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A Project On Construction Of Propeller Agitator
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CHAPTER ONE
1.0 INTRODUCTION
Propeller agitator
mixing is one of the most common operations carried out in chemical,
processing and allied industries. The terms “mixing†is applied to the
processes used to reduce the degree of non uniformity or gradual of a
property in a system such as concentration, viscosity, temperature and
so on.
Mixing is achieved by moving material from one
region to another. It may be of interests simply as a means of
achieving a desired degree of homogeneity or it may be used two proote
heat undergoing a chemical reaction.
At the outset I t is
useful to consider some common examples of problems encountered in
industrial mixing operations, since this will nto only reveal the
ubiquitous nature of the process but will also provide an appreciation
of some of the associated. Difficulties. Several attempts have been
made to classify mixing problems, and for example “REAVELL†used as a
criterion for mixing of powders, the flowability of the final products,
HARNEY et al based their classification on the phases present, that is
liquid – liquid, solid – liquid and so on. This is probably the most
useful description of mixing as it allows the adoption of a unified
approach to the problems encountered in a range of industries.
The term agitation is applied to a variety of operations differing in
the degree of homogeneity of the mixed material. In chemical
engineering, it is conventional to treat agitation and multi purpose
operations for which the principles of equipment design and operation
can be stated generally, such operations in agitation like
crystallization, Ion exchange and colliding are advanced of this study
and construction.
In most homes, industries and chemical
operations, two or more substances are required to be mixed for users
demand, in mixing as a unit operation, the substance is fed into the
vessel or mixing tank containing the agitator in either one form,
liquid, solid or gas. The product obtained should either be homogenous
or heterogeneous depending on demand or desired product.
The selection of a particular agitator for a particular purpose
requirement, the flow properties of the process fluid, equipment cost
and the construction material required must be considered. Ideally, the
equipment chosen should be that which has the lowest cost but meets all
process requirement. In a given problem, the agitator given must
handle the material when it is in it’s worst condition and may not be so
effective as other design during other parts of mixing cycle. As with
other equipments, the choice of an agitator for heavy material is always
a compromise and arbitrary.
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ABSRACT - [ Total Page(s): 1 ] Propeller agitator is a specialized of various types of substances. It consists of three basic components which are the shaft, blade and the vessel. In the construction, mild steel was chosen due to it’s inherent properties. After the procurement, the following constructional operations were carried out which included marking out, center punching folding, welding, filling operation, assembling, and painting to beautify the equipment and for other purposes. ... Continue reading---
