Problem 1 Marks: 60 Section: 1a): 30 marks, Section 1b):30 marks A laboratory scale fluidized bed is considered for studying a catalytic ozone decomposition. a) It is requested to derive model equations under the following assumptions: ■ Operation of the catalytic reactor under steady state conditions, There is no influence of thermal ozone decomposition reactions. The fluidized bed includes bubbles and dense phase. □ The dense phase can be simulated using a CSTR The fluidized bed bubbles contain catalyst particles and can be simulated as a DSTR (batch). □ The jets contain particles and can be simulated with a PFR. The influence of the freeboard has to be considered using a PFR model. The available catalytic reaction rate model is r (moles/gcat.s)= -k CA b) Same than on a) under unsteady state conditions, using an absorbable and reactive tracer. Note: A step-by step derivation of the model equations is required here. A quick answer will not do. Problem 2 Marks: 40 Section 2a: 30 marks, Section 2b: 10 marks A liquid phase polymerization process is developed in a series of: a) 1CSTR with V₁ volume (initiation) at T₁ temperature, b) 1 CSTR with V2 volume (propagation) at T2 temperature, c) 1CSTR with V3 volume (termination) and T3 temperature. Kinetic model: r (moles/cm³s)= -k CA with k=ko exp(-E/RT). This configuration is being studied using non-reactive and reactive tracer experiments, a) Derive the G(s) transfer function from species balances using step function for both non-reactive and reactive tracers. b) Is the type of non-reactive tracer injection (e.g. pulse, step, arbitrary shape) going to affect G(s)? Provide a detailed explanation. Note: A step-by step derivation of the model equations is required here. A quick answer will not do.
Problem 1 Marks: 60 Section: 1a): 30 marks, Section 1b):30 marks A laboratory scale fluidized bed is considered for studying a catalytic ozone decomposition. a) It is requested to derive model equations under the following assumptions: ■ Operation of the catalytic reactor under steady state conditions, There is no influence of thermal ozone decomposition reactions. The fluidized bed includes bubbles and dense phase. □ The dense phase can be simulated using a CSTR The fluidized bed bubbles contain catalyst particles and can be simulated as a DSTR (batch). □ The jets contain particles and can be simulated with a PFR. The influence of the freeboard has to be considered using a PFR model. The available catalytic reaction rate model is r (moles/gcat.s)= -k CA b) Same than on a) under unsteady state conditions, using an absorbable and reactive tracer. Note: A step-by step derivation of the model equations is required here. A quick answer will not do. Problem 2 Marks: 40 Section 2a: 30 marks, Section 2b: 10 marks A liquid phase polymerization process is developed in a series of: a) 1CSTR with V₁ volume (initiation) at T₁ temperature, b) 1 CSTR with V2 volume (propagation) at T2 temperature, c) 1CSTR with V3 volume (termination) and T3 temperature. Kinetic model: r (moles/cm³s)= -k CA with k=ko exp(-E/RT). This configuration is being studied using non-reactive and reactive tracer experiments, a) Derive the G(s) transfer function from species balances using step function for both non-reactive and reactive tracers. b) Is the type of non-reactive tracer injection (e.g. pulse, step, arbitrary shape) going to affect G(s)? Provide a detailed explanation. Note: A step-by step derivation of the model equations is required here. A quick answer will not do.
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Question

Transcribed Image Text:Problem 1
Marks: 60
Section: 1a): 30 marks, Section 1b):30 marks
A laboratory scale fluidized bed is considered for studying a catalytic ozone decomposition.
a) It is requested to derive model equations under the following assumptions:
■ Operation of the catalytic reactor under steady state conditions,
There is no influence of thermal ozone decomposition reactions.
The fluidized bed includes bubbles and dense phase.
□ The dense phase can be simulated using a CSTR
The fluidized bed bubbles contain catalyst particles and can be simulated as a DSTR (batch).
□ The jets contain particles and can be simulated with a PFR.
The influence of the freeboard has to be considered using a PFR model.
The available catalytic reaction rate model is r (moles/gcat.s)= -k CA
b) Same than on a) under unsteady state conditions, using an absorbable and reactive tracer.
Note: A step-by step derivation of the model equations is required here. A quick answer will not do.
Problem 2 Marks: 40
Section 2a: 30 marks, Section 2b: 10 marks
A liquid phase polymerization process is developed in a series of: a) 1CSTR with V₁ volume (initiation)
at T₁ temperature, b) 1 CSTR with V2 volume (propagation) at T2 temperature, c) 1CSTR with V3
volume (termination) and T3 temperature. Kinetic model: r (moles/cm³s)= -k CA with k=ko exp(-E/RT).
This configuration is being studied using non-reactive and reactive tracer experiments,
a) Derive the G(s) transfer function from species balances using step function for both non-reactive
and reactive tracers.
b) Is the type of non-reactive tracer injection (e.g. pulse, step, arbitrary shape) going to affect G(s)?
Provide a detailed explanation.
Note: A step-by step derivation of the model equations is required here. A quick answer will not do.
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