Section 1
528kb

Acknowledgments

Abstract

1.

Introduction

1.1

Fixed Bed Reactors

1.2

Scope of the Work

2.

Literature Review

2.1

Design and Operating Principles for Multi-tubular Fixed Bed Reactors

2.2

Reactor Modeling

2.2.1

Introduction

2.2.2

Model structures

2.2.2.1

Fluid phase model classes

2.2.2.2

Solid phase modeling

2.2.3

Dispersion models

2.2.3.1

Transport processes in packed beds

2.2.3.2

Model equations

Section 2
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2.2.3.3

Model parameters

2.2.3.3.1

2.2.3.3.2

2.2.4

Radial heat transfer in packed beds - Conflicts of evidence

2.2.5

Radial Non-uniformity in packed beds

2.2.5.1

Void fraction

2.2.5.2

Velocity

2.2.5.3

Radial dispersion

2.2.6

Heat transfer at the wall

2.2.7

Summary - The wall heat conduction model

2.3

Fischer Tropsch Kinetics

2.3.1

Reactions and Stoichiometry

2.3.2

Reaction mechanism

Section 3
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2.3.3

Kinetics

2.3.4

Selectivity

2.3.5

Kinetic expressions and parameter estimation

3.

Fixed Bed Pilot Reactor

3.1

Introduction

3.2

General Description

3.3

Reactor and Oil Circulation System

3.4

Data Acquisition and Control System

3.5

Analysis System

3.6

Experimental

4.

Reactor Model Implementation

4.1

Model Equations

4.2

Numerical Solution

4.2.1

Discretization of the model equations

Section 4
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4.2.2

Solution of the reactor model

4.3

Program Structure

4.4

Parameters

5.

Results and Discussion

5.1

Introduction

5.2

Experimental Results

5.3

Kinetics

5.3.1

Reactions and Stoichiometry

5.3.2

Model and parameter selection

Section 5
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5.3.3

Rate expressions and parameter estimation

5.3.4

Effect of internal pellet Diffusional resistance

5.4

Heat Transfer

5.4.1

Introduction

5.4.2

Parameters and correlations

5.4.3

Results

Section 6
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6.

Conclusions

7.

References

List of Symbols and Abbreviations

Appendices 422kb