The document discusses how to tackle practical problems involving continuous stirred-tank reactors (CSTRs). It addresses two common questions: 1) Given known reaction rate data and space time for each reactor in a series, how to calculate the exit concentration from the last reactor. 2) Given a required conversion, how to design a suitable reactor system using the minimum space. The document suggests answering the first question by using the known parameters in material balance equations. For the second question, it recommends designing different reactor configurations and sizes and selecting the one requiring minimum space to achieve the specified conversion.

1. Polymer/Chemical Reactor Design Muhammad Zafar Iqbal

2. Today How to tackle with practical problems in dealing with CSTR You have the reactors but unknown conversions You know the conversion and need to design the system following that conversion needs. Assignment: Example 7.1 + 7.2 From Hari Silla

3. How to tackle with practical problems in dealing with CSTR For a fresh engineer, just starting job in process design, two preliminary questions on the reactor may be asked: 1- The factory has a no. of CSTRs arranged in series. The reaction rate data is known along with space time for each reactor. The Process Engineer is asked to find concentration at the exit point of the last reactor. 2- The factory is going to design a new reactor system (may comprise of reactors of same kind or different and of same size and different), and according to process requirements you know the conversion. The Process Engineer is asked to design a suitable reactor system for that much conversion which covers the minimum space.

4. Answer to 1 st Question

6. Answer to 2 nd Question

7. How will you find the best arrangement for your own reaction system.