4. Identify and Name:

 
  1. Relative Theories and Equations
Algebraic Form of CSTR equation:

derive CSTR equation

For reactors in series, such as a PFR after a CSTR, the integral form of a PFR equation becomes:

flow rate for a series of reactors

  1. Systems
  2. Volume of PFR

    Volume of CSTR

  3. Dependent and Independent Variables
  4. Independent: VCSTR, VPFR, FA0, FB0, T

    Dependent: k, X1, X2

  5. Knowns and Unknowns
  6. Knowns: same as Part I
    values of knowns
    Unknowns: conversion from CSTR, X1

    conversion from PFR, X2

  7. Inputs and Outputs
  8. In: same as Part I

    Out: same as Part I

5.Assumptions/Approximations
same as Part I
6.Algorithm: Same as Part I
Combine: 
steps in combining
Evaluate:
evaluating for X1

evaluating for X2
Check units, X is dimensionless.

With a CSTR upstream of the PFR, the conversion increased from 0.5 to 0.684.

 

Back to Part 1 : PFR

Back to the Original Problem