Improvements in Smoke Consumers for Furnaces
Year: 1891

page_text: COMPLETE SPECIFICATION.
Improvements in Smoke Consumers for Furnaces.
A communication from DAVID CHARLES ADAMS of 22 King Street East, in the
City of Toronto, County of York, Province of Ontario Canada, Iron Worker.
I, ALFRED JULIUS BOULT, of 323, High Holborn, in the County of Middlesex,
M.I.M.E., 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:-
The object of this invention is to design a smoke consumer applicable to furnaces
for manufacturing iron, locomotive, stationary, steam-boat, smelting and all other
classes of furnaces; and it consists essentially of a blast of superheated air
introduced into the furnace where it will mix with the smoke arising from the fire
box and be carried with the said smoke through a flame of hydrogen gas produced
by superheated steam carried through iron pipes and discharged into the furnace at
a point where intense heat is desired.
Fig. 1 is a sectional side view of any ordinary balling furnace provided with this
improved smoke consumer.
Fig. 2 is a plan of the same.
Fig. 3 is a cross sectional elevation.
Fig. 4 is an enlarged detail of the bridge showing the manner of introducing blasts
of superheated air and superheated steam.
As before stated this improved smoke consumer is applicable to all kinds of
furnaces but for the purpose of this Specification I show it applied to a balling
furnace. The arrangement of the parts will of course differ according to the size
and style of the furnace but an explanation of its application to a balling furnace
will be sufficient to enable any one to understand the construction and operation of
the improved smoke consumer.
In the drawing A. represents a steam pipe which is supplied with steam from any
suitable source. B is an air pipe which is preferably supplied with air under
pressure from the pump or fan C. These pipes A and B extend down into the
sand D forming the bottom of the furnace. Both of these pipes are carried below
this bed to the bridge E as indicated in the drawing. A chamber F is formed in
the bridge E and is preferably surrounded by a water space G which is supplied
with flowing water in such a manner as to protect the said bridge. The chamber F
may be open at its top as indicated in the drawing or a perforated top may be
provided. The steam pipe A extends into the chamber F and is extended up to a
point near the top of the said bridge where it is carried back through the inner wall
of the bridge E where it connects with a branch pipe with fan shaped openings (see
Fig. 4). The superheated air which enters the chamber F escapes into the furnace
immediately above the bridge E where it mixes with the smoke passing over the said
bridge. The hydrogen gas which is discharged through the fan shaped openings L
forms a flame which immediately ignites the smoke subcharged with the heated air
from the chamber F producing perfect combustion and as a consequence the intense
heat is secured with a minimum consumption of fuel. With the view of protecting
the top of the furnace I introduce an air pipe I through it at an angle pointing
towards the inner corner of the bridge E and into this pipe I insert a small steam
jet K supplied with steam from the pipe. This steam jet K forms with the air
pipe J an injector to force into the point desired a mixture of steam and air which
acts as a blast to force the flame down towards the bed D at which point the
most intense heat is required and thereby carrying the flame from the top of the
furnace.
My correspondent does not wish to confine bimself to the exact arrangement of
the detail illustrated in the drawing for as before stated the details of the

page_text: arrangement will be altered to suit the class of furnace to which the smoke
consumer is applied.
Having now particularly described and ascertained the nature of this said inven-
tion, as communicated to me by my foreign correspondent, and in what manner the
same is to be performed, I declare that what I claim is :-
1. The combination with a furnace to a pipe or pipes carried through the furnace
in such a manner as to superheat the steam contained in the pipe or pipes producing
hydrogen gas which is discharged into the furnace at the required point to produce
combustion of the smoke substantially as and for the purpose specified.
2. An air pipe or pipes located within the furnace and designed to discharge its
superheated contents into the furnace at a point where it will mix with the smoke in
combination with a blast of hydrogen gas introduced into the furnace at a point
where it will ignite the smoke after it has been mixed with the superheated air
substantially as and for the purpose specified.
Dated this 17th day of March 1891.
W. P. THOMPSON & BOULT,
Agents for the Applicant.