Year: 1897

page_text: I, ROBERT DIXON, of South View, Crook, in the County of Durham, Colliery Agent,
do hereby declare the nature of this invention to be as follows:--
My invention relates to the manufacture of coke the result being to effect economy
in the means employed for this purpose.
The object of my invention is to dispense with the very expensive recuperator
apparatus used in retort ovens such as Simon Carvé or the Semet-Solvay ovens or
any other class of retort ovens that may be used for taking the bye products out of
the coal and in its place to use the superfluous or waste heat from ordinary coke ovens
or even from blast or other furnaces when available and so obtain the same result for
a much smaller outlay.
What is known as the beehive oven is a wasteful apparatus to use for the
manufacture of coke, in as much as that the gases are discharged to waste at a high
temperature and in a condition in which the elements of combustion have not been
exhausted. To remedy this retort ovens have been designed in conjunction with
which a recuperator apparatus is employed to recover and revivify the gases
previously wasted by the beehive oven. But such recuperator apparatus is very costly
in construction and repairs.
By means of this invention the beebive oven and the retort oven are employed in
aid of each other, by which the waste gases from the beehive oven are utilized in
heating the retort oven, thus avoiding the waste of the former and dispensing with
the hitherto expensive and recuperating apparatus of the latter.
For the purposes of my invention the beehive oven is to be taken as the
representative generally of coke ovens in the use of which the gases are similarly
given off to waste such as under flued ovens.
In carrying out this invention the otherwise waste gases from the beehive ovens
are taken along a main flue to the retort ovens, which main flue is controlled by
dampers so that each retort oven receives its supply of gas. The admission of air is
provided for if necessary to revivify the waste gases and to set up and sustain the
requisite combustion. Should there still be a surplusage of heat this can of course
be drawn off and otherwise utilized as for generating steam before escaping into the
chimney or uptake.
My invention is used to great advantage when the beehive or ordinary coke ovens
are used in conjunction with the retort ovens, but I avail myself of other suitable
sources of supply in some cases such as the waste gases of a blast furnace so
long as the available supply enables the retort oven to be used without the
recuperator.

page_text: I, ROBERT DIXON, of South View, Crook, in the County of Durham, Colliery 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:
My invention relates to the manufacture of coke the result being to effect
economy in the means employed for this purpose.
The object of my invention is to dispense with the very expensive recuperator
apparatus used in retort ovens such as Simon Carvé or the Semet-Solvay ovens or
any other class of retort ovens that may be used for taking the bye products out of
the coal and in its place to use the superfluous or waste heat from ordinary coke
ovens or even from blast or other furnaces when available and so obtain the same
result for a much smaller outlay. What is known as the bee-hive oven is a wasteful
apparatus to use for the manufacture of coke, inasmuch as that the gases are
discharged to waste at a high temperature and in a condition in which the elements
of combustion have not been exhausted. To remedy this retort ovens have been
designed in conjunction with which a recuperator apparatus is employed to recover
and revivify the gases previously wasted by the bee-hive oven. But such recuperator
apparatus is very costly in construction and repairs.
By means of this invention the bee-hive oven and the retort oven are employed in
aid of each other, by which the waste gases from the bee-hive oven are utilized in
heating the retort oven, thus avoiding the waste of the former and dispensing with
the hitherto expensive recuperating apparatus of the latter.
Having thus described the nature of my invention and its utility I will now proceed
to further explain the same by reference to the drawing hereto annexed and the
manner in which the improvements constituting my invention are to be carried out
in practice.
Referring to the drawing a a are bee-hive ovens illustrated in sectional view and
which are to be taken as the representatives generally of coke ovens in the use of
which the gases are similarly given off to waste which is the case whether the ovens
are underflued ovens as shown or are ordinary ovens without flues. b is a retort
oven shown in sectional view with the usual connections, mountings and appliances
for charging and working the same. c is a main flue leading from the bee-hive
ovens a a into the retort oven b. For simplicity of description I will assume that
the drawing illustrates a plant adapted for the manufacture of coke in which the waste
heat from two bee-hive ovens a a is conveyed through the main flue c into a single
retort oven b, the two classes of oven being separated by a space for the reception of
the coke discharged therefrom, through which space a gulley is conveniently carried
for the accommodation of trucks to be used for the removal of the coke. The main
flue c communicates by separate passages d d with each bee-hive oven
a the
passages d d being suitably controlled each by its own damper. The main flue is
carried across from its connection with the smaller flues 1 d to an aperture e
communicating with a chamber f and flues f leading therefrom beneath the floor of
the retort furnace b. By this means the otherwise waste gases from the bee-hive
ovens a a are taken along the main flue c to the retort oven b, which main flue c is
controlled by dampers to shut off or regulate the supply of gas. The admission of
air is provided for if necessary to revivify the waste gases and to set up and sustain
the requisite combustion. g is a tuyere provided for this purpose, to deliver a jet of
air directly into the hot gases as they enter the chamber f. Should there still be a
surplusage of heat in the gases when they leave the underflues of the retort oven b

page_text: this can of course be drawn off and otherwise utilized as for generating steam before
escaping into the chimney or uptake.
Having described my invention as applied to plant of the simplest description it
will be readily understood how it can be applied to plant consisting of several bee-hive
ovens and a corresponding number of retort ovens it being only necessary to provide
one or more mainflues and their connections for the transmission of the waste gases
from the bee-hives to the underflues of the retort ovens with suitable provision for
shutting off any particular oven and for regulating the supply of waste gas and air
to revivify the said waste gases in a manner well known and needing no description.
My invention is used to great advantage when the bee-hive or ordinary coke ovens
are used in conjunction with retort ovens because the otherwise waste gases of the
bee-hive ovens are used to heat the retort ovens in the place of the recuperators
hitherto used but I do not restrict my invention to this arrangement but avail myself
of other suitable sources of supply in some cases such as the waste gases of a blast
furnace so long as the available supply enables the retort oven to be used without a
recuperator.
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 :-
In the manufacture of coke the arrangement of plant substantially as described by
means of which the retort ovens are heated by the waste gases discharged from the
bee-hive ovens or derived from other similar sources as and for the purpose set
forth.
Dated this 24th day of December 1897.
G. J. CLARKSON,
Chartered Patent Agent, Stockton-on-Tees and Hull,
Agent for the Applicant.