Improvements in Apparatus for Consuming Smoke and Combustible Gases.
Year: 1894

page_text: D
Date of Application, 25th June, 1894
La
2016
1005
24th Mov 1005
Improvements in Apparatus for Consuming Smoke and
Combustible Gases.
A communication from LOUIS HALLBAUER, of Meriden, County of New Haven,
State of Connecticut, U.S.A., Machinist.
I ALFRED JULIUS BOULT of 323 High Holborn, in the County of Middlesex,
Chartered Patent Agent, do hereby declare the nature of this invention to be as
follows:-
This invention relates generally, to apparatus of the above class, and more
particularly to those forms thereof used in connection with steam boiler furnaces.
The invention consists of an auxiliary combustion chamber, receiving the
gaseous products of combustion from the flues which supply draft to the original
combustion chamber; a device for igniting the inflammable portion of said
products in said auxiliary chamber, and a device for admitting air thereto, to
support combustion therein. The invention further consists of the devices, and
combination of devices hereinafter more specifically set forth.
The object of the invention is to provide a device that will consume a larger
portion of the heretofore unconsumed parts of the fuel, and will utilize heat
generated during such consumption, for useful purposes.
The invention can be used with various forins of boiler, and in different kinds
of furnace, having analogous devices for producing and disposing of products of
combustion.
A chamber in which the original combustion of the fuel occurs, or is continued,
includes a chamber or chambers at the back of the bridge wall commonly called
combustion chambers, whose function is to promote the more complete combustion
of the gases ignited in the fire box or chamber in which fuel is placed. The term
original combustion chamber as herein used, may be said, generally, to include, in
other forms of furnace, those chambers or parts whose function is similar.
Tubes or flues which supply draft to the original combustion chamber, carry
the heated products of combustion through the boiler, and in forms of boiler with
triple return drafts, are returned through the boiler by another series of flues
or tubes.
The auxiliary combustion chamber, the function of which is hereinafter set forth
is placed, for convenience in utilizing the heat generated therein, at one end of the
boiler, but, with slight modifications, can be placed in other positions, and sub-
stantially the same results secured. This chamber is connected with the original
combustion chamber through the flues before inentioned.
A series of shorter flues or tubes, run as directly as possible between these two
chambers for the purpose hereinafter set forth.
A gas jet or series of jets supplied by a pipe from any convenient source, is
placed in the second chamber, as also is a device for the admission of air, which
may be the common form of rotary damper or any other suitable device, the form
and arrangement of the same forming no essential feature of this invention.
A feed water heating device is placed in the smoke stack and may consist
of a coiled pipe, or other convenient device, by which a similar result may be
secured.

page_text: The functions of the several parts above described, may be conveniently
explained by describing the operation of this invention, which is as follows;-
The smoke and gaseous products of combustion, generated in the original com-
bustion chamber are carried by the draft into the tubes or flues in which the
combustion thereof ceases, and a quantity of smoke and combustible gas passus
unignited into the auxiliary combustion chamber.
The smoke and gas reaching this chamber are ignited either by the gas jets
therein or other convenient device for introducing ignited or highly heated
substance into the chamber), or by highly heated products of combustion drawn
from the original combustion chamber through the flues.
As bereinbefore stated, the tubes or flues lead as directly as practical from one
combustion chamber to the other and the products of combustion drawn through
the same from the first chamber, upon entering the second are still sufficiently
heated to ignite therein the smoke and gas entering same from the flues
or tubes.
Air sufficient to support combustion, is admitted to the second chamber by means
of the damper device, which as hereinbefore stated, may be any convenient device
by which such result is accomplished.
The heat generated in the second chamber may be conveniently utilized directly
in the boiler, or in heating the feed water which supplies the boiler.
In a boiler with triple return drafts, the heated products of combustion
generated in the second chamber, are returned through the boiler by another set
of tubes, and the heat thereof utilized to a great extent in the boiler, though a
feed water henting device may be used with good results.
in regard to a feed water heating device, the general operation of such device
being well-known in the art, it is simply necessary to add that it is placed in a
convenient position to receive heat from the second combustion chamber.
The combustion of the smoke and gas in this chamber produces another result,
to wit, an increase in the draft.
If the amount of air admitted through the damper is properly regulated, the
combustion occurring in the chamber causes a partial vacuum therein, and the
rush of air and gas from the first chamber tending to destroy the same, greatly
increases the draft through tubes or flues.
Dated this 25th day of June 1894.
W. P. THOMPSON & BOULT,
Of London, Nottingham, Liverpool, and Manchester,
Agents for the Applicant.
Improvements in Apparatus for Consuming Smoke and
Combustible Gases.
A communication from LOUIS HALLBAUER, of Meriden, County of New Haven,
State of Connecticut, United States of America, Machinist.
I, ALFRED JULIUS BOULT of 323 High Holborn in the County of Middlesex,
Chartered Patent Agent, 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 aud by the following statement:-
This invention relates generally to apparatus for consuming smoke and
combustible gases used in connection with steam boiler furnaces.
This invention consists of an auxiliary combustion chamber, receiving the
gascous products of combustion from the flues which supply draft to the original
combustion chamber; a device for igniting the inflammable portion of said

page_text: products in said auxiliary chambor, and a device for admitting air thereto, to
support combustion therein.
The invention further consists of the devices, and combinations of devices,
hereinafter more specifically set forth and claimed.
The object of the invention is to provide a device that will consume a larger
portion of the heretofore unconsumed parts of the fuel, and will utilize heat
generated during such consumption, for useful purposes.
The accompanying drawings illustrate a device, embodying the invention as
applied to two forms of steam boiler, i. to a boiler with double return drafts
aid a boiler with triple return drafts.
Figure is a front view of boiler furnace, double return drafts, with sections
cut out to show application of my invention thereto.
Fig. 2 a side view of boiler furnace, triple return drafts, with sections cut away
for the same purpose.
Fig. 3 is a side view of boiler furnace, double return drafts, with sections cut
away for same purpose.
Fig. 4 is a detached view of front of boiler, showing device for admission
of air.
Similar letters of reference refer to similar parts throughout the several views.
The accompanying drawings are given as convenient illustrations only, as the
invention can be used with other forms of boiler, and in other kinds of furnace,
having analogous devices for producing and disposing of products of combustion.
Reference being had to the drawings, A represents the chamber in which the
original combustion of the fuel occurs, or is continued, including, in constructions
shown, the chamber or chambers back of the bridge wall commonly called
combustion chambers, whose function is to promote the inore complete combustion
of gases ignited in the fire box or chamber in which fuel is placed. The term
original combustion chamber, as herein used, may be said, generally, to include,
in other forms of furnace, those chambers or parts whose function is similar.
T represents the tubes or flues which supply draft to the original combustion
chamber, and carry the heated products of combustion through the boiler, which, in
forms of boiler with triple return drafts, (Fig. 2) are returned through the boiler
by a series of flues or tubes D.
C represents the auxiliary combustion chamber, the function of which is herein-
after set forth, and which is placed in the position shown in the drawings, for
convenience in utilizing the heat generated therein, but which, with slight
modifications, can be placed in other positions, and substantially the same results
secured. The chamber C is connected with chamber A through the flues T.
O represents a series of shorter tubes or flues, running as directly as practical
from the chamber C to the chamber A, for the purpose hereinafter set forth.
At y, is shown a gas jet or series of jets, supplied by the pipe P from any
convenient source.
K is a device for the admission of air to the chamber C, which, as shown, is the
common form of rotary damper, for which it is evident that any other suitable
device may be substituted, the form or arrangement of same forming no essential
feature of my invention.
The reference letter B represents a feed water heating device, placed in the
smoke stack S, which may consist of a coiled pipe, as shown, or other convenient
device, by which a similar result may be secured.
I
The functions of the several parts above described, may be conveniently
explained by describing the operation of my invention, which is as follows: The
smoke and gaseous products of combustion, generated in the original combustion
chamber A, are carried by the draft in the direction of the arrow heads into the
tubes or flues T, in which the combustion thereof ceases, and a quantity of smoke
and combustible gas passes unignited into the auxiliary combustion chamber C.
The smoke and gas thus reaching the chamber C, are ignited either by the gas
jets y (or other convenient device for introducing ignited or highly heated substance

page_text: into chamber C); or by highly heated products of combustion drawn from
chamber A through flues O, as indicated by arrow heads :. As hereinbefore
stated the flues O lead as directly as practical from chamber C to A, and the
products of combustion drawn through the same from chamber A, upon entering
chamber C, are still sufficiently heated to ignite therein the smoke and gas entering
same from the flues or tubes T. Air sufficient to support combustion, is admittedl
to the chamber C by means of the device K, which as hereinbefore stated, may be
any convenient device by which such result is accomplished. The heat generated
in chamber C may be conveniently utilized directly in the boiler, or in heating the
feed water which supplies the boiler.
In a boiler with triple return drafts, the heated products of combustion generated
in chamber C, are returned through the boiler by the tubes D, and the heat thereof
utilized to a great extent in boiler, though a feed water heating device may be
used with good results.
In regard to a feed water heating device, the general operation of such device
boing well known in the art, it is simply necessary to add that it is placed in a
convenient position to receive heat from chamber C.
The combustion of the smoke and gas in chamber C, produces another result,
to wit, an increase in the draft.
If the amount of air admitted through K is properly regulated, the combustion
occurring in chamber C causes a partial vacuum therein, and the rush of air and
gas from chamber A, tending to destroy the satne, greatly increases the draft
through tubes or flues T.
Having now particularly described and ascertained the nature of the said inven-
tion an 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 steam boiler, original combustion chamber, and flues
for supplying draft to same, of an auxiliary combustion chamber, connected through
said flues with the original combustion chamber, a device for admitting air to said
auxiliary chamber, and shorter flues connecting said chambers; substantially as
described, and for the purposes specified.
2. The combination with a steam boiler, having the flues T and D, and the
original combustion chamber A, of the auxiliary combustion chamber C, adapted
to receive the smoke and gases from chamber A, after the same have passed into
the flues T, and before the same have entered flues D; a device for admission
of air to chamber C, to support combustion therein, and a device for igniting in
said chamber C said smoke and combustible gases, all substantially as set forth,
and for the purposes specified.
3. The combination with a steam boiler, having the flues T, a feed water heating
device B, and an original combustion chamber A, of the auxiliary combustion
chamber C, adapted to receive smoke, and combustible gases from chamber A alter
the same have entered flues T and in which the feed water heater is located, and a
device for igniting, in said chamber C, said smoke and combustible gases,
substantially as described, and for the purposes specified.
Dated this 19th day of March 1895.
ALFRED J. BOULT.