An Improved Method of and Apparatus for Burning Liquid Fuel.
Year: 1897

page_text: [Communicated from abroad by PAUL EMIL THUROW, of No. 1, Sandweg, in the
City of Hamburg, in the Empire. of Germany, Engineer.]
An Improved Method of and Apparatus for Burning Liquid Fuel.
I, HENRY HARRIS LAKE, of the Firm of Haseltine, Lake & Co., Patent Agents,
45, Southampton Buildings, in the County of Middlesex, do hereby declare the
nature of this invention to be as follows:-
My invention relates to the utilization of liquid fuel particularly for heating
boilers.
In burners for burning liquid fuel, such as hydrocarbons, petroleum and the
like, in which a jet of compressed air is used to carry the liquid fuel in a form
of spray into the furnace the compressed air owing to its cooling while expanding
in the pipe conduit reduces the temperature at the base of the flame. This
inconvenience, however, can not be obviated by heating the air jet near the outlet
opening since by such a heating the tension of the compressed air is too much
reduced.
In using steam for atomizing the liquid fuel the inconvenience mentioned above
is practically obviated, but in many cases, and particularly in marine-boiler
furnaces, it is very difficult and also too expensive to procure the sufficient amount
of steam necessary for this purpose.
The object of the present invention is to dispense, in hydrocarbon-burners, with
the use of compressed air and steam and to replace the latter by a gas which
is obtained by vaporizing suitable combustibles for instance coal oils or other
liquid fuels. The gas thus obtained serves not only as a means for atomizing
or spraying the liquid fuel but acts by its being burned also as a fuel. The
necessary amount of oxygen indispensable for a perfect combustion may be led
into the flame separately or together with the jet of gas acting as the atomizing
means for the liquid fuel.
For carrying out the method above described I prefer to use a burner which
consists of three pipes or nozzles put together and screwed upon one another. The
funnel-shaped or trumpet-mouthed outlet end of the innermost tube is larger
than the outlet ends of the other tubes or nozzles. By screwing the three tubes
or nozzles more or less into one another the relative positions of the said tubes
may be altered so as to regulate the width of their outlet openings.
The liquid fuel enters through a neck into the outermost nozzle while the gas
for atomizing the liquid fuel is forced with a sufficient pressure through the
channel into the nozzle placed between the outermost and innermost nozzles.

page_text: The liquid fuel escaping through the outlet opening of the outermost nozzle is
atomized by the combustible gas driven through the middle nozzle, and is carried
in the form of spray in the midst of the fire so as to apply the flame to the
surfaces of the boiler. The oxygen or atmospheric air necessary for a perfect or
complete combustion is supplied through-the innermost tube or nozzle.
Dated this 20th day of December 1897.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.
An Improved Method of and Apparatus for Burning Liquid Fuel.
I, HENRY HARRIS LAKE, of the Firm of Haseltine, Lake & Co., Patent Agents,
45, Southampton Buildings, in the County of Middlesex, 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 the utilization of liquid fuel particularly for heating
boilers.
In burners for burning liquid fuel, such as hydrocarbons, petroleum and the
like, in which a jet of compressed air is used to carry the liquid fuel in the forni
of spray into the furnace the compressed air owing to its cooling while expanding
in the pipe conduit reduces the temperature at the base of the flame.
In using steam for atomizing the liquid fuel the inconvenience mentioned above
is practically obviated. but in many cases, and particularly in marine-boiler
furnaces, it is very difficult and also too expensive to procure a sufficient amount
of steam necessary for this purpose.
The object of the present invention is to dispense, in hydrocarbon-burners, with
the use of compressed air and steam and to replace the latter by a gas which
is obtained by vaporizing suitable combustibles for instance coal oils or other
liquid fuels. The gas thus obtained serves not only as a means for atomizing
or spraying the liquid fuel but acts by its being burned also as a fuel. The
necessary amount of oxygen indispensable for a perfect combustion may be led
into the flame separately or together with the jet of gas acting as the atomizing
means for the liquid fuel.
For carrying out the method above described I prefer to use a burner of the
form represented in longitudinal sectional elevation in the accompanying drawing.
The burner consists of three pipes or nozzles a b and c put together and screwed
upon one another in the manner shown. The funnel-shaped or trumpet-mouthed
outlet end a¹ of the innermost tube exceeds the outlet ends of the nozzles b and c.
By screwing the said tubes a b and c more or less into one another the relative
positions of the said tubes may be altered so as to regulate the width of their
outlet openings.
The liquid fuel enters through the neck c¹ into the nozzle while the com-
bustible gas for atomizing the liquid fuel is forced with a sufficient pressure
through the channel b and the chamber d¹ formed by the screw cap d into the
nozzle h. The liquid fuel escaping through the outlet opening of the nozzle c meets
therefore the funnel or trumpet a¹ where it is atomized by the combustible gas
driven through the nozzle b, so that the liquid fuel is carried in the form of
spray in the midst of the fire in order to apply the flame to the surfaces of the
boiler. The oxygen or atmospheric air necessary for a perfect or complete com-
bustion is supplied through the tube a.

page_text: Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed, as communicated to me by my
foreign correspondent, I declare that what claim is:-
1. The improved method of atomizing liquid fuel which consists in employing
combustible gas or vapor, obtained by vaporising a suitable combustible or fuel,
as the means for spraying and injecting liquid fuel into the furnace, substantially
as and for the purpose set forth.
2. The improved burner for spraying and injecting liquid fuels by means of
combustible gas or vapor, comprising the combination of a central air inlet
tube (a) with a trumpet-shaped mouth (a¹), a nozzle (b) forming the passage for
the combustible gas or vapor and surrounding the said central tube, and a
nozzle (c) forming the passage for the liquid fuel, the latter surrounding the
nozzle (6), both the said nozzles terminating with their discharge ends in front
of the trumpet mouth (¹), substantially as and for the purpose described.
Dated this 20th day of September 1898.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.