CE 329, Fall 2015 First Mid-Term Exam
|
|
- Kimberly Russell
- 5 years ago
- Views:
Transcription
1 CE 39, Fall 15 First Mid-erm Exam You may only use pencils, pens and erasers while taking this exam. You may NO use a calculator. You may not leave the room for any reason if you do, you must first turn in your exam, and you will not be permitted to resume taking the exam. his exam is printed on two-sided pages there are 5 short answer questions, each worth 5 points and three problems worth 5 points each for a total of 1 points. Answer All questions, including the short answer questions, in the blue book that has been provided to you. When the exam ends, put these sheets inside your blue book and turn both in. For the problems you only need to fully show what equations to use and to fully explain how to use them to obtain the requested answer. You do not need to perform any calculations, and you do not need to perform any algebra beyond that needed to obtain the equations to be solved. If you need to use numerical methods to answer a question, provide the information listed below Numerical Methods If you need to fit a linear model to data, you must state that it is necessary to fit a model to the data numerically and you must explicitly identify (a) the specific linear model being fit to the data, (b) the response and set variables in the model and (c) the parameters in the model. hen you must (d) show how to calculate the value of each response and set variable for an arbitrary data point. Once you have provided that information, you may assume that the correlation coefficient, the best value of each model parameter and its 95% confidence interval and either a model plot or a parity plot and residuals plots have been found using appropriate numerical software, and you may use those results as you need to complete the problem. If the solution to a problem involves solving a set of non-linear algebraic equations, you must state that it is necessary solve a set of non-linear algebraic equations numerically and you must (a) explicitly identify the equations to be solved and an equal number of unknowns to be solved for by writing the equations in the form, fi(unknowns list) expression. You then must (b) show how to calculate every quantity that appears in those functions, assuming you are given values for the unknowns. Once you have provided (a) and (b), you may assume that the values of the unknowns have been found numerically, and you may use those values as needed to complete the problem. If the solution to a problem involves solving a set of initial value ordinary differential equations, you must state that it is necessary to solve a set of initial value ODEs numerically and you must (a) explicitly identify the equations to be solved, the independent variable and the dependent variables by writing the equations in the form, (derivative i ) fi(independent variable, dependent variable list) expression. hen you must list values or show how to calculate (b) initial values of the independent and dependent variables, (c) the final value of either the independent variable or one of the dependent variables and (d) every quantity that appears in those functions, assuming you are given values for the independent and dependent variables. Once you have provided (a), (b) and (c), you may assume that the
2 final values of the remaining independent and dependent variables have been found numerically, and you may use those values as needed to complete the problem. If the solution to a problem involves solving a set of boundary value ordinary differential equations, you must state that it is necessary to solve a set of boundary value ODEs numerically and you must (a) explicitly identify the equations being solved, the independent and dependent variables in those equations and the boundaries of the range of the independent variable over which the equations are to be solved, (b) list values or show how to calculate boundary conditions for each dependent variable the number of boundary conditions for a particular dependent variable must equal the highest order of derivative of that dependent variable appearing in the equations being solved and (c) list values or show how to calculate every quantity in the equations being solved other than the derivatives, assuming you are given values for the independent and dependent variables. Once you have provided (a), (b) and (c), you may assume that the value of each dependent variable and its first derivative with respect to the independent variable is known at any position between the boundaries, and you may use those values as needed to complete the problem. a ax x n xn+1 n +1 (n 1) a + bx ln x a + bx x 1 ax + b a Indefinite Integrals x ln x x a + bx 1 1 ( b 3 a + bx ) a( a + bx) + a ln( a + bx) x a a + bx a + bx 1 b 3 a + bx aln a + bx ΔH ΔH K ( 98 K) ν i, ΔH f,i i all ( ) ΔH 98 K ( a + bx ) 1 ln( a + bx) b x( a + bx) 1 a + bx ln a x a + bx b( a + bx) 1 x a + a + bx a + bx 1 b ln a + bx x a + bx x b a ln a + bx b hermodynamic Relationships 98 K ( ( 98 K) ) K ν i, ΔH c,i i all ΔG 98 K + ν i, d i all 98K ( 98 K) exp ΔG 98 K R( 98K ) K a i y i ϕ i P 1 atm a i γ i x i a i x i a i h i x i K 98 K ν i, ΔG f,i exp a i ν i, ( 98 K) 98 K ( ) d R ΔH a i y i P 1 atm
