IMPROVEMENTS IN THE METHOD OF AND APPARATUS FOR GENERATING STEAM IN BOILERS
Year: 1884

page_text: PROVISIONAL SPECIFICATION.
We, ALFRED JOHNSON, of 19 Lower Rushton Road, Bradford, Engineer, and
GEORGE GRAY RHODES of Norristhorpe, Liversedge, Engineer, both in the County
of York, do hereby declare the nature of our Invention for IMPROVEMENTS
IN THE METHOD OF AND APPARATUS FOR GENERATING STEAM IN BOILERS, to .be
as follows:-
The object of our invention is to combine the furnace and flues of gas making
retorts with the flues of steam boilers in such a manner that the residual heat from
the coke fires for heating the retorts, is utilised for heating the boiler in conjunction
with the ignited gas produced by the retorts.
We accomplish our object by mounting the boiler to be heated, above the gas
making apparatus and use one or more ordinary retorts, the number varying
according to the dimensions of the boiler. We set each retort under a separate
reverberatory arch one being directly over the coke furnace, and the heated current
from the said furnace is split at the back end of the same, the heated gases passing
along connecting flues into the other retort ovens to the front end of the same up
into the main flue of the boiler.
The retorts are fitted with ordinary mouth pieces, rising, and hydraulic mains,
and connected with the scrubbers for purification and collecting the tar and sulphate
of ammonia.
From the scrubbers we extract the gas by means of pumps and press it into
receivers from which the gas is conveyed through suitable pipes and valves into
one of the flues, and combined with the necessary amount of oxygen where it is
ignited and assists the residual heat from the coke furnace to generate steam in the
boiler.
By this combination we extract the tar and ammonia and obtain a complete
combustion of the gases producing a great amount of heat without smoke and sooty
deposit on the boiler plates by which the conductive tendency of the plates is
unimpared.
"
1001

page_text: WO, ALFRED JOHNSON, of. 19, Lower Rushton Road, Bradford, Engineer, and
GEORGE GRAY RHODES of Norristhorp, Liversedge, Engineer, both in the County
of York, do hereby declare the nature of our invention for IMPROVEMENTS IN
THE METHOD OF AND APPARATUS FOR GENERATING STEAM IN BOILERS, and in
what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement :-
The object of our invention is to combine the furnace and flues of gas making
retorts with the flues of steam boilers in such a manner, that the residual heat from
the coke fires for heating the retorts, is utilised for heating the boilers in conjunction
with the ignited Gas produced by the retorts, which we accomplish, by mounting
the boiler above the gas making apparatus consisting of one or more retorts, with
each stack of retorts set under a separate reverberating arch. The heated gases
from the coke furnace, pass through openings into the retort flues around the
retorts, then into the main flue under the boiler, where gas and the necessary
amount of oxygen are injected and ignited, thereby assisting the residual heat
from the coke furnace to generate steam in the boiler.
The retorts are fitted with ordinary mouthpieces, rising, and hydraulic mains,
and connected with scrubbers for the purification and collecting of the tar and
ammonia.
By our arrangement and combination, the tar and ammonia are extracted from
the gas, and a complete combustion of the gases obtained, producing a great amount
of heat without smoke and sooty deposit on the boiler plates, by which the
conductive tendency of the plates is unimpared.
In order that our invention may be better understood, we have appended one
sheet of drawings illustrative thereof, in which Fig 1. represents a cross section
through coke furnace, boiler, scating and retorts. Fig. 2 is a front elevation,
Fig. 3 a longitudinal section and Figs. 4 and 5 details of the apparatus we use for
injecting and mixing the gas and air previous to combustion.
The boiler A is shewn in connection with six retorts B, three of which are on
each side of the coke furnace C, but there may be more or less retorts according to
the size of boiler to be heated. The heat from the coke furnace C, passes through
a number of openings D, into the flues of centre retorts at each side of the furnace;
then passing along the said flues towards the back ends of retorts, the heat drops
through openings into the bottom retort flues E, travelling towards the front and
through an opening under each retort made in the midfeathers to the flues Et on
the opposite side of the retorts; then travelling to the back, ascends through
openings into flues E, then travelling towards the front again ascends into flues E³,
finally passing from these flues into main flue F under boiler, and through the side
Blues and circular flues F to the chimney.
Each retort is fitted with an ordinary mouthpiece, and rising, and hydraulic
mains G and H, the latter of which is connected with scrubbers of the ordinary
construction for the purification and collecting of the tar and ammonia.
The gas from the scrubbers is extracted by pumps, and pressed into holders from
which it is conveyed by pipes to the regulating valve J, passing through the reduced
end of pipe K. into the funnel ended pipe L. In order to obtain a sufficient
quantity of air to flow through the said pipe for the combustion of the gas, we
apply a steam jet at each side of the coke furnace under the gas pipe K, which
terminates with an elbow or bend pipe pointing upwards in the interior of each
pipe M, the latter being connected with the flues, causes a quantity of the heated

page_text: gases to rush up the said pipes into the box W, and a quantity of the external
atmospheric air to enter through the funnel ended pipe L into the box W, where
they are combined and pass through narrow opening in plate N¹ into the main
flue F under the boiler, where the gas is ignited and assists to generate steam in
the boiler A.
On the withdrawal of the coke or carbonized coal from the retorts, it is utilised
by opening the door P and depositing the same in the main flue F, which is
consumed in conjunction with the gas passing through the perforated plate N'.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is:
The heating of steam boilers by the residual heat from the gas making retorts in
conjunction with ignited gas and coke applied and arranged substantially in the
manner described and as illustrated by the accompanying drawings.
WAUGH & CHAPMAN,
Agents for the Applicants.