AN IMPROVED METHOD OF UTILIZING THE WASTE RESIDUES OF FUEL
Year: 1884

page_text: 1 WILLIAM HEATHER SPENCE of 8 Quality Court, Chancery Lane in the County
of Middlesex Patent Agent do hereby declare the nature of the said Invention for
AN IMPROVED METHOD OF UTILIZING THE WASTE RESIDUES OF FUEL, being a
communication to me from abroad by Frederick William Christian Waldeck of
Hague in the Kingdom of the Netherlands to be as follows:-
Whereas many trials have been made to utilize the pulverous residues from coal,
coke, peat and other kinds of fuel which are now considered as waste materials, by
adding coal or other unburnt fuel and forming the mixture into bricks or cakes
by the aid of some binding material: and whereas it has always been found that
the amount of unburnt coal or other fuel needed was so great as to increase the
cost of such composition, without correspondingly increasing the heating power of
the same.
Now the object of this invention is the preparation of a new and useful fuel
from the waste residues before mentioned with a small addition of coal, or other
suitable unburnt fuel, at a moderate cost.
And this is effected by mixing the pulvorous waste residues of cral or other
suitable unburnt fuel with tar or other fluid caburet of hydrogen; and lastly an
alkaline solution is added forming a kind of emulsion with the fluid carburets,
which emulsion is absorbed by the pulverous material, coal and tar.
The whole can then be inade into cakes or other suitable form as required.
The proportions of the composition may be varied according to the pulverous
residues to be utilized.
The following formula may be taken as an example, the coke dust from coke-
kilns and in gas works being the residue to bo utilized.
Take 9 hectolitres of coke dust.
I
22
of middle fine black coal.
9 litres of coal tar diluted by 1 litre of ordinary petroleum.

page_text: of calcined carbonate of sodium (dissolved in from 15 to 20 litres of water) is added
to form an emulsion as before stated, and the composition may then be made into
cakes of any suitable form, and dried. Instead of carbonate of sodium, any other
alkaline solution may be employed, such as for instance Potassa.
14h 1001.
I WILLIAM HEATHER SPENCE of 8 Quality Court Chancery Lane in the County
of Middlesex Patent Agent do hereby declare the nature of the said Invention
for "AN IMPROVED METHOD OF UTILIZING THE WASTE RESIDUES OF FUEL," (being
a communication to me from abroad by Frederick William Christian Waldeck of
Hague in the Kingdom of the Netherlands) and in what manner the same is to
be performed to be particularly described and ascertained in and by the following
statement:-
Whereas many trials have been made to utilize the pulverous residues from coal
coal peat and other kinds of fuel which are now considered as waste materials by
adding coal or other unburnt fuel and forming the mixture into bricks or cakes by
the aid of some binding material-It has always been found that the amount of
unburnt coal or other fuel needed was so great as to increase the cost of such
composition without correspondingly increasing the heating power of the same.
Now the object of this Invention is the preparation of a new and useful fuel
from the waste residues before mentioned with a small addition of coal or other
suitable unburnt fuel at a moderate cost.
And this is effected by mixing the pulverous waste residues of coal or other
suitable unburnt fuel with tar or other fluid carburet of hydrogen and lastly an
alkaline solution is added forming a kind of emulsion with the fluid carburets
which emulsion is absorbed by the pulverous material coal and tar-The whole can
then be made into cakes or other suitable form as required.
The proportions of the composition may be varied according to the quality of
the pulverous residues to be utilized.
The addition of tar or other carburets of hydrogen is so insignificant that it
could never effect and ensure a regular combustion as required of a useful fuel if
the alkaline solution was not applied-Alone by the application of such alkaline
solution a new fuel may be prepared from the pulverous waste material at a cost
adequate to its heating power.
The following formula may be taken as an example the coke dust from coke
kilns and in gas works being the residue to be utilized.
Take 9 hectolitres of coal dust.
1
"
of middle fine black coal.
9 litres of coal tar diluted by one litre of ordinary petroleum.
The coke dust and black coal are well nowdered and mixed and the diluted tar

page_text: of calcined carbonate of sodium (dissolved in from 15 to 20 litres of water) is added
to form an emulsion as before stated and the composition may then be made into
cakes of any suitable form and dried. Instead of carbonate of sodium any other
suitable alkaline solution may be employed such as, for instance, a solution of
potassa.
Having now particularly described and ascertained the nature of the said
Invention and in what manner the same is to be performed (communicated to me
from abroad as aforesaid) I declare that what I claim is:
The preparation of fuel from the waste material or pulverous residues of com-
bustible matters by mixing the same with solid fuel and fluid carburets of hydrogen
together with the addition of an alkaline solution such as caustic alkali or alkaline
carbonates substantially as and for the purpose hereinbefore described.
WH. SPENCE.
W. Spence & Son,
Agents for the said Wm H. Spence,
8, Quality Court, Chancery Lane.