3 ξ g k ( n i n i ) ξ! ν i, f k f k equil Rate, Composition and Reaction Progress Relationships ( ) N ind n i n i + ν i, ξ n k n k n k n k ν i, equil C i n i 1 f k n n k k n k V C i V! V!!n R total P V! r r i, ν i, 1 V dξ ( constant ρ ) P n R total V P!n total R P i n i R V P!n R i i V! P y P i i µ r g C cells r AB forward N Av σ AB C A C B r ABC forward 8N Av σ AB σ BC lc A C B C C r forward r k, f r RI, q Elementary Reaction Relationships 8k B πµ exp E R r N σ C k B AA forward Av AA A πµ exp E R k B Nq AB q C h exp ΔE k B AB C k B π µ AB µ BC exp E R i ν i, k,r i ν i, k, f i reactants s all steps ν RI,s r s C cat products reactants ν i, 1 i ν i, K,eq r i, ν i,s r s r r srd s all steps C cat, free + ν cat,i C cat,i C isurf C sites θ i θ vacant + θ i 1 i all catalyst complexing i all adsorbed F ( λ) w w t F ( λ) 1 exp λ w f w t Age Function Relationships F λ t!m w out t t w m tot for t < t 1 for t t F λ F λ x total xn ( x) x total x dn ( x) y total y( x) N ( x) y total y( x)dn ( x) x x N total N x N total dn(x) y average x x x x y( x) N ( x) x N ( x) x y average x y( x)dn ( x) x dn ( x) 3
4 τ V SV 1 dn τ i V!Q! W n i Ĉ p,i d +V ν r i, Reactor Relationships r ΔH dp V P dv!q W! Ĉ p i d +V ( r ΔH ( )) +V z π D 4 P z 1 ε G ε 3 ρφ s D p g c π DU ( e ) z dn i!n i +V ν i, r + d Ĉ p i ν i, r t P z G 4 g c π D z fg ρd 15( 1 ε )µ Φ s D p G V ν i, r!q W! ĥ i ĥi,stream D ax d C i dz λ er r + d dz u s C i + 1 r r Ĉ p i + π D 4 + d ν i, r r ΔH + π D 4 ( n i Ĉ pi ) + V r ΔH C D i er + 1 r r u sρ fluid C! p, fluid z r ΔH C i r t z u C s i d P dv Ĉ p i dp V P dv ν i, r V dp P t V 4
5 hot,out Other Relationships,hot d +,cold d,hot d +UAΔ hot,in Δ AM cold,out + hot,out Δ cold hot,out cold,in R R reactor in cold,out cold,in cold,in + hot,in, feed d +,r d feed reactor out ( recycle ) hot,out hot,in hot,out cold,in Δ LM hot,out cold,in ln hot,in cold,out ( hot,in cold,out ) recycle flow process exit flow, feed + R R,reactor out 1+ R R,reactor in reactor in Short Answer Questions (5 points each) 1. rue or false: If you want to use a differential method of data analysis on batch reactor data, then the reactor must be operated differentially when the data are being collected.. rue or false: In an ideal plug flow reactor, perfect radial mixing is assumed. 3. rue or false: External transport limitations that affect the apparent rate of a heterogeneous catalytic reaction are the result of concentration and/or temperature gradients along the length of the catalyst pores. 4. he quantity, 1 exp λ t, represents a. he response of an ideal CSR to a step change input. b. he age function for an ideal CSR. c. he concentration gradient between the bulk fluid and the external surface of a heterogeneous catalyst. d. he Weisz-Prater criterion for the absence of internal mass transport limitations. e. An impulse stimulus for measuring the residence time distribution. 5. Write the Arrhenius expression. Problems (5 Points Each) 6. he macroscopically observed reaction given in equation (1) takes place at the molecular level via the mechanism given in equations () and (3). Without making any additional assumptions beyond the Bodenstein steady state approximation, derive an expression for the rate of the overall reaction. Your answer should not include the concentration or partial pressure of any reactive intermediates. ICl + H I + HCl (1) 5
6 ICl + H HI + HCl () HI + ICl HCl + I (3) 7. Gas phase reaction (1) below was studied in an isothermal, batch reactor. Initially the 1 L reactor contained pure reactant A at a temperature of 35 C and a pressure of 1 atm. he reaction proceeded at 35 C, with measurements of the total pressure being taken versus time. he resulting data are given in the table below. Use the data to test the validity of the rate expression given in equation () below using an integral analysis. A(g) B(g) (1) r 1 k 1 P A () t (min) P (atm) he liquid phase reaction between A and B, equation (1), was studied in a 5 ml CSR at 4 atm total initial pressure and 139 C. he reactor was fed a solution containing A at a concentration of.8 M and B at a concentration of 1. M. he fractional conversion of A was measured as a function of space time time the data are given below. Determine whether the rate expression given in equation () adequately describes the data. A + B R (1) r A kc A C B () space time (h) fa
CE 329, Fall 2015 Second Mid-Term Exam
CE 39, Fall 15 Second Mid-erm Exam You may only use pencils, pens and erasers while taking this exam. You may NO use a calculator. You may not leave the room for any reason if you do, you must first turn
More informationCE 329, Fall 2015 Assignment 16, Practice Exam
CE 39, Fall 15 Assignment 16, Practice Exam You may only use pencils, pens and erasers while taking this exam. You may NO use a calculator. You may not leave the room for any reason if you do, you must
More informationA First Course on Kinetics and Reaction Engineering. Class 20 on Unit 19
A First Course on Kinetics and Reaction Engineering Class 20 on Unit 19 Part I - Chemical Reactions Part II - Chemical Reaction Kinetics Where We re Going Part III - Chemical Reaction Engineering A. Ideal
More informationChemical reactors. H has thermal contribution, pressure contribution (often negligible) and reaction contribution ( source - like)
Chemical reactors - chemical transformation of reactants into products Classification: a) according to the type of equipment o batch stirred tanks small-scale production, mostly liquids o continuous stirred
More informationChemical Reactions and Chemical Reactors
Chemical Reactions and Chemical Reactors George W. Roberts North Carolina State University Department of Chemical and Biomolecular Engineering WILEY John Wiley & Sons, Inc. x Contents 1. Reactions and
More informationChE 344 Winter 2011 Mid Term Exam I + Solution. Closed Book, Web, and Notes
ChE 344 Winter 011 Mid Term Exam I + Thursday, February 17, 011 Closed Book, Web, and Notes Name Honor Code (sign at the end of exam) 1) / 5 pts ) / 5 pts 3) / 5 pts 4) / 15 pts 5) / 5 pts 6) / 5 pts 7)
More informationChemical Reaction Engineering
Chemical Reaction Engineering Dr. Yahia Alhamed Chemical and Materials Engineering Department College of Engineering King Abdulaziz University General Mole Balance Batch Reactor Mole Balance Constantly
More informationChemical Reaction Engineering
Lecture 8 Chemical Reaction Engineering (CRE) is the field that studies the rates and mechanisms of chemical reactions and the design of the reactors in which they take place. oday s lecture Block 1: Mole
More informationChemical Kinetics and Reaction Engineering
Chemical Kinetics and Reaction Engineering MIDTERM EXAMINATION II Friday, April 9, 2010 The exam is 100 points total and 20% of the course grade. Please read through the questions carefully before giving
More informationChemical Reaction Engineering. Dr. Yahia Alhamed
Chemical Reaction Engineering Dr. Yahia Alhamed 1 Kinetics and Reaction Rate What is reaction rate? It is the rate at which a species looses its chemical identity per unit volume. The rate of a reaction
More informationA First Course on Kinetics and Reaction Engineering. Class 9 on Unit 9
A First Course on Kinetics and Reaction Engineering Class 9 on Unit 9 Part I - Chemical Reactions Part II - Chemical Reaction Kinetics Where We re Going A. Rate Expressions - 4. Reaction Rates and Temperature
More informationChemical Reaction Engineering Lecture 5
Chemical Reaction Engineering g Lecture 5 The Scope The im of the Course: To learn how to describe a system where a (bio)chemical reaction takes place (further called reactor) Reactors Pharmacokinetics
More informationCHEMICAL ENGINEERING KINETICS/REACTOR DESIGN. Tony Feric, Kathir Nalluswami, Manesha Ramanathan, Sejal Vispute, Varun Wadhwa
CHEMICAL ENGINEERING KINETICS/REACTOR DESIGN Tony Feric, Kathir Nalluswami, Manesha Ramanathan, Sejal Vispute, Varun Wadhwa Presentation Overview Kinetics Reactor Design Non- Isothermal Design BASICS OF
More informationReview: Nonideal Flow in a CSTR
L3- Review: Nonideal Flow in a CSTR Ideal CSTR: uniform reactant concentration throughout the vessel Real stirred tank Relatively high reactant concentration at the feed entrance Relatively low concentration
More informationChE 344 Winter 2013 Final Exam + Solution. Open Course Textbook Only Closed everything else (i.e., Notes, In-Class Problems and Home Problems
ChE 344 Winter 03 Final Exam + Solution Thursday, May, 03 Open Course Textbook Only Closed everything else (i.e., Notes, In-Class Problems and Home Problems Name Honor Code (Please sign in the space provided
More informationLecture 11 Kjemisk reaksjonsteknikk Chemical Reaction Engineering
Lecture Kjemisk reaksjonsteknikk Chemical Reaction Engineering Review of previous lectures Kinetic data analysis of heterogeneous reactions. Characterization of t catalysts. Kinetic study, find a kinetic
More informationBAE 820 Physical Principles of Environmental Systems
BAE 820 Physical Principles of Environmental Systems Type of reactors Dr. Zifei Liu Ideal reactors A reactor is an apparatus in which chemical, biological, and physical processes (reactions) proceed intentionally,
More informationChE 344 Winter 2013 Mid Term Exam I Tuesday, February 26, Closed Book, Web, and Notes. Honor Code
ChE 344 Winter 2013 Mid Term Exam I Tuesday, February 26, 2013 Closed Book, Web, and Notes Name Honor Code (Sign at the end of exam period) 1) / 5 pts 2) / 5 pts 3) / 5 pts 4) / 5 pts 5) / 5 pts 6) / 5
More informationChE 344 Winter 2011 Final Exam + Solution. Open Book, Notes, and Web
ChE 344 Winter 011 Final Exam + Solution Monday, April 5, 011 Open Book, Notes, and Web Name Honor Code (Please sign in the space provided below) I have neither given nor received unauthorized aid on this
More information1. Introductory Material
CHEE 321: Chemical Reaction Engineering 1. Introductory Material 1b. The General Mole Balance Equation (GMBE) and Ideal Reactors (Fogler Chapter 1) Recap: Module 1a System with Rxn: use mole balances Input
More informationIntroduction to the course ``Theory and Development of Reactive Systems'' (Chemical Reaction Engineering - I)
Introduction to the course ``Theory and Development of Reactive Systems'' (Chemical Reaction Engineering - I) Prof. Gabriele Pannocchia Department of Civil and Industrial Engineering (DICI) University
More informationA First Course on Kinetics and Reaction Engineering Unit 4. Reaction Rates and Temperature Effects
Unit 4. Reaction Rates and Temperature Effects Overview This course is divided into four parts, I through IV. Part II is focused upon modeling the rates of chemical reactions. Unit 4 is the first unit
More informationChemical Reaction Engineering
Lecture 21 Chemical Reaction Engineering (CRE) is the field that studies the rates and mechanisms of chemical reactions and the design of the reactors in which they take place. Web Lecture 21 Class Lecture
More informationLecture 4. Mole balance: calculation of membrane reactors and unsteady state in tank reactors. Analysis of rate data
Lecture 4 Mole balance: calculation of membrane reactors and unsteady state in tank reactors. nalysis of rate data Mole alance in terms of Concentration and Molar Flow Rates Working in terms of number
More informationCHEMICAL REACTION ENGINEERING
CHEMICL RECTION ENGINEERING Unit 5 nalysis of reactor DT Collection and analysis of rate data Batch reactor for homogenous and heterogeneous reactions measurement during the unsteady-state operation Differential
More informationChemical Reaction Engineering. Lecture 2
hemical Reaction Engineering Lecture 2 General algorithm of hemical Reaction Engineering Mole balance Rate laws Stoichiometry Energy balance ombine and Solve lassification of reactions Phases involved:
More informationPHEN 612 SPRING 2008 WEEK 1 LAURENT SIMON
PHEN 612 SPRING 2008 WEEK 1 LAURENT SIMON Chapter 1 * 1.1 Rate of reactions r A A+B->C Species A, B, and C We are interested in the rate of disappearance of A The rate of reaction, ra, is the number of
More informationSupplementary Information. The role of copper particle size in low pressure methanol synthesis via CO 2 hydrogenation over Cu/ZnO catalysts
Electronic Supplementary Material (ESI) for Catalysis Science & Technology. This journal is The Royal Society of Chemistry 2014 Supplementary Information The role of copper particle size in low pressure
More informationChemical Reaction Engineering
Lecture 22 Chemical Reaction Engineering (CRE) is the field that studies the rates and mechanisms of chemical reactions and the design of the reactors in which they take place. Web Lecture 22 Class Lecture
More informationChemical Reaction Engineering. Lecture 7
hemical Reaction Engineering Lecture 7 Home problem: nitroaniline synthesis the disappearance rate of orthonitrochlorobenzene [ ] d ONB ra k ONB NH dt Stoichiometric table: [ ][ ] 3 hange Remaining* oncentration**
More informationChemical Reaction Engineering
Lecture 19 Chemical Reaction Engineering (CRE) is the field that studies the rates and mechanisms of chemical reactions and the design of the reactors in which they take place. oday s lecture Gas Phase
More informationBAE 820 Physical Principles of Environmental Systems
BAE 820 Physical Principles of Environmental Systems Acquisition of reaction rate data Dr. Zifei Liu Uncertainties in real world reaction rate data Most interesting reaction systems involves multiple reactions,
More informationH 0 r = -18,000 K cal/k mole Assume specific heats of all solutions are equal to that of water. [10]
Code No: RR320802 Set No. 1 III B.Tech II Semester Supplementary Examinations, November/December 2005 CHEMICAL REACTION ENGINEERING-I (Chemical Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE
More information5. Collection and Analysis of. Rate Data
5. Collection and nalysis of o Objectives Rate Data - Determine the reaction order and specific reaction rate from experimental data obtained from either batch or flow reactors - Describe how to analyze
More informationLecture Series. Modern Methods in Heterogeneous Catalysis. Measurement and Analysis of Kinetic Data
