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Maintenance of pilot plant spray dryer
ABSTRACT
Spray substance are used to make home
grnow powered substance whose particles are usually spherical in shape and
approximately 10-40 micro s.
The maintenance of pilot plant spray
dryer was stated with observation of the faults in the spray dryer.
The faulty components were dismantled,
serviced and the faulty parts maintained in order to increase it’s life
span.
TABLE OF CONTENTS
Introduction
Chapter one
Literature review Chapter
two
Maintenance procedure
Chapter three
Conclusion and recommendations Chapter
four
References.
CHAPTER ONE
INTRODUCTION
A spray dryer is a complex instrument
with different component. In most developed countries the presence of
sophisticated spray dryer enhance the production of various plant which are in
demand by developing countries.
Spray dryers are used to make homogenous powered
substance whose particles are usually spherical in shape and approximately
10-140 micros. A spray dryer is used in chemical and foods processing to
manufacture dried egges powdered milk, animals feed, cake mixes citrus juices,
coffes cornyrup, cream, cramers, fish concentrate, infant formulas, potatoes
shortening, starch derivatives, tea, tomato, pure, yeast and yogurt.
The spray drying process being as preheated
solution is pumped to the atomizer. The atomizen increase the surface
area of the solution by creating a fine mist. The mist is sprayed into a
chamber of air heated to a temperature above the vapourizalion temperature of
the solutions solvent. As the mist contacts the hot air, the sovent (typically
water) vapourizes.
The rate of soluent vapourization is dependent upon
the solution flow rate, temperature of solution, flow rate of air temperature
of air, size of the mist droplet, and total solid concentration.
The vaporized solution and drive particles are then
removed from the chamber. A cyclone separates the entrained particles
from the humid air. The dry particles are force to the bottom of the
cyclone separator and the air is expelled to the atmosphere or goes to a scrubber.
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