reactor design 5

Polymer/Chemical Reactor Design

Muhammad Zafar Iqbal

Today• Designing of Plug flow reactor• Example 5.4, 5.5 solve Example: 5.1 from

chapter 5 Numerical Analysis with C++• Space time and Mean Residence time: concept and discussion• Presentation of Jacketed and Coiled Vessels from Kern.

Next week: 1- Problems of chapter 5 from Levenspiel (Assigned) 2- Networking of reactors 3- Finding the best sequence for our purpose

Required: The students must bring calculators and graph papers along with them. There will be assignments to be solved just sitting in the class.

Plug Flow ReactorPlug Flow Reactor: Ideal flow reactor in which no back mixing occurs.The composition of the reaction mixture changes along the length of reactor.

Characteristics

Basic Design Equation1-

2- Accumulation = 0 at steady state condition

3-4- 5-

6- The equation would be:7-

For First order Irreversible Reactions

Example 5.4

Solution1- Calculate expansion factor

2-

3-

1- Graphical Integration:

2- Numerical Method: Chapter 5 Numerical analysis with C++Here, as it is a smooth curve, so apply Simpson's rule:

Analytical Integration Method:

Space Time will be:

Example 5.5

Solve Yourself

Space time and Residence TimeSpace Time:

Mean Residence Time: