Archives
Chemical Engineering Appendix C Problems at the Cumene Production Facility
C-17 C-18 Project 2 New 20,000 tonnes/y Allyl Chloride Plant – Unit 600 C-19 C-20 C-21 C-22 C-23 C-24 C-25 Project 3 Scale-Down of Phthalic Anhydride Production – Unit 700 24.13 22.2 24.13. 24.2 C-26 22.12 22.3. Project 4 Design […]
Chemical Engineering Appendix C Review of Allyl Chloride Production
C-1 Appendix C Project 1 – Review of Allyl Chloride Production C-2 C-3 C-4 C-5 C-6 C-7 C-8 C-9 C-10 C-11 C-12 C-13 C-14 C-15 C-16
Chemical Engineering Chapter 1 Clearance for tube bundle removal on a heat
Chapter 1 1.1 Block Flow Diagram (BFD) Process Flow Diagram (PFD) Piping and Instrument Diagrams (P&ID) (a) PFD (b) BFD (c) PFD or P&ID (d) P&ID (e) P&ID 1.2 P&ID 1.3 It is important for a process engineer to be […]
Chemical Engineering Chapter 10 If improvements are proposed for a process
Chapter 10 Chapter 10 (short answers) 10.1 NPV = 0 at DCFROR. So, if use hurdle rate to calculate NPV, if NPV > 0, rate of return exceeds hurdle rate. 10.2 Choose the project with the greatest NPV. 10.3 If […]
Chemical Engineering Chapter 10 Incremental Yearly Savings Look at incremental cases
10-19 10.25 Look at incremental cases. ROROII = Incremental Yearly Savings / Incremental Investment ROROIIBase +1 – Base = (0.77-0.75)/(5.1-5) = 0.20 See table for complete ROROII calculations. Case FCI ($ million) Cash Flow ($ million) ROROII 10.26 EAOC = […]
Chemical Engineering Chapter 11 For the ethylbenzene process shown in Appendix
Chapter 11 11.1 For the ethylbenzene process shown in Appendix B, check the design specifications for the following three pieces of equipment against the appropriate heuristics, P-301, V-302, T- 302. Comment on any significant differences that you find. P-301 […]
Chemical Engineering Chapter 12 Although this process would result in pure
12-32 12-33 12-34 12-35 12-36 12-37 12-38 12-39 12-40 12.18 Equation 12.1 applies for any “theoretical simple sequence” separation, i.e., where each separation unit makes a perfect split between components. These sequences can be for 12.19 In the derivation of […]
Chemical Engineering Chapter 12 Distillation columns with multiple side-draws
12-21 12-22 12-23 12-24 12-25 12-26 12-27 12-28 12-29 12-30 12-31
Chemical Engineering Chapter 12 the students should be told whether a generic
12-1 Chapter 12 12-2 12-3 12-4 12-5 12-6 12-7 12-8 12-9 12.13 12-10 12-11 12-12 12-13 12-14 12-15 12-16 12-17 12-18 12-19 12-20
Chemical Engineering Chapter 13 Long-range forces are included in the expression
13-1 Chapter 13 13.1 Long-range forces are included in the expression for the excess Gibbs energy 13.2 The ionic interactions affect the excess Gibbs energy of an electrolyte system through short-range and long-range forces as shown in Eqn 13.34. This, […]
Chemical Engineering Chapter 13 Oxide Carbon Dioxide Oxygen Nitrogen Water Stream
13-81 CHEMCAD 5.6.0 Page 5 Job Name: ethylene oxide with recycle Date: 12/14/2008 Time: 14:37:10 EQUIPMENT SUMMARIES Mixer Summary Equip. No. 6 21 22 Name Output Pressure bar 26.8000 90.0000 Valve Summary Kinetic Reactor Summary Equip. No. 9 15 Name […]
Chemical Engineering Chapter 13 Simulation of the IPA to acetone Process
13-21 13.9 Simulation of the IPA to acetone Process, Appendix B, Figure B.10.1 and Tables B . 1 0. 1 and B . 1 0. 2 13-22 13-23 13-24 13-25 13-26 13-27 13-28 13-29 13-30 13.10 13-31 13-32 13-33 13-34 […]
