Improvements in the Dessication, Incineration, and Carbonization of Precipitants or Solids Resulting from Sludge or other Substances Liable to Putrify, and in Means or Apparatus Employed therein.
Year: 1886

page_text: Date of Application, 27th Sept., 1886
Complete Left, 24th June, 1887
Complete Accepted, 25th Nov., 1887
Improvements in the Dessication, Incineration, and Carbonization
of Precipitants or Solids Resulting from Sludge or other
Substances Liable to Putrify, and in Means or Apparatus
Employed therein.
I, RICHARD DE SOLDENHOFF of 71 St. Mary Street, Cardiff in the county of
Glamorgan, Engineer, do hereby declare the nature of this invention to be as
follows:-
The object of this invention is to incinerate sludge in connection with the
manufacture of coke with coking coals.
To attain this object I propose to employ furnaces similar to those described
in the specification of my patent No. 2721 of the year .1886 with the following
differences.
First. The upper chamber in order to be an incinerating sludge chamber as
well as drying chamber is provided with openings situated in the upper part of
the side walls and leading to the air flues.
Second. The upper chamber may have, not as in the above named patent a
horizontal floor, but an inclined one, from the middle charging holes to the front
door or doors as the case may be and in that case the charging hole will be so
situated in the summit of the angle which forms the line of the floor.
Third. The middle charging hole will be the charging hole of the lower chamber
and will be always open so that the upper chamber shall communicate through it
with the lower chamber.
Through the opening as named all the gases and vapours generated during the
process of drying or incinerating the sludge will descend into the lower chamber
which will be a coking or incinerating chamber as the case may he.
Fourth. The upper chamber will be provided with two or three charging holes
situated on the top.
Fifth. The waste gases before reaching the main flue, shall if required be taken
into the side walls of the upper chambers through horizontal flues communicating
with them. The arrangement above proposed does not apply solely to the furnaces
described in the specification of patent No. 2721 before referred to, but also to all

page_text: existing systems of coke ovens, which by very slight alteration may be used for the
purpose and be worked as hereinafter described.
The mode of working is as follows:-
First the lower chambers are brought to red heat then through the middle charging
hole which also constitutes the connection between the upper and lower chamber, the
coal for coking is introduced, then it is levelled through one or two doors as the case
may be, after which the doors being closed, the operation of coking commences.
When the operation of coking is in its full swing, then the sludge is introduced
through the upper charging holes to the upper chamber the sludge is levelled through
one or two doors; the charging holes and the doors are then closed and the air
is let in.
The incineration of the sludge is effected by the heat of the floor and of the side
walls and by the contact of hot air.
When the coke is ready the doors are opened and the coke taken out; the same
will apply to the upper chamber and to the discharging of the ash resulting from the
incineration of sludge.
In case the incineration is to be performed in the lowest chamber, then after the
coke has been taken out, the dry sludge of the upper chamber is dropped into the
lowest chamber.
In that case the upper chamber is the drying and the lower one the incinerating
chamber.
It must be understood that in the whole of this process the volatile matters of
the fuel are perfectly sufficient to produce coke and to incinerate the sludge.
It must be stated also that owing to the ashy matter of the sludge, the latter
when introduced to the furnaces and submitted to the action of heat and oxidizing
action of the air has to be periodically turned by a kind of rabel. This last modi-
fication accelerates the incineration and in order to do, so each door is provided
with a sort of ram, the handle of which passes through the door. The ram or rabel
may be operated mechanically or by hand.
The gases escaping from the incinerating chamber are always obnoxious and it is
only the high temperature and oxidising atmosphere that destroys them. For this
reason I bring those gases into contact with the incandescent fuel of the coking
chamber, with the incandescent brickwork of the flues of the lower chamber and also
I mingle them with hot gases of the lower chamber.
Dated September 27th 1886.

