A Novel or Improved Apparatus Constituting a Combined Boiler and Gas Producer for the Generation of Steam and the Production of Gas, whether used in Combination or for Separate Purposes.
Year: 1892

page_text: Date of Application, 2nd Feb., 1892
Complete Specification Left, 2nd Nov., 1892-Accepted, 28th Jan., 1893
PROVISIONAL SPECIFICATION.
A Novel or Improved Apparatus Constituting a Combined Boiler and
Gas Producer for the Generation of Steam and the Production of
Gas, whether used in Combination or for Separate Purposes.
We, WILLIAM COULTAS, of Lorne Terrace, Stockton-on-Tees, Contractor,
THOMAS SIDDELL, Foreman Bricklayer, and JOHN LAW SMITH, Works Manager,
both of the West Hartlepool Rolling Mills, West Hartlepool, and all in the County
of Durham, do hereby declare the nature of this invention to be as follows:-
Our invention relates to the construction of a boiler and gas producer combined
in one apparatus to be employed for the generation of steam and production of gas,
to be used either in combination which would be applicable to the manufacture of
steel and iron, or to be used separately which would be applicable for firing marine
boilers as hereinafter described.
We will first describe our invention with reference to its application to the
manufacture of steel and iron. According to the existing arrangement and con-
struction of gas producers employed in connection with steel and iron furnaces, the
producer consists of a separate structure built up with brickwork and connected
to a boiler for the supply of steam which is injected for effecting the decomposition
of the incandescent carbonaceous matter within the gas producer.
This arrange-
ment involves a great amount of waste heat and it is found in practice that the
residue of materials adhere in the form of clinkers to the brick walls of the producer
in such a manner that the brickwork requires frequent renewal.
The object of our invention is to effect economy in the construction and working
of gas producers, and consists in enclosing the producer within an annular boiler in
such a manner that the space enclosed by the inner shell of the boiler serves as the
producer, so that a proportion of the heat generated in the producer, which at
present expends its energy in destroying the walls thereof, by our invention is
absorbed into the water of the boiler and is thus utilized in supplying the producer
with steam; added to which all brickwork is dispensed with, and the residue of
materials fall to the bottom of the producer instead of adhering as clinkers to the
sides thereof.
In carrying our invention into effect, instead of building up the gas producer of
brickwork as has hitherto been the case, we construct the gas producer within the
inner shell of an annular or similarly constructed boiler; this inner boiler shell is
itself enclosed within an outer boiler shell of larger diameter, the space between
these two shells forming a water space surrounding the gas producer. The crown
of the producer is furnished with the usual charging hopper for charging fuel into
the producer.
The heat derived from the combustion of the fuel within the gas producer
generates steam in the annular water space, which steam is conveyed into a dome
or bulb shaped vessel provided above the crown of the boiler from which it is led
down a suitable passage into a bell mouthed air and steam inlet pipe communicating
with the usual bridge plate at the bottom of the producer. This bridge plate is
furnished with the usual outlets or passages for the delivery of air and steam
into the mass of fuel so as to direct the currents upwards through the mass of the
fuel in the producer. The usual stoking holes are provided in the crown of the
gas producer, through which bars may be introduced from time to time for breaking
up the fuel and stoking the fire.
By constructing a combined boiler and gas producer according to our invention a
high pressure and corresponding temperature of steam is obtained by the useful
annlication of what has hitherto been waste beat and the residue of materials do

page_text: not adhere in the form of clinkers to the iron or steel plates which form the internal
wall or lining of the gas producer as is the case when the gas producer is built up
of brickwork.
It will be obvious from the above description that the combined boiler and gas
producer constructed according to our invention as hereinbefore described is
applicable to the production of combustible gas for heating purposes generally, and
can be advantageously used for marine boilers, in which case the gas from the
producer is delivered into the flues of the boiler, whilst the steam generated in the
boiler is delivered into the marine boiler as an auxilliary supply.
Dated this 1st day of Wohnun1000
G. J. CLARKSON,
Stockton-on-Tees, Agent for the Applicants.
COMPLETE SPECIFICATION.
A Novel or Improved Apparatus Constituting a Combined Boiler and
Gas Producer for the Generation of Steam and the Production of
Gas, whether used in Combination or for Separate Purposes.
We, WILLIAM COULTAS, of Lorne Terrace, Stockton-on-Tees, Contractor,
THOMAS SIDDELL, Foreman Bricklayer, and JOHN LAW SMITH, Works Manager,
both of the West Hartlepool Rolling Mills, West Hartlepool, and all in the
County of Durham, 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:-
Our invention relates to the construction of a boiler and gas producer combined
in one apparatus to be employed for the generation of steam and production of
gas, to be used either in combination which would be applicable to the manufacture
of steel and iron, or to be used separately which would be applicable for firing
marine boilers as hereinafter described.
We will first describe our invention with reference to its application to the
manufacture of steel and iron. According to the existing arrangement and con-
struction of gas producers employed in connection with steel and iron furnaces, the
producer consists of a separate structure built up with brickwork and connected to
a boiler for the supply of steam which is injected for effecting the decomposition
of the incandescent carbonaceous matter within the gas producer. This arrange-
ment involves a great waste of heat, and it is found in practice that the combustible
properties of the gas are liable to be injured by the overheating of the brickwork
and that the residue of materials adhere in the form of clinkers to the brick
walls of the producer in such a manner that the brickwork requires frequent
renewal.
The object of our invention is to effect economy in the construction and working
of gas producers, and consists in enclosing the producer within a boiler or water
jacket in such a manner that the space enclosed by the inner shell of the boiler
serves as the producer, so that a proportion of the heat generated in the producer,
which at present expends its energy in destroying the walls thereof, by our inven-
tion is absorbed into the water of the boiler and is thus utilized in supplying the
producer with steam; added to which all brickwork is dispensed with, and the
residue of materials fall to the bottom of the producer instead of adhering as
clinkers to the sides thereof, and the internal surface of the gas producer is
prevented from reaching a temperature injurious to the combustible properties of
the gas.
And in order that our invention may be clearly understood and readily carried
into effect, we will now proceed to describe the same with reference to the
accompanying drawing, in which
Figure 1 is a sectional view of a convenient form of our combined gas producer
and boiler, and

page_text: Figure 2 is a corresponding view in plan.
Instead of building up the gas producer of brickwork as has hitherto been the
case, we construct the gas producer within the inner shell a of an annular or
similarly constructed boiler; this inner shell is itself enclosed within an outer
boiler shell 6 of larger diameter, the space between these two shells forming a
water jacket C surrounding the gas producer D. The crown of the producer is
furnished with the usual charging hopper c and bell d for charging fuel into the
producer. The heat derived from the combustion of the fuel in the gas producer
generates steam in the annular water space C, a sufficient quantity of which steam
is conveyed into a dome or other suitably shaped vessel e provided above the
crown of the boiler, from which it passes down one or more pipes finto corre-
sponding bell mouthed air and steam injector pipes g communicating with the
usual bridge plate h at the centre of the producer floor. This bridge plate h is
furnished with outlets or passages ¹ for the discharge of the mixture of air and
steam into the mass of fuel in the gas producer. The holes k represent the usual
stoking holes provided in the crown of the gas producer, through which bars are
introduced from time to time for breaking up the fuel and stoking the fire, and the
holes are provided for cleaning out the residual materials which accumulate at
the lower part of the gas producer, and 7 is the flue by which the gases pass out
of the producer to be utilized, as for instance in the smelting chamber of a steel
furnace. By constructing a combined boiler and gas producer according to our
invention as above described, we obtain a high pressure and corresponding
temperature of steam by the useful application of what has hitherto been waste
heat, added to which the internal surface of the producer consisting of iron or
steel plates which are everywhere in contact with the water is not liable to reach
a temperature injurious to the combustible properties of the gas immediately in
contact therewith, and the residue of materials do not adhere in the form of
clinkers to the said plates, as in the case when the gas producer is built up of
brickwork.
It will be obvious from the above description that the combined boiler and gas
producer constructed according to our invention as hereinbefore described is
applicable to the production of combustible gas for heating purposes generally, and
can be advantageously used for marine boilers in which case the gas from the
producer is delivered into the flues of the boiler, whilst the surplus steam
generated in the boiler is delivered into the marine boiler as an auxilliary supply.
We would also have it understood that we do not restrict ourselves to the
particular form of apparatus shown in the drawing which is to be taken as an
example of a convenient and useful form of apparatus which may be modified both
in general design and arrangement of details without departing from our invention
so long as the gas producer is enclosed within a water jacket which can be
adapted for the purpose of a steam generator.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
The arrangement and combination of parts constituting a combined boiler and
gas producer in which the boiler takes the form of a water jacket to the gas
producer which is enclosed within the inner shell thereof so that both gas and
steam are produced to be used in combination or for separate purposes, substantially
as and for the purpose as hereinbefore described and illustrated by way of example
in the accompanying drawing.
Dated thin 1st don of Navamber 1800