Improvements in Boilers for Utilizing the Waste Heat of Kilns or Ovens for Burning Cement, Lime, Bricks, and other Materials.
Year: 1889

page_text: Date of Application, 27th Nov., 1889
Complete Specification Left, 26th Sept., 1890-Accepted, 1st Nov., 1890
PROVISIONAL SPECIFICATION.
Improvements in Boilers for Utilizing the Waste Heat of Kilns or
Ovens for Burning Cement, Lime, Bricks, and other Materials.
I, WILLIAM SAVIDGE AKERMAN, of Oakfield, Wembdon, Bridgwater, in the County
of Somerset, Cement Manufacturer, do hereby declare the nature of this invention
to be as follows:-
My invention relates to boilers which are adapted to be applied to kilns or ovens
for burning cement, lime, bricks and other materials and has for its object to provide
a boiler which will withstand the internal heat of the kiln or oven; which shall be
smooth and free from rivets or laps; which shall have a rapid circulation; which
shall be incapable of accumulating mud or sediment at any part in proximity to the
fire; and which can be readily repaired.
In carrying out my invention I advantageously arrange at each extremity of that
portion of the kiln at which the heat is to be utilized a series of holders or receivers,
which are connected together.
The said holders or receivers of the two series are also connected by vertical pipes,
which are so arranged as to form practically a lining for the interior of that portion
of the kiln through which they extend, so that the heat in this part of the kiln will
cause the heating of the water in these vertical pipes.
In order to provide for the perfect circulation of the water the two series of holders
are also connected by auxiliary pipes.
The pipes which form the lining are arranged so that they can be readily removed
and replaced by others.
Instead of the holders or receivers hereinbefore mentioned I may use in
conjunction with the tubes forming the lining any other desirable form of water
receiver.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Boilers for Utilizing the Waste Heat of Kilus or
Ovens for Burning Cement, Lime, Bricks, and other Materials.
I, WILLIAM SAVIDGE AKERMAN, of Oakfield, Wembdon, Bridgwater, in the County
of Somerset, Cement Manufacturer, do hereby declare the nature of this invention
and in what manner the same is to be performed to be particularly described and
ascertained in and by the following statement :—
My invention relates to boilers which are adapted to be applied to kilns or ovens
for burning cement, lime, bricks and other materials, and has for its object to
provide a boiler which will withstand the internal heat of the kiln or oven; which
shall be smooth and free from rivets or laps; which shall have a rapid circulation ;
which shall be incapable of accumulating mud or sediment at any part in proximity
to the fire; and which can be readily repaired.
In carrying out my invention I advantageously arrange, adjacent to each extremity
of that portion of the kiln at which the heat is to be utilized, a series of holders
or receivers connected together.
The said holders or receivers of the two series are connected by vertical pipes,
which are so arranged as to form practically a face or lining for the interior of
077

page_text: that portion of the kiln through which they extend, so that the heat in this part
of the kiln will cause the heating of the water in these vertical pipes.
In order to provide for the perfect circulation of the water, the two series of
holders are also connected by auxiliary pipes.
To enable my invention to be fully understood I will describe the same with
reference to the accompanying drawings, in which :-
Figure 1 is a plan view of a boiler, constructed according to my invention, and
shewn as applied to a cement kiln:
Figure 2 is a vertical section of the same; and,
Figure 3 is a vertical section of a modified form of boiler.
Similar letters of reference indicate corresponding parts in the several figures.
a, a, a, a and b, b, b, b are the two series of receivers, and c, c are the tubes
connecting the receivers of the two series together, which tubes, as shewn, lie
closely together (to allow of which adjacent tubes are jointed to the receivers at
different levels) but which are preferably placed so that spaces are left between them.
These tubes are bent in such a manner as to form the wall or lining of the upper
part of the kiln, and are secured in place by nuts on the insides of the receivers or
by other suitable means which allow of their ready removal and replacement.
d, d are the auxiliary tubes to which the receivers of each series are connected
and which also serve to establish communication between the two series of receivers.
e indicates the lower part of the kiln, the brick lining of which part is preferably
carried upwards as far as the tubes c, c, as indicated at f, in order to protect the
receivers b, b from very extreme heat.
g is a steam-receiver connected to the upper series of water receivers a, a; and h
is a plate or platform covering the top of the boiler and kiln, and provided with a
suitable aperture i over the mouth of the kiln.
k, k are manholes formed in the receivers a, a, b, b and provided with covers for
affording access to the interior of the receivers for removing mud or sediment and
for effecting repairs.
With the arrangement hereinbefore described it will be obvious that, as the water
in the tubes c, c is heated, the circulation takes place upwards through the said
tubes c, c into the receivers a, a, thence downwards through the auxiliary tubes into
the receivers b and thence again through the tubes c, and that owing to the arrange-
ment of the tubes c, c no mud or sediment can accumulate therein beyond that which
frequently deposits in the form of scale, and which can be prevented by the use of a
suitable "anti-incrustation" composition.
I wish it understood that I do not confine my invention to the arrangement of
receivers shewn in Figures 1 and 2, as the various receivers of each series of receivers
may be disconnected so that the corresponding upper and lower receivers with their
connected heating tubes form sections which are independent of each other. Also
instead of employing a series of receivers at the top and bottom I may employ
single receiver only at the top and bottom, and in some cases separate receivers may
be entirely dispensed with, the tubes c, c being connected to a receiver of the kind
shewn in Figure 3 which, as represented, is of cylindrical shape.
a
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:
1. The combination with a kiln or oven for burning cement, lime, bricks and other
materials, of a boiler having a series of heating tubes so arranged as to form the
interior face or lining of the whole or a portion of such kiln or oven, substantially as
described.
2. A boiler for utilizing the waste heat of kilns or ovens for burning cement, lime,
bricks and other materials, comprising a series of tubes arranged close together so
as to form the whole or part of the internal face or lining of the kiln or oven to which
it is applied, the said tubes being connected at their ends with suitable water holders
or receivers, substantially in the manner described.

page_text: 3. The combination with a kiln or oven for burning cement, lime, bricks and other
materials, of a boiler constructed substantially in the manner hereinbefore described
and illustrated in Figures 1 and 2, or in Figure 3 of the accompanying drawings.
Dated the 26th day of September 1890.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.