IMPROVE- MENTS IN FURNACES
Year: 1884

page_text: I, WILLIAM ANDREW MCINTOSH VALON of Ramsgate in the County of Kent,
Civil Engineer do hereby declare the nature of my said Invention for." IMPROVE-
MENTS IN FURNACES" to be as follows:-
This Invention has for its object the construction of furnaces whereby economy
in the consumption of fuel and thorough efficiency are combined. These furnaces
are of the kind generally known as "regenerator," and are specially adapted to
the heating of retorts used in the manufacture of gas, but are also applicable to
other purposes where economy, intensity and regularity of heating power" are
essential.
The Invention consists in forming the air supply channels and the waste gas
flues parallel to each other, they being so arranged that the air and waste gases
shall travel in opposite directions, the cold air being admitted into a channel
adjoining the waste gases flue where the latter is the hottest. The air flows
downwards and at the same time backwards and forwards, and then ascends still
travelling backwards and forwards until it repasses the same highest heated waste
gas flue previously mentioned, before entering the chamber or flue where it
combines with the carbonic oxide and other gases at the point of combustion. The
waste gases flow backwards and forwards until they reach the bottom flue, from
whence they are conveyed to the main flue and chimney. Another special feature
in this Invention is that the air channels which are continued to the front of the
back wall of the setting and carried forward over the top arch of the furnace, have
in each at or near their rear ends an opening through which flows a portion of the
furnace gases, which on becoming-ignited by contact with. the air so increases the
heat of the said air as to ensure combustion at the proper point without robbing
the surrounding surfaces of any heat already imparted to them. These small
openings are not necessarily confined to the rear ends of the aforesaid channels,
but may be placed in any position where experience and the particular circum-
stances of the case direct as the fittest, and in some cases the air channels over the
top arch of the furnace may consequently be dispensed with.
The air channels may also be so arranged as to admit the air on each side of the
waste gas flue at the lowest and coolest point, the air travelling backwards and
forwards in an upward and contrary direction to that followed by the waste gases.
The air channels' which are separated by the intervention of the waste gas flues

page_text: unite just prior to entering the air channels over the top arch of the furnace, so
that the two separate streams of air, join and then flow on together into the
channel over, the arch just mentioned. An identically similar arrangement of flues
is provided on each side of the furnace.
Dated this Twenty-third day of January 1884
"
I, WILLIAM ANDREW MCINTOSH VALON of Ramsgate, in the County of Kent
Civil Engineer do hereby declare the nature of my Invention for "IMPROVEMENTS
IN FURNACES 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 the construction of furnaces whereby economy
in the consumption of fuel and thorough efficiency are combined. These furnaces
are of the kind generally known as "regenerator," and are specially adapted to
the heating of retorts used in the manufacture of gas, but are also applicable to
other purposes where economy, intensity, and regularity of heating power are
essential.
In order that the Invention may be more easily understood Drawings are
attached hereto of which the following is a description. In each of the Figs.
similar letters refer to the same parts. Fig. 1 is a transverse section of the
regenerator and part of the furnace and setting through A, B, Fig. 4.-Fig. 2 is a
section on line C, D, of Fig. 1.-Fig. 3 is a horizontal section on line G, H of Fig. 1.
Fig. 4 is a section on line E, F of Fig. 1.--Figs. 5 and 6 exhibit an alternative
position for the gas jet entries U which are the equivalents of T, T in Fig. 3, and
where the air channels over the arch are retained. Figs. 7 and 8 also show an
alternative arrangement of gas jet entry at V, but in this case the air channels
over the arch are dispensed with. Fig. 9 is a section on line W, X of Figs. 12 and 13.
Fig. 10 is a section on line Y, Z of Figs. 9 and 11.-Fig. 11 is a section on
line a, b, of Fig. 12. Fig. 12 is a section through c, d of Figs. 9 and 11.-Fig. 13 is a
section on line e, f, in Figs. 9 and 11.-Figs. 14, 15, 16, 17 and 18 are views of the
rabbeted bricks used in the flues and sides of the furnace. Fig. 19 is a transverse
section of flues showing how they are built. Fig. 20 is a longitudinal section of
part of the waste gas flues, and Fig. 21 is a longitudinal section of part of the
secondary air flues.
The Invention consists in forming the air supply channels M and the waste gas
flues N parallel to each other, they being so arranged that the air and waste gases
.shall travel partly in opposite directions, the cold air being admitted into a channel
at the point O adjoining the waste gases flue where the latter is the hottest. The
air flows downwards and at the same time backwards and forwards, and then
ascends still travelling backwards and forwards until it repasses at the point P the
same highest heated waste gas flue previously mentioned, before entering the
chamber or flue Q Fig. 3 where it combines with the carbonic oxide and other gases

page_text: at the point of combustion.-The waste gases flow through the channels N,
backwards and forwards until they reach the bottom flue, from whence they are
conveyed to the main flue and chimney. Another special feature in the Invention
is that the air channels which are continued to the front of the back wall R. Fig. 3
of the setting are carried forward over the top of the arch of the furnace, have in
each at or near their rear ends an opening T through which flows a portion of the
furnace gases, which on becoming ignited by contact with the air so increases the
heat of the said air as to ensure combustion at the proper point without robbing
the surrounding surfaces of any heat already imparted to them. These small
openings are not necessarily confined to the rear ends of the aforesaid channels,
but may be placed in any position where experience and the particular circumstances
of the case direct as the fittest, as exemplified at U in Figs., 5 and 6, and in some
cases the air channels over the top of the arch of the furnace may consequently be
dispensed with as in Figs. 7 and 8, where the entry for the jet is at V.
The air channels may also be so arranged as to admit the air on each side of the
waste gas flue at the lowest and coolest point in Fig. 9 at g, the air travelling
backwards and forwards in an upward and contrary direction to that followed bý
the waste gases. The air channels which are, separated by the intervention of the
waste gas flues unite just prior to entering the air channels over the top of the arch
of the furnace so that the two separate streams of air join and then flow on
together into the channels h Fig. 3 over the arch just mentioned. An identically
similar arrangement of flues is provided on each side of the generator and furnace.
By constructing furnaces as before described in which openings T, T or their
equivalents are provided whereby jets of generator gases are allowed to enter the
said air channels and by their combustion heat the air sufficiently to permit of its
combination with the generator gas without reducing the temperature of the
surrounding parts, economy and intensity and regularity of heating are effected.
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,
་
First. The construction of furnaces having openings situated as herein
described and shown on the Drawings as T T Fig. 3,-U Figs. 5 and 6, and V
Figs. 7 and 8, for the purpose hereinbefore set forth.
Secondly. The arrangement of the air. channels has herein described and
shown on the Drawings.