Pro Coke-
Year: 1897

page_text: Date of Application, 16th Jan, 1897
Complete Specification Left, 16th Oct., 1897-Accepted, 15th Jan., 1888:
I, HENRY SIMON, of 20, Mount Street, Manchester, in the County of Lancaster,
Engineer, do hereby declare the nature of this invention to be as follows:-
This Invention relates to Apparatus and Appliances used in connection with that
type of Bye-Product Coke-Ovens described in the Specification of Letters
Patent No. 554 dated the 1st February A.D. 1883 for an Invention communicated to
me from abroad by Francois Carves.
In Coke-Ovens of this type, the air required for the combustion of the gases, and
supplied to the flues of the ovens, is heated by being caused to pass in contact with
brickwork passages through which the hot gaseous products of combustion are
conducted from the said flues of the ovens. It is found in practice that this method,
whilst giving very good results, possesses the disadvantages that a large amount of
brickwork is required and that the air is caused to travel round sharp corners and in
contrary directions. Moreover, the walls which separate the hot gas passages, being
constructed of materials having a low conductivity for heat, the system is less
effective than it might be with regard to the maximum utilisation of the waste
heat.
My present Invention is designed for the purpose of avoiding these objections and
consists in so reconstructing and re-arranging the passages as to cause the hot waste
gases to travel, on their way to the chimney, through or around a metallic tube or
metallic tubes, which tube or tubes is or are contained within a conduit or channel
or a plurality of conduits or channels which serve as air passages in substitution for
the air heating passages now in use. The tubes and the conduits or channels.
respectively are best arranged so that the flow of the hot gases and of the air
respectively are in contrary directions. In many cases, the waste gases after passing
from the coke-oven are still of such a high temperature that metal tubes would be
burnt thereby. In such cases, the metal tubes can either be lined with fire-brickwork
or the waste gases may be allowed to proceed in the way indicated in the Specification
of Letters Patent No. 554 dated the 1st February, A.D. 1883 herein before referred
to, for a greater or smaller distance according to the higher or lower temperature at
which the waste gases first leave the coke-ovens and the metal tubes above referred
to be introduced only towards the end before the waste gases finally join the chimney,
so during that part of their course, an increased quantity of heat may be extracted
from them. The hot air passages may or may not be strictly tubular and I may
otherwise modify the construction but so always that I employ a good heat conductor
for the partition between the gas and the air passages.
The flues or passages being shortened by these Improvement there is less friction
and consequently a less draught is required.
:

page_text: Improvements in Bye-product Coke-ovens.
I, HENRY SIMON, of 20, Mount Street, Manchester, in the County of Lancaster,
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 :-
°
This invention relates. to apparatus and appliances used in connection with that
type of Bye-Product Coke Ovens described in the specification of Letters Patent
No. 554 dated the first day of February A.D. 1883 granted to me for an invention
communicated to me from abroad by Francois Carves.
In coke ovens of this type, the air required for the combustion of the gases and
supplied to the flues of the ovens, is heated by being caused to pass in contact with "
brick-work passages through which the hot gaseous produces of combustion are
conducted from the oven flues. It is found in practice that this method, whilst
giving very good results, possesses the disadvantages that a large amount of brick-
work is required and that the current of air has to travel in contrary directions and
to pass round sharp corners. Moreover, the walls which separate the gas passages
from the air passages being constructed of materials having a low heat conductivity,
the system is less effective than it might be with regard to the maximum utilisation
of the waste heat.
My present invention is designed for the purpose of avoiding the objections above
set forth and consist in so re-constructing and re-arranging the passages as to cause
the hot waste gases to travel, on their way to the chimney, through or along the
outside of a metallic tube or metallic tubes which tube or tubes is or are contained.
within a conduit or channel or a plurality of conduits or channels along which the
air or the hot waste gas as the case may be is caused to travel, preferably in a
contrary direction, in contact with the tube or tubes. Assuming that the hot gas
travels through the tube or tubes and that the air travels. through the conduit or
conduits, the air becomes heated by convection through the tubes and by radiation
from their highly heated walls. The same result obviously occurs if the gas travels
along the conduit or conduits and the air through the tube or tubes.
In many cases the waste gases, immediately after leaving the coke oven, retain so
high a temperature that the metal tubes nearer to the ovens or through or over which
these highly heated gases pass may be burnt or rapidly deteriorated. In such
instances those metal tubes or parts of them may be protectively lined if the gases
pass through them, or coated if they pass along the conduits outside the tubes, either
with firebrick-work, gannister, magnesia bricks or other suitable substance known
and employed for similar purposes. Or, in the neighbourhood of the ovens where
the waste gases are hottest, the construction and arrangement described in the
specification to Letters Patent No. 554 of A.D. 1883, herein before referred to, may
be adopted or retained for a greater or less distance according to the local temperature,
and the metal tubes with their conduits will then be introduced between this old
construction and arrangement and the chimney. In this way the residual heat left
in the gases after passing through the shortened old arrangement can be more readily
absorbed and utilised in the incoming air coming into contact with the walls of the
tubes, which in this case need not always be protectively coated or lined.
Instead of the metallic tube or tubes as herein before described I may employ.
equivalent passages, always provided that the walls, partitions or divisions between
the space through which the gases travel, and that through which the air travels
consist of a good heat conductor as hereinbefore set forth.
The accompanying drawings, shew, in plan, convenient methods for carrying out
my present improvements.. In each of the Figures A indicates the site of a battery

page_text: of coke chambers from which the hot gases escape by passages B to the flue C
leading to the chimney D. Air enters at E, is heated by contact with the flues or
their equivalent, and finally passes into the coke chambers by the passages or
conduits F.
As shewn by Figure 1, the hot gases enter the brick-work flue C which may be
constructed parallel with the battery of coke chambers at the end of which it returns
to the chimney. Along the centre of this returned flue there may be arranged the
air admission pipe G, from which branches HH, lead to the coke chambers.
As represented by Figure 2, the hot gases enter the brick-work flue C which may
be constructed parallel with the battery of coke chambers. At the end of the flue a
closed connection is made with the pipes C, which receive the flue gases and convey
them to the chimney. The incoming air enters at E into the brick-work flue G
parallel with C and returned at the end around C so as to come between it and the
the coke: chamber site.. From this flue the heated air is admitted to the coke
chambers by the branch passages F.
It will be understood that the represented arrangements may, as herein before
described, be modified in various ways and that the requisite number of air admission
and gas exit passages to and from the coke chambers will be provided instead of the
limited number shewn on the drawings for the sake of clearness.
Owing to the more complete and rapid absorption by the air of the waste heat from
the gases by these improvements, the total length of the flues conduits or passages
may be greatly shortened so that either no reversals or fewer reversals in the direction
of their travel are needed. There being thus less friction, a less draught will be
required.
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:-
The improved method of heating the air supply in Simon-Carves Coke Ovens and
other coke ovens of a similar type, substantially as and by the means hereinbefore
described.