Improvements in the Method of Creating Draught in Boiler and other Furnaces, and in Apparatus for the Treatment of Smoke.
Year: 1892

page_text: COMPLETE SPECIFICATION.
Improvements in the Method of Creating Draught in Boiler and
other Furnaces, and in Apparatus for the Treatment of Smoke.
We, EDWIN WARDLE of the Boyne Engine Works Leeds, in the County of
York, Engineer, and JOSEPH HENRY EVERS, 6 Middleton Crescent, Dewsbury
Road, Leeds in the said County, Engineer, do hereby declare the nature of the
said invention, and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:-
Our present invention of improvements in the method of creating draught and in
apparatus for the treatment of smoke, as generally produced not only by steam
boiler furnaces but by other furnaces in which coal or other carbonaceous matter is
consumed.
Our object is to create a draught for boiler furnaces or other fires by means of a
jet or jets of water or steam which will at the same time dispel all or the greater
portion of noxious vapours contained therein and also remove and collect carbon or
Other substances known to exist therein.
The above we effect by our improved apparatus arranged therefor which
comprises, though we do not claim the usual chimney shaft for receiving the smoke
as it emerges from a furnace. In the said shaft at a convenient part we place a
damper, below this we form a communication (say about the same capacity as the
chimney, more or less) with an air-tight chamber, and in order to assist the above
named water (or steam) jets in creating draught where sufficient water pressure is
not available, we place opposite the said communication a steam jet pipe or pipes
or if preferred, a fan or blower may be employed for acting upon the smoke and
causing it by such induced current to pass into the said air-tight chamber. At one
or more sides of said chamber (which we will call No. 1.) we mount or otherwise
connect a series of smoke pipes whose other ends are connected to another chamber
(which we will call No. 2).
This chamber is provided with a suitable shaft for the escape of vapours which
become eliminated from the smoke during its treatment in the apparatus now being
referred to.
Into this
Within the smoke chamber No. 1, and opposite to the above named series of
pipes we place a pipe of suitable configuration that shall cover the area occupied
by the said series of smoke pipes and which we supply with water under pressure
from any convenient source, or steam as may be found most desirable.
pressure pipe we insert the same number of nozzles as there are smoke pipes h,
these nozzles enter a short distance into the said smoke pipes (one into each) and
force or induce the smoke to pass through them either by water or steam pressure
as previously referred to thus creating the draught for the furnace, during which
the smoke undergoes a washing and elimination therefrom of noxious vapours
which may pass into the atmosphere by the shaft above referred to upon
No. 2. chamber. Before the eduction ends of the series of smoke pipes we place
a baffle plate for the smoke and water or steam to impinge against as the case
may be, and to direct the smoke downwards and cause the water or steam to
wash the smoke, we also place a number of plates perforated or otherwise below
one or more of the said series of smoke pipes. Heavy portions of the smoke
such as carbon becoming eliminated therefrom during the above washing while
passing through the said smoke pipes will descend to the bottom of No. 2. chamber.
Water or condensed steam will also descend to the bottom of said chamber and be
used over again by being raised by any convenient method either into an overhead
tank or into the aforesaid pressure pipe.
The annexed drawing is a sectional elevation of our improved apparatus above
LD

page_text: referred to.
a, is the flue for conveying the smoke from the furnace in which and
as it is produced, to b, the chimney, c, is the damper, d, is the communication from
the chimney and of suitable capacity through which the smoke is caused to pass
being aided when necessary by e, a steam jet for accelerating such passage into the
air-tight chamber No. 1.-or as previously referred to a fan or a blower may be
used for the purpose. f. is the water or steam pressure pipe, g, g, are water or
steam jet nozzles, each entering respectively into a smoke pipe opposite thereto, and
propelling or inducing the smoke to pass through the series of smoke pipes h, at the
same time washing the smoke and eliminating the vapours and carbon therefrom as
it passes into the chamber No. 2. the vapours passing out at the shaft i, and the
carbon j, and water to the bottom of such chamber, from which the water is again
utilized as above described and the carbon removed as often as necessary, provision
being made therefor. k, is the baffle plate perforated or otherwise for the smoke
and water or steam to impinge against on issuing from the smoke pipes h. 1, are
perforated plates, allowing water smoke, vapours and carbon a free passage.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is
1. The improved method of creating draught from the fire and of treating the
smoke therefrom in our improved approved apparatus substantially as hercinabove
described for the purposes specified.
2. For the treatment of smoke by which the elimination of noxious vapours and
carbon is effected, the use of our improved apparatus constructed, arranged and
operating substantially as hereinabove illustrated and set forth.
Dated this 25th day of January 1892.
THOS. EDWIN CRAVEN,
For the Applicants.