Chicago eagle. [volume] (Chicago, Ill.) 1889-19??, 1894-07-07

the small percentage lost by radia.
ton, except as 1t is lost in the super
heating Of steam, the vaporizihg Of
oil. and the fixing Of gas.
All the heat so stored In the super.
heaters is stored in condensers or
water.heaters. The water So heated
is sent to the boilers for conversion
into steam. by this means less fuel
is required under the boilers. The
superheaters are constructed and
operated on the plan so successfully
used ia the "Siemens. Martin" open.
hearth and crucible.steel furnaces.
They are heated from their tops
downward, the primary products of
combustion, while admitting air and
heating up, being completely burned
by the admission of secondary air
blasts. the anal burned products pass.
ing downwardly and out at their
bases, being exhausted by mechani.
cal exhauster. The gas generated
while admitting steam and making
gas also passes alternately through
the same exhauster.
5. 1t provides the best method Of
handling gases.
Numerous experiments made by
this company have demonstrated the
correctness Of the principle that
gases that are made must be drawn
away from the region where chemical
changes are taking place." In order
TO secure economical results. Conse.
quently, all the products and gases
generated are passed alternately
through tile cxhauster. A pressure
Of air and steam IL alternately up.
piled at one end Of the apparatus and
a continuous exhaust at the other, 90
that the gauges stand practically at
zero, both when heating up and
when making gas. The products
and gas pass alternately through tar
extractors located betwe en- the super.
heaters and exhauster, and the tar
flows into a settling tank.
9. 1t provides the best method Of
superheating and decom posing steam
without putting out the fires ut the
base.
Afer heating up the apparatus, the
steam Is passed into the base Of one
superhcater and upward through the
highly heated brickwork, thereby
raising its temperature, say, to 1900
degrees. 1t then passes downwardly
through one coking. chamber and
then down through the first genera
tor, thereby partially decomposing 1t.
The resulting water gas, and that
portion Of the steam not decomposed,
then pass through the Waived aue
connecting the generators ut the
base, and upward through the other
body Of incandescent coke In the
other generator, thereby completely
accompanying the steam. The water
gas thus generated then passes up.
wardly through the second coklng.
chamber into the top OF the said
superheater, wherein 1t Is mingled
with the vapors Of oil injected into
the top Of said superheateE The
mingled water gas, coal gas, and oil
vapors are then combined into fixed
Illuminating gas OF high.candle power,
by passing them downwardly through
the highly heated brickwOrk In the
superheater. This absorbs the heat
previously stored In the superheater,
the heat so disappearing becoming
latent In the gas, and reappearing
when the gas Is burned.
Gas can be made In one.half Of the
apparatus, when 1t IL necessary to re.
pair either side Of the generators, by
closing the valves In the connecting
fues, and passing the steam into the
base OF the generators while making
gas. This Is not SO economical a
process, as 1t puts out the fire at the
base. and the steam Is not so thor
oughly decomposed, but 1t can be
readily operated to keep up the sup
ply Of gas until the whole apparatus
Is again ready for service.
:. 1t provides q process and appara.
tus whereby the fires may be cleaned
Of ash and cinders and fresh fuel
added while heating up the appara.
tus, aud without loss OF time, gas or
heat.
| When the fires are cleaned and
fresh fuel is added, the air blasts are
shut of and the ash outlets and fuel
inlets are opened.
The action Of the exhauster draws the
air necessary for heating up into the
openings, thus drawing the gas and
heat away from the stokers and heat
ing up the generators, coking-cham.
bers and superheaters, so that when
the operations of cleaning the fires
and adding fresh fuel are finished,