Year: 1898

page_text: Date of Application, 30th Nov., 1898
Complete Specification Left, 8th Aug., 1899-Accepted, 30th Sept., 1899
A communication from GIUSEPPE NICOLINI, of 27, Via della Maddalena, Rome, in
the Kingdom of Italy, Civil Engineer.
I, ALFRED JULIUS BOULT, of 111, Hatton Garden, in the County of London,
do hereby declare the nature of this invention to be as follows:-
This invention relates to the manufacture of water gas and apparatus therefor.
in which the heat of the wall of the combustion chamber is utilised to generate
steam at a suitable pressure say exceeding three atmospheres, the usual refrac-
tory brickwork being replaced by a metallic double walled chamber forming a
full space and water jacket.
The object of this jacket is to do away in water-gas generating works with the
small steam generator which has been necessary hitherto for the production of
the steam for injecting into the generator. In this way a great saving of
expense and fuel is effected.
The apparatus comprises an outer and inner shell of the generator, a steam
dome or collecting space, an inlet for the fuel, a pipe for conducting steam from
the dome to the injector, a pipe coiled in the interior of the generator through
which the steam from the dome passes in order to be superheated, a pipe for
conducting the water gas from the generator to the gasholder, a lever serving to
move the valve or cone closing the fuel inlet. A safety valve, a pressure gauge,
a tube for indicating the water level being also provided, the furnace is provided
with an opening behind the door and a balance weight lever operated by the gas
holder bell is provided for regulating the admission of steam to the nozzle.
By doing away with the steam generator no blower for dry steam will be
required to start the generator and to keep it going. In this invention the light-
ing must be effected by wood or coal, said fuel being introduced through the
furnace door which will be hereinafter called the "lighting door."
The heat of the burning fuel is transmitted to the inner wall and evaporates
the water surrounding and in contact with it, the steam collecting in the dome,
whence it passes through the tube, coil and pipe to the nozzle.
As soon as the steam in the water jacket has attained a pressure of say 3 atmos-
pheres, the lower opening in the furnace is closed with a plug of refractory
material and the lighting door closed.
The generator being thus started, a regular working is attained by opening the
cock of the steam pipe, whereby the steam and air required for the production
of water gas will be injected under the grate through the injector, the fuel being
continuously supplied through the inlet at the top.
The incandescent fuel has in this invention the double function of producing
water-gas which passes to the gas holder through a purifier, and of evaporat-
ing water comprised between the two walls of the generator.
It is therefore obvious that the jacket of said generator fulfils the function of

page_text: a steam generator, and renders unnecessary the installation of a special generator
as hitherto usual
The jacket is provided with all the accessories of an ordinary boiler. The
feeding may be effected in different ways, automatically, by means of injectors,
pumps etc. It must be understood that the gases produced by the consumption of
wood and coal are not introduced into the gas-holder but discharged into the
atmosphere through valves arranged at suitable points on the conduit.
The apparatus described may be modified in various ways as may be found
necessary in practice.
Dated this 20th 1
1000
BOULT & WADE,
Agents for the Applicant.
A communication from GIUSEPPE NICOLINI, of 27, Via della Maddalena, Rome, in
the Kingdom of Italy, Civil Engineer.
I, ALFRED JULIUS BOULT, of 111, Hatton Garden, in the County of London,
Chartered Patent Agent, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer
tained in and by the following statement:-
This invention relates to the manufacture of water gas and apparatus therefor,
in which the heat of the wall of the combustion chamber is utilised to generate
steam at a suitable pressure, say exceeding three atmospheres, the usual refrac-
tory brickwork being replaced by a metallic double walled chamber forming a
full space and water jacket.
The object of this jacket is to do away in water-gas generating works with the
small steam generator which has been necessary hitherto for the production of
the steam for injecting into the generator. In this way a great saving of
expense and fuel is effected.
In the accompanying drawing is shown a vertical section of a generator
according to this invention.
C is the outer and C¹ the inner shell of the generator, I water, P the steam
dome or collecting space, I the funnel, Z the inlet for the fuel, R the fuel,
A the pipe for conducting steam from the dome to the injector N.
coiled in the interior of the generator through which the steam from the dome
s is a pipe
passes in order to be superheated, P¹ is the pipe for conducting the water gas
from the generator to the gas-holder, b is a lever serving to move the valve or
cone closing the fuel inlet Z. vis a safety valve, d is a pressure gauge, e a
tube for indicating the water level, g fire-bars, S the furnace door, T a clay-plug
behind the door, and R a balance weight lever operated by the gas holder bell
for regulating the admission of steam to the nozzle N.
By doing away with the steam generator no injector for dry steam will be
required to start the generator and to keep it going. In this invention the light-
ing must be effected by "wood or coal, said fuel being introduced through the
furnace door S-P2, which will be hereinafter called the "lighting door."
The heat of the burning fuel is transmitted to the inner wall C and evaporates
the water surrounding and in contact with it, the steam collecting in the dome P,
whence it passes through the tube s, coil s¹ and pipe A to the nozzle N which thus
acts as a dry steam injector.

page_text: As soon as the steam in the water jacket has attained a pressure of say
3 atmospheres, the door P2 is closed with a plug T of refractory material and the
lighting door S is subsequently closed.
The generator being thus started, a regular working is attained by opening the
cock of the steam pipe, whereby the steam and air required for the production
of water gas will be injected under the grate g through the injector N, the fuel
being continuously supplied through the inlet Z at the top.
The incandescent fuel has in this invention the double function of producing
water gas which passes to the gas-holder through a purifier, and of evaporating
the water comprised between the two walls C C of the generator, until the
steam has attained the necessary pressure to enable it to be injected under the
fire grate, mixed with dry air from the heating chamber.
It is therefore obvious that the jacket of said generator fulfils the function of
a steam generator, and renders unnecessary the installation of a special generator
as hitherto usual
The jacket is provided with all accessories of an ordinary boiler. The feeding
may be effected in different ways, automatically, by means of injectors,
pumps etc. It must be understood that the gases produced by the consumption of
wood and coal in lighting the fire are not introduced into the gas-holder, but are
discharged into the atmosphere, before the coal has become incandescent and
before steam is injected under the grate, through valves arranged at suitable
points on the conduit.
The apparatus described may be modified in various ways as may be found
necessary in practice.
Having now particularly described and ascertained the nature of the said
invention, as communicated to me by my foreign correspondent, and in what
manner the same is to be performed, I declare that what I claim is:-
1. The herein described method of producing and utilising steam in a water gas
generator, substantially as described.
2. Water gas generating apparatus in which the usual fire brick casing is
replaced by a double walled chamber forming a water jacket round the fuel
chamber, whereby the heat of the latter is utilised to generate steam in the
water jacket, substantially as and for the purpose described.
3. In a water gas generator, a water jacket steam generator of the kind
described, in combination with a device for injecting a mixture of steam there-
from and hot air below the fire grate, substantially as described.
4. The combination and arrangement of parts constituting the complete water-
gas generator substantially as described or illustrated in the accompanying
drawing.