Improvements in Means for Consuming Smoke and Economizing Fuel in Steam Boilers.
Year: 1885

page_text: "
Improvements in Means for Consuming Smoke and Economizing
Fuel in Steam Boilers.
I WILLIAM KNEEN of 66 Scott Street Barrow-in-Furness in the County
of Lancaster Builder do hereby declare the nature of my said Invention for
'IMPROVEMENTS IN MEANS FOR CONSUMING SMOKE AND ECONOMIZING FUEL IN
STEAM BOILERS" to be as follows:-
My Invention has for its principal object to consume the smoke or combustible
products from the furnaces of steam boilers which would otherwise escape. I thus
effect great economy in fuel.
According to my Invention I provide in or near the rearward part of the furnace
or furnaces (so as to be heated by the flames therefrom) contracted passages or
chambers which are provided with zig zag walls or baffling surfaces. The flue or
flues from the furnace or furnaces are continued so that they conduct the smoke
and unconsumed products of combustion on their way to the chimney into these
contracted passages by which they are divided into numerous small streams which
are caused to impinge against the zig zag walls or their equivalents provided
therein. Air is supplied by a fan or otherwise to the gases as they pass into each
of the contracted passages and as the surfaces in the said contracted passages are
in a highly heated condition the gaseous mixture is ignited as it impinges against
the said surfaces which causes a generation of great additional heat thereby greatly
augmenting the heating power of the boiler relatively with the amount of fuel
consumed and preventing or greatly reducing nuisance from escaping smoke.
The flames resulting from the ignition of the gaseous mixture may be conducted
by a return flue so as to utilize the heat therefrom.
The invention may be applied to the consumption in steam boilers of smoke
from coke ovens or other places where smoke is generated.
Dated L 1
2 T
100

page_text: Improvements in Means for Consuming smoke and Economising
Fuel in Steam Boilers.
I WILLIAM KNEEN of 66 Scott Street Barrow in Furness in the County
of Lancaster Builder 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:—
My Invention has for its principal object to consume the smoke or combustible
products from furnaces or fires which would otherwise escape I thus effect economy
in fuel.
According to my Invention I provide in the rearward part of the furnace or
furnaces or so as to be heated by the flames therefrom contracted spaces or
"chambers constituting zig zag passages or baffling surfaces. The flue or flues from
the furnace or furnaces conduct the smoke and unconsumed products of combustion
on their way to the chimney into these contracted spaces or chambers by which
they are divided into numerous small streams which are caused to impinge against
the baffling surfaces provided therein. Air is supplied by a fan or otherwise
to the gases as they pass into each of the contracted passages and as the surfaces
in the said contracted passages are in a highly heated condition the gaseous
mixture is ignited as it impinges against the baffling surfaces which causes a
generation of great additional heat thereby greatly augmenting the heating power
of the furnace or fire relatively with the amount of fuel consumed and preventing
or greatly reducing nuisance from escaping smoke The flames resulting from the
ignition of the gaseous mixture may be conducted by a return flue so as to utilize
the heat therefrom.
The Invention may be applied to the consumption of smoke from Coke Ovens or
other places where smoke is generated.
And in order that my said Invention may be fully understood I shall now
proceed more particularly to describe a manner of performing the same and for
that purpose shall refer to the several figures on the annexed sheet of drawings
the same letters of reference indicating corresponding parts in all the figures.
The accompanying drawing represents a portion of a steam Boiler sufficient 'to
explain the said application of my Invention. Figure 1 is a vertical section
figure 2 a horizontal sectional plan and figure 3 a transverse vertical section at the
rear of the bridge. In the flue at the rear of the bridge I build a chamber A of
fire clay or other suitable material having on it a number of zig-zag passages a
through which the products of combustion from the furnace B pass. In front of
the structure A are conduits pipes or passages C which open into an air chamber D
into which air is led by a pipe E. Into these pipes conduits or passages air from
à blower or air forcing apparatus is forced the said air becoming heated in its
passage and issuing in a number of jets or in a divided state from the orifices cinto
the passages a where it and the products of combustion commingle and are baffled
by the various surfaces against which they impinge and the air causes effective
burning of the said products and the generation of great additional heat.

page_text: It will be understood that the Invention can be employed generally for the
consumption of smoke and economy of fuel in furnaces and fires and that smoke or
products of combustion from any source can according to my Invention be passed
through zig-zag heated passages or against equivalent baffling surfaces and be
mixed with air in fine streams or jets for the generation from the said products
of heat that would otherwise be wasted.
ぐ
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed I declare that what
I claim is
In furnaces or fires or in connection therewith the combination of zig-zag heated
passages or baffling surfaces and means for passing air in a finely divided state or
as jets thereinto substantially as and for the purposes herein before described.
Dated this Seventeenth day of October 1885.
WILLIAM KNEEN.