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Full Project – CONSTRUCTION OF A FLUIDZED BED REACTOR

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ABSTRACT

The project is the construction of fluidised bed reactor. After a detailed research mild steel was chosen as the material of construction based on its inherent properties. The construction process entitles the marketing out of the sheet to the specified dimensions. This was followed by center punching and cutting. The sheets are then joined together after rolling by welding. Finally, surface treatment like painting was carried out to give it a brighter colour and durable property. The dimension are:

Area of upper Nozzle = 4.56m2

Weir length of the nozzle = 0.16m

Area of upper frustrum = 4.36m2

Area of cylinder/vessel = 47.03m2

Weir length of cylinder/vessel = 0.29m

Area of the lower nozzle = 4.56m2

Weir length of lower nozzle = 0.31m

Area of the lower frustrum = 4.35m2

Radius of the perforated bed = 0.15m

Diameter of the perforation = 0.0251mm

Ration of length to Diameter is 2.1

The heat transfer coefficient of the material is 200w/m20C

The reactor constructed is a type of reactor that can be use to carry out a variety of multiphase chemical reaction example cracking of petroleum

TABLE OF CONTENTS

Title page – – – – – – – – i

Letter of transmittal – – – – – – ii

Approval page – – – – – – – – iii

Dedication – – – – – – – – iv

Acknowledgement – – – – – – – v

Abstract – – – – – – – – – vi

Table of contents – – – – – – – vii

Nomenclature – – – – – – – – xi

CHAPTER ONE: INTRODUCTION

1.1 Background of the study – – – – 1

1.2 Statement of the problem – – – – 2

1.3 Purpose/Aims of the study – – – – 2

1.4 Scope and limitation of the study – – – 3

1.5 Method of construction of the study – – 5

1.6 Significance of the study – – – – – 7

CHAPTER TWO: LITERATURE REVIEW

2.1 Reactor – – – – – – – – 8

2.2 Classification of reactor – – – – – 9

2.2.1 Reactor types – – – – – – 9

2.2.2 Principle type of reactor – – – – 10

2.2.3 Homogenous and hetrogenous reactor – – 10

2.2.4 Mode of operation – – – – – – 12

2.2.5 Reactor geometry (type) – – – – 13

2.3 Fluidised bed reactor – – – – – 14

2.3.1 Basic principle of fluidized bed – – – 19

2.3.2 Design procedure – – – – – – 20

2.3.3 Fluidised bed reactor for mixing gas – – 22

2.4 Fluidisation – – – – – – – 24

2.5 Mode of operation of fluidised bed reactor – 26

2.6 Advantages of fluidized bed reactor – – 28

2.7 Disadvantages of fluidised bed reactor – – 29

2.8 Uses of fluidized bed reactor. – – – – 32

CHAPTER THREE: SELECTION OF MATERIAL

3.1 Engineering materials – – – – – 34

3.1.1 Classification of engineering material – – 34

3.1.2 Metals and alloys – – – – – – 36

3.1.3 Ceramic and organic polymer – – – 36

3.1.4 Organic materials – – – – – – 36

3.1.5 Inorganic materials – – – – – 36

3.1.6 Biological materials – – – – – 36

3.1.7 Biomaterial – – – – – – – 36

3.1.8 Advance material – – – – – – 37

3.1.9 General properties of engineering materials – 37

3.2 Material selected – – – – – – 43

3.21 Factors considered for the selected of material 44

3.22 Reason for the material selected – – – 45

CHAPTER FOUR: CONSTRUCTIONAL PROCEDURE

4.1 Tools and materials used – – – – 47

4.2 Steps of fabrication process – – – – 47

4.3 Precaution taken during fabrication – – 49

CHAPTER FIVE

5.0 Discussion – – – – – – – 51

5.1 Conclusion – – – – – – – 53

5.2 Recommendation – – – – – – 54

REFERENCES – – – – – – 56

NOMENCLATURE

 = Pie ca constant with value of 22/7

R = Radius of the cylinder/vessels (in inches)

H = Height of a cylinder/vessel

L = Length of a rectangular plate

W = Width of the rectangular plate used

R2 = Radiius of the upper and lower nozzle

H2 = Height of the upper and lower nozzle

L2 = Length of the rectangular of plate used

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