Lecture Series Modern Methods in Heterogeneous Catalysis Measurement and Analysis of Kinetic Data Raimund Horn Fritz-Haber-Institute of the MPG Department of Inorganic Chemistry Faradayweg 4-6 14195 Berlin
More informationA First Course on Kinetics and Reaction Engineering Example 38.2
Example 38.2 Problem Purpose This example illustrates some limitations to the use of the effectiveness factor and shows how to model an isothermal packed bed reactor by writing mole balances separately
More informationMidterm II. ChE 142 April 11, (Closed Book and notes, two 8.5 x11 sheet of notes is allowed) Printed Name
ChE 142 pril 11, 25 Midterm II (Closed Book and notes, two 8.5 x11 sheet of notes is allowed) Printed Name KEY By signing this sheet, you agree to adhere to the U.C. Berkeley Honor Code Signed Name_ KEY
More informationA First Course on Kinetics and Reaction Engineering Unit 19. Analysis of Batch Reactors
Unit 19. Analysis of Batch Reactors Overview As noted in Unit 18, batch reactor processing often follows an operational protocol that involves sequential steps much like a cooking recipe. In general, each
More informationChemical Reaction Engineering
Lecture 2 Chemical Reaction Engineering (CRE) is the field that studies the rates and mechanisms of chemical reactions and the design of the reactors in which they take place. 1 Lecture 2 Review of Lecture
More informationMathematical Modeling Of Chemical Reactors
37 Mathematical Modeling Of Chemical Reactors Keywords: Reactors, lug flow, CSTR, Conversion, Selectivity Chemical reactor calculations are based on the elementary conservation laws of matter and energy.
More informationModeling of a Fluid Catalytic Cracking (FCC) Riser Reactor
Modeling of a Fluid Catalytic Cracking (FCC) Riser Reactor Dr. Riyad Ageli Mahfud Department of Chemical Engineering- Sabrattah Zawia University Abstract: Fluid catalytic cracking (FCC) is used in petroleum
More informationTutorial Chemical Reaction Engineering:
Dipl.-Ing. ndreas Jöre Tutorial hemical Reaction Engineering: 5. Kinetics I Institute of Process Engineering, G25-27, andreas.joere@ovgu.de 22-May-4 Equilibrium: Information about what is possible but
More informationTheoretical Models of Chemical Processes
Theoretical Models of Chemical Processes Dr. M. A. A. Shoukat Choudhury 1 Rationale for Dynamic Models 1. Improve understanding of the process 2. Train Plant operating personnel 3. Develop control strategy
More informationDevelopment of Dynamic Models. Chapter 2. Illustrative Example: A Blending Process
Development of Dynamic Models Illustrative Example: A Blending Process An unsteady-state mass balance for the blending system: rate of accumulation rate of rate of = of mass in the tank mass in mass out
More informationDevelopment of Dynamic Models. Chapter 2. Illustrative Example: A Blending Process
Development of Dynamic Models Illustrative Example: A Blending Process An unsteady-state mass balance for the blending system: rate of accumulation rate of rate of = of mass in the tank mass in mass out
More information1/r plots: a brief reminder
L10-1 1/r plots: a brief reminder 1/r X target X L10-2 1/r plots: a brief reminder 1/r X target X L10-3 1/r plots: a brief reminder 1/r X target X Special Case: utocatalytic Reactions Let s assume a reaction
More informationA First Course on Kinetics and Reaction Engineering Unit 22. Analysis of Steady State CSTRs
Unit 22. Analysis of Steady State CSRs Overview Reaction engineering involves constructing an accurate mathematical model of a real world reactor and then using that model to perform an engineering task
More informationNONISOTHERMAL OPERATION OF IDEAL REACTORS Plug Flow Reactor
NONISOTHERMAL OPERATION OF IDEAL REACTORS Plug Flow Reactor T o T T o T F o, Q o F T m,q m T m T m T mo Aumption: 1. Homogeneou Sytem 2. Single Reaction 3. Steady State Two type of problem: 1. Given deired
More informationA First Course on Kinetics and Reaction Engineering Unit 12. Performing Kinetics Experiments
Unit 12. Performing Kinetics Experiments Overview Generating a valid rate expression for a reaction requires both a reactor and and an accurate mathematical model for that reactor. Unit 11 introduced the
More informationLecture 8. Mole balance: calculations of microreactors, membrane reactors and unsteady state in tank reactors
Lecture 8 Mole balance: calculations of microreactors, membrane reactors and unsteady state in tank reactors Mole alance in terms of oncentration and Molar low Rates Working in terms of number of moles
More informationCHEMICAL REACTORS - PROBLEMS OF NON IDEAL REACTORS 61-78
011-01 ourse HEMIL RETORS - PROBLEMS OF NON IDEL RETORS 61-78 61.- ccording to several experiments carried out in a continuous stirred tank reactor we suspect that the behavior of the reactor is not ideal.
