ABSTRACT
The construction of propeller agitator used for agitating and mixing of low viscous fluid was fabricated in the mechanical workshop of the institute of management and technology Enugu.
In the construction, galvanized mild steel was chosen due to its inherent properties. After procurement, the following constructional operations were carried out; working drawing, marking, center punching folding, welding and finally subjected to finishing touched of the mixer which was sand papering and painting for beautification and corrosion resistance.
The shape and form of the mixer were from the formulation of the different components which are shaft height 530mm, blade diameter = 280mm, vessel diameter = 315mm, vessel height =, 36mm, length of buffle 300mm.
The constructed agitator has a high efficiency when subjected to test comparable to those produced industrially. The estimated rate of rotation in Vpm.
The cost of the mixer is however minimized due to the preferred choice of the raw materials and method of fabrication. Although this approach did not compromise in any form the efficiency of the mixer. It can therefore be used for small scale industries and laboratories.
TABLE OF CONTENTS CHAPTER ONE
1.0 Introduction
1.1 Scope and objective of project
CHAPTER TWO
2.0 Literature survey
2.1 Historical review of mixing / mixers
2.2 Theory of mixing
2.3 Types of mixers
2.4 Purpose of mixing
2.5 Mixer effectiveness and mixing index
2.6 Mixing degree
2.7 Mixing rate
2.8 Power consumption
2.9 Material for construction
CHAPTER THREE
3.1 Fabrication procedure
3.2 Analysis / maintenance
CHAPTER FOUR
4.1 Cost analysis
4.2 Discussion
4.3 Recommendation
4.4 Conclusion
References
CHAPTER ONE
1.0 INTRODUCTION
In unit operation, mixing of two or more substances have posed difficulty in chemical engineering process. Because of the problem encountered during the process. Industrial equipment are being designed from experience rather than the fundamental theory because of the high dependency on the effective mixing of fluids and solids in unit operation process.
The term mixing, is applied in preparation of uniform combination of two or more material, which may differ in degree of homogeneity of mixed material. The product from the process may be homogenous or heterogeneous.
In most chemical industries, factories even homes, two or more substances are expected to be properly mixed for a specific purpose. To enhance these process, experimental agitation were developed to serve a broad practical and basic fluid mixing problems. In process operation, he action of agitation enable one to predict the performance of a full equipment or help in establishing more general correlation in fundamental studies.