The workingman's advocate. [volume] (Chicago [Ill.]) 1864-1877, 1874-12-19
New RegenerxtOr Furnace.


Figure is q vertical longitudinal sec
ton Of an improved regenerator, and Fly.
2 il an end view of the same.
Like letters refer to like parts in each
| figure.
The invention relates TO apparatus en-
ployed for utilizing the heat contained in
the waste products of combustion, on their
passage from the hearth Of the furnace,
In the manufacture of iron and steel, gen
orally termed regeneraSOrs and it consists
IN controlling the Temperature of the pro-
ducts of combustion in the down take, OF
fiue leading from the hearth to the regen-
orator by t-e admission Of air, for which
purpose a series OF air passages in the
walls Of the down take are provided at
such points that the temperature Of The
products Of combustion escaping from the
hearth may be reduced before reaching the
regenerator.
Regenerator furnaces, as heretofore con-
structed, have been Of two general classes;
First, those in which the products Of CON-
bustion passing from the fire chamber OF
hearth gave up their heat to the walls OF
surfaces Of the regenerators, from which
same surfaces il was again absorbed by the
incoming air and gases and, secondly,
those in which the prOdu Is Of combustion
passing continuously through series OF
passages gave up the heat to surfaces
which transmitted it to an incoming air and
gas passing continuously over the op-
posite surface of said tubes or passages.
While the present invention Is applicable
to both classes of regenerators, it il more
especially adapted for the second or latter
classes. The difficulties to be overcome in
the present regenerative furnaces are
First, the cutting or destruction Of the tu.
bular OF other works subjected to the
products of combustion coming directly
from the hearth and, secondly, the de.
rangement of the furnace from the une.
expansion and contraction arising from al
terations Of temperature due to the intense
heat. To such an extent have thess
causes initiated against the usefulness Of
regenerative furnaces, that but few have
been successively and economically work
ed, the intense heat to which the regenera
tive apparatus Of furnaces is subjected, in
duclng such unusual degrees of expansion
as to require special provision to counter
act this disturbing element
The idea has heretofore prevailed thai
in order to obtain the best effects in work
ing regenerative furnaces the greatest
possible heat should be impaired to ths
regenerator, and all waste heat of the
products Of combustion utilized. But il
Is evident, when we consider that even fol
steel making, from 5000 to 1000 Frh. il
the highest heat required Oh the hearth
and at the time the combustion takeI
place the elements eatering into the hamG
are rslDed 1900 Fab, OF thereabOut. it il
not necessary that the temperature OF the
Regeneration should exceed 2400P to $500
Fab, provided the regenerator is of suffi
cIent capacity for the work expected Of it
and II the temperature Of the products oi
combustion passing from the hearth to the
regeneratOr Ia 80 controlled az to maintain
the regeneratOr at or about that tempera
ture, the useful purposes Of a regeneratoI
will be attained, and the heats which have
been heretofore 80 detrimental will b
avoided
The present construction Of regenerAtoI
furnaces is not such that the temperature
of the products of combustion passing tc
the regeneratOr can be regulated, but mus
vary, according as a reducing, neutral, OF
melting flame IL used. The object, there
J fore, Of this invention is to provide 1
means for controlling the temperature o.
the products Of combustion, as heretofor,
stated.