Improvements in Apparatus for Use in the Manufacture of Coal Gas.
Year: 1899

page_text: Date of Application, 21st Dec., 1899-Accepted, 10th Mar., 1900
COMPLETE SPECIFICATION..
Improvements in Apparatus for Use in the Manufacture of Coal Gas.
I HENRY JEREMIAH ROBUS, of Mansion House Chambers, Bucklersbury,
London; E.C., Civil 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:-
My invention relates to hydraulic mains, foul gas mains, and other pipes and
vessels situated above retort settings in gas works and has for its object to cool
and regulate the temperature of these pipes and vessels.
My invention consists in water-jacketing the hydraulic main, foul gas main
and tar. and liquor main, and in automatically actuating and in controlling the
flow of jacket water so as to regulate the temperature of contents of the mains.
My invention further consists in supplying a water jacket for cooling purposes
to the bottom and if desired, to the sides of the coal bunkers which may then
be placed directly above the retort setting, and also in automatically actuating
and in controlling the flow of this jacket water.
The hydraulic main is usually placed above the retort setting and is screened
from the intense heat of the furnaces by several layers of brick-work. This
involves placing the main at a considerable height above the retorts and even
then the heat is objectionable as it bakes the tar in the hydraulic main and
causes the tar to clog both there and in the tar and liquor main. By means of
my invention the hydraulic main can be placed closer to the furnaces and the
ascension pipes reduced in length. This shortens the path of the gas from the
retorts to the hydraulic main and thereby lessens the amount of tarry deposit
in the ascension, arch, and dip pipes, and hydraulic and other mains and tends
to prevent the clogging or choking of these pipes. By controlling the flow of
water through the jacket of the hydraulic main I can regulate the temperature
of the main so as to ensure the best temperature being maintained. Further,
the lowering of the hydraulic main, by reducing the lengths of the ascension pipes
and the necessary height of the retort house, allows a considerable saving in
first cost of the installation.
Referring now to the acompanying drawings which illustrate my invention.
Figure 1 is a sectional elevation of a horizontal retort setting with hydraulic
main and foul gas main fitted in accordance with my invention.
Figure 2 is a sectional elevation of an inclined retort setting with hydraulic
main, foul gas main, tar and liquor main and coal bunker fitted in accordance
with my invention.
In both figures a is a retort and b, c and d its ascension, arch and dip pipes,
respectively. The hydraulic main e is enclosed in a jacket f, and supported at
intervals inside the jacket by the props g. The dip pipe & passes in the usual
manner through the cover of the hydraulic main and dips beneath the surface
of the tar and ammoniacal liquor h. Water is supplied to the water jacket f
through the pipe k from a supply tank 1. The water level in this supply tank is
controlled by means of a floating ball valve n or by any other suitable means.
A pipe m takes away the water from the jacket. This pipe may join the jacket

page_text: near the bottom as shown in Figure 2 or it may draw off the water from near
the top of the jacket at the side remote from the feed pipe k or from any other
suitable place. The hydraulic main with its jacket may rest either on the brick-
work of the setting as shown in Figure 1, or on beams as shown in Figure 2.
The foul gas main leading from the hydraulic main may also be jacketed as
far as necessary, and likewise the tar and liquor main if such a main is used.
The foul gas main P with its jacket r is shown in both figures and a tar and
liquor main q with a jacket s is shown in Figure 2 only. These jackets may be
connected to the jacket of the hydraulic main as shown in Figure 2 or they
may be separate and have their own inlet and outlet pipes similar to those of
the hydraulic main.
The coal bunker t also may be jacketed at the bottom u as shown in Figure 2
and at the sides likewise if desired.
A cock (Figure 1) may be attached to the outlet pipe m of the water jacket
so that, by regulating the outflow of the water, the hydraulic and other water-
jacketed mains may be maintained at any suitable temperature. I consider it
important that means should be provided for regulating the temperature of the
hydraulic main as it is as hurtful to have too low as too high a temperature.
By this device any desired temperature may be maintained in the mains.
The water from the jackets may be used to slake the coke and therefore need
not be wasted.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed, I declare that what
I claim is: —
1. In the manufacture of coal gas, water-jacketing and regulating the tempera-
ture in the hydraulic and other mains substantially as and for the purposes
described.
2. In the manufacture of coal gas, keeping cool the hydraulic mains, foul gas
mains, tar and liquor mains and coal bunkers, substantially as described with
reference to the accompanying drawings.
3. In the manufacture of coal gas, the combination of an hydraulic main such
as e and a foul gas main such as p with jackets such as f and r, an inlet pipe
such as and an escape pipe such as m provided with a regulating cock, sub-
stantially as described with reference to the accompanying drawings.
Dated this 21st day of December 1999.
Datu CHID 2470
MARKS & CLERK,
18, Southampton Buildings, London, W.C.,
13, Temple Street, Birmingham, and
25, Cross Street, Manchester, Agents.