the Furnaces of Marine and other Boilers.
Year: 1885

page_text: the Furnaces of Marine and other Boilers.
WILLIAM MENZIES Engineer 17 Osborne Road Newcastle-on-Tyne do hereby
declare the nature of my invention for THE COMBINATION OF POWDERED AND
LIQUID FUEL FOR SUPPLYING THE FURNACES OF MARINE & OTHER BOILERS to be
as follows: -
There has hitherto been great difficulty, loss and nuisance in the employment of
crude fuel (such as Coal and other natural and artificial fuel) owing to its being
applied in such a manner as to fail to accomplish free and complete combustion.
The object of the present invention is to supply Boilers and Furnaces with an
admixture of powdered coal or other dry fuel, and oil or other liquid fuel, and air,
and moisture or either or any of them in such proportions and in such a manner as
best to attain perfect combustion.
This is effected by blowing the powdered fuel and oil by separate air or steam
injectors into the Boiler furnace. The steam or air may be at any suitable
temperature.
..
The injectors and other necessary appliances are fitted on Furnace front. plates.
According to one arrangement the powdered fuel is charged into a hopper, with
a regulating valve at the bottom which allows the fuel to pass into the annular
space surrounding the central air or steam jet. At another part of the Furnace
front two or other suitable number of injectors are fixed, by which the oil is blown
into the Furnace by the action of the air, or steam jet. The blast to each injector
may be regulated by suitable cocks.
The powdered fuel and oil are consumed together in the Furnace.
There are two kindling or peep boles placed in the Furnace front having covers.
Also an Ash door at the bottom of the Furnace front, for cleaning out ashes &c.
1007

page_text: the Furnaces of Marine and other Boilers.
I, WILLIAM MENZIES of 17 Osborne Road Newcastle on Tyne, Engineer do hereby
declare the nature of my invention for BURNING ARTIFICIAL FUEL IN FURNACES
and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement :-
The object of my Invention is to supply Boilers and Furnaces with an admixture
of powdered coal or other dry fuel and oil or other liquid fuel together with air
and moisture or any or either of these in such proportions and in such a manner
as best to obtain perfect combustion.
In order to effect this I blow the powdered fuel into the furnace either by
injectors or by compressed air or by means of a fan and inject the oil or liquid fuel
into the same furnace by.separate air or steam injectors, the steam and air being
at any suitable temperature.
The injectors and other necessary appliances are fitted on the furnace front
plates.
According to one arrangement the powdered fuel is charged into a Hopper, fitted
with a regulating valve at the bottom which allows the fuel to pass either into the
annular space surrounding the central, air or steam jet or in front of the jet. In
another part of the front two or other suitable number of injectors or fixed, by
which the oil is blown into the furnace by the action of the air or steam jet.
Each of the injectors may be regulated separately by suitable cocks or valves,
The Hopper and dry fuel injector may be placed so as to discharge the powdered
fuel at the end of the furnace opposite to the oil injectors.
Kindling or peep holes are provided in the furnace front for cleaning out ashes.
The powdered fuel may be fed in by means of. an injector, compressed air, the
blast from a fan or may be distributed by means of beaters or rapidly revolving
wheels or any other suitable method for producing a regular feed-The oil may be
forced in by a pump or by means of injectors worked by compressed air steam or
other suitable means. The Furnace front plate is lined with firebrick and firebrick
coverings or baffle plates may be placed in the furnace or combustion chamber
wherever required.
In order that my said Invention and the manner of performing the same may
be properly understood I hereunto append one sheet of explanatory diagrams to be
hereinafter referred to and representing one form of my improved apparatus
Fig. 1. is a longitudinal section through the furnace of a Boiler and Fig. 2 is an
elevation of the front of the said Furnace.
The powdered fuel is charged into the Hopper H. on the front of the Boiler and
falls through the regulating valve R, down the shoot to the injector I. which blows
it into the Furnace.
The oil Injectors O. O. are fixed in the furnace front plate and discharge the oil
in a fine spray into the furnace so as to mix with the powdered fuel so that the oil
and coal dust are consumed together in the furnace.

page_text: 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 :-
1. In combination with the Furnace of a Boiler an apparatus for injecting or
blowing in a jet of powdered coal or other dry fuel and a jet or jets of liquid fuel
so arranged that the powdered fuel and liquid fuel will be consumed together as
hereinbefore described.