4. Isothermal Reactor Design

Additional Homework Problems

1. CDP4-28_B Pressure drop in a PBR with a first-order reaction using real data: "What if" questions asked. [3rd Ed. P4-18]
2. CDP4-29_B Good Troubleshooting Problem. Inspector Ambercromby investigates a possible fraud at Worthless Chemical. [3rd Ed. P4-9]
3. CDP4-30_D A first order reaction is carried out in a packed bed reactor with pressure drop where the rate constant varies inversly with particle diameter. One can also choose from various pipe sizes to get the maximum conversion. [3rd Ed. P4-20]
4. CDP4-31_B Pressure drop in a packed bed reactor to make alkylated cyclohexanols. [3rd Ed. P4-22]
5. CDP4-32_B A semibatch reactor is used to carry out the reaction
   
   [3rd Ed. P4-26]
6. CDP4-33_BA CSTR with two impellers is modeled as three CSTRs in seires. [3rd Ed. P4-29]

7. CDP4-A_B A sinister looking gentleman is interested in producing methyl perchlorate in a batch reactor. The reactor has a strange and unsettling rate law. [2nd Ed. P4-28] (Solution Included)

8. CDP4-B_C (Ecological Engineering) A much more complicated version of problem 4-17 uses actual pond (CSTR) sizes and flow rates in modeling the site with CSTRs for the Des Plaines river experimental wetlands site (EW3) in order to degrade atrazine. [See Web Module on CD or WWW]
9. CDP4-C_B The rate of binding ligands to receptors is studied in this application of reaction kinetics to bioengineering. The time to bind 50% of the ligands to the receptros is required. [2nd Ed. P4-34] J. Linderman, University of Michigan

10. CDP4-D_B A batch reactor is used for the bromination of p-chlorophenyl isopropyl ether. Calculate the batch reaction time. [2nd Ed. P4-29]
11. CDP4-E_B California Professional Engineers Exam Problem, in which the reaction

    B + H₂A

    is carried out in a batch reactor. [2nd Ed. P4-15]

12. CDP4-F_A Verify that the liquid-phase reaction of 5, 6-benzoquinoline with hydrogen is psuedo-first-order. [2nd Ed. P4-7]

13. CDP4-G_B Radial flow reactors can be used to good advantage for exothermic reactions with large heats of reaction. The radical velocity varies as:

    Vary the parameters and plot X as a function of r. [2nd Ed. P4-31]

14. CDP4-H_A Designed to reinforce the basic CRE principles through very straight forward calculations of CSTR and PFR volumes and batch reactor time. This problem was one of the most often assigned problems from the 2nd Edition. [2nd Ed. P4-4]
15. CDP4-I_B Formation of diphenyl in a batch, CSTR, and PFR. [3rd Ed. P4-10_B]

16. CDP4-J_B n-Pentane->i-pentane in a packed bed reactor. [3rd Ed. P4-21_B]
17. CDP4-K_C Packed bed spherical reactor. [3rd Ed. P4-24]
18. CDP4-L_B The reaction A B is carried out in a membrane reactor where B diffuses out. [3rd Ed. P4-30]

19. CDP4-M_B The overall conversion is required in a packed-bed reactor with recycle. [2nd Ed. P4-22]
20. CDP4-N_C Excellent reversible reaction with recycle. Good problem by Professor H. S. Shankar. IIT-Bombay. [3nd Ed. P4-28_C]

21. CDP4-O_D DQE April 1999

    A B in a PFR and CSTR with unknown order. (30 minutes to solve)

22. CDP4-P_D A Dr. Probjot Singh Problem

    A B C Species C starts and ends at the same concentration.

23. CDP4-Q_A The gas-phase reaction A + 2B2D

    has the rate law -r_A = 2.5 C_A^0.5C_B. Reactor volumes of PFRs and CSTRs are required in this mulitpart problem. [2nd Ed. P4-8]

24. CDP4-R_B What type and arrangement of flow reactors should you use for a decomposition reaction with the rate law -r_A = k₁C_A^0.5 / (1 + k₂C_A)? [1st Ed. P4-14]
25. CDP4-S_B The liquid-phase reaction 2A + BC + D

    is carried out in a semibatch reactor. Plot the conversion, volume, and species concentrations as a function of time. Reactive distillation is also considered in part (e). [2nd Ed. P4-27]

26. CDP4-T_B The growth of a bacterium is to be carried out in excess nutrient. nutrient + cellsmore cells + product

    The growth rate law is:
    [2nd Ed. P4-35]

27. CDP4-U_B California Registration Examination Problem. Second-order reaction in different CSTR and PFR arrangements. [2nd Ed. P4-11]
28. CDP4-V_B An unremarkable semibatch reactor problem, but it does require assessing which equation to use.

29. CDP4-New From time to time new problems relating Chapter 4 material to everyday interests or emerging technologies will be placed on the web. Solutions to these problems can be obtained by e-mailing the author.