Improvements in Coke Ovens.
Year: 1888

page_text: Date of Application, 10th Oct., 1888
Complete Specification Left, 10th July, 1889-Accepted, 10th Aug.. 1889
PROVISIONAL SPECIFICATION.
[Communicated from abroad by Dr. THEODOR VON BAUER, of Munich, Bavaria, in the
Empire of Germany, Civil Engineer.]
Improvements in Coke Ovens.
I, HENRY HARINGTON LEIGH, Fel. Inst. P.A., Assoc. M. Inst. C.E., practising
as Phillips & Leigh, of No. 22, Southampton Buildings, Chancery Lane, in the
County of Middlesex, Engineer and Patent Agent, do hereby declaro the nature of
this invention to be as follows :-
This invention relates to improvements in Coke-ovens, more especially to those
known as circular ovens and constructed according to the invention described in the
Specification of Letters Patent No. 6342 of 1887.
The object of the present invention is to provide for the voluminous discharge of
hydro-carbon vapours from rich coals during the process of coking, in the direction
of preventing the said discharge keeping out the air-supplies from the mixing
chambers and damaging the internal flue structure of the oven, which keeping out
has a tendency to establish itself when the oven is being worked without the use of
the apparatus for the abstraction of the bye-products.
In carrying the invention into effect, I form openings through the side walls of the
either into the combustion-chambers, or into the outer air, which holes are, or
may be, stopped again, after the bye-product apparatus is in operation.
oven,
I also provide for the more perfect admixture of the hydrocarbon vapours and the
combustion-air in the gas-and-air mixing chambers by sub-dividing the vacant space
by baffles, or varying the direction of the respective vapour- and air-ways, so that the
intermixture of the said vapour and air may be thoroughly effected before the two
reach the flue under the oven-sole.
I also modify the vertical-and-circular air. flues around the main vertical exhaust so
as to improve the draught down the same by providing any suitable means by which
the heated air-currents in the said flues may be compelled to descend, in spite of
their lightness.
1000
Dated this 10th day of October 1888.
HENRY H. LEIGH..
COMPLETE SPECIFICATION..
Improvements in Coke Ovens..
t
I, HENRY HARINGTON LEIGH, Fel. Inst. P.A., Assoc. Mem. Inst. C.E., practising
as Phillips & Leigh, of No. 22, Southampton Buildings, Chancery Lane, W.C., in
the County of Middlesex, Engineer & Patent Agent, 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 :-
This invention relates to improvements in coke ovens, more especially to those
known as circular ovens and constructed according to the invention described in the
Specification of Letters Patent, No. 6342 of 1887; but it is also applicable to a.
previous type of oven described in the specification of Letters Patent,. No. 11040 of
1884; and a reference to the said specifications will materially assist the reader in
understanding what is the exact scope of the present invention.
The object of the present. invention is to provide for the voluminous discharge of
hydro carbon vapours from rich coals during the process of coking, in the direction
of preventing the said discharge keeping out the air-supplies from the mixing
chambers, and damaging the internal flue-structure of the oven, which keeping out
has a tendency to establish itself when the oven is being worked without the use of
the apparatus for the abstraction of the bye-products.

page_text: In carrying the invention into effect, I form openings through the side walls of the
oven either into the combustion chambers, or into the outer air, which holes are, or
may be, stopped again after the bye-product apparatus is in operation.
I also provide for the more perfect intermixture of the hydrocarbon vapours and the
combustion-air in the gas-and-air mixing chambers by subdividing the vacant space by
baffles, or by varying the direction of the respective vapour-and-air ways, so that the
intermixture of the said vapour and air may be thoroughly effected before the two
reach the flue under the oven-sole.
I also modify the vertical-and-circular air flues around the main vertical exhaust,
so as to improve the draught down the same by providing any suitable means by
which the heated air-currents in the said flues may be compelled to descend in spite of
their lightness.
In order that this invention, and the means by which it is to be carried into
practical effect, may be thoroughly understood, I will now describe it in detail, as it
has been communicated to me, referring in so doing to the accompanying drawings
which are to be taken as part of this specification and read therewith.
Figures 1 and 2, 3 and 4, 5 and 6, 7 and 8, 9 and 1 are, respectively, sectional
elevations, and composite plans taken on the respective levels indicated on the
elevations.
Referring to Figs. 1 and 2, the oven therein illustrated is circular in plan having a
similar flue-arrangement to that illustrated in Specification No. 110408, but in com-
bination therewith, an apparatus by which the bye-products can be either extracted
or not.
A, A are the retorts. The full products of distillation are led away to the scrubbers
through the pipes B, or only a portion, as may be desired.
C represents the pipe-connection from the scrubbers adapted to reconvey the
hydrocarbon gases into the lower combustion chambers D.
The gases from the retorts can also pass into the said combustion chambers through
openings d, d in the retort walls. E, E, are flues from the combustion chambers D to
underneath and behind the retort floors and backs, through which flues the burning
gases flow upwards into the top combustion chambers F. The products of combustion
escape from the last mentioned chambers through suitably arranged radial flues into
a large circular flue G from which they flow along the four flues H into the
chimney I.
Referring to Figs. 3 and 4, according to the combination herein illustrated and
which is very similar to that described with reference to Figs. 1 and 2 the external
main collecting flue J of the last mentioned figures is omitted. The chimney I is of a
downward construction, in order that the gases passing through it may be employed
for heating boilers. K is the main air supply, so arranged in respect of its position
with reference to the chimney I that it may be thoroughly warmed on its way to the
upper combustion chambers F. The return gases enter at k.
Referring to Figs. 5 and 6, the novel feature of the flue construction therein illus-
trated is the delivery of the return gases from the scrubbers downwards through the
top of the oven at 6, and the flow of the burning gases downwards behind the retort-
back instead of up.
Referring to Figs. 7 and 8, there is here illustrated the improvement on the circular
coke ovens described in the Patent first above mentioned, by which I moderate the
intense heat so easily produced and maintained in the circular ovens described therein.
In carrying this part of my invention into effect, the return gases from the scrubber
are delivered into the oven top at L, and are sucked downwards into the baffle-supplied
mixing chamber M where they meet with the air currents flowing in through the
radial flues N. The gasos then pass downwards behind and beneath the retort-back
and sole and into the combustion chambers, upper and lower, F, D, from whence the
products of combustion flow through annular flues 0 and 0¹ into the chimney. It
will be noticed as distinctive of the particular construction of oven
description, that the air-supplies are considerably simplified, and that partition walls
have been introduced into the combustion chambers, adapted to prevent tongues
now under

page_text: of flame from being driven by irregularities in the air-supply against particular
points.
Referring to Figs. 9 and 10, the chimney I is continued below as well as carried
above the oven so that the waste gases may be carried in either direction.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is:-
1. The combination of the oven-structures illustrated in the two previous Patents
respectively, as the same combination is hereinbefore described with reference to
Figs. 1 and 2.
2. The combination of the oven-structures illustrated in the two previous Patents
as respectively, the same combination is herein before described with reference to
Figs. 3 and 4.
3. The combination of the oven-structures illustrated in the two previous Patents
respectively, as the same combination is hereinbefore described with reference to
Figs. 5 and 6.
4. The combination of the oven-structures illustrated in the two previous Patents
respectively, as the same combination is herein before described with reference to
Figs. 7 and 8.
5. The combination of the oven-structures illustrated in the two previous Patents
respectively, as the same combination is herein before described with reference the
Figs. 9 and 10.
Dated this 10th day of July 1000
HENRY HARINGTON LEIGH.