Elements of
Chemical Reaction Engineering
6th Edition



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Essentials of
Chemical Reaction Engineering
Second Edition

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Chapter 12: Steady-State Nonisothermal Reactor Design: Flow Reactors with Heat Exchange

PBR with heat exchange and variable coolant rate

The elementary reaction

is carried out in a PBR where the coolant temperature varies along the length of the reactor.

We want to determine both the conversion and temperature profiles

Write a Polymath program to plot X, T, and Ta vs. W.

Solution


 

 

 

 

 

 

Solution

Mole Balance

Rate Law

Stoichiometry

Energy Balance:

Energy Balance on the Coolant:

Why do you think the conversion and temperature curves become flat after a catalyst weight of 1200 kg?

This Polymath program can be loaded directly from the CD under the Chapter 8 Living Example Problems under the name "Lecture 15/16 Variable Coolant Temperature."

Use this when working with the Living Example Problem.

Back to Chapter 12