Improvements in Apparatus for Creating or Increasing Draught in Boiler and other Furnaces, and for Treating. Smoke and other Products Escaping from such Furnaces.
Year: 1892

page_text: Date of Application, 21st July, 1892
Complete Specification Left, 21st Apr., 1893-Accepted, 2nd June, 1893
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Creating or Increasing Draught in
Boiler and other Furnaces, and for Treating. Smoke and other
Products Escaping from such Furnaces.
We, EDWIN WARDLE, of Boyne Engine Works, Leeds in the County of York
Engineer, and JOSEPH HENRY EVERS, of 6, Middleton Crescent, Dewsbury Road,
Leeds, aforesaid, Engineer, do hereby declare the nature of this invention to be as
follows:-
In the Specification of former Letters Patent No. 1534 of 1892 there is described
a method for increasing the draught in boiler and other furnaces and for treating
the hot gases and products of combustion (hereinafter referred to as products)
escaping from such furnaces, according to which the said escaping products are
caused to flow by means of jets of water or steam, aided it may be when necessary
by a fan or blower, through a series of pipes into a delivery chamber and thence to
the chimney, the object being to remove smoke, and deleterious or noxious vapours
or gases that may be present in the products and so that the remaining gases shall
be rendered innoxious before being discharged into the atmosphere.
Now the present invention has reference to improvements in the construction of
the apparatus employed in carrying out this method of treating the said products,
the object being to increase the efficiency thereof.
For this purpose the vertical and inclined baffle plates arranged in the delivery
chamber in front of the exit ends of the pipes as described in the said former
Specification, are according to the present invention replaced by a casing provided
with a number of perforated plates arranged horizontally one above another, and
within the delivery chamber but outside of the said casing are arranged a number
of nozzles through which water, or it may be steam, is caused to issue in a vertical
direction and impinge against baffles, also others may be arranged horizontally,
either with or without the baffles, the arrangement being such that the products
from the furnace, together with the water or steam or both injected into the said
pipes, will be caused to impinge against the casing and will then descend through
the perforated horizontal plates into the delivery chamber, in the lower portion of
which the water or condensed steam or both together with impurities removed
from the products will collect, and the partially purified products will then flow
upward towards the chimney through the spray or sheets of water issuing from the
nozzles and impinging against the baffles above them. By this means the said
products will be more effectually purified than heretofore.
The nozzles and baffles therefor can be variously constructed and arranged.
According to one arrangement the nozzles are arranged in rows one above another
in the same chamber, the baffles being in the form of flat plates fixed directly above
the nozzle outlets. In another arrangement the delivery chamber is divided into
a number of compartments arranged one above another and provided with nozzles
and baffles. In order to cause intimate contact between the escaping products and
the water issuing from the nozzles, the said nozzles may with advantage be
surrounded by other or supplementary nozzles above which baffle plates may
be fixed, or such supplementary nozzles may be so constructed as to also serve as
baffles.
Thus according to one construction the supplementary nozzles are of cylindrical
form. In another arrangement they are partly of cylindrical form and partly of
truncated conical form. In other arrangements the upper parts of the supplementary
nozzles are of conical form closed at the top and formed at the side with a number
of louvre-like openings the upper sides of which serve as baffles for the water

page_text: issuing from the nozzles. As will be obvious apparatus according to this invention
may be variously modified. Thus with a view of effecting a more intimate mingling
of the water or steam and products passing through the perforated horizontal
plates within the aforesaid casing, two or more concentrically arranged truncated
cones may be placed below said plates. Also a steam jet or other blower may be
placed at the upper part of the delivery chamber with a view of increasing the
draught through the apparatus and furnace.
Dated this 21st day of July 1892.
W. LLOYD WISE,
Per F. J. Brougham,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Apparatus for Creating or Increasing Draught in
Boiler and other Furnaces, and for Treating Smoke and other
Products Escaping from such Furnaces.
We, EDWIN WARDLE, of Boyne Engine Works, Leeds in the County of
York, Engineer, and JOSEPH HENRY EVERS of 6 Middleton Crescent, Dewsbury
Road, Leeds, aforesaid Engineer, 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 :-
In the Specification of former Letters Patent No. 1534 of 1892 there is described
a method for creating or increasing the draught in boiler.and other furnaces and
for treating the hot gases and products of combustion (hereinafter referred to as
products) escaping from such furnaces, according to which the said escaping
products. are caused to flow by means of jets of water or steam, aided it may be
when necessary by a fan or blower, through a series of pipes into a delivery chamber
and thence to the chimney, the object being to remove smoke, and deleterious or
noxious vapors or gases that may be present in the products, and so that the
remaining gases shall be rendered innocuous before being discharged into the
atmosphere.
Now the present invention has reference to improvements in the construction of
the apparatus employed in carrying out this method of creating the draught and
treating the said products, the object being to increase the efficiency of such
apparatus.
For this purpose the vertical and inclined baffle plates arranged in the delivery
chamber in front of the exit ends of the pipes as described in the said former
Specification, are according to the present invention replaced by a casing provided
with a number of perforated plates arranged horizontally one above another, and
within the delivery chamber but outside of the said casing are arranged a number
of nozzles through which water, or it may be steam, is caused to issue in a vertical
direction and impinge against battles, also others may be arranged horizontally
either with or without the baffles, the arrangement being such that the products
from the furnace, together with water or steam, or both, injected into the said
pipes will be caused to impinge against the casing and will then descend through
the perforated horizontal plates into the delivery chamber, in the lower portion of
which the water or condensed steam or both together with impurities removed
from the products will collect, and the partially purified products will then flow
upward towards the chimney through the spray or sheets of water issuing from the
nozzles and impinging against the baffles above them. By this means the said
products will be more effectually purified than heretofore.
In the accompanying drawings,
Figs. 1 and 2 are sections at right angles to one another of one form of apparatus
constructed according to this invention.
Figs. 3 and 4 are similar views to Figs. 1 and 2 showing another arrangement,

page_text: Figs. 5, 6 7 and 8 are detail views to a larger scale hereinafter referred to.
Referring to Figs. 1 to 4 inclusive, A is the delivery chamber into which the
smoke to be treated is caused to flow from a furnace or flue through pipes B on its
way to the chimney or outlet flue A'. C is the casing which takes the place of
the baffle plates referred to in the former Specification and DD are removable
perforated horizontally arranged plates with which this casing is provided. E E are
nozzles for water or steam which are fitted on supply pipes E E', and F F are the
baffles against which such water or steam is caused to impinge in such a manner as
to form a number of cup or dome-shaped films or sheets E of water through which
the gaseous products must pass on their way to the chimney or exit flue.
J is a
steam jet blower arranged at the upper part of the delivery chamber for the
purpose of increasing the draught through the apparatus and the furnace in
connection therewith. As will be obvious any other suitable form of blower or
exhauster may if desired be used for this purpose.
With the arrangement described it will be seen that the products from a furnace,
together with water or steam or both, injected into the pipes B for driving them
forward will be caused to impinge against the casing C and will descend through
the perforated horizontal plates whereby an intimate mingling of such products
with the water or steam or both will be effected. The water or condensed steam,
or both, with the impurities removed from the products will collect in the lower
part A of the delivery chamber, whence it or they can be withdrawn through an
outlet A either continuously or intermittently as desired. The partly purified
products will flow upward through the delivery chamber outside the casing C and
through the sheets or films E2 of water thereby becoming effectually washed
before escaping into the chimney.
The nozzles and baffles therefor can be variously constructed and arranged.
In the arrangement shown in Figs. 1 and 2 the nozzles are arranged in rows one
above another the baffles F being in the form of flat discs fixed directly above the
nozzle outlets to cross bars or bearers F the nozzles and baffles being arranged
alternately at different heights so that the several cup shaped sheets or films of
water overlap each other in such a way that there is practically no exit for the
products except through the sheets or films of water. In the arrangements shown'
in Figs. 3 and 4 the delivery chamber A is divided into a number of superposed
compartments by perforated horizontal partitions G and a row of nozzles É and
baffles F is provided in each compartment.
In order to cause more intimate contact between the escaping products and the
water issuing from the nozzles, the said nozzles may with advantage be surrounded
by other or supplementary nozzles through which the escaping products must
pass and above which baffle plates F may be fixed as shown, or such supplementary
nozzles may be so constructed as to also serve as baffles.
In the construction shown in Fig. 5 the supplementary nozzle is of cylin-
drical form. In another arrangement shown in Fig. 6, they are partly of cylin-
drical form and partly of truncated conical form this being also the arrangement
employed in Figs. 3 and 4. In the arrangements shown in Figs. 7 and 8 the
upper parts of the supplementary nozzles are of conical form closed at the top by
a dished plate H and formed at the side with a number of louvre-like openings H
the upper sides of which serve as baffles for the water issuing from the nozzles
these openings being downwardly directed in Fig. 7 and upwardly directed in
Fig. 8.
As will be obvious apparatus according to this invention may be
variously modified. Thus with a view of effecting a still more intimate mingling
of the water or steam and products passing through the perforated horizontal
plates D within the casing C, two or more concentrically arranged truncated
cones I may be placed below said plates as shown in Fig. 3. Also the water
instead of issuing vertically upwards from the nozzle may issue horizontally, and
baffles may be dispensed with provided the water issuing from the nozzles is
caused to assume the form of sheets or films through which the products must pass
on their way to the chimney.

page_text: Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed we declare that what we
claim is
1. In apparatus for creating or increasing draught in boiler and other furnaces
and for treating smoke and other products escaping from such furnaces, a delivery
chamber containing a casing provided with horizontally arranged perforated plates
and outside of said casing a number of nozzles with or without baffles through
which water is caused to issue, the arrangement being such that products entering
the said chamber from a furnace together with water or steam, or both, used to
propel such products forward will impinge against the casing and thus become
intimately mixed and will then descend through the perforated plates into the
delivery chamber the lower portion of which the water together with impurities
removed from the products will collect, whilst the partially purified products will
flow upward outside the said casing towards the chimney and through the spray or
sheets of water issuing from the nozzles arranged within this part of the chamber.
substantially as herein described.
2. Our improved apparatus for treating the products from boiler and other
furnaces comprising a delivery chamber enclosing a casing provided with horizon-
tally arranged perforated plates, and with nozzles and baffles, substantially as
hereinbefore described with reference respectively to and shown in Figs. 1 and 2
and in Figs. 3 and 4 of the accompanying drawings, whether or not said nozzles
be used with supplementary nozzles such as shown in Figs. 5 to 8 inclusive for the
purposes specified.
Dated : 10th 1 A 100”
W. Lloyd Wise,
EDWIN WARDLE.
J. H. EVERS.
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicants.