for Injecting Liquid Hydro-carbons into Furnaces.
Year: 1887

page_text: for Injecting Liquid Hydro-carbons into Furnaces.
I EDWIN NATHANAEL HENWOOD of No. 22 Great Saint Helens in the City of
London Naval Architect and Engineer do hereby declare the nature of this invention.
to be as follows:-
-
This Invention has for its object improvements in the arrangements and Construction
of Apparatus for injecting liquid Hydro-carbons into Furnaces.
The mode hitherto most generally adopted has been to employ an inner and an
outer surrounding tube and either to allow the oil to flow through the inner tube and
the steam or compressed air to pass through the outer surrounding tube or otherwise
the steam or compressed air to pass through the inner tube and the oil to flow
through the outer surrounding tube.
In carrying out my Invention I employ three tubes, a centre tube, an outer
surrounding tube and a second outer surrounding tube presenting three apertures or
orifices at its face which may be of a circular or flat oval form. And I employ the
centre and the outer tubes for the passage of steam or compressed air and the middle
tube for the passage of the oil. Stop-cocks are fitted to the several tubes for adjusting
the supply of steam or compressed air and the oil, and I also by a suitable arrange-
ment provide for clearing the oil tube when necessary with steam without having to
disconnect the apparatus.
By the arrangements hereinbefore described I am enabled to obtain a more perfect
spraying of the oil and mixing with the steam or compressed air.
Dated this Eighteenth day of October 1887.
EDWIN N. HENWOOD.

page_text: Improvements in the Arrangements and Construction of Apparatus
for Injecting Liquid Hydro-carbons into Furnaces.
I EDWIN NATHANAEL HENWOOD of 22 Great Saint Helens, in the City of London
Naval Architect and 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
'
:-
This Invention has for its object improvements in the arrangements and construction
of apparatus for injecting liquid Hydro-carbons into furnaces.
The modo hitherto most generally adopted has been to employ an inner and a
surrounding outer tube; and either to allow the oil to flow through the inner tube
and the steam or compressed air to pass through the outer surrounding tube or
otherwise the steam or compressed air to pass through the inner tube and the oil to
flow through the outer surrounding tube.
In carrying out my invention I employ three tubes, a centre tube, an outer
surrounding tube, and a second outer surrounding tube, and I insert in the centre
tube at its face a short tapered plug; thus presenting three annular orifices or
openings in front or at face of the apparatus. The tubes may be of a circular or flat
oval or other convenient form. The size and length of the several tubes is dependent
on the nature of the work required to be done, as also the areas of the annular orifices
or openings. The centre and the outer tube I employ for the passage of the steam
or compressed air and the middle tube for the passage of the oil. The face of the
apparatus may be flush but by preference I allow the inner tube to extend about a
sixteenth of an inch beyond the middle tube and the middle tube a sixteenth beyond
the outer tube. The several tubes and the tapered plug are kept in place at the face
by means of short thin webs, studs, or set screws. Stop Cocks are fitted to the pipes
leading to the several tubes where most convenient for adjusting the supply of steam
or compressed air and the oil and I also by a suitable arrangement of steam pipes
provide for clearing the oil tube when necessary with steam or compressed air without
having to disconnect the apparatus.
By means of the arrangements hereinbefore described the steam or compressed air
is applied at about equal force or pressure on each side of the oil as it flows or is forced
through the middle annular orifice or opening, whereby I am enabled to obtain a more
perfect spraying of the oil and mixing with the steam or compressed air, and perfect
combustion with a less amount or volume of steam or compressed air, and a reduction
of noise from the "roar-of-the blast" to a minimum (being in this case practically
noiseless).
Having now described the said invention I will proceed to show by the aid of the
accompanying sheet of diagrams in what manner the same is or may be carried
out:-
Fig. 1. is a longitudinal section of the apparatus constructed according to my
invention

page_text: Surrounung tuve.
B is the middle tube.
C is the centre tube with tapered plug c at orifice or face.
D and E are the passages for steam or compressed air.
F is the passage for oil (Hydro-carbon).
G are glands with packing g.
H are set-screws, studs or webs.
Fig. 2. is section at face of apparatus showing three annular apertures or orifices,
with webs, studs, or set screws H for keeping the tubes and plug in position.
For furnace work generally the annular orifices are made about a thirty second of
an inch in width, the outer may be less and the centre greater, to equalize the
areas.
I do not confine myself to the application of this apparatus to any one particular
purpose as with suitable modifications it may be applied for lighting as well as for
heating purposes and in fact for most purposes where hydro-carbon oils are used
for heating or lighting.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is or may be performed I desire to have it understood
that save and except as hereinafter mentioned I do not intend to claim any of the
mechanical parts of the apparatus hereinbefore described and illustrated when taken
separately and apart from the combination and application thereof in the manner and
for the purposes herein described and illustrated but I declare that what I claim is :—
1. The apparatus hereinbefore described and illustrated with three annular orifices
or apertures at its face for ejecting and vapourizing hydro-carbon oils in the manner
and for the object hereinbefore described and any mere modification thereof.
Dated this Eighteenth day of July 1888.
EDWIN N. HENWOOD.