Improvements in Coke Ovens.
Year: 1889

page_text: Date of Application, 18th Dec., 1889
Complete Specification Left, 11th Sept., 1890-Accepted, 18th Oct., 1890
I'ROVISIONAL SPECIFICATION.
Improvements in Coke Ovens.
Communicated from LOUIS SEMET, of 19, Rue du Prince Albert, Brussels,
Belgium, Manufacturer.
I, WILLIAM LLOYD WISE, of No. 46 Lincoln's Inn Fields, in the County of
London, Consulting Engineer and Patent Agent, do hereby declare the nature of
this invention to be as follows:-
In the Specification of Letters Patent granted to Messrs. Semet & Solvay dated
17th November 1880 No. 4733 there are described arrangements of coke ovens
having thin walls, requiring a very regular heating. The heating depends directly
on the distribution and combustion of combustible gas generated during the coking
operation.
As the gas has a regular average composition, it is necessary, and it is sufficient in
order to obtain a regular heating, that the combustible gas should be distributed
strictly in equal quantity to each oven.
In order to effect a regular or constant distribution of the gas through a rather
large number of distinct orifices, considerable difficulties have to be overcome in
practice. For instance, it is almost impossible to effect the equal distribution
referred to by means of regulating cocks.
Now in order to effect this object there is employed according to this invention,
apparatus the operation of which is based upon a well-known principle in physics
according to which the quantities of one and the same gas, flowing through an
orifice, are regulated solely by the diameter of the orifice and by the difference in the
pressures existing before and behind it.
i
In the present case, it would suffice to ensure, by the adoption of suitable
dimensions a constant pressure in the pipe used for the distribution of the gas, so
that such pipe should form a reservoir and to provide orifices of equal area to
distribute to each oven. To this end each pipe employed for supplying the gas to an
oven, is provided with a perforated diaphragm calibrated exactly so that the cross
sectional area of the passage for gas is such as to pass the necessary volume at the
average pressure available, the orifices of the several diaphragms are all equal. In
order to obtain a regular volume of discharge, it is further necessary to ensure a
constant pressure.
For this purpose there is applied to the main conduit a pressure regulator that
will permit of the pressure in the distributor reservoir or reservoirs being varied
according to requirement and will maintain this pressure constant after the pressure
has once been fixed. Any known or suitable form of pressure regulator may be
used.
By this invention the division of a gaseous current into a great number of equal
portions (for instance 25 portions) can be successfully effected. The same arrange-
ment is applicable to the equal distribution of air.
Dated this 18th day of December 1889.
W. LLOYD WISE,
Per F. J. Brougham.

page_text: COMPLETE SPECIFICATION.
Improvements in Coke Ovens.
Communicated from LOUIS SEMET, of 19, Rue du Prince Albert, Brussels,
Belgium, Manufacturer.
I, WILLIAM LLOYD WISE, of No. 46 Lincoln's Inn Fields, in the County of
London, Consulting Engineer and 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 :--
In the Specification of Letters Patent granted to Messrs. Semet & Solvay
dated 17th November 1880 No. 4733 there are described arrangements of coke ovens
having thin walls, requiring a very regular heating. The heating depends directly
on the distribution and combustion of combustible gas generated during the coking
operation.
As the gas has a regular average composition, it is necessary, and it is sufficient in
order to obtain a regular heating, that the combustible gas should be distributed
strictly in equal quantity to each oven.
In order to effect a regular or constant distribution of the gas through a rather
large number of distinct.orifices, considerable difficulties have to be overcome in
practice. For instance, it is almost impossible to effect the equal distribution
referred to by means of regulating cocks.
Now in order to effect this object there is employed, according to this invention,
apparatus the operation of which is based upon a well known principle in physics
according to which the quantity of gas flowing through an orifice in a given time is
regulated solely by the diameter of the orifice and by the difference between the
pressures existing at the two sides of the orifice.
In the present case, it would suffice to ensure by the adoption of suitable
dimensions a constant pressure in the pipe used for the distribution of the gas, so
that such pipe should form a reservoir, and to provide orifices of equal area to
distribute the gas to each oven. To this end each pipe employed for supplying
the gas to an oven is provided with a perforated diaphragm calibrated exactly, so
that the cross sectional area of the passage for gas is such as to pass the necessary
volume at the average pressure available; the orifices of the several diaphragms are
all equal.
In order to obtain a regular volume of discharge it is further necessary to ensure
a constant pressure.
For this purpose there is applied to the main conduit, a pressure regulator that
will permit of the pressure in the distributor reservoir or reservoirs being
varied according to requirement, and will maintain this pressure constant after the
pressure has once been fixed. Any known or suitable form of pressure regulator
may be used.
By this invention the division of a gaseous current into a great number of equal
portions (for instance 25 portions) can be successfully effected. The same arrange-
ment is applicable to the equal distribution of air.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
--
The combination with a set of coke ovens, for the purpose of effecting the
division of a current of gas or air, of the reservoir for distributing gas or air, the
diaphragms formed with equal orifices, and the pressure governor or regulator.
Dated this 11th day of September 1890.
-W. LLOYD WISE.