Chemical Engineering Chapter 13 Stream No Stream Name Temp Pres Kpa
13-61 CHEMCAD 5.6.0 Page 3 Job Name: Maleic Anhydride_JAS_2008 Date: 12/14/2008 Time: 15:53:41 EQUIPMENT SUMMARIES Towr Rigorous Distillation Summary Equip. No. 1 Condenser mode 5 Condenser spec. 0.5000 Cond. comp i 1 Reboiler mode 5 Reboiler spec. 1.0000 Reboiler comp […]
Chemical Engineering Chapter 13 Streams And Are Given Below Stream
13-97 CHEMCAD 5.6.0 Page 10 Job Name: formalin_JAS_2008 Date: 12/14/2008 Time: 14:45:38 FLOW SUMMARIES Stream No. 1 2 3 4 Stream Name Temp C 25.0000 30.0000 40.6637 40.7822 Pres kPa 101.3250 120.0000 101.3250 300.0000 Stream No. 5 6 7 8 […]
Chemical Engineering Chapter 13 The UNIFAC model was used for the phase equilibrium
13-41 13-42 13-43 13-44 13-45 13.13 13.12 13-46 13.14 13-47 13.15 13-48 13-49 13.16 13.17 13-50 13.18 Simulation of the Ethylbenzene process, Appendix B, Figure B.2.1 and Table B.2.1. The simulation results are shown in the output following this page. […]
Chemical Engineering Chapter 14 Topological optimization focuses on adjusting
14-1 Chapter 14 14.1 Describe a Pareto analysis. When is it used? Strictly speaking, a Pareto analysis is statistical technique but we use it here in the more 14.2 What is the difference between parametric optimization and topological optimization? List […]
Chemical Engineering Chapter 14 Two Product Batch Sequencing Optimum
14-13 14.13 – Two product batch sequencing Optimum Solution is to just make Product B 14-14 14.14 –Three product batch sequencing 14-15 14-16 14-17 14-18 14-19 14-20 14-21 14.6 8.3 14-22 14-23
Chemical Engineering Chapter 15 but hot utility is only available at 205 C
15-21 15.16 (a) QB = (4 + 3 – 3)(20) = 80 kW QC = (4 + 3 – 3 – 5)(50) = – 50 kW From interval A ( 4 )( 50 ) – ( mc p ) 3 […]
Chemical Engineering Chapter 15 The adjusted heat transfer area for the network
15-39 (c) Above pinch theory says 4 exchangers but can try “direct match” HU 40 1 100 2 120 3 160 4 100 40 120 100 Below pinch 3 exchangers 2 180 CU 240 3 100 160 100 1 160 […]
Chemical Engineering Chapter 15 The reverse is true for streams requiring an MOC
15-1 Chapter 15 15.1 Costs affected by changing the min temp approach for a HEN are 15.2 By decreasing the Tmin in a HEN, the process-process heat exchangers at the pinch will require larger areas and will therefore be more […]
Chemical Engineering Chapter 16 Stream The Tear Streams Which Agreement With
16-1 Chapter 16 16.1 Process simulators generate an incidence matrix based on the process flowsheet and then perform row operations to determine partitioning and precedence ordering. 16.2 In Stream 1, the number of variables for which a good guess is […]
Chemical Engineering Chapter 16 one can solve an optimization problem where
16-12 It can be seen in the UAM shown below that the upper two designs exceed the high temperature limit when the flowrate is decreased by 30%. Both the lower designs satisfy the design requirement of 40% conversion under base […]
Chemical Engineering Chapter 17 Gears Method Used For This Study For
17-1 Chapter 17 17.1 Transient response of a variable can be obtained from a dynamic simulation, not from a steady state simulation. 17.2 The flow through a flow device can be related through the pressure drop across it. This creates […]
Chemical Engineering Chapter 18 Design Conditions Cooling Water Energy Balance
18-1 Chapter 18 18.1 a. 18-2 b. 18-3 18-4 18-5 18.2 18-6 18.3 PIC LIC 18-7 18-8 PIC FIC LIC 18-9 18.4 18-10 18-11 TIC 18-12 18.5 FIC LIC YIC
Chemical Engineering Chapter 18 Strategy The Book Considered Tuning The Temperature
18-13 18.6 18-14 FIC FIC 18-15 19.7 18.7 18-16 TIC LIC 18.8 18-17 FIC set point 18-18 1 8.9 LIC LIC FIC TIC 18-19 FIC 1 8. 1 0 18-20 18-21 18.11 As per B.5, C-601 is an electrically driven […]
Chemical Engineering Chapter 19 wastewater ethylbenzene recycle benzene
19-1 Chapter 19 19.1 (a) Fluidized Bed (b) Turbine (d) Stripper Input Output Frictional loss Liquid Input Vapor Out p ut Vapor Input Liquid Output Possibly heat added (c) Pump Input Output Work Input Output Work 19-2 (e) Adiabatic Batch […]
Chemical Engineering Chapter 2 One example is the addition of steam to a
2-1 Chapter 2 2.1 The five elements of the Hierarchy of Process Design are: a. Batch or continuous process 2.2 a. Separate/purify unreacted feed and recycle use when separation is feasible. b. Recycle without separation but with purge […]
Chemical Engineering Chapter 20 Assume turbulent flow Cooling Water
Chapter 20 20.1 Second order reaction: r kCA 2; k Ae E RT If ideal Ci PiRT if ideal 220ºC = 493K 250ºC = 523K r2 r 1 A2 A1 e E R 1 T2 1 T1CA2 2 CA1 2 […]
Chemical Engineering Chapter 21 and process temperature remains the same
21-32 21.34 (contd) 21-33 21.34 (contd) 21-34 21.35 (see supplemental information on page 21-30) 21-35 21.35 (contd) 21-36 21.35 (contd) 21-37 18.36 Cooling Water Energy Balance MCW1CP140 C 30 C MCW 2CP2T30 C T30 C MCW1 MCW 2 40 C […]
Chemical Engineering Chapter 21 Since the reaction rate doubles for a temperature
21-21 21.29 21-22 21.29 (contd) 21-23 21.30 21-24 21.30 (contd) 21.30 21-25 21.31 21-26 21.31 (contd) 21.31 21-27 21.32 21-28 21.33 21-29 21.33 (contd) 21-30 Supplementary Information for Problems 21.34 and 21.35 21-31 21.34 (see supplemental information on page 21-30)
Chemical Engineering Chapter 21 There Not Enough Information Determine The Pumps
21-1 Chapter 21 21.1 A pump curve shows the relationship between pressure head and volumetric flowrate through a pump 21.2 All depends on the system curve, so the statement is false since parallel or series arrangements could give higher scale […]
Chemical Engineering Chapter 22 Thus The Pressure The Top The Column
22-1 Chapter 22 22.1 From Figure B.10.1, it can be seen that the molten salt is heated by a fired heater in the circulating loop. This implies that heat is added to the reactor, i.e., the reaction is 22.2 Pressure […]
Chemical Engineering Chapter 22 What is labeled part c in the book
22-18 22.16 22-19 22.16 (cont’d) Solution to Problem 22.16 22-20 22.17 22-21 22.17 (cont’d) Solution to Problem 22.17 22.17 (cont’d) 22-22 22-23 19.18 (a) Acrylic Acid reboiled at 89°C = 362 K (b) Ptop Pbottom P Ptop 15.92 kPa 9.5 […]
Chemical Engineering Chapter 23 Flowsheet of fluid bed reactor Calculation strategy
23-20 Background Information on Problems 23.17 – 23.20 23-21 23.17 23-22 23.17 (contd) 23-23 23.18 23-24 23.18 (contd) 23.19 See Problem 23.18 for: a) Flowsheet of fluid bed reactor b) Calculation strategy c) Calculation for V = 7.49 m3 23-25 […]
Chemical Engineering Chapter 23 for high conversions the flow pattern and mixing
Chapter 23 23.1 The main reason is the requirement for large reactors in order to obtain very high conversions. If the reaction rates are very high for the conditions used (for example the combustion of a fuel in air or […]
Chemical Engineering Chapter 24 But U will increase because the mass
24-15 24.15 (a) Pump and system curves: 46.1 hm50 hm73 hm 73 3 3 3 max v 46% scale-up Heat Exchanger: lm ss TUAQ mQ mQ 20% scale-up Vaporizer limits scale-up since Tmax for steam is 160 C. (b) NPSHAPtank […]
Chemical Engineering Chapter 24 Since Dowtherm has been increased to compensate
Chapter 24 24.1 24-1 24-2 24.2 24-3 24.3 24.4 24-4 24.5 24.6 24-5 24.7 24.8 24.9 24-6 24-7 24.10 24-8 24.10 (contd) 24-9 24.11 24-10 24.12 24-11 24.13 24-12 24.13 (contd) 24-13 24.13 (contd) 24-14 24.14
Chemical Engineering Chapter 25 Students Often Are Eager Develop Guidelines This
25-1 Chapter 25 Ethics and Professionalism 25.1 25.2 25-2 25.3 25.4 25.5 25.6 25.7 25.8 Codes of conduct can be obtained from companies, but often only if the company name is removed. The instructor should obtain a couple from […]
Chemical Engineering Chapter 26 The problem is more likely on process side
26-1 Chapter 26 26.1 26.2 26.3 26.5 26.2.1 26.4 26.2 26-2 26.6 26.7 26.8 26.9 26.7 26-3
Chemical Engineering Chapter 27 General Comments The First Printing The
Chapter 27 General Comments: In the first printing of the third edition, “the ethylbenzene process” appears twice. It will be removed in subsequent printings. The suggestions that follow are just a few ideas. The overall themes are: a. Heat integration […]
Chemical Engineering Chapter 3 What is the difference between a zero-wait
3-1 Chapter 3 3.1. What is a flowshop plant? A flowshop plant is a plant in which several batch products are produced using all or a sub- 3.2. What is a jobshop plant? A flowshop plant is a plant in […]
Chemical Engineering Chapter 5 Process description for ethylbenzene process
5-1 Chapter 5 5.1 For ethylbenzene process in Figure B.2.1 5.2 For styrene process in Figure B.3.1 Feeds: ethylbenzene, steam Products: styrene, benzene/toluene (by-products), hydrogen (by-product), wastewater (waste stream) 5.3 For drying oil process in Figure B.4.1 Feeds: acetylated castor […]
Chemical Engineering Chapter 6 Set Based Available Highest Hot Utility For
6-1 Chapter 6 6.1 Methods for setting pressure of a distillation column a. Set based on the pressure required to condense the overhead stream using cooling water 6.2 Run a distillation column above ambient pressure because a. The components to […]
Chemical Engineering Chapter 7 Most The Cost Heat Exchanger Involves Machining
7-1 Chapter 7 7.1 (i) Capacity or size (for heat exchanger this would be heat exchanger area) 7.2 CEPCI is used to adjust purchased costs of equipment for different times. It is a measure for the inflation of costs associated […]
Chemical Engineering Chapter 8 The simple answer is that the cooling water
Chapter 8 8.1 The term 0.18FCI has nothing to do with the interest on capital investment. From Table 8.2 we see that the following costs are based on the FCI: Maintenance and repairs Operating supplies Local insurance and taxes Plant […]
Chemical Engineering Chapter 9 Interest is the return on an investment or
9-1 Chapter 9 Chapter 9 (Short Answers) 9.1. Simple interest is calculated such that the interest is based on the original principal. 9.2 The nominal interest rate is a number based on interest payments once per year; however, if interest […]