Improvements in Heating Furnaces by Means of Liquid Hydrocarbons.
Year: 1895

page_text: Date of Application, 8th May, 1895-Accepted, 8th June, 1895
COMPLETE SPECIFICATION.
Improvements in Heating Furnaces by Means of Liquid
Hydrocarbons.
1, SYDNEY PITT, of Sutton, in the County of Surrey, Gentleman, (a communi-
cation from La Compagnie Internationale des procédés Adolphe Seigle, of 4 Rue
des Archers, Lyons, in the Republic of France,) do hereby declare the nature of
this invention aud in what maune the same is to be performed to be particularly
described and ascertained in and by the following statement.—
This invention has for its object a method of heating furnaces of various types
by the combustion of liquid hydrocarbons such as the heavy oils of tar, coal,
petroleum and the like.
These different types of furnaces such as furnaces for melting metals in crucibles
or upon a hearth, reheating, enamelling and other furnaces are heated by one or
more gas generators or spraying apparatus of any type in combination with one or
more tubular, cylindrical or prismatic combustion chambers provided upon one half
of the periphery with a succession of air inlets arranged in steps and having for
then object to supply to the different sections of the plane the quantity of oxygen
necessary for complete combustion throughout of the carbon and hydrogen.
These steps have for their object to increase progressively the section of the
channel in which combustion takes place in proportion to the increase in the volume
of the products of combustion and above all to maure by the suction of the flame
alone the entrance of the air necessary for combustion.
This arrangement is common to all the furnaces constructed in accordance with
the invention and is the characteristic featue, the only differences are to be found
in the inclination of the channel or channels, the number of successive sections and
the position they occupy.
The invention is represcuted in the annexed draning which shows various
examples of the novel combustion chambers on channels applied to furnaces of
various types and suitably arranged
In the drawing.
Figure 1 is a longitudinal section of a crucible furnace.
Figure 2 is a transverse section of a reverberatory furnace for the fusion of
steel and other metals in which the melted metal continuously runs from the
ful nace.
Figure 3 is a longitudinal section on the line X X of Figure 2.
Figure is a longitudinal section of a reheating or enamelling furnace.
Figure 5 18 a transverse section on the hue Y Y of Figure 4
In these figures.
A A A A A are the gas generators and nozzles by which the gas issues.
B B B B B are the combustion channels ou chambers
baro air inlets arranged in steps, the number of them may be varied according
to cucumstances.
The allows marked 1 show the circulation of the flame and the products of
combustion, the allows marked 2 that of the air.
In Figure 1 the flame issuing from the spraying or gas generator injector A
which may be of any type is directed obliquely into a chamber in which the
Crucibles are placed. The products of combustion escane by the chimnaw ŉ

page_text: The air travels in the opposite direction to the hot gases and issues from the
orifices it having been previously heated whilst following the tortuous path
indicated by the airows maiked 2
In Figures 2 and 3 two views are shown of a reverberatory finace for the
continuous melting of metals
This furnace has four combustion channels or chambers A' A² A* A*
S is an inclined bed of a curvilinear section upon which the scrap metal is
placed. Ps the door for changing the scrap metal O is the orifice out of which
the metal continuously runs.
The combustion channel and the air inlets are exactly analogous to the corre-
sponding parts of the furnace previously described
Figures 4 and 5 are two sections of a reheating or enamelling furnace of the
reverberatory type with a descending Blame.
S is the bed upon which the articles to be relicated or enamelled are placed.
P 16 a door for the introduction or withdrawal of the said articles.
I do not limit myself to the details of execution which may be varied f
needful.
llaving now particularly described and ascertained the nature of my said inven-
Lion and in what manner the same is to be performed 1 declare that what I
claim is
-
In furnaces such as described and shown in the accompanying drawing or in
furnaces of analogous type, the combination of oue or more gas generators or
sprayers which pulverize spray or vapoulize combustible liquid, with one or more
combustion channels or chambers provided upon one side or part of their periphery
with a succession of air lets arranged in steps and having for effect to supply to
the different sections of the flame the quantity of oxygen necessary for complete
the annexed
combustion, all substantially as above described and shown in
drawing.
Dated this 8th day of May 1895.