Volume II provides
a reference manual for all aspects of cyclone
technology, science and design.
Practical aspects
of cyclone installations are covered together
with a balanced assessment of the current state
of scientific knowledge and methods of predicting
equipment performance and operation.
Gas cyclones are
amongst the most commonly used types of gas cleaning
equipment. They are cheap to build and easy to
operate. They can be made from most structural
materials to give them protection from a wide
range of adverse process conditions. They suffer
from the significant disadvantage that their efficiency
falls off rapidly as the particle size drops below
about 10 micrometers. As a result, it is necessary
to have precise design procedures available so
that decisions on whether to take advantage of
the economic benefits of cyclones may be made
with certainty.
Volume
GC II Part 1 Introduction.
Part 1 gives a brief introduction
on how to use the rest of the volume.
Volume
GC II Part 2 State of the art.
This part gives details
of the different types of cyclones and discusses the
operating practices employed. It also examines the practical
aspects of cyclone installations and provides information
which allows problems associated with cyclones to be
diagnosed and corrected.
Volume
GC II Part 3 State
of the science.
This part contains an in-depth
review of models, both theoretical and empirical, used
for cyclone performance. It discusses how these models
can be used in semi-empirical design procedures using
scaling techniques. Relevant experimental work is also
discussed.
Volume
GC II Part 4 The SPS
reverse flow gas cyclone design procedure.
This report
provides, for the first time, an accurate, scientifically
based, design procedure which, to a large extent, is
independent of the geometry of the unit being considered.
A new theoretical approach to cyclone design is outlined
which builds upon the best of the previously available
theories. This approach is then used to show how the
grade efficiency results obtained from one geometry
of cyclone can be scaled to other geometries. Agreement
of the 50% efficiency point is generally good. Differences
in the slope of the grade efficiency curves are accounted
for and used to construct a phase diagram which allows
an engineer the opportunity to match the geometry of
the cyclone to his process requirements. Several standard
sets of geometries are provided to enable prediction
of the likely pressure drop.
This part
also gives details of how this is implemented in the
CYCLONE design microcomputer program, which has now
been updated and rewritten as Windows AEA-ToolKit application.