More informationChemical Reaction Engineering
Lecture 24 Chemical Reaction Engineering (CRE) is the field that studies the rates and mechanisms of chemical reactions and the design of the reactors in which they take place. Web Lecture 24 Class Lecture
More informationA First Course on Kinetics and Reaction Engineering Example 30.1
Example 30.1 Problem Purpose This problem will help you determine whether you have mastered the learning objectives for this unit. It illustrates the general approach to solving the design equations for
More informationBasic Concepts in Reactor Design
Basic Concepts in Reactor Design Lecture # 01 KBK (ChE) Ch. 8 1 / 32 Introduction Objectives Learning Objectives 1 Different types of reactors 2 Fundamental concepts used in reactor design 3 Design equations
More informationReaction rate. reaction rate describes change in concentration of reactants and products with time -> r = dc j
Reaction rate ChE 400 - Reactive Process Engineering reaction rate describes change in concentration of reactants and products with time -> r = dc j /dt r is proportional to the reactant concentrations
More informationA First Course on Kinetics and Reaction Engineering Unit 33. Axial Dispersion Model
Unit 33. Axial Dispersion Model Overview In the plug flow reactor model, concentration only varies in the axial direction, and the sole causes of that variation are convection and reaction. Unit 33 describes
More information1. Introduction to Chemical Kinetics
1. Introduction to Chemical Kinetics objectives of chemical kinetics 1) Determine empirical rate laws H 2 + I 2 2HI How does the concentration of H 2, I 2, and HI change with time? 2) Determine the mechanism
More informationThermodynamics revisited
Thermodynamics revisited How can I do an energy balance for a reactor system? 1 st law of thermodynamics (differential form): de de = = dq dq--dw dw Energy: de = du + de kin + de pot + de other du = Work:
More informationChemical Reaction Engineering - Part 16 - more reactors Richard K. Herz,
Chemical Reaction Engineering - Part 16 - more reactors Richard K. Herz, rherz@ucsd.edu, www.reactorlab.net More reactors So far we have learned about the three basic types of reactors: Batch, PFR, CSTR.
More informationINTRODUCTION TO CHEMICAL PROCESS SIMULATORS
INTRODUCTION TO CHEMICAL PROCESS SIMULATORS DWSIM Chemical Process Simulator A. Carrero, N. Quirante, J. Javaloyes October 2016 Introduction to Chemical Process Simulators Contents Monday, October 3 rd
More informationBASIC DESIGN EQUATIONS FOR MULTIPHASE REACTORS
BASIC DESIGN EQUATIONS FOR MULTIPHASE REACTORS Starting Reference 1. P. A. Ramachandran and R. V. Chaudhari, Three-Phase Catalytic Reactors, Gordon and Breach Publishers, New York, (1983). 2. Nigam, K.D.P.
More information5. Coupling of Chemical Kinetics & Thermodynamics
5. Coupling of Chemical Kinetics & Thermodynamics Objectives of this section: Thermodynamics: Initial and final states are considered: - Adiabatic flame temperature - Equilibrium composition of products
More informationMass balance in a fixed bed reactor is similar to that of a plugflow reactor (eq. 1.1): dx dv. r F (1.1) Recalling dw = B dv, then. r F. dx dw (2.
Mass balance in a fixed bed reactor is similar to that of a plugflow reactor (eq..): d dv r (.) Recalling dw = B dv, then d dw r B (.) or a reaction: + bb c + dd Species eed Rate hange within Reactor Effluent
More informationNumerical Methods for Problems with Moving Fronts Orthogonal Collocation on Finite Elements
Electronic Text Provided with the Book Numerical Methods for Problems with Moving Fronts by Bruce A. Finlayson Ravenna Park Publishing, Inc., 635 22nd Ave. N. E., Seattle, WA 985-699 26-524-3375; ravenna@halcyon.com;www.halcyon.com/ravenna
More informationTOPIC 6: Chemical kinetics
TOPIC 6: Chemical kinetics Reaction rates Reaction rate laws Integrated reaction rate laws Reaction mechanism Kinetic theories Arrhenius law Catalysis Enzimatic catalysis Fuente: Cedre http://loincognito.-iles.wordpress.com/202/04/titanic-
More informationThe Material Balance for Chemical Reactors. General Mole Balance. R j. Q 1 c j1. c j0. Conservation of mass. { rate of inflow
2 / 153 The Material Balance for Chemical Reactors Copyright c 2018 by Nob Hill Publishing, LLC 1 / 153 General Mole Balance R j V Q 0 c j0 Q 1 c j1 Conservation of mass rate of accumulation of component
More informationProblems Points (Max.) Points Received
Chemical Engineering 142 Chemical Kinetics and Reaction Engineering Midterm 1 Tuesday, October 8, 2013 8:10 am-9:30 am The exam is 100 points total. Please read through the questions very carefully before
More informationPlug flow Steady-state flow. Mixed flow
1 IDEAL REACTOR TYPES Batch Plug flow Steady-state flow Mixed flow Ideal Batch Reactor It has neither inflow nor outflow of reactants or products when the reaction is being carried out. Uniform composition
More informationName. Honor Code: I have neither given nor received unauthorized aid on this examination, nor have I concealed any violations of the Honor Code.
