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# SOLUTIONS MANUAL H. Scott Fogler, Engenharia das Reações Química, 3ed

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'"~ 3rd Edition. Solution Manual, Chapter 1 Chapter 1 General: The goal of these problems are to reinforce the definitions and provide an understanding of the mole balances of the different types of reactors. It lays the foundation for step 1 of the algorithm in Chapter 4. Pl-l. This problem might encourage students to get in the habit of writing down what they learned from each chapter. Pl-2. Small open-ended question from which one could choose one or two parts. Parts (a), (b) or (e) are recommended. Pl-3. This problem use Example 1-3 to calculate a CSTR volume. It is straight forward and gives the student an idea of things to come in terms of sizing reactors in chapter 4. An alternative to PI-II and PI-12. Pl-4. Alternative to Pl-3, PI-II, and PI-12. See Pl-3 above. Problems PI-5, PI-6, and PI-7 review the definitions given in the chapter. . Pl-S. This problem can be assigned to just be read and not necessarily to be worked. It will give students a flavor of the top selling chemicals and top chemical companies. Pl-9. This problem will be useful when the table is completed and the students can refer back to it in later chapters. Answers to this problem can be found on Professor Susan Montgomery's equipment module on the CD-ROM. See Pl-17. Many students like this straight forward problem because they see how CRE principles can be applied to an everyday example. It is often assigned as an in class problem and part (g) is usually omitted. Problems Pl-ll and PI-12 show a bit of things to come in terms of reactor sizing. Can be rotated from year to year with PI-3 and PI-4. See Pl-3 above. Pl-13. Asks for details of operation of an industrial reactor. Pl-14. Encourages and requires the student to go outside the text for information related to CRE. May be a bit early in the text to assign this problem. Pl-15. Encourages and requires using other sources to obtain information. Pl-16. Encourages using other sources to obtain information. - . Pl-17. I strongly recommend this problem be assigned. It can be used in ~ conjunction with Problem Pl-9. Professor Susan Montgomery has done a ci- ~ p.1-1 ~ . ; 3rd Edition. Solution Manual, Chapter 1 3rd Editi great job pulling together the material on real reactors in her equipment Alternat module on the CD-ROM. lr1 pJPI-IS. I always assign this problem so that the students will learn how to use as POL YMA TH/MatLab before needing it for chemical reaction engineering problems. lime. AIPl-19. As the WWW becomes more developed, it may be more and more prl important to assign this Problem. Difficult CDPl-A Similar to problems 3,4,11, and 12. SJ ~CDPl-B Points out difference in rate per unit liquid volume and rate per reactor volume. K M Summar~ 0 Solution . Assigned Alternates Difficul~ Iimg. Civen Note th P1-1 a No . . Pl-2(b) AA 2(a),2(d),2(e) SF 15 c&d Yes . Pl-3 AA 3,4,11,12,A. FSF 30 Yes I Pl-4 AA 3,4,11,12,A FSF 30 Yes Pl-5 I Yes PI-6 I Yes PI-7 I Yes . PI-8 - Read Only SF 5 Yes PI-9 0 Yes PI-10 0 FSF 60 Yes P1-11 AA 3,4,11,12,A FSF 30 Yes PI-12 AA 3,4,11,12,A FSF 30 Yes PI-13 I Yes i Pl-14 SIC No Pl-15 SIC Partial [ .;Pl-16 SIC Partial . Pl-17 SF 45 No . Pl-1S SF 60 Yes ~ PI-19 I No ~ ,CDPI-A AA 3,4,11,12,A FSF 30 ~ CDPI-B I FSF 30 t Assi gneg ,. = Always assigned, AA = Always assign one from the group of alternates, . 0 = Often, I = Infrequently, S = Seldom, G = Graduate level iJ . I ~p.1-2 ~ ~rd Edition, Solution Manual, Chapter 1 .her equipment Alternates In problems that have a dot in conjunction with AA means that one of the problem, either the problem with a dot or anyone of the alternates are always 1m how to use assigned. on engineering ~ Approximate time in minutes it would take a B/B+ student to solve the lore and more problem. Qifficult~ SF = Straight forward reinforcement of principles (plug and chug) FSF = Fairly straight forward (requires some manipulation of equations or an rate per reactor intermediate calculation). IC = Intermediate calculation required M = More difficult OE = Some parts open-ended. SolutionGiven "Note the letter problems are found on the CD-ROM. For example A = CDPI-A. No c&d Yes Yes Summary Table Ch-1 Yes4:s Review of Definitions and 1,5,6,7,8,9 s Assumptions es Yes Introduction to the CD-ROM 17,18,A Yes Yes Make a calculation 10,11,12,13 Yes Yes Open-ended 14,15,16 Yes No Straight forward 2(b),3,13 Partial Partial Fairly straight forward 4,11,12,B No Yes More difficult 10 No f alternates, p.1-3 . ~~ ~:- - , 18 Chapter 1 EJ.:.1 No solution will be given. ~ (a) Reactants might not be hot enough to react. (b) Plot Cost vs. Volume on log-log paper. Use this graph to generate an equation for cost as a function of volume. In (Cost) Ys. In (Volume) 13 .12 c i' 11 ~e f U I: '-" . io c 10. - 9 Y = 0.2901x + 9.4932 8 0 2 4 6 8 10 In (Volume) PI-4 From this we generate the equation: Cost = 13, 270(V)°.29 We can use this equation to fmd the desired prices: t For a 6000 gallon reactor: Cost = 13,270(6000)°.29 = $165,400 . For a 15,000 gallon reactor: Cost = 13,270(15,<xx»0.29 = $215,740 (c) V = .!Q.~~~ ln~ L- = 300.3dm3 0.23 rom 0.00 1 C Ao (d) For Constant Pressure: rA=~~=~~~=~+~~ IV dt V dt dt V dt ~ dC C IrA =~+- A wtV.cos(wt) .. dt Vo +VJsin(wt) !ij (e) He/She might not be able to respond to a malfunction if he/she became injured, and . no one would be there to come to his/her aid. I-Lf

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