Improvements in or relating to Steam Generators.
Year: 1890

page_text: Date of Application, 2nd July, 1890
Complete Specification Lett, 2nd Apr., 1891-Accepted, 2nd May, 1891
PROVISIONAL SPECIFICATION.
Improvements in or relating to Steam Generators.
I WALTER CHAMBERS of 24 Ulster Chambers Belfast in the County of Antrim
Engineer do hereby declare that the nature of my invention relates to the utilization
of heat contained in the waste products of combustion commonly called chimney
gases whereby a portion of the said gases is revivified in a producer in which
ordinary producer gas is made.
In carrying out my invention I withdraw a portion of the waste products of
combustion which contain with other non-combustible elements carbonic acid, and
these I deliver into a gas producer together with sufficient air to maintain combus-
tion of the fuel. The said carbonic acid by transuding the hot fuel within the
producer combines with the carbon of the fuel and so becomes converted into
carbonic oxide.
This carbonic oxide is then delivered into a combustion chamber where it unites
with a supply of air and combustion ensues.
I utilize the resultant heat of this combustion for the generation of steam in a
steam generator combined with gas producer similar in construction to that described
in Specification attached to my application for Patent No. 5517 A.D. 1890 the
details of which are slightly varied when adapted to the requirements of this
invention.
of L.1., 1900
POPPLEWELL & Co.,
17 & 18, Southampton Buildings, London, W.C., Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in or relating to Steam Generators.
I WALTER CHAMBERS of 24 Ulster Chambers, Belfast in the County of Antrim
Engineer, 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 :-
The nature of my invention relates to the utilization of heat contained in the
waste products of combustion commonly called chimney gases whereby a portion
of the said gases is revivified in a producer in which ordinary producer gas is
made.
In carrying out my invention I withdraw a portion of the waste products of
combustion which contain with other non-combustible elements carbonic acid and
these I deliver into a gas producer together with sufficient air to maintain combus-
tion of the fuel.
The said carbonic acid by transuding the hot fuel within the producer combines
with the carbon of the fuel and so becomes carbonic oxide. This carbonic oxide is
then delivered into a combustion chamber where it unites with a supply of air and
combustion ensues.
I utilize the resultant heat of this combustion for the generation of steam in a
steam generator combined with a gas producer similar in construction to that
described in Specification attached to my Letters Patent No. 5517 A.D. 1890
the details of which are slightly varied when adapted to the requirements of this.
invention.
Referring to the accompanying drawings and to the figures and letters of reference

page_text: Figure 18 a side sectional elevation,
Figure 2 is an end or front sectional elevation
Figure 3 is a plan, all shewing my improved arrangement of steam generators and
according to which I construct such steam generators in conjunction with gas
producers as follows.
I provide a steam generator 1 which is a vertical cylindrical vessel having a fire
brick combustion chamber 2-where the ignition of the gases take place-con-
structed at the base of each internal flue 3. Each flue is open at the top to a box 4
which is intersected by a number of circulating water tubes or a channel 5 for the
purpose of transmitting steam and water freely to the water level. Thence the
heated products of combustion pass downwards through the tubes 6 into the space 7
under the boiler and then to the chimney 8.
The gas producer or producers 9 are vertical brickwork structures containing the
solid fuel, which is supported on the hearth 10. Air for maintaining combustion of
this solid fuel is admitted through the perforated pipe 11.
In the ordinary process of making producer gas air is admitted to the producer to
support primary combustion, by its oxygen combining with the fuel to first form
carbonic acid. This gas also constitutes a large proportion of the waste or chimney
gases. It then transudes the superincumbent mass of hot fuel within the producer
from which it absorbs more carbon and so becomes the staple combustible element
in producer gas, namely carbonic oxide.
According to my invention I supplement this well known process by also
supplying to the producer a portion of the waste or chimney gases containing the
above mentioned carbonic acid which then passes through the incandescent fucl and
becomes changed into combustible carbonic oxide and uniting with the other gases
within the producer, is ignited with them in the combustion chamber, the resultant
heat being utilized for the generation of steam. For this purpose I provide in
addition to the air supply pipe 11 an inlet pipe 12 to convey a portion of the hot
waste gases to the producer which are led from the chimney by the outlet 13: by
these means a considerable amount of waste heat is also returned to the producer.
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
First The utilization of waste heat and chimney gases in the manner described
in combination with the steam generators and gas producers substantially as set
forth and described in the Specification attached to Letters Patent No. 5517
A.D. 1890.
Second: The utilization of waste heat and chimney gases in the manner described
whereby a portion of the gases becomes revivified and available for the generation
of heat and substantially as shewn by the accompanying drawings.
Dated this 2nd day of April 1891
POPPLEWELL & Co.,
17 & 18, Southampton Buildings, London, W.C., Agents for the Applicant.