Improvements in and Connected with Regenerative Steel-making Furnaces.
Year: 1885

page_text: Improvements in and Connected with Regenerative Steel-making
Furnaces.
I, JAMES RILEY, General Manager to The Steel Company of Scotland Limited of
150 Hope Street, Glasgow, in the County of Lanark, North Britain, do hereby
declare the nature of this Invention to be as follows, that is to say :-
My said Invention has for its object to adapt regenerative steel-making furnaces
for using liquid carbonaceous fuel in the form of mineral oil or in the form of any
suitable carbonaceous substance liquefied by heat.
In carrying out my Invention according to one modification a single regenerative
chamber is constructed in connection with each end of the furnace and the used
gases and air are alternately passed through each chamber, the air being thereby
intensely heated. The liquid fuel is supplied through pipe nozzles at or near each
port through which the heated air enters the reverberatory chamber of the
Iurnace; and it may either be simply dropped in from the top of the port or
passage or it may be projected from the bottom or sides or both so as to cross the
current of heated air. The heat of the air will be sufficient to vaporise the
carbonaceous fuel and its combustion will be effected like that of the combustible
gas in ordinary steel-making furnaces.
My Invention may be applied to existing steel-making furnaces by using all the
regenerative chambers for heating the air.
Dated this twenty-third day of October 1885.

page_text: Furnaces.
r
I, JAMES RILEY, General Manager to The Steel Company of Scotland, Limited,
of 150 Hope Street, Glasgow, in the County of Lanark, North Britain, 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
ATTA
statement, that is to say
My said Invention has for its object to adapt regenerative steel-making furnaces,
in an improved manner for using fluid carbonaceous fuel in the form of mineral oil
or in the form of any suitable carbonaceous substance rendered fluid by heat.
In carrying out my Invention according to one modification a single regenerative
chamber is constructed' in connection with each end of the furnace, and the used
gases and air are alternately passed through each chamber, the air being thereby
intensely heated. When mineral oil or other liquid carbonaceous fuel is employed
It is supplied through pipe nozzles at or near each port through which the heated
air enters the reverberatory chamber of the furnace; and it may either be simply
dropped in from the top of the port or passage, or it may be projected from the
bottom or sides or both so as to cross the current of heated air. The heat of the air
will be sufficient to vaporise the liquid carbonaceous fuel and its combustion will
be effected like that of the combustible gas in ordinary steel-making furnaces.
.
And in order that my said Invention and the manner of performing the same
may be properly understood I hereunto append two sheets of explanatory drawings
to be hereinafter referred to and representing steel-making furnaces and apparatus
as made with my improvements.
'
Figures, 1, and 2, on sheet, 1, of the accompanying drawings are a plan and a
vertical section showing one modification. Figure, 3, on sheet, 2, is a vertical
section as at right angles to figure, 2; and figure, 4, is a vertical section similar to
figure, 2, but showing modified details. In these drawings the same reference
numerals are used to mark the same or like parts wherever they are repeated.
My present Invention is applicable with various forms and arrangements of
steel-making furnaces and regenerative chambers, I have however shown these
parts in the accompanying drawings as of the kind described in the Specification of
Letters Patent granted to Frank Wesley Dick and myself and numbered 1157 of
1883. The reverberatory chamber, 5, is circular in plan, and two circular regener-
ative chambers, 6, 7, are built in connection with it and on diametrically opposite
sides of it. The upper parts of the regenerative chambers, 6, 7, communicate with
the reverberatory chamber, 5, by passages or ports, 8, 9, whilst their lower parts
communicate by flues, 10, 11, with a reversing valve, 12, arranged in the usual way
to admit air to one chamber whilst leading the used gases from the other chamber
to the chimney and vice versa. The whole of the used gases are employed for
heating the air, instead of being employed as in ordinary arrangements partly for
heating air and partly for heating combustible gas.
I
In the modification shown in the drawings the arrangements for supplying to the
furnace the fuel which is mineral oil consists of a tank, 13, placed at a level a little
higher than the furnace so that the oil may pass to the furnace by gravitation; and
this tank, 13, has fitted to it a delivery pipe, 14, which is provided with a stopcock,
and has jointed to it, so as to be movable horizontally a pipe length, 15, which has

page_text: similarly jointed to it a second movable pipe length, 16. To the last mentioned
pipe length, 16, there are fitted branch pipes or nozzles, 17, (of which there may be
any suitable number) the ends of which enter holes made for them in one or other
of two firebrick blocks, 18, which cover openings into the passages or ports, 8, 9,
communicating between the regenerative chambers, 6, 7, and the reverberatory
chamber, 5. The nozzles, 17, are made with flanges to rest upon the top of the
block, 18; and they are placed so as to project the oil into that one of the passages
or ports, 8, 9, through which the heated air is at the time entering the reverberatory
chamber, 5. When the currents of heated air and used gases are changed by
reversing the valve, 12, the nozzles, 17, are at the same time removed from the
passage, 8, or 9, into which they have been projecting the oil and are inserted into
the openings of the other passage, the jointed connections of the pipe lengths, 15, 16,
allowing of this being done.
Instead of arranging a single set of oil injecting nozzles, 17, to be shifted from
one to the other of the passages or ports, 8, 9, there may be a separate set of
Dozzles, 17, for each passage or port as shown in figure, 4, the two sets being
attached to branch supply pipes, 19, 20, each fitted with a stopcock. Figure, 4,
also shows a modified conformation of the passages or ports, 8, 9, which are made
deeper at the parts further from the reverberatory chamber, 5, and have firebrick
slabs, 21, placed across them below the oil injecting nozzles, .17. These slabs, 21,
are slightly inclined downwards towards the reverberatory chamber the lower ones
being placed nearer that chamber; and they divide the current of heated air and
promote thorough intermixture and combustion.
The oil may be injected in the form of spray by means of compressed air or steam,
or it may be vaporised by the application of heat before being projected into the
passages or ports, 8, 9; or combustible gas or vapor may be projected into those
passages or ports along with or instead of the oil, but in all cases the air only is to
be heated by means of regenerative chambers (6, 7). My Invention may be applied
to existing steel-making furnaces by using all the regenerative chambers or such
portion of them as may be required for heating the air.
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed, I declare that what
I claim is:-
In, or in connection with regenerative steel-making furnaces
1 Applying all the regenerated heat to the air and using mineral oil or other
carbonaceous fluid as the fuel, such carbonaceous fluid being supplied by means of
apparatus causing it to intermingle with the heated air as the same is entering the
reverberatory chamber substantially as herein before described.
2 Arranging and combining apparatus for using fluid carbonaceous fuel com-
bined with air heated by means of regenerators, substantially as hereinbefore
described with reference to figures, 1, 2, and 3, of the accompanying drawings.
3-Arranging and combining apparatus for using fluid, carbonaceous fuel com-
bined with air heated by means of regenerators, substantially as hereinbefore
described with reference to figure, 4, of the accompanying drawings.
4-Modifying existing furnaces or apparatus so that all the regenerative chambers
or such portion of them as may be required may be used for heating the air and so
that fluid carbonaceous fuel may be projected into the passages or ports leading
into the reverberatory chamber substantially as herein before described.
Dated this aimtmonth dox of Tul., 1994
EDMUND HUNT,
Applicant's Agent.