ChE 344 Fall 014 Mid Term Exam II Wednesday, November 19, 014 Open Book Closed Notes (but one 3x5 note card), Closed Computer, Web, Home Problems and In-class Problems Name Honor Code: I have neither given
More informationA First Course on Kinetics and Reaction Engineering Example 29.3
Example 29.3 Problem Purpose This problem will help you determine whether you have mastered the learning objectives for this unit. It illustrates the analysis of a parallel reactor network and the effect
More informationThe Energy Balance for Chemical Reactors
The Energy Balance for Chemical Reactors Copyright c 2015 by Nob Hill Publishing, LLC To specify the rates of reactions in a nonisothermal reactor, we require a model to determine the temperature of the
More informationThe Energy Balance for Chemical Reactors
The Energy Balance for Chemical Reactors Copyright c 2015 by Nob Hill Publishing, LLC To specify the rates of reactions in a nonisothermal reactor, we require a model to determine the temperature of the
More information10A. EVALUATION OF REACTION RATE FORMS IN STIRRED TANK. Most of the problems associated with evaluation and determination of proper rate forms from
UPDATED 04/0/05 0A. EVALUATIO OF REACTIO RATE FORMS I STIRRED TAK REACTORS Most of the problems associated with evaluation and determination of proper rate forms from batch data are related to the difficulties
More informationMath and Numerical Methods Review
Math and Numerical Methods Review Michael Caracotsios, Ph.D. Clinical Associate Professor Chemical Engineering Department University of Illinois at Chicago Introduction In the study of chemical engineering
More informationA First Course on Kinetics and Reaction Engineering Unit D and 3-D Tubular Reactor Models
Unit 34. 2-D and 3-D Tubular Reactor Models Overview Unit 34 describes two- and three-dimensional models for tubular reactors. One limitation of the ideal PFR model is that the temperature and composition
More informationChE 344 Winter 2013 Mid Term Exam II Tuesday, April 9, 2013
ChE 344 Winter 2013 Mid Term Exam II Tuesday, April 9, 2013 Open Course Textbook Only Closed everything else (i.e., Notes, In-Class Problems and Home Problems Name Honor Code (Please sign in the space
More informationA First Course on Kinetics and Reaction Engineering Unit 2. Reaction Thermochemistry
Unit 2. Reaction Thermochemistry Overview This course is divided into four parts, I through IV. Part I reviews some topics related to chemical reactions that most students will have encountered in previous
More information28 Processes at solid surfaces
28 Processes at solid surfaces Solutions to exercises E28.b E28.2b E28.3b Discussion questions The motion of one section of a crystal past another a dislocation results in steps and terraces. See Figures
More informationChemistry 1AA3 2000/01
Chemistry 1AA3 2000/01 Tutorial #5 Answers Week of February 12-16, 2001 Dr. M.A. Brook Dr. B. E. McCarry Dr. A. Perrott 1. The equation for the reaction of NO(g) with O2(g) at 660K is: 2 NO(g) + O2(g)
More informationThe Material Balance for Chemical Reactors
The Material Balance for Chemical Reactors Copyright c 2015 by Nob Hill Publishing, LLC 1 General Mole Balance V R j Q 0 c j0 Q 1 c j1 Conservation of mass rate of accumulation of component j = + { rate
More informationThe Material Balance for Chemical Reactors. Copyright c 2015 by Nob Hill Publishing, LLC
The Material Balance for Chemical Reactors Copyright c 2015 by Nob Hill Publishing, LLC 1 General Mole Balance V R j Q 0 c j0 Q 1 c j1 Conservation of mass rate of accumulation of component j = + { rate
More informationDr. Trent L. Silbaugh, Instructor Chemical Reaction Engineering Final Exam Study Guide
Chapter 1 Mole balances: Know the definitions of the rate of reaction, rate of disappearance and rate of appearance Know what a rate law is Be able to write a general mole balance and know what each term
More information10.34 Numerical Methods Applied to Chemical Engineering
10.34 Numerical Methods Applied to Chemical Engineering Quiz 1 This quiz consists of three problems worth 0, 40 and 40 points respectively. The problem statements are found on pages, 3 and 5 in this exam
More informationCharacteristics of Chemical Equilibrium. Equilibrium is Dynamic. The Equilibrium Constant. Equilibrium and Catalysts. Chapter 14: Chemical Equilibrium
Characteristics of Chemical Equilibrium Chapter 14: Chemical Equilibrium 008 Brooks/Cole 1 008 Brooks/Cole Equilibrium is Dynamic Equilibrium is Independent of Direction of Approach Reactants convert to
