Reactor Design 6

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Reactor Design 6

  1. 1. Polymer/Chemical Reactor Design Muhammad Zafar Iqbal
  2. 2. Today <ul><li>Design for single reactions ( Chapter 6 Levenspiel) </li></ul><ul><li>1- size comparison of batch and plug flow reactors </li></ul><ul><li>2- Mixed Vs Plug Flow Reactor </li></ul><ul><li>3- Plug Flow Reactors in Series and in parallel </li></ul>
  3. 3. Design for Single Reactions <ul><li>The requirements of a good design: </li></ul><ul><li>1- Experience </li></ul><ul><li>2- Engineering Judgment </li></ul><ul><li>3- Characteristics of different Reactor System </li></ul><ul><li>Two main requirements in the reactor design are: </li></ul><ul><li>1- Reactor Size </li></ul><ul><li>2- Product Distribution in the reactor </li></ul><ul><li>All the factors are judged on Economic Scale </li></ul>
  4. 4. <ul><li>1- Batch Vs Plug Flow Reactor </li></ul><ul><li>- Both have specific advantages and disadvantages </li></ul><ul><li>- For a give conversion, both have same volume </li></ul><ul><li>2- Mixed Vs Plug Flow Reactor </li></ul><ul><li>Consider the reaction: </li></ul><ul><li>For Mixed flow reactor: </li></ul><ul><li>For Plug Flow Reactor: </li></ul><ul><li>Comparison.. Or </li></ul>
  5. 6. Graphical Comparison
  6. 7. Plug Flow Reactors in Series/Parallel <ul><li>Consider “N” plug flow reactors connected in series, then for any reactor, </li></ul><ul><li>Or for N reactors, we may write as, </li></ul><ul><li>Parallel Combinations: </li></ul><ul><li>Parallel systems are adopted for constant space time through out. </li></ul><ul><li>The feed is equally distributed in all the parallel reactors. </li></ul>
  7. 8. Solve Yourself

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