page_text: ApparaUES
Employed therein.
I, RICHARD DE SOLDENHOFF of 71 St. Mary Street, Cardiff in the County of
Glamorgan, 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 object of this invention is to incinerate sludge in connection with the
manufacture of coke with coking coals.
My present invention is illustrated in the accompanying drawings in which
Figure 1 represents a cross section of the improved furnace. Figure 2 horizontal
sections drawn on the line 1. 2. 3. 4. of Figure 4. Figure 3 horizontal sections
drawn on the line 5. 6. 7. 8. of Figure 4. Figure 4 a vertical longitudinal
section drawn on the line 9. 10. of Figure 1. Figure 5 is a vertical longitudinal
section drawn on the line, 11. 12 of Figure 1. Figure 6 is a horizontal section
drawn on the line 13. 14. of Figure 4. Figure 7 is a horizontal section drawn on
the line 15. 1€ of Figure 4 and Figure 8 is a horizontal section drawn on the
line 17. 18. of Figure 4. Figures 9 to 13 are various views representing the rabel
employed in combination with the improved furnace.
In all the figures like parts are indicated by similar letters or reference.
To attain the object of my present invention I propose to employ furnaces similar
to those described in the specification of my Patent No. 2721 of the year 1886 with
the following differences.
First the upper chamber A in order to be an incinerating sludge chamber as well
as a drying chamber is provided with openings a' situated in the upper part of the
side walls and leading to the air flues F.
Second the upper chamber A may have, not as in the above named Patent, a
horizontal floor, but an inclined one from the middle charging holes a to the front
door or doors B, B¹, as the case may be and the charging hole a, will be situated
above the summit of the angle which forms the line of the floor of said chamber A.
Third-the middle charging hole a will be immediately over the charging hole a*
of the lower chamber B and the latter will be always open so that the upper
chamber A shall communicate through it with the lower chamber B.
Through the central charging opening a*, all the gases and vapours generated
during the process of drying or incinerating the sludge will descend into the lower
chamber B which will be a coking or incinerating chamber as the case may be.

page_text: Fourth the upper chamber A will be provided with two or more charging
holes a², a² situated on the top and employed exclusively for feeding such upper
chamber A.
Fifth the waste gases before reaching the main flue J shall if required be taken
into the side walls of the upper chambor A through inclined flues F formed within
such side walls and communicating with said chambers A through openings a¹.
The arrangement above described does not apply solely to that construction of
furnaces described in the specification of Patent No. 2721 before referred to, but also
to all existing systems of coke ovens, which by very slight alteration may be used
for the purpose and be worked as hereinafter described.
The mode of working is as follows:-
First the lower chambers B are brought to red heat, then through the middle
charging hole a which also constitutes the connection between the upper chamber A
and the lower chamber B, the coal for coking is introduced, then it is levelled through
one or two doors B³ as the case may be after which the doors B₁ being closed the
operation of coking commences. When the operation of coking is in its full swing
then the sludge or other substance to be incinerated is introduced through the upper
charging holes a² to the upper chamber A the sludge is levelled through one or
two doors bb; the charging holes a and the doors b, 6, are then closed and the air
is let in by openings a¹ drawing the air from flues F, F.
The incineration of the sludge is effected by the heat of the floor A¹ and of the
side walls and by the contact of hot air. When the coke is ready the doors B¹ of
the lower chamber B are opened and the coke taken out; the same will apply to the
upper chamber A and to the discharging of the ash resulting from the incineration
of sludge or other material.
In case the incineration is to be performed in the lower chamber B then after the
coke has been taken out the dry sludge or other material of the upper chamber A is
dropped into the lower chamber B. In that case the upper chamber A becomes the
drying chamber and the lower one B the incinerating chamber.
It must be understood that in the whole of this process the volatile matters of
the fuel are perfectly sufficient to produce coke and to incinerate the sludge or other
material.
It must also be stated that owing to the ashy matter of the sludge, the latter
when introduced to the furnaces and submitted to the action of the heat and to
the oxidizing action of the air has to be periodically turned by a kind of rabel.
This last modification accelerates the incineration and in order to do so each
door b, and B₁ is provided with a sort of ram X the handle X¹ of which passes
freely through a hole formed in the door whilst the ram X has a rabel or scraper X2
fixed thereon as shown. In the drawings I have represented this rabel as applied
only to the doors b, b1 but when the lower chamber B is to bo used as an incinerating
chamber then the doors B' will be similarly provided.
The ram or rabel may be operated mechanically or by hand.
The gases escaping from the incinerating chambers are always obnoxious and it
is only the high temperature and oxidizing atmosphere that destroys them or renders
them harmless.
For this reason I bring those gases into contact with the incandescent fuel of
the coking chamber with the incandescent brickwork of the flues of the lower
chamber and I also mingle them with hot gases of the lower chamber.
The flues and passages, so far as they correspond with those shown and described
in the specification herein before referred to are marked with similar letters of
reference to those therein employed and the courses taken by the air and gases are
indicated by the arrows.
my
said
Having now particularly described and ascertained the nature of
invention and in what manner the same is to be performed I declare that what I
claim is :-
1 The designation
incineration and carbonization of precipitants or solids

page_text: resulting from sludge or other substances liable to putrify by means of the improved
process and apparatus substantially as herein shown and described.
2. The desiccation incineration and carbonization of precipitants or solids
resulting from sludge or other substances liable to putrify in connection with the
manufacture of coke with coking coals by the improved process and apparatus sub-
stantially as herein shown and described."
3. The desiccation, incineration and carbonization of precipitants or solids
resulting from sludge or other substances liable to putrify by the heat and gases
given off in the process of making coke with coking coals substantially as herein
described.
01 1
T
1000