More informationReactors. Reaction Classifications
Reactors Reactions are usually the heart of the chemical processes in which relatively cheap raw materials are converted to more economically favorable products. In other cases, reactions play essential
More informationA First Course on Kinetics and Reaction Engineering Example 26.3
Example 26.3 unit. Problem Purpose This problem will help you determine whether you have mastered the learning objectives for this Problem Statement A perfectly insulated tubular reactor with a diameter
More informationChemical Engineering Applications in Scilab
Chemical Engineering Applications in Scilab Prashant Dave Indian Institute of Technology Bombay (IIT Bombay) Introduction In Chemical Engineering the type of problems that occur are Modeling and Simulation
More informationChemical Kinetics and Reaction Engineering Midterm 1
Page 1 Chemical & Biomolecular Engineering 142 Chemical Kinetics and Reaction Engineering Midterm 1 Tuesday, October 4, 2011 The exam is 100 points total and 20% of the course grade. Please read through
More informationA First Course on Kinetics and Reaction Engineering Example 15.4
Example 15. roblem urpose This problem shows how to test a single parameter rate expression using kinetics data from a FR where the integrated form of the mole balance design equation cannot be properly
More informationAP CHEMISTRY CHAPTER 12 KINETICS
AP CHEMISTRY CHAPTER 12 KINETICS Thermodynamics tells us if a reaction can occur. Kinetics tells us how quickly the reaction occurs. Some reactions that are thermodynamically feasible are kinetically so
More informationCHE 404 Chemical Reaction Engineering. Chapter 8 Steady-State Nonisothermal Reactor Design
Textbook: Elements of Chemical Reaction Engineering, 4 th Edition 1 CHE 404 Chemical Reaction Engineering Chapter 8 Steady-State Nonisothermal Reactor Design Contents 2 PART 1. Steady-State Energy Balance
More informationChemical Reaction Engineering
CHPTE 7 Chemical eaction Engineering (Gate 00). The conversion for a second order, irreversible reaction (constant volume) () k B, in batch mode is given by k C t o ( kcot) (C) k C t o + (D) kcot (B) k
More informationA First Course on Kinetics and Reaction Engineering Example 33.1
Example 33.1 Problem Purpose This problem will help you determine whether you have mastered the learning objectives for this unit. It illustrates the analysis of a tubular reactor using the ial dispersion
More informationChemical reaction equilibria
Chemical reaction equilibria Chemical reaction equilibria in metallurgical processes and the conditions that maintain equilibrium are important to obtain maximum efficiency from production processes For
More informationFinal Exam May 4, 2016
1 Math 425 / AMCS 525 Dr. DeTurck Final Exam May 4, 2016 You may use your book and notes on this exam. Show your work in the exam book. Work only the problems that correspond to the section that you prepared.
More informationExam 2 Solutions. for a gas obeying the equation of state. Z = PV m RT = 1 + BP + CP 2,
Chemistry 360 Dr. Jean M. Standard Fall 016 Name KEY 1.) (14 points) Determine # H & % ( $ ' Exam Solutions for a gas obeying the equation of state Z = V m R = 1 + B + C, where B and C are constants. Since
More informationA First Course on Kinetics and Reaction Engineering Example 38.1
Example 38.1 Problem Purpose This example illustrates the calculation of the effectiveness factor and demonstrates its use in the ideal PFR design equations for a first-order reaction with spherical catalyst
More informationTheoretical Models for Chemical Kinetics
Theoretical Models for Chemical Kinetics Thus far we have calculated rate laws, rate constants, reaction orders, etc. based on observations of macroscopic properties, but what is happening at the molecular
More informationPFR with inter stage cooling: Example 8.6, with some modifications
PFR with inter stage cooling: Example 8.6, with some modifications Consider the following liquid phase elementary reaction: A B. It is an exothermic reaction with H = -2 kcal/mol. The feed is pure A, at
More informationHW Help. How do you want to run the separation? Safety Issues? Ease of Processing
HW Help Perform Gross Profitability Analysis on NaOH + CH4 --> Na+CO+H NaOH+C-->Na+CO+1/H NaOH+1/ H-->Na+HO NaOH + CO Na+CO+1/H How do you want to run the reaction? NaOH - Solid, Liquid or Gas T for ΔGrxn
More information