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Chapter 2 : Conversion & Reactor Sizing, 1, Screenshot 2021-09-27 at 9…
Chapter 2 : Conversion & Reactor Sizing
Levenspiel Plots
CSTR,
can calculate CSTR Volume with a levenspiel plot, by multiplying X (conversion) and FA0/-rA (form area of rectangle)
PFR
dFa/dV= ra
or the brief formula
V = Fa0/-ra int dx from x0 to xf
Trapezoidal Rule (2 data)
1/3 Simpson Rule (3 data)
5 points quardrature formula (4 data)
3/8 Simpson Rule (4 data)
Equation of Conversion(Differential)
Numerical Evaluations Of Integrals.
PFR volume can be evaluated using method as Simpson’s One-Third Rule
Other numerical methods are:
Trapezoidal Rule (uses two data points)
Simpson’s Three-Eight’s Rule (uses four data points)
Five-Point Quadrature Formula
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Reaction Sizing
(F/-rA) vs X , volume of CSTR & PFR can be represented in shaded areas in Levenspiel Plots.
Levenspiel Plots
3 Question that you sill not understand
Is Levenspiel Plot is used for Batch reactor and PBR as well ?
2.is it possible that we will get a problem, but can't use the assumptions that have been made before so we have to derive the formula again?
3.
CSTR
V=(FAoX)/-rA
PBR
FAo(dX/dW)=-rA'
W=FAo|(dX/-rA'
PFR
FAo(dX/dV)=-rA
V=FAo|(dX/-rA)
Batch Reactor
NAo(dX/dT)=-rAV
t=NAo|(dX/-rAV)
