.345079 <-- Feed Quality

(Calculation completed in 00.004 seconds)

You are here -

Home » Engineering » Chemical Engineering » Process Equipment Design » Column Design » Distillation Tower Design » Quality of Feed Based on Liquid Flowrates and Feed Flowrate

Credits

Created by Rishi Vadodaria

Malviya National Institute Of Technology (MNIT JAIPUR ), JAIPUR

Rishi Vadodaria has created this Calculator and 200+ more calculators!

Verified by Vaibhav Mishra

DJ Sanghvi College of Engineering (DJSCE), Mumbai

Vaibhav Mishra has verified this Calculator and 200+ more calculators!

< 25 Distillation Tower Design Calculators

Relative Volatility of Two Components Based on Normal Boiling Point and Latent Heat of Vaporization

Go Relative Volatility = exp(0.25164*((1/Normal Boiling Point of Component 1)-(1/Normal Boiling Point of Component 2))*(Latent Heat of Vaporization of Component 1+Latent Heat of Vaporization of Component 2))

Maximum Allowable Vapor Velocity given Plate Spacing and Fluid Densities

Go Maximum Allowable Vapor Velocity = (-0.171*(Plate Spacing)^2+0.27*Plate Spacing-0.047)*((Liquid Density-Vapor Density in Distillation)/Vapor Density in Distillation)^0.5

Column Diameter given Maximum Vapor Rate and Maximum Vapor Velocity

Go Column Diameter = sqrt((4*Vapor Mass Flowrate)/(pi*Vapor Density in Distillation*Maximum Allowable Vapor Velocity))

Tower Cross Sectional Area given Gas Volumetric Flow and Flooding Velocity

Go Tower Cross Sectional Area = Volumetric Gas Flow/((Fractional Approach to Flooding Velocity*Flooding Velocity)*(1-Fractional Downcomer Area))

Minimum External Reflux given Compositions

Go External Reflux Ratio = (Distillate Composition-Equilibrium Vapor Composition)/(Equilibrium Vapor Composition-Equilibrium Liquid Composition)

Maximum Allowable Mass Velocity using Bubble Cap Trays

Go Maximum Allowable Mass Velocity = Entrainment Factor*(Vapor Density in Distillation*(Liquid Density-Vapor Density in Distillation)^(1/2))

Minimum Internal Reflux given Compositions

Go Internal Reflux Ratio = (Distillate Composition-Equilibrium Vapor Composition)/(Distillate Composition-Equilibrium Liquid Composition)

Dry Plate Pressure Drop in Distillation Column Design

Go Dry Plate Head Loss = 51*((Vapor Velocity Based on Hole Area/Orifice Coefficient)^2)*(Vapor Density in Distillation/Liquid Density)

Flooding Velocity in Distillation Column Design

Go Flooding Velocity = Capacity Factor*((Liquid Density-Vapor Density in Distillation)/Vapor Density in Distillation)^0.5

Weep Point Velocity in Distillation Column Design

Go Weep Point Vapor Velocity Based on Hole Area = (Weep Point Correlation Constant-0.90*(25.4-Hole Diameter))/((Vapor Density in Distillation)^0.5)

Liquid Vapor Flow Factor in Distillation Column Design

Go Flow Factor = (Liquid Mass Flowrate/Vapor Mass Flowrate)*((Vapor Density in Distillation/Liquid Density)^0.5)

Downcomer Residence Time in Distillation Column

Go Residence Time = (Downcomer Area*Clear Liquid Backup*Liquid Density)/Liquid Mass Flowrate

Internal Reflux Ratio Based on Liquid and Distillate Flowrates

Go Internal Reflux Ratio = Liquid Reflux Flowrate/(Liquid Reflux Flowrate+Distillate Flowrate)

Column Diameter Based on Vapor Flowrate and Mass Velocity of Vapor

Go Column Diameter = ((4*Vapor Mass Flowrate)/(pi*Maximum Allowable Mass Velocity))^(1/2)

Head Loss in Downcomer of Tray Tower

Go Downcomer Headloss = 166*((Liquid Mass Flowrate/(Liquid Density*Downcomer Area)))^2

Height of Liquid Crest over Weir

Go Weir Crest = (750/1000)*((Liquid Mass Flowrate/(Weir Length*Liquid Density))^(2/3))

Active Area given Gas Volumetric Flow and Flow Velocity

Go Active Area = Volumetric Gas Flow/(Fractional Downcomer Area*Flooding Velocity)

Fractional Downcomer Area given Total Cross Sectional Area

Go Fractional Downcomer Area = 2*(Downcomer Area/Tower Cross Sectional Area)

Fractional Active Area given Downcomer Area and Total Column Area

Go Fractional Active Area = 1-2*(Downcomer Area/Tower Cross Sectional Area)

Internal Reflux Ratio Given External Reflux Ratio

Go Internal Reflux Ratio = External Reflux Ratio/(External Reflux Ratio+1)

Tower Cross Sectional Area given Fractional Active Area

Go Tower Cross Sectional Area = Active Area/(1-Fractional Downcomer Area)

Tower Cross Sectional Area given Active Area

Go Tower Cross Sectional Area = Active Area/(1-Fractional Downcomer Area)

Clearance Area under Downcomer given Weir Length and Apron Height

Go Clearance Area Under Downcomer = Apron Height*Weir Length

Fractional Active Area given Fractional Downcomer Area

Go Fractional Active Area = 1-Fractional Downcomer Area

Residual Head Loss in Pressure in Distillation Column

Go Residual Head Loss = (12.5*10^3)/Liquid Density

Quality of Feed Based on Liquid Flowrates and Feed Flowrate Formula

Feed Quality = (Liquid Flowrate in Stripping Section-Liquid Flowrate in Rectifying Section)/Feed Flowrate
q = (L_m-L_n)/F

What is Stripping section and Rectifying section in Distillation Column?

In a distillation column, which is a key unit in chemical and petrochemical processes for separating liquid mixtures into their individual components, there are two main sections: the Stripping Section (also known as the Reboiler Section) and the Rectifying Section (also known as the Condenser Section). Location: The Stripping Section is located at the bottom of the distillation column. Function: The primary function of the Stripping Section is to vaporize the components with higher boiling points from the liquid mixture. This is achieved by providing heat, often through a reboiler, which causes the liquid to boil and generate vapor. The vapor rises through the column, carrying with it the less volatile components. Location: The Rectifying Section is situated at the top of the distillation column. Function: The primary function of the Rectifying Section is to condense the vapor rising from the Stripping Section back into liquid.

How to Calculate Quality of Feed Based on Liquid Flowrates and Feed Flowrate?

Quality of Feed Based on Liquid Flowrates and Feed Flowrate calculator uses Feed Quality = (Liquid Flowrate in Stripping Section-Liquid Flowrate in Rectifying Section)/Feed Flowrate to calculate the Feed Quality, The Quality of Feed Based on Liquid Flowrates and Feed Flowrate formula refers to the composition or characteristics of the incoming feed stream. Feed Quality is denoted by q symbol.

How to calculate Quality of Feed Based on Liquid Flowrates and Feed Flowrate using this online calculator? To use this online calculator for Quality of Feed Based on Liquid Flowrates and Feed Flowrate, enter Liquid Flowrate in Stripping Section (L_m), Liquid Flowrate in Rectifying Section (L_n) & Feed Flowrate (F) and hit the calculate button. Here is how the Quality of Feed Based on Liquid Flowrates and Feed Flowrate calculation can be explained with given input values -> 1.345079 = (593.357-301.4321)/217.0318.

FAQ

What is Quality of Feed Based on Liquid Flowrates and Feed Flowrate?

The Quality of Feed Based on Liquid Flowrates and Feed Flowrate formula refers to the composition or characteristics of the incoming feed stream and is represented as q = (L_m-L_n)/F or Feed Quality = (Liquid Flowrate in Stripping Section-Liquid Flowrate in Rectifying Section)/Feed Flowrate. Liquid Flowrate in Stripping Section refers to the molar flowrate of liquid traveling through the stripping section of a distillation column, Liquid Flowrate in Rectifying Section refers to the molar flowrate of the liquid component traveling in the rectifying section of distillation column & Feed Flowrate is defined as the molar flowrate of the feedstock that is sent into a distillation column.

How to calculate Quality of Feed Based on Liquid Flowrates and Feed Flowrate?

The Quality of Feed Based on Liquid Flowrates and Feed Flowrate formula refers to the composition or characteristics of the incoming feed stream is calculated using Feed Quality = (Liquid Flowrate in Stripping Section-Liquid Flowrate in Rectifying Section)/Feed Flowrate. To calculate Quality of Feed Based on Liquid Flowrates and Feed Flowrate, you need Liquid Flowrate in Stripping Section (L_m), Liquid Flowrate in Rectifying Section (L_n) & Feed Flowrate (F). With our tool, you need to enter the respective value for Liquid Flowrate in Stripping Section, Liquid Flowrate in Rectifying Section & Feed Flowrate and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate Feed Quality?

In this formula, Feed Quality uses Liquid Flowrate in Stripping Section, Liquid Flowrate in Rectifying Section & Feed Flowrate. We can use 1 other way(s) to calculate the same, which is/are as follows -

Feed Quality = ((Molar Latent Heat of Vapor+Molar Enthalpy of Feed at Boiling Point-Molar Enthalpy of Feed))/(Molar Latent Heat of Vapor)

Home

FREE PDFs

🔍 Search