Improvements in Apparatus for Treating the Fire Gases Evolved in Steam Boiler and other Furnaces.
Year: 1895

page_text: Date of Application, 22nd' Feb., 1895
Complete Specification Left, 23rd Sept., 1895-Accepted, 26th Oct., 1895
BROVISIONAL SPECIFICATION.
Improvements in Apparatus for Treating the Fire Gases Evolved in
Steam Boiler and other Furnaces.
I, JAMES PATTERSON, of 67 Landressy Street, Bridgeton, in the County of the
City of Glasgow, North Britain, Engineer, do hereby declare the nature of this
invention to be as follows:-
The present invention relates to improvements in apparatus for treating the gases
evolved in steam boiler and other furnaces in which a fan is employed in combination
with jets of water or other liquid for the purpose of causing such gases to be
intimately mixed with the water or other liquid and thereby condensed.
In order to reduce the volume of gases to be treated, and consequently
correspondingly reduce the power necessary to drive the fan in which such
treatment takes place, I cause a jet or jets of water to act upon such gases before
the same enter the fan.
I further employ an inducing nozzle or nozzles having an injecting action for the
purpose of introducing the gases and also the water into the fan casing. The gases
to be treated (preferably after having been first subjected to the action of jets of
water as above described) pass through the centre of the inducing nozzle or nozzlės,
while the water under pressure is introduced into an outer casing surrounding such
centre nozzle or nozzles, both the gas and the water passages leading into a
perforated inner box which opens into the fan casing.
The water passing through the outer casing of the nozzle or nozzles would have
an inducing or injector action and assist the fan in drawing the gases into the fan
casing, the water and gases entering such casing together and being acted upon by
the revolving vanes or blades of the fan so as to produce an intimate commingling
of the two and thus condensing or separating the solid particles of the gases, and
increasing the draught:
Dated this 22nd day of February 1895.
ALLISON BROS.,
Agents for the Applicant.
Improvements in Apparatus for Treating the Fire Gases Evolved in
Steam Boiler and other Furnaces.
I, JAMES PATTERSON, formerly of 67 Landressy Street, Bridgeton, in the
County of the City of Glasgow, North Britain, but now of 63 Royal Street,
Gourock, in the County of Renfrew, North Britain, 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 :-
The present invention relates to improvements in apparatus for treating the
gases evolved in steam boiler and other furnaces in which a fan is employed in
combination with jets of water or other liquid for the purpose of causing such gases
to be intimately mixed with the water or other liquid and thereby condensed.

page_text: In order to reduce the volume of gases to be treated, and consequently
correspondingly reduce the power necessary to drive the fan in which such
treatment takes place, and also the size of the fan required, I cause a jet or
jets of water or other suitable liquid to act upon such gases before the same enter
the fan.
4
I further employ an inducing nozzle or nozzles having an injecting action for the
purpose of introducing the gases and also the water into the fan casing.
The gases to be treated (either before or after having been subjected to the
action of jets of water as above described) pass through the centre of the inducing
nozzle or nozzles, while the water or other suitable liquid under pressure is
introduced into an outer casing surrounding such centre nozzle or nozzles, and both
the gas and the water then pass into the fan casing.
The water passing through the outer casing of the nozzle or nozzles would have
an inducing or injector action and assist the fan in drawing the gases into the fan
casing, the water and gases entering such casing together and being acted upon by
the revolving vanes or blades of the fan so as to produce an intimate commingling
of the two and thus condensing or separating the solid particles of the gases, and
increasing the draught.
A suitable form of apparatus for carrying the invention into effect is illustrated
in the accompanying drawings, in which
Fig. 1 is a longitudinal section of such apparatus.
Fig. 2 a transverse section thereof.
Fig. 3 is a vertical section of a suitable form of pipe or nozzle for delivering the
jet or jets of water for condensing the gases before same enter the fan, and
Fig. 4 a partial vertical section through the ring surrounding the inducing nozzle
so as to produce an injecting action to assist in drawing the gases into the
fan casing.
Figs. 3 and 4 are drawn to a larger scale than Figs. 1 and 2.
A is a motor which may be of any suitable form, and which actuates the fan B
in which the gases are to be treated. The casing B1 of the fan B is connected by
a suitable passage B2 to the funnel, uptake or flue U through which the gases to be
treated pass from the furnace or other source where they are generated. The
passage B' is preferably fitted with a damper P so as to enable such passage to be
opened or closed to a smaller or greater extent in order to regulate the draft, and
the funnel or uptake U is also fitted with a damper N above the passage B
in order to be able to close this also to a smaller or greater extent, or entirely.
The fan casing B1 is also connected with the funnel or uptake U by a passage
at a point above that where the damper N is situated, and through this passage F
pass the gases after treatment in the fan B.
F
An inducing nozzle C is situated in the passage B2 leading to the fan casing, and
surrounding such nozzle is a ring H having perforations J, through which water
under pressure is caused to issue in the direction leading to the fan casing. At any
suitable distance in front of the inducing nozzle C a pipe or pipes K is or ar
arranged, same being preferably of the form shown in Fig. 3, so that water issuing
from the opposed open mouths of such pipe or pipes will be converted int
spray so that the gases passing through same on their way to the fan B wil
become intimately mixed therewith and their volume consequently considerably
.diminished.
If desired the positions of the inducing nozzle C and the pipe or pipes K migh
be reversed, or the former might be dispensed with if desired.
The gases are drawn by the action of fan B (assisted by the injecting action o
the nozzle C and the surrounding ring H wheu same are employed) through th
passage B2 into the fan casing B, whereby they become charged with water from
the jet or jets delivered from pipe K and also from the inducing nozzle C wher
same is employed. The gases thus charged with water are acted upon by th
blades of fan B and absorb or condense smoke, dust or solid particles from suc
gases. After such treatment the gases pass into a receiver R in the bottom o
!

page_text: which the water containing the impurities absorbed from the gases collects, and
may be removed from time to time through the outlet E, while the purified gases
pass upwards from such receiver through the passage F and into the funnel
or uptake U above the damper N, and so to the outlet.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. The combination with the funnel, uptake or flue of a furnace or other part
where gases are generated, of a fan connected with such funnel, uptake or flue, and
of a jet or jets of water through which the gases are caused to pass on their way to
the fan, substantially as and for the purpose specified.
2. The combination with the funnel, uptake or flue of a furnace or other part
where gases are generated, of a fan connected with such funnel, uptake or flue, a
jet or jets of water through which the gases are caused to pass on their way to the
fan, and of an inducing nozzle serving to assist in drawing the gases into the
former, all substantially as and for the purpose specified.
Dated this 23rd day of September 1895.
ALLISON BROS.,
Agents for